question_answer 1) L, C and R represent physical quantities inductance, capacitance and resistance respectively. The combination representing dimension of frequency is
A)
LC
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B)
\[{{(LC)}^{-1/2}}\]
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C)
\[{{(L/C)}^{-1/2}}\]
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D)
\[\text{C/L}\]
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question_answer 2) Energy of a photon is given by \[\text{E=hv}\] where v is the number of vibrations per second and h is Planck's constant. Dimensions of Planck's constant are
A)
\[\text{ }\!\![\!\!\text{ }{{\text{M}}^{\text{0}}}{{\text{L}}^{\text{0}}}{{\text{T}}^{\text{0}}}\text{ }\!\!]\!\!\text{ }\]
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B)
\[\text{ }\!\![\!\!\text{ M}{{\text{L}}^{2}}{{\text{T}}^{\text{-1}}}\text{ }\!\!]\!\!\text{ }\]
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C)
\[\text{ }\!\![\!\!\text{ M}{{\text{L}}^{2}}{{\text{T}}^{\text{-2}}}\text{ }\!\!]\!\!\text{ }\]
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D)
\[\text{ }\!\![\!\!\text{ M}{{\text{L}}^{2}}{{\text{T}}^{\text{-3}}}\text{ }\!\!]\!\!\text{ }\]
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question_answer 3) A particle moving with a uniform acceleration travels 24 m and 64 m in the first two consecutive intervals of 4s each. Its initial velocity is
A)
1m/s
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B)
10m/s
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C)
5 m/s
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D)
2 m/s
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question_answer 4) A bullet is fired with a speed of 1000 m/s in order to hit a target 100 m away. If g = 10 m/s2. The gun should be aimed
A)
directly towards the target
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B)
5 cm above the target
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C)
10 cm above the target
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D)
15 cm above the target
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question_answer 5) A particle moves in the \[\text{xy-}\]plane under the action of a force \[\mathbf{\vec{F}}\] such that the components of its linear momentum \[\mathbf{\vec{P}}\] at any time t are \[{{P}_{x}}=2\,\cos \,t,\,{{P}_{y}}=2\,\sin \,t.\]The angle between F and p at time t is
A)
\[90{}^\circ \]
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B)
\[0{}^\circ \]
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C)
\[180{}^\circ \]
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D)
\[30{}^\circ \]
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question_answer 6) A uniform rope of length L, resting on a frictionless horizontal surface, is pulled at one end by a force F. The tension in the rope at a distance I from this end is
A)
F
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B)
\[\frac{l}{L}F\]
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C)
\[\frac{L}{l}F\]
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D)
\[\left( 1-\frac{l}{L} \right)F\]
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question_answer 7) A bicycle is in motion. The frictional force exerted by the ground on the two wheels acts
A)
backwards on the front wheel and forwards on the rear wheel
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B)
forwards on the front wheel and backwards on the rear wheel
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C)
backwards on both the wheel
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D)
forwards on both the wheels
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question_answer 8) If the momentum of a body increases by 50%, its kinetic energy will increase by
A)
50%
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B)
100%
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C)
125%
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D)
150%
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question_answer 9) In which case does the potential energy decrease?
A)
On compressing a spring
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B)
On stretching a spring
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C)
On moving a body against gravitational force
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D)
On the rising of an air bubble in water
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question_answer 10) A body is moved from rest along a straight line by a machine delivering constant power. The distance moved by the body in time t is proportional to
A)
\[{{t}^{1/2}}\]
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B)
\[{{t}^{3/4}}\]
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C)
\[{{t}^{3/2}}\]
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D)
\[{{t}^{2}}\]
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question_answer 11) The root-mean-square velocity for an ideal gas is (where the symbols have their usual meanings)
A)
\[{{v}_{rms}}=\sqrt{\frac{3MT}{R}}\]
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B)
\[{{v}_{rms}}=\sqrt{\frac{3RT}{M}}\]
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C)
\[{{v}_{rms}}=\sqrt{\frac{3RM}{T}}\]
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D)
\[{{v}_{rms}}=\sqrt{3RMT}\]
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question_answer 12) The radius of a rotating disc is suddenly reduced to half without any change in its mass. Then its angular velocity will be
A)
four times
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B)
double
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C)
half
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D)
unchanged
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question_answer 13) A heavy mass is attached to a thin wire and is whirled in a vertical circle. The wire is most likely to break
A)
when the mass is at the highest point of the circle
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B)
when the mass is at the lowest point of the circle
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C)
when the wire is horizontal
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D)
at an angle of cos-1 (1/3) from the upward vertical
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question_answer 14) The ratio of the weight of a man in a stationary lift and when it is moving downward with uniform acceleration \[a\] is 3 : 2. The value of \[a\] is (g = acceleration due to gravity of the earth)
A)
3/2 g
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B)
g/3
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C)
2/3 g
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D)
g
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question_answer 15) The masses and radii of the earth and moon are \[{{M}_{1}},\,{{R}_{1}}\] and \[{{M}_{2}},\,{{R}_{2}}\] respectively. Their centres are distance d apart. The minimum velocity with which a particle of mass m should be projected from a point midway between their centres so that it escapes to infinity is
A)
\[\sqrt[2]{\frac{G}{a}({{M}_{1}}+{{M}_{2}})}\]
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B)
\[\sqrt[2]{\frac{2G}{a}({{M}_{1}}+{{M}_{2}})}\]
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C)
\[\sqrt[2]{\frac{Gm}{a}({{M}_{1}}+{{M}_{2}})}\]
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D)
\[\sqrt[2]{\frac{Gm({{M}_{1}}+{{M}_{2}})}{d({{R}_{1}}+{{R}_{2}})}}\]
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question_answer 16) A geostationary satellite is taken from its orbit to another orbit. If the distance of the second orbit from the centre of the earth is double that of the first orbit, then its time period in the second orbit will be
A)
4.8 h
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B)
48\[\sqrt{2}\] h
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C)
48 h
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D)
24 h
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question_answer 17) Two wires of the same material have lengths in the ratio 1 : 2 and their radii are in the ratio 1: \[\sqrt{2}\]. If they are streched by applying equal forces, the increase in their lengths will be in the ratio
A)
2:\[\sqrt{2}\]
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B)
\[\sqrt{2}\]:2
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C)
1:1
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D)
1 : 2
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question_answer 18) The amount of work done in forming a soap film of size \[10cm\times 10cm\] (Surface tension \[T=3\times {{10}^{-2}}N/m\]) is
A)
\[6\times {{10}^{-4}}\text{J}\]
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B)
\[3\times {{10}^{-4}}\text{J}\]
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C)
\[6\times {{10}^{-3}}\text{J}\]
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D)
\[6\times {{10}^{-2}}\text{J}\]
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question_answer 19) A number of water droplets each of radius r coalesce to form a bigger drop of radius R. The rise in temperature is
A)
\[\frac{3T}{RJ}\]
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B)
\[\frac{3T}{rJ}\]
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C)
\[\frac{3T}{J}\left( \frac{1}{r}+\frac{1}{R} \right)\]
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D)
\[\frac{3T}{J}\left( \frac{1}{r}-\frac{1}{R} \right)\]
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question_answer 20) Air is filled at \[60{}^\circ C\] in a vessel of open mouth. The vessel is heated to a temperature T so that \[\frac{1}{4}\]th part of air escapes. The value of T is
A)
\[80{}^\circ C\]
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B)
\[444{}^\circ C\]
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C)
\[333{}^\circ C\]
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D)
\[171{}^\circ C\]
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question_answer 21) The specific heat of a gas
A)
has only two values \[{{C}_{P}}\] and \[{{C}_{V}}\]
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B)
has a unique value at a given temperature
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C)
can have any value between 0 and \[\infty \]
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D)
depends upon the mass of the gas
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question_answer 22) The pressure of a gas is equal to
A)
the total translation kinetic energy of all the molecules in unit volume
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B)
the total kinetic energy of all the molecules in unit volume
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C)
two thirds of the total translational kinetic energy of all the molecules in unit volume
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D)
two-thirds of the total kinetic energy of all the molecules in unit volume
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question_answer 23) During the adiabatic expansion of 2 moles of a gas, the internal energy was found to have decreased by 100 J. The work done by the gas in this process is
A)
zero
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B)
- 100 J
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C)
200 J
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D)
100 J
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question_answer 24) Two samples A and B of a gas, initially at the same pressure and temperature, are compressed from volume V to V/2 (A isothermally and B adiabatically) the final pressure of A is
A)
greater than the final pressure of B
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B)
equal to the final pressure of B
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C)
less than the final pressure of B
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D)
twice the final pressure of B
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question_answer 25) When the potential energy of a particle executing simple harmonic motion is one-fourth of its maximum value during the oscillation, its displacement from the equilibrium position in terms of its amplitude \[a\] is
A)
\[a\text{/4}\]
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B)
\[a\text{/3}\]
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C)
\[a\text{/2}\]
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D)
\[2a\text{/3}\]
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question_answer 26) A wall has two layers A and B, each made of a different material. Both the layers have the same thickness. The thermal conductivity of the material of A is twice that of B. Under thermal equilibrium, the temperature difference across the wall is \[36{}^\circ C\]. The temperature difference across the layer A is
A)
\[6{}^\circ C\]
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B)
\[12{}^\circ C\]
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C)
\[18{}^\circ C\]
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D)
\[24{}^\circ C\]
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question_answer 27) The temperature of two bodies A and B are respectively \[727{}^\circ C\] and \[327{}^\circ C\]. The ratio of rates of heat radiated by them is
A)
727:327
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B)
5 : 3
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C)
25 : 9
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D)
625 : 81
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question_answer 28) A body takes T minutes to cool from \[62{}^\circ C\] to \[61{}^\circ C\] when the surrounding temperature is \[30{}^\circ C\]. The time taken by the body to cool from \[46{}^\circ C\] to \[45.5{}^\circ C\] is
A)
greater than T minutes
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B)
equal to T minutes
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C)
less than T minutes
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D)
equal to T/2 minutes
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question_answer 29) 41forks are so arranged that each produces 5 beats/s when sounded with its near fork. If the frequency of last fork is double the frequency of first fork, then the frequencies of the first and last fork are respectively
A)
200, 400
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B)
205,410
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C)
195, 390
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D)
100, 200
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question_answer 30) A motor car blowing a horn of frequency 124 vib/s moves with a velocity 72 km/h towards a tall wall. The frequency of the reflected sound heard by the driver will be [velocity of sound in air is 330 m/s]
A)
109 vib/s
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B)
132 vib/s
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C)
140 vib/s
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D)
248 vib/s
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question_answer 31) Young's experiment establishes the fact that
A)
light consists of particles
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B)
light consists of waves
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C)
light consists of neither particles nor waves
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D)
fringe width do not depend on the separation of the two slits
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question_answer 32) In the context of Doppler effect in light, the term red shift signifies
A)
decrease in frequency
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B)
increase in frequency
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C)
decrease in intensity
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D)
increase in intensity
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question_answer 33) In a concave mirror experiment, an object is placed at a distance\[{{x}_{1}}\] from the focus and the image is formed at a distance \[{{x}_{2}}\] from the focus. The focal length of the mirror would be
A)
\[{{x}_{1}}{{x}_{2}}\]
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B)
\[\sqrt{{{x}_{1}}{{x}_{2}}}\]
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C)
\[\sqrt{{{x}_{1}}/{{x}_{2}}}\]
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D)
\[\frac{{{x}_{1}}+{{x}_{2}}}{2}\]
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question_answer 34) Which of the following is a correct relation?
A)
\[_{\text{a}}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{r}}}{{\text{=}}_{\text{a}}}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{w}}}\,\text{ }\!\!\times\!\!\text{ }{{\,}_{\text{r}}}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{w}}}\]
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B)
\[_{\text{a}}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{r}}}{{\times }_{\text{a}}}{{\mu }_{w}}\,{{=}_{\text{w}}}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{a}}}\]
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C)
\[_{a}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{r}}}/{{ }_{r}}{{\mu }_{a}}\,=0\]
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D)
\[_{\text{a}}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{r}}}/{{ }_{w}}{{\mu }_{r}}\,{{=}_{a}}{{\text{ }\!\!\mu\!\!\text{ }}_{w}}\]
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question_answer 35) The focal length of a thin lens is \[f\] and the diameter of its aperture is d. This makes an image of brightness \[I\]. If the central portion of the aperture be covered upto d/2 diameter by an opaque paper, then the focal length and the brightness of image would respectively be
A)
\[f\text{/2}\,\text{and}\,\text{I/2}\]
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B)
\[f\,\text{and}\,\text{I/4}\]
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C)
\[f\text{/2}\,\text{and}\,\text{I/4}\]
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D)
\[f\,\text{and}\,3\text{I/4}\]
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question_answer 36) Fraunhofer lines are an example of
A)
continuous spectrum
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B)
band spectrum
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C)
emission spectrum
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D)
absorption spectrum
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question_answer 37) The reason for shining of air bubble in water is
A)
diffraction of light
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B)
dispersion of light
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C)
scattering of light
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D)
total internal reflection of light
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question_answer 38) The dispersive powers of glasses of lenses used in an achromatic pair are in the ratio 5:3. If the focal length of the concave lens is 15 cm, then the nature and focal length the other lens would be
A)
convex, 9 cm
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B)
convex, 9 cm
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C)
convex, 25 cm
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D)
convex, 25 cm
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question_answer 39) White light is passed through a prism whose angle is \[5{}^\circ \]. If the refractive indices for rays of red and blue colors are respectively 1.64 and 1.66, the angle of deviation between the two colors will be
A)
0.1 degree
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B)
0.2 degree
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C)
0.3 degree
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D)
0.4 degree
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question_answer 40) The resolving limit of healthy eye is about
A)
\[1'\]
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B)
\[1''\]
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C)
\[1{}^\circ \]
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D)
\[\frac{1}{60}''\]
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question_answer 41) While viewing a distant object with a telescope suddenly a housefly sits on objective lens. The correct statement is that
A)
housefly will be seen enlarged in image
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B)
housefly will be seen reduced in image
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C)
intensity of image will be decreased
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D)
intensity of image will be increased
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question_answer 42) An object of height 1.5 cm is placed on the axis of a convex lens of focal length 25 cm. A real image is formed at a distance of 75 cm from the lens. The size of the image will be
A)
4.5cm
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B)
3.0cm
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C)
0.75cm
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D)
0.5cm
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question_answer 43) Work function of a metal is 2.51 eV. Its threshold frequency is
A)
\[5.9\times {{10}^{14}}cycle/s\]
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B)
\[6.5\times {{10}^{14}}cycle/s\]
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C)
\[9.4\times {{10}^{14}}cycle/s\]
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D)
\[6.08\times {{10}^{14}}cycle/s\]
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question_answer 44) Energy conversion in a photoelectric cell takes place from
A)
chemical to electrical
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B)
magnetic to electrical
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C)
optical to electrical
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D)
mechanical to electrical
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question_answer 45) The momentum of a photon in an X-ray beam of \[{{10}^{-10}}m\] wavelength is
A)
\[1.5\times {{10}^{-23}}kg-m/s\]
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B)
\[6.6\times {{10}^{-24}}kg-m/s\]
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C)
\[6.6\times {{10}^{-44}}kg-m/s\]
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D)
\[2.2\times {{10}^{-52}}kg-m/s\]
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question_answer 46) The rest energy of an electron is 0.511 MeV The electron is accelerated from rest to a velocity 0.5 c. The change in its energy will be
A)
0.026 MeV
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B)
0.051 MeV
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C)
0.079 MeV
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D)
0.105 MeV
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question_answer 47) X-rays from X-ray tube
A)
will be monochromatic
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B)
will have all possible wavelengths less than a certain longest wavelength
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C)
will have all possible wavelengths greater than a certain shortest wavelength
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D)
will have all wavelengths between the longest and the shortest wavelength
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question_answer 48) X-ray beam of intensity \[{{I}_{0}}\] passes through absorption plate of thickness d. If absorption coefficient of material of plate is µ, the correct statement regarding the transmitted intensity \[I\] of X-ray is
A)
\[I={{I}_{0}}(1-{{e}^{-\mu d}})\]
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B)
\[I={{I}_{0}}{{e}^{-\mu d}}\]
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C)
\[I={{I}_{0}}e(1-{{e}^{-\mu /d}})\]
done
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D)
\[I={{I}_{0}}{{e}^{-\mu /d}}\]
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question_answer 49) At zero kelvin a piece of germanium
A)
becomes semiconductor
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B)
becomes good conductor
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C)
becomes bad conductor
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D)
has maximum conductivity
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question_answer 50) Electronic configuration of germanium is 2, 8, 18 and 4. To make it extrinsic semiconductor small quantity of antimony is added
A)
the material obtained will be n-type germanium in which electrons and holes are equal in number
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B)
the material obtained will be p-type germanium
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C)
the material obtained will be n-type germanium which has more electrons then holes at room temperature
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D)
the material obtained will be n-type germanium which has less electrons than holes at room temperature
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question_answer 51) A semiconductor is cooled from \[T{{ }_{1}}\]K to \[T{{ }_{2}}\]K its resistance
A)
will decrease
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B)
will increase
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C)
will first decrease and then increase
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D)
will not change
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question_answer 52) In a hydrogen atom an electron moves in a circular orbit of radius \[5.2\times {{10}^{-11}}m\] and produces a magnetic induction of 12.56 T at its nucleus. The current produced by the motion of the electron will be (Given \[{{\mu }_{0}}=4\pi \times {{10}^{-7}}\] Wb/ Am)
A)
\[6.53\times {{10}^{-}}\text{A}\]
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B)
\[13.25\times {{10}^{-10}}\text{A}\]
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C)
\[9.6\times {{10}^{6}}\text{A}\]
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D)
\[1.04\times {{10}^{-3}}\text{A}\]
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question_answer 53) The \[{{K}_{\alpha }}\] line for molybdenum (atomic no. = 42) has a wavelength of \[0.7078\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]. The wavelength of\[{{K}_{\alpha }}\] line of zinc (atomic no. = 30) will be
A)
\[1\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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B)
\[1.388\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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C)
\[0.3541\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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D)
\[0.5\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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question_answer 54) In a hydrogen atom, which of the following electronic transitions would involve the maximum energy change?
A)
from n = 2 to n = 1
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B)
from n = 3 to n = 1
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C)
from n = 4 to n = 2
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D)
from n = 3 to n = 2
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question_answer 55) In the lowest energy level of hydrogen atom, the electron has the angular momentum
A)
\[\text{ }\!\!\pi\!\!\text{ /h}\]
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B)
\[\text{h/ }\!\!\pi\!\!\text{ }\]
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C)
\[\text{h/2 }\!\!\pi\!\!\text{ }\]
done
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D)
\[\text{2 }\!\!\pi\!\!\text{ /h}\]
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question_answer 56) In a radioactive decay, neither the atomic number nor the mass number changes. Which of the following would be emitted in the decay process?
A)
Proton
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B)
Neutron
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C)
Electron
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D)
Photon
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question_answer 57) The half-life of a radio isotope is 5 yr. What fraction of this material would decay in 15 yr?
A)
1
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B)
¾
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C)
7/8
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D)
1/8
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question_answer 58) The disintegration constant of a radioactive element is\[\lambda .\]Its half-life and means life are respectively
A)
\[1\text{/ }\!\!\lambda\!\!\text{ }\] and In \[\text{2/ }\!\!\lambda\!\!\text{ }\]
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B)
In \[\text{2/ }\!\!\lambda\!\!\text{ }\] and \[\text{1/ }\!\!\lambda\!\!\text{ }\]
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C)
\[\text{ }\!\!\lambda\!\!\text{ }\] (In 2)and \[\text{1/ }\!\!\lambda\!\!\text{ }\]
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D)
\[\text{ }\!\!\lambda\!\!\text{ /}\](In 2) and \[\text{1/ }\!\!\lambda\!\!\text{ }\]
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question_answer 59) Magnetic lines of force
A)
always intersect
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B)
are always closed
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C)
tend to crowd far away from the poles of a magnet
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D)
do not pass through vacuum
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question_answer 60) Rate of change of torque t with deflection \[\text{ }\!\!\theta\!\!\text{ }\] is maximum for a magnet suspended freely in a uniform magnetic field of induction B, when
A)
\[\text{ }\!\!\theta\!\!\text{ }\,\text{=}\,{{\text{0}}^{\text{o}}}\]
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B)
\[\text{ }\!\!\theta\!\!\text{ }\,\text{=}\,{{45}^{0}}\]
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C)
\[\text{ }\!\!\theta\!\!\text{ }\,\text{=}\,{{60}^{0}}\]
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D)
\[\text{ }\!\!\theta\!\!\text{ }\,\text{=}\,{{90}^{0}}\]
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question_answer 61) The angle of dip at a place on the earth gives
A)
the horizontal component of the earth's magnetic field
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B)
the location of the geographic meridian
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C)
the vertical component of the earth's field
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D)
the direction of the earth's magnetic field
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question_answer 62) The tangent galvanometer, when connected in series with a standard resistance can be used as
A)
an ammeter
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B)
a voltmeter
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C)
a wattmeter
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D)
Both an ammeter and a voltmeter
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question_answer 63) In the vibration magnetometer, the magnet kept in the stirrup when disturbed vibrates with a period, given by
A)
\[2\pi \sqrt{I/MB}\]
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B)
\[2\pi \sqrt{MB/I}\]
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C)
\[2\pi \sqrt{MBI}\]
done
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D)
\[2\pi \sqrt{I/g}\]
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question_answer 64) When the symbols have their usual meaning. An electric dipole is put in north-south direction in a sphere filled with water. Which statement is correct?
A)
Electric flux is coming towards sphere
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B)
Electric flux is coming out of sphere
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C)
Electric flux entering into sphere and leaving the sphere are same
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D)
Water does not permit electric flux to enter into sphere
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question_answer 65) Deuteron and \[\alpha \]-particle are put 1 A apart in air, magnitude of intensity of electric field due to deuteron at \[\alpha \]-particle is
A)
\[2.88\times {{10}^{11}}\text{N/C}\]
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B)
\[1.44\times {{10}^{11}}\text{N/C}\]
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C)
\[5.76\times {{10}^{11}}\text{N/C}\]
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D)
zero
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question_answer 66) The permittivity and permeability of vacuum are \[{{\varepsilon }_{0}}\] and \[{{\mu }_{0}}\] respectively. The corresponding quantities for a medium are \[\varepsilon \] and\[\mu .\] Refractive index of a medium is
A)
\[\sqrt{\frac{\mu \varepsilon }{\mu {{ }_{0}}{{\varepsilon }_{0}}}}\]
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B)
\[\frac{\mu {{ }_{0}}{{\varepsilon }_{0}}}{\sqrt{\mu \varepsilon }}\]
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C)
\[\frac{\sqrt{\mu {{ }_{0}}{{\varepsilon }_{0}}}}{\mu \varepsilon }\]
done
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D)
\[\sqrt{\frac{\mu {{ }_{0}}{{\varepsilon }_{0}}}{\mu \varepsilon }}\]
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question_answer 67) A force F acts between sodium and chlorine ions of salt (sodium chloride) when put 1 cm apart in the air. The permittivity of air and dielectric constant of water are \[{{\varepsilon }_{0}}\] and K respectively. When a piece of salt is put in water electrical force acting between sodium and chlorine ion 1 cm apart is
A)
\[F\]
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B)
\[FK\text{/}{{\text{ }\!\!\varepsilon\!\!\text{ }}_{\text{0}}}\]
done
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C)
\[\text{F/K}{{\text{ }\!\!\varepsilon\!\!\text{ }}_{\text{0}}}\]
done
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D)
\[\text{F/K}\]
done
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question_answer 68) The radii of two spheres forming a spherical condenser are 0.5 and 0.6 m. If a medium having dielectric constant 6 is completely filled in between, the capacity of the condenser will be
A)
\[3.3\times {{10}^{-10}}\text{F}\]
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B)
\[2\times {{10}^{-9}}\text{F}\]
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C)
\[2\text{F}\]
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D)
\[\text{18F}\]
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question_answer 69) A parallel plate capacitor is filled up by a substance of\[{{t}_{1}}\] thickness of dielectric constant \[{{K}_{1}}\] and other substance of \[{{t}_{2}}\] thickness of dielectric constant \[{{K}_{2.}}\] The capacity of this capacitor will be
A)
\[{{\varepsilon }_{0}}A/\left( \frac{{{t}_{1}}}{{{K}_{1}}}+\frac{{{t}_{2}}}{{{K}_{2}}} \right)\]
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B)
\[{{\varepsilon }_{0}}A/\left( \frac{{{K}_{1}}}{{{K}_{2}}}+\frac{{{K}_{2}}}{{{t}_{2}}} \right)\]
done
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C)
\[{{\varepsilon }_{0}}A/\left( \frac{{{t}_{1}}}{{{K}_{2}}}+\frac{{{t}_{2}}}{{{K}_{1}}} \right)\]
done
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D)
\[{{\varepsilon }_{0}}A/\left( \frac{{{K}_{2}}}{{{t}_{1}}}+\frac{{{K}_{1}}}{{{t}_{2}}} \right)\]
done
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question_answer 70) n identical condensers are joined in parallel and are charged to potential V. Now, they are separated and joined in series. Then, the total energy and potential difference of the combination will be
A)
energy remain the same and potential difference is also same
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B)
energy remain the same and potential difference is \[nV\]
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C)
energy increases n times and potential difference remains is \[nV\]
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D)
energy increases n times and potential difference remains same
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question_answer 71) The electromotive force of primary cell is 2 V. When it is short circuited it gives a current of 4 A. Its internal resistance in ohm is
A)
0.5
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B)
5.0
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C)
2.0
done
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D)
8.0
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question_answer 72) A potential differences of V is applied at the ends of a copper wire of length \[l\]and diameter d. On doubling only d, drift velocity
A)
becomes two times
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B)
becomes half
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C)
does not change
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D)
becomes one-fourth
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question_answer 73)
Three equal resistances each of value R. are joined as shown in the figure. The equivalent resistance between M and N is
A)
R
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B)
2R
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C)
R/2
done
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D)
R/3
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question_answer 74) In the measurement of a resistance by Wheatstone bridge the known and the unknown resistance are interchanged to neutralize
A)
end error
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B)
index error
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C)
error due to thermoelectric effect
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D)
random error
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question_answer 75) A thermoelectric couple is made from copper and iron. At hot junction, current
A)
flows from copper towards iron
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B)
flows from iron towards copper
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C)
flow decreases
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D)
flow increases
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question_answer 76) Which of the following is not a correct statement?
A)
Resistivity of electrolytes decreases on increasing temperature
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B)
Resistance of mercury falls on decreasing its temperature
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C)
When joined in series a 40 W bulb glows more than a 60W bulb
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D)
Resistance of 40 W bulb is less than the resistance of 60 W bulb
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question_answer 77) The relation between Farady constant F. electron charge e and Avogadro Number N is
A)
\[F=\text{N/e}\]
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B)
\[F=\text{Ne}\]
done
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C)
\[N=F{{\text{e}}^{2}}\]
done
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D)
\[F={{N}^{2}}\text{e}\]
done
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question_answer 78)
The voltage V and current \[I\] graph for s conductor at two different temperatures \[{{T}_{1}}\] and \[{{T}_{2}}\] are shown in the figure. The relation between \[{{T}_{1}}\] and \[{{T}_{2}}\] is
A)
\[{{T}_{1}}>{{T}_{2}}\]
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B)
\[{{T}_{1}}\approx {{T}_{2}}\]
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C)
\[{{T}_{1}}={{T}_{2}}\]
done
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D)
\[{{T}_{1}}<{{T}_{2}}\]
done
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question_answer 79) Two bulbs of 500 W and 200 W are manufactured to operate on 220 V line. The ratio of heat produced in 500 W and 200 W, in two cases, when firstly they are joined in parallel and secondly in series, will be
A)
5/2,2/5
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B)
5/2,5/2
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C)
2/5, 5/2
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D)
2/5, 2/5
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question_answer 80)
In the circuit as shown in the figure, the heat produced by \[6\,\,\Omega \] resistance due to current flowing in it is 60cal/s. The heat generated across\[3\,\,\Omega \] resistance per second will be
A)
30cal
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B)
60cal
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C)
100 cal
done
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D)
120 cal
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question_answer 81) The value of Faraday constant is
A)
\[9.65\times {{10}^{4}}C\]
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B)
\[9.65\times {{10}^{4}}\text{J}\]
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C)
\[6.03\times {{10}^{27}}\text{J}\]
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D)
\[1.6\times {{10}^{-19}}C\]
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question_answer 82) A proton and a deuteron both having the same kinetic energy, enter perpendicularly into a uniform magnetic field B. For motion of proton and deuteron on circular path of radius \[{{r}_{P}}\] and \[{{r}_{d}}\] respectively, the correct statement is
A)
\[{{r}_{d}}={{r}_{P}}\sqrt{2}\]
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B)
\[{{r}_{d}}\frac{{{r}_{P}}}{\sqrt{2}}\]
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C)
\[{{r}_{d}}={{r}_{P}}\]
done
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D)
\[{{r}_{d}}=2{{r}_{P}}\]
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question_answer 83) A short bar magnet placed with its axis at \[30{}^\circ \] with a uniform external magnetic field of 0.16 T experiences a torque of magnitude 0.032 J. The magnetic moment of the bar magnet will be
A)
0.23 J/T
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B)
0.40 J/T
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C)
0.80 J/T
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D)
zero
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question_answer 84)
Four wires each of length 2.0 n are bent into four loops P, Q, R and S and then suspended into uniform magnetic field. Same current is passed in each loop. Which statement is correct?
A)
Couple on loop P will be the highest
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B)
Couple on loop Q will be the highest
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C)
Couple on loop R will be the highest
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D)
Couple on loop S will be the highest
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question_answer 85) Force acting between two point charges (+q and + q) distance r apart in the air is F. One charge is rotated about the other charge on a circle of radius r. The work done will be
A)
\[F\times r\]
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B)
\[F\times 2\pi r\]
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C)
\[F\times 2r\]
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D)
zero
done
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question_answer 86)
A current \[I\] is flowing in a rectangular loop. It is put close to a wire (long and straight) such that wire is parallel to one of the arms of loop and lies in the plane of loop. If as shown in the figure, a steady current \[I\] flows in the wire, the loop
A)
will rotate about an axis parallel to wire
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B)
will move away from the wire
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C)
will move towards the wire
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D)
will remain steady
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question_answer 87) A current of 1 A is passed through a straight wire of length 2 m. The magnetic field at a point in air at a distance of 3 m from either end of wire and lying on the axis of wire will be
A)
\[\frac{{{\mu }_{0}}}{2\pi }\]
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B)
\[\frac{{{\mu }_{0}}}{4\pi }\]
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C)
\[\frac{{{\mu }_{0}}}{8\pi }\]
done
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D)
zero
done
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question_answer 88) 5 cm long solenoid having \[10\,\Omega \] resistance and 5 mH inductance is joined to a 10 V battery. At steady state the current through the solenoid (in ampere) will be
A)
5
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B)
1
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C)
2
done
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D)
zero
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question_answer 89)
A conducting wire is moving towards right in a magnetic field B. The direction of induced current in the wire is shown in the figure. The direction of magnetic field will be
A)
in the plane of paper pointing towards right
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B)
in the plane of paper pointing towards left
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C)
perpendicular to the plane of paper and downwards
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D)
perpendicular to the plane of paper and upwards
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question_answer 90) The north pole of a bar magnet is moved swiftly downward towards a closed coil and then second time it is raised upwards slowly. The magnitude and direction of the induced currents in the two cases will be
A)
First case Second case Low value clockwise Higher value anticlockwise
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B)
First case Second case Low value clockwise Equal value anticlockwise
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C)
First case Second case Higher value clockwise low value anticlockwise
done
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D)
First case Second case Higher value anticlockwise Low value clockwise
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question_answer 91) "The direction of the inducedcurrentina circuit is always such that it opposes the cause due to which it is produced." This law is named as
A)
Ohm's Law
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B)
Lenz's Law
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C)
Kirchhoffs Law
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D)
Faraday's Law
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question_answer 92) At a place the value of horizontal component of the earth's magnetic field H is \[3\times {{10}^{-5}}Wb/{{m}^{2}}.\] A metallic rod AB of length 2m placed in east-west direction, having the end A towards east, falls vertically downward with a constant velocity of 50 m/s. Which end of the rod becomes positively charged and what is the value of induced potential difference between the two ends?
A)
\[EndA,3\times {{10}^{-3}}mV\]
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B)
End A, 3 mV
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C)
\[End\text{ }B,3\times {{10}^{-3}}mV\]
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D)
End B, 3 mV
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question_answer 93) A circular coil of radius 5 cm has 500 turns of a wire. The approximate value of the coefficient of self-induction of the coil will be
A)
25 mH
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B)
\[25\times {{10}^{-3}}mH\]
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C)
\[50\times {{10}^{-3}}mH\]
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D)
\[50\times {{10}^{-3}}mH\]
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question_answer 94) An emf of 100 mV is induced in a coil when the current in another nearby coil becomes 10 A from zero in 0.1 s. The coefficient of mutual induction between the two coils will be
A)
1mH
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B)
10 mH
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C)
100 mH
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D)
1000 mH
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question_answer 95) A light source approaches the observer with velocity 0.8 c. The Doppler shift for the light of wavelength \[5500\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] is
A)
\[5500\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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B)
\[1833\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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C)
\[4400\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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D)
\[7333\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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question_answer 96) Two plates are 2 cm apart, a potential difference of 10 V is applied between them, the electric field between the plates is
A)
20N/C
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B)
500 N/C
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C)
5 N/C
done
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D)
250 N/C
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question_answer 97) A 120 V AC source is connected across a pure inductor of inductance 0.70 H. If the frequency of the source is 60 Hz, the current passing through the inductor is
A)
4.55 A
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B)
0.355 A
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C)
0.455 A
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D)
3.55 A
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question_answer 98) An AC generator produced an output voltage e = 170 sin 377 t volt, where t is in second. The frequency of AC voltage is
A)
50 Hz
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B)
110 Hz
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C)
60 Hz
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D)
230 Hz
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question_answer 99) In L-R circuit, for the case of increasing current, the magnitude of current can be calculated by using the formula
A)
\[I={{I}_{0}}{{e}^{-Rt/L}}\]
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B)
\[I={{I}_{0}}(1-{{e}^{-Rt/L}}\]
done
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C)
\[I={{I}_{0}}(1-{{e}^{Rt/L}})\]
done
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D)
\[I={{I}_{0}}{{e}^{Rt/L}}\]
done
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question_answer 100) The efficiency of transformer is very high because
A)
there is no moving part in a transformer
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B)
it produces very high voltage
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C)
it produces very low voltage
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D)
None of the above
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question_answer 101) Which is correct statement about proton?
A)
Proton is nucleus of deuterium
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B)
Proton is alpha particle
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C)
proton is ionized hydrogen molecule
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D)
Proton is ionized hydrogen
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question_answer 102) In a given atom no two electrons can have the same values of all the quantum numbers. This is called
A)
Hund's rule
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B)
Aufbau principle
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C)
Uncertainty principle
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D)
Pauli's exclusion principle
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question_answer 103) Magnetic quantum number specifies
A)
size of orbitals
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B)
shape of orbitals
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C)
orientation of orbitals
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D)
nuclear stability
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question_answer 104) The energy of an electron in nth orbit of hydrogen atom is
A)
\[\frac{13.6}{{{n}^{4}}}eV\]
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B)
\[\frac{13.6}{{{n}^{3}}}eV\]
done
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C)
\[-\frac{13.6}{{{n}^{2}}}eV\]
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D)
\[\frac{13.6}{n}eV\]
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question_answer 105) If wavelength of photon is \[2.2\times {{10}^{-11}}m,\] \[h=6.6\times {{10}^{-34}}Js,\] then momentum of photon is
A)
\[3\times {{10}^{-23}}kg\,m{{s}^{-1}}\]
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B)
\[3.33\times {{10}^{22}}kg\,m{{s}^{-1}}\]
done
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C)
\[1.452\times {{10}^{-44}}\,kg\,m{{s}^{-1}}\]
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D)
\[6.89\times {{10}^{43}}kg\,m{{s}^{-1}}\]
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question_answer 106) The bond order of \[NO\]molecule is
A)
\[1.5\]
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B)
\[2.0\]
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C)
\[2.5\]
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D)
\[3.0\]
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question_answer 107) The bond angle in water \[({{H}_{2}}O)\] molecule is
A)
\[{{109}^{o}}28'\]
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B)
\[{{180}^{o}}\]
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C)
\[{{90}^{o}}\]
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D)
\[{{105}^{o}}\]
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question_answer 108) The triple bond between N atoms of nitrogen molecule \[(N\equiv N)\] consists of
A)
three \[\sigma \]-bond
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B)
two \[\sigma \]-bonds and one \[\pi \]-bond
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C)
one \[\sigma \]-bond and two \[\pi \]-bonds
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D)
three \[\pi \]-bonds
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question_answer 109) According to VSEPR theory the most probable shape of the molecule having 4 electron pairs in the outer shell of the central atom is
A)
linear
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B)
tetrahedral
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C)
hexahedral
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D)
octahedral
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question_answer 110) The number of \[\sigma \] bonds in o-xylene is
A)
\[6\]
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B)
\[9\]
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C)
\[12\]
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D)
\[18\]
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question_answer 111) \[50\text{ }mL\]\[10\text{ }N\] \[{{H}_{2}}S{{O}_{4}},\]\[25\text{ }mL\]\[12N\] \[HCl\]and \[40\text{ }mL\]\[5N\]\[HN{{O}_{3}}\] were mixed together and the volume of the mixture was made \[1000\text{ }mL\]by adding water. The normality of the resultant solution will be
A)
\[1\text{ }N\]
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B)
\[\text{2 }N\]
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C)
\[\text{3 }N\]
done
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D)
\[\text{4 }N\]
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question_answer 112) Which of the following will have the highest boiling point at 1 atm pressure?
A)
\[0.1\,M\,\,NaCl\]
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B)
\[0.1\text{ }M\text{ }sucrose\]
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C)
\[0.1\text{ }M\text{ }BaC{{l}_{2}}\]
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D)
\[0.1\text{ }M\text{ }glucose\]
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question_answer 113) What will be the molality of a solution having \[18\text{ }g\]of glucose (mol. wt.\[=180\]) dissolved in \[500g\]of water?
A)
\[1m\]
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B)
\[0.5m\]
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C)
\[0.2m\]
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D)
\[2m\]
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question_answer 114) An aqueous solution freezes at \[-{{0.186}^{o}}C\] \[({{k}_{f}}={{1.86}^{o}};\,{{k}_{b}}={{0.512}^{o}})\]What is the elevation in boiling point?
A)
\[0.186\]
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B)
\[0.512\]
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C)
\[\frac{0.512}{1.86}\]
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D)
\[0.0512\]
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question_answer 115) Which one of the following is a colligative property?
A)
Surface tension
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B)
Osmotic pressure
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C)
Viscosity
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D)
Refractive index
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question_answer 116) How many kinds of space lattices are possible in a crystal?
A)
\[23\]
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B)
\[7\]
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C)
\[230\]
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D)
\[14\]
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question_answer 117) Diamond is an example of
A)
covalent solid
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B)
electrovalent solid
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C)
solid with hydrogen bonding
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D)
glass
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question_answer 118) What is Y in the following nuclear reaction? \[_{7}{{H}^{14}}{{+}_{1}}{{H}^{1}}{{\xrightarrow{{}}}_{8}}{{O}^{15}}+'X'\]
A)
\[_{0}{{n}^{1}}\]
done
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B)
\[_{-1}{{e}^{0}}\]
done
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C)
\[_{+1}{{e}^{0}}\]
done
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D)
Energy
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question_answer 119) The end product of \[(4n+2)\] radioactive disintegration series is
A)
\[_{82}^{208}Pb\]
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B)
\[_{82}^{206}Pb\]
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C)
\[_{82}^{207}Pb\]
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D)
\[_{83}^{210}Bi\]
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question_answer 120) The radioactive isotope which is used to estimate the age of ancient geological formations is
A)
\[{{O}^{8}}\]
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B)
\[P{{b}^{212}}\]
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C)
\[F{{e}^{59}}\]
done
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D)
\[_{6}{{C}^{14}}\]
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question_answer 121) The half-life period of a radioactive element is \[140\]days. In \[560\,days\]a sample of this element would be reduced to ......of its initial mass.
A)
\[1/2\]
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B)
\[1/4\]
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C)
\[1/8\]
done
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D)
\[1/16\]
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question_answer 122) For the homogeneous gas reaction, \[4N{{H}_{3}}+5{{O}_{2}}\rightleftharpoons 4NO+6{{H}_{2}}O\] the equilibrium constant \[{{K}_{c}},\] has the dimension of
A)
\[conc{{.}^{+10}}\]
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B)
\[conc{{.}^{+1}}\]
done
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C)
\[conc{{.}^{-1}}\]
done
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D)
it is dimensionless
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question_answer 123) Formation of the \[S{{O}_{3}}\] takes place according to the reaction \[2S{{O}_{2}}+{{O}_{2}}\rightleftharpoons 2S{{O}_{3}};\] \[\Delta H=-45.2kcal\] Which of the following factors favours the formation of \[S{{O}_{3}}\]?
A)
Increase in temperature
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B)
Increase in pressure
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C)
Removal of oxygen
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D)
Increase in volume
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question_answer 124) In the equilibrium reaction, \[2HI(g)\rightleftharpoons {{H}_{2}}+{{I}_{2}}\] which of the following expressions is true?
A)
\[{{K}_{p}}={{K}_{c}}\]
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B)
\[{{K}_{c}}=2{{K}_{p}}\]
done
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C)
\[{{K}_{p}}>{{K}_{c}}\]
done
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D)
\[{{K}_{c}}={{K}_{p}}{{(RT)}^{2}}\]
done
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question_answer 125) \[{{K}_{p}}/{{K}_{c}}\]for the reaction,\[CO(g)+\frac{1}{2}{{O}_{2}}(g)\rightleftharpoons C{{O}_{2}}(g)\] is
A)
\[1\]
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B)
\[RT\]
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C)
\[\frac{1}{\sqrt{RT}}\]
done
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D)
\[{{(RT)}^{1/2}}\]
done
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question_answer 126) A monoprotic acid in a \[0.1\text{ }M\]solution ionises to \[0.001%\]. Its ionisation constant is
A)
\[1.0\times {{10}^{-3}}\]
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B)
\[1.0\times {{10}^{-6}}\]
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C)
\[1.0\times {{10}^{-8}}\]
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D)
\[1.0\times {{10}^{-11}}\]
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question_answer 127) The pH of a \[{{10}^{-8}}\] molar solution of \[HCl\]in water is
A)
\[8\]
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B)
\[-8\]
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C)
between \[7\] and \[8\]
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D)
between \[6\] and \[7\]
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question_answer 128) Which of the following salts when dissolved in water hydrolyse?
A)
\[NaCl\]
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B)
\[N{{H}_{4}}Cl\]
done
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C)
\[KCl\]
done
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D)
\[N{{a}_{2}}S{{O}_{4}}\]
done
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question_answer 129) What is the correct representation for the solubility product of \[Sn{{S}_{2}}\]?
A)
\[[S{{n}^{2+}}]\,{{[{{S}^{2-}}]}^{2}}\]
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B)
\[[S{{n}^{4+}}]\,{{[{{S}^{2-}}]}^{2}}\]
done
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C)
\[[S{{n}^{2+}}]\,[2{{S}^{2-}}]\]
done
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D)
\[[S{{n}^{2+}}]\,{{[2{{S}^{2-}}]}^{2}}\]
done
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question_answer 130) If \[100\text{ }mL\] of \[1N\] hydrochloric acid were mixed with \[100\text{ }mL\] of \[1M\]sodium hydroxide, the solution will be
A)
acidic
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B)
basic
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C)
neutral
done
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D)
slightly acidic
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question_answer 131) Which of the following expressions represents the first law of thermodynamics?
A)
\[q=\Delta E-W\]
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B)
\[\Delta E=q-W\]
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C)
\[\Delta E=q+W\]
done
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D)
\[\Delta E=q+pdV\]
done
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question_answer 132) In a spontaneous process the entropy of the system and its surroundings
A)
equals zero
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B)
decreases
done
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C)
increases
done
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D)
remains constant
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question_answer 133) For the first order reaction with the constant k, which expression gives the half-life period? (Initial concentration = a)
A)
\[\frac{\ln \,2}{k}\]
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B)
\[\frac{1}{k\times a}\]
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C)
\[\frac{0.693}{k\times a}\]
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D)
\[\frac{3}{2k{{a}^{2}}}\]
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question_answer 134) The rate constant is given by the equation \[k=PZ{{e}^{-E/RT}},\] which factor should register a decrease for the reaction to proceed more rapidly?
A)
\[T\]
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B)
\[Z\]
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C)
\[E\]
done
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D)
\[P\]
done
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question_answer 135) For a reaction of the type \[A+B\to \]products, it is observed that doubling the concentration of A causes the reaction rate to be four times as great, but doubling the amount of B does not affect the rate. The rate equation is
A)
\[Rate=k[A]\,[B]\]
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B)
\[Rate=\frac{k}{4}{{[A]}^{2}}\]
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C)
\[Rate=k{{[A]}^{2}}[B]\]
done
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D)
\[Rate=k{{[A]}^{2}}{{[B]}^{2}}\]
done
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question_answer 136) Oxidation number of carbon in \[C{{H}_{3}}-Cl\]is
A)
\[-3\]
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B)
\[-2\]
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C)
\[-1\]
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D)
\[0\]
done
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question_answer 137) Which one of the following metals will not form an amalgam?
A)
Gold
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B)
Silver
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C)
Zinc
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D)
Iron
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question_answer 138) Incorrect statement regarding rusting is
A)
metallic iron is oxidised to \[F{{e}^{3+}}\]ions
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B)
metallic iron is reduced to \[F{{e}^{2-}}\] ions
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C)
oxygen gas is reduced to oxide ion
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D)
yellowish-brown product is formed
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question_answer 139) Which will be the proper alternative in place of A in the following equation? \[2F{{e}^{3+}}(aq)+S{{n}^{2+}}(aq)\xrightarrow{{}}2F{{e}^{2+}}(aq)+A\]
A)
\[S{{n}^{4+}}\]
done
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B)
\[S{{n}^{3+}}\]
done
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C)
\[S{{n}^{2+}}\]
done
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D)
\[S{{n}^{0}}\]
done
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question_answer 140) \[{{E}^{o}}=\frac{RT}{nF}\] In\[{{K}_{eq}},\] this equation is called
A)
Gibb's equation
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B)
Gibbs's-Helmholtz equation
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C)
Nernst equation
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D)
van der Waals' equation
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question_answer 141) Which of the following acts both as oxidising and reducing agent?
A)
\[HN{{O}_{3}}\]
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B)
\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
done
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C)
\[KMn{{O}_{4}}\]
done
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D)
\[{{H}_{2}}{{O}_{2}}\]
done
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question_answer 142) The oxidation number of oxygen in ozone is
A)
\[-3\]
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B)
\[-2\]
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C)
0 (zero)
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D)
\[+3\]
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question_answer 143) If an iron wire is placed in a solution of copper sulphate
A)
copper will precipitate out
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B)
iron will dissolve and precipitate out thereafter
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C)
iron and copper both will go into solution
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D)
no reaction will take place
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question_answer 144) To which of the following, the mass of an element deposited at an electrode is directly proportional?
A)
Atomic weight
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B)
Equivalent weight
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C)
Molecular weight
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D)
Atomic number
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question_answer 145) From the solution of which of the following one faraday of electricity will liberate one gram atom of metal?
A)
\[NaCl\]
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B)
\[BaC{{l}_{2}}\]
done
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C)
\[CuS{{O}_{4}}\]
done
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D)
\[AlC{{l}_{3}}\]
done
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question_answer 146) In which of the following, oxygen has an oxidation state of \[+2\]?
A)
\[{{H}_{2}}{{O}_{2}}\]
done
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B)
\[C{{O}_{2}}\]
done
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C)
\[{{H}_{2}}O\]
done
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D)
\[O{{F}_{2}}\]
done
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question_answer 147) Point out the false statement.
A)
Brownian movement and Tyndall effect is shown by colloidal systems
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B)
Gold number is a measure of the protective power of a lyophilic colloid
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C)
The colloidal solution of a liquid in liquid is called gel
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D)
Hardy-SchuIze rule is related with coagulation
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question_answer 148) Which one of the following will have the highest coagulating power for a ferric hydroxide sol?
A)
\[NaCl\]
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B)
\[BaC{{l}_{2}}\]
done
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C)
\[{{K}_{2}}Cr{{O}_{4}}\]
done
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D)
\[{{K}_{4}}[Fe{{(CN)}_{6}}]\]
done
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question_answer 149) Which of the following statement is false?
A)
A catalyst is specific in its action
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B)
A very small amount of the catalyst alters the rate of a reaction
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C)
The number of free valencies on the surface of the catalyst increases on subdivision
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D)
\[Ni\] is used as catalyst in the manufacture of ammonia
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question_answer 150) The natural materials from which an element can be extracted economically are called
A)
ores
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B)
minerals
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C)
Gangue
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D)
None of these
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question_answer 151) When a metal is to be extracted from its ore, if the gangue associated with the ore is silica, then
A)
An acidic flux is needed
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B)
a basic flux is needed
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C)
Both acidic and basic flux are needed
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D)
Neither of them is needed
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question_answer 152) An example of an oxide ore is
A)
Bauxite
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B)
malachite
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C)
Zinc blende
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D)
feldspar
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question_answer 153) In the Hoopes process, for refining of aluminium, the fused materials form three different layers and they remain separated during electrolysis also, this is because
A)
the upper layer is kept attracted by the cathode and the lower layer is kept attracted by the anode
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B)
There is special arrangement in the cell to keep the layers separate
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C)
the three layers have different densities
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D)
The three layers are maintained at different temperatures
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question_answer 154) In galvanisation, iron surface is coated with
A)
tin
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B)
chromium
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C)
zinc
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D)
nickel
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question_answer 155) In order to refine "Blister copper" it is melted in a furnace and is stirred with green logs of wood. The purpose is
A)
To expel the dissolved gases in blister copper
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B)
To bring the impurities to surface and oxidize them
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C)
To increase the carbon content of copper
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D)
To reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood
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question_answer 156) On going from right to left in a period in the periodic table, the electronegativity of the elements
A)
Increases
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B)
Decreases
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C)
Remains unchanged
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D)
Decreases first then increases
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question_answer 157) In the periodic table, the element with atomic number 16 will be placed in the group
A)
third
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B)
fourth
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C)
fifth
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D)
sixth
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question_answer 158) Metals belonging to the same group in the periodic table are
A)
Magnesium and sodium
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B)
Magnesium and copper
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C)
Magnesium and barium
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D)
Magnesium and potassium
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question_answer 159) The electronic configuration in the outermost shell of halogens is
A)
\[{{s}^{2}}{{p}^{4}}\]
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B)
\[{{s}^{2}}{{p}^{5}}\]
done
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C)
\[{{s}^{2}}{{p}^{3}}\]
done
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D)
\[{{s}^{2}}{{p}^{6}}\]
done
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question_answer 160) The ionic radii \[{{N}^{3-}},\] \[{{O}^{2-}},\] \[{{F}^{-}}\]and \[N{{a}^{+}}\]follow the order
A)
\[{{N}^{3-}}>{{O}^{2-}}>{{F}^{-}}>N{{a}^{+}}\]
done
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B)
\[N{{a}^{3-}}>N{{a}^{+}}>{{O}^{2-}}>{{F}^{-}}\]
done
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C)
\[N{{a}^{+}}>{{O}^{2-}}>N{{a}^{3-}}>{{F}^{-}}\]
done
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D)
\[{{O}^{2-}}>{{F}^{-}}>N{{a}^{+}}>N{{a}^{3-}}\]
done
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question_answer 161) Which of the following electronic configurations is of a transition element?
A)
\[~1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}4{{s}^{2}}\]
done
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B)
\[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{10}}4{{s}^{2}}4{{p}^{1}}\]
done
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C)
\[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{p}^{6}}3{{d}^{10}}4{{s}^{2}}4{{p}^{6}}\]
done
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D)
\[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{2}}4{{s}^{2}}\]
done
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question_answer 162) Nessler's reagent is
A)
\[K{{H}_{g}}{{I}_{4}}\]
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B)
\[{{K}_{2}}Hg{{I}_{4}}+N{{H}_{4}}OH\]
done
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C)
\[{{K}_{2}}Hg{{I}_{4}}+KOH\]
done
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D)
\[KHg{{I}_{4}}+N{{H}_{4}}OH\]
done
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question_answer 163) Very dilute nitric acid reacts with zinc to form zinc nitrate and
A)
Ammonium nitrate
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B)
\[N{{O}_{2}}\]
done
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C)
\[NO\]
done
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D)
\[{{N}_{2}}O\]
done
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question_answer 164) By passing \[{{H}_{2}}S\] gas in acidified\[KMn{{O}_{4}}\]. solution, we get
A)
\[{{K}_{2}}S\]
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B)
\[S\]
done
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C)
\[{{K}_{2}}S{{O}_{3}}\]
done
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D)
\[Mn{{O}_{2}}\]
done
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question_answer 165) If molecular weight of \[KMn{{O}_{4}}\] is ?M? then its equivalent weight in acidic medium would be
A)
\[M\]
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B)
\[M/2\]
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C)
\[M/5\]
done
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D)
\[M/4\]
done
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question_answer 166) \[Xe{{F}_{6}}\] on hydrolysis gives
A)
\[Xe{{O}_{3}}\]
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B)
\[XeO\]
done
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C)
\[Xe{{O}_{2}}\]
done
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D)
\[Xe\]
done
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question_answer 167) Which one of the following should be most stable?
A)
\[H_{2}^{+}\]
done
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B)
\[{{H}^{+}}\]
done
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C)
\[{{H}^{-}}\]
done
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D)
\[H\]
done
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question_answer 168) Molecular formula of Glauber's salt is
A)
\[MgS{{O}_{4}},7{{H}_{2}}O\]
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B)
\[CuS{{O}_{4}},5{{H}_{2}}O\]
done
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C)
\[FeS{{O}_{4}}.7{{H}_{2}}O\]
done
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D)
\[N{{a}_{2}}S{{O}_{4}}.10{{H}_{2}}O\]
done
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question_answer 169) The metal that is extracted from sea water is
A)
\[Mg\]
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B)
\[Ca\]
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C)
\[Fe\]
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D)
\[Ni\]
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question_answer 170) Which of the following oxides reacts with \[HCl\] and\[NaOH\]?
A)
\[CaO\]
done
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B)
\[ZnO\]
done
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C)
\[{{N}_{2}}{{O}_{5}}\]
done
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D)
\[C{{O}_{2}}\]
done
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question_answer 171) The most basic element is
A)
fluorine
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B)
iodine
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C)
chlorine
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D)
bromine
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question_answer 172) An example of a double salt is
A)
Bleaching powder
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B)
Hypo
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C)
\[{{K}_{4}}{{[Fe(CN)]}_{6}}\]
done
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D)
Potash alum
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question_answer 173) Precipitate of \[AgCl\] dissolves in \[N{{H}_{4}}OH\] due to formation of a complex
A)
\[[Ag{{(N{{H}_{4}})}_{2}}]Cl\]
done
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B)
\[[Ag{{(N{{H}_{4}})}_{3}}]Cl\]
done
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C)
\[[Ag{{(N{{H}_{3}})}_{2}}]Cl\]
done
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D)
\[[Ag{{(N{{H}_{3}})}_{2}}OH]\]
done
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question_answer 174) The number of ions per mole of a complex \[[CoC{{l}_{2}}.{{(N{{H}_{3}})}_{4}}]Cl\] in aqueous solution will be
A)
nine
done
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B)
four
done
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C)
three
done
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D)
two
done
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View Answer play_arrow
question_answer 175) \[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]N{{O}_{2}}\] and \[[Co{{(N{{H}_{3}})}_{4}}ClN{{O}_{2}}]Cl\] are isomers of which type?
A)
Geometrical
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B)
Optical
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C)
Linkage
done
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D)
Ionization
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question_answer 176) Which one of the following sulphides is only completely precipitated when the acidic solution is made dilute?
A)
\[HgS\]
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B)
\[PbS\]
done
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C)
\[CdS\]
done
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D)
\[CuS\]
done
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question_answer 177) Which of the following combines with \[F{{e}^{2+}}\] ions to form a brown complex?
A)
\[{{N}_{2}}O\]
done
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B)
\[NO\]
done
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C)
\[{{N}_{2}}{{O}_{3}}\]
done
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D)
\[{{N}_{2}}{{O}_{5}}\]
done
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question_answer 178) Which of the following substances consists of only one element?
A)
Marble
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B)
Sand
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C)
Diamond
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D)
Glass
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question_answer 179) An organic compound with \[C=40%\]and \[H=6.7%\]will have the empirical formula
A)
\[C{{H}_{2}}\]
done
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B)
\[C{{H}_{2}}O\]
done
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C)
\[{{C}_{3}}{{H}_{6}}{{O}_{3}}\]
done
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D)
\[{{C}_{2}}{{H}_{4}}{{O}_{2}}\]
done
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question_answer 180) The IUPAC name of the compound is \[C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C}}\,}}\,H-C{{H}_{2}}-C{{H}_{2}}-Cl\]
A)
1-chloro-3-methylbutane
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B)
2-methyl-4-chlorobutane
done
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C)
2-methyl-1-chlorobutane
done
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D)
1-chloropentane
done
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View Answer play_arrow
question_answer 181) An organic compound will show optical isomerism if
A)
Four groups attached to C atom are different
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B)
Three groups attached to C atom are different
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C)
Two groups attached to C atom are different
done
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D)
All the groups attached to C atom are same
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question_answer 182) The arrangement of hydrogen atoms around carbon in the methane molecule is
A)
Triangular
done
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B)
Square planar
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C)
Tetrahedral
done
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D)
Hexagonal
done
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question_answer 183) The reaction between an Alkyl halide and sodium metal in dry ether is called
A)
Clemmensen reduction
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B)
Kolbe's reaction
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C)
Wurtz reaction
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D)
Cannizaro's reaction
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question_answer 184) Ethylene may be obtained by dehydration of which of the following with concentrated \[{{H}_{2}}S{{O}_{4}}\] at\[160-{{170}^{o}}C\]?
A)
\[{{C}_{2}}{{H}_{5}}OH\]
done
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B)
\[C{{H}_{3}}OH\]
done
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C)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\]
done
clear
D)
\[{{(C{{H}_{3}})}_{2}}CHC{{H}_{2}}OH\]
done
clear
View Answer play_arrow
question_answer 185) Ethylene reacts with bromine to form
A)
\[Br-C{{H}_{2}}-C{{H}_{3}}\]
done
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B)
\[C{{H}_{3}}-C-B{{r}_{3}}\]
done
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C)
\[Br-C{{H}_{2}}-C{{H}_{2}}-Br\]
done
clear
D)
\[CHB{{r}_{3}}\]
done
clear
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question_answer 186) The shape of methane molecule is
A)
Tetrahedral
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B)
Triangular
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C)
Planar
done
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D)
Octahedral
done
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question_answer 187) When chloroform is left open in light and air, it forms
A)
Methylene chloride
done
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B)
Formic acid
done
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C)
Carbon tetrachloride
done
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D)
Phosgene
done
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question_answer 188) Distinction is made between ethyl alcohol and methyl alcohol by
A)
Chloroform test
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B)
Victor Meyer test
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C)
Rate of esterification
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D)
Iodoform test
done
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question_answer 189) Chloroform on reduction with zinc and \[HCl\] forms
A)
Formic acid
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B)
Chloropicrin
done
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C)
Methyl chloride
done
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D)
Phosgene
done
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question_answer 190) From which of the following tertiary butyl alcohol is obtained by the action of methyl magnesium iodide?
A)
\[HCHO\]
done
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B)
\[C{{H}_{3}}CHO\]
done
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C)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
clear
D)
\[C{{O}_{2}}\]
done
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View Answer play_arrow
question_answer 191) For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of a saturated carboxylic acid is subjected to
A)
Hydrolysis
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B)
Oxidation
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C)
Hydrogenation
done
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D)
Electrolysis
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question_answer 192) If formaldehyde and \[KOH\]are heated, then we get
A)
Acetylene
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B)
Methane
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C)
Methyl alcohol
done
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D)
Ethyl formate
done
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question_answer 193) Which of the following reagent reacts differently with \[HCHO,\]\[C{{H}_{3}}CHO\] and\[C{{H}_{3}}COC{{H}_{3}}\]?
A)
\[HCN\]
done
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B)
\[N{{H}_{2}}N{{H}_{2}}\]
done
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C)
\[N{{H}_{2}}OH\]
done
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D)
\[N{{H}_{3}}\]
done
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View Answer play_arrow
question_answer 194) Identify the product C in the series\[C{{H}_{3}}CN\xrightarrow{Na/{{C}_{2}}{{H}_{5}}OH}A\xrightarrow{HN{{O}_{2}}}B\]\[\xrightarrow{\begin{smallmatrix} Tollen's \\ reagent \end{smallmatrix}}C\]
A)
\[C{{H}_{3}}COOH\]
done
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B)
\[C{{H}_{3}}C{{H}_{2}}NHOH\]
done
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C)
\[C{{H}_{3}}CON{{H}_{2}}\]
done
clear
D)
\[C{{H}_{3}}CHO\]
done
clear
View Answer play_arrow
question_answer 195) Lower carboxylic acid are soluble in-water due to
A)
Low molecular weight
done
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B)
Hydrogen bonding
done
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C)
Dissociation into ions
done
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D)
Easy hydrolysis
done
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View Answer play_arrow
question_answer 196) Ethyl acetate reacts with \[C{{H}_{3}}MgBr\]to form
A)
Secondary alcohol
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B)
Tertiary alcohol
done
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C)
Primary alcohol and acid
done
clear
D)
Acid
done
clear
View Answer play_arrow
question_answer 197) Which is used for the formation of nylon 66?
A)
Sulphur hexafluoride
done
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B)
Adipic acid
done
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C)
Sulphurous acid
done
clear
D)
Phthalic acid
done
clear
View Answer play_arrow
question_answer 198) Which of the following statements is false in the context of enzyme?
A)
Temperature affects their functioning
done
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B)
pH affects their functioning
done
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C)
They always increase activation energy
done
clear
D)
Their reactions are specific
done
clear
View Answer play_arrow
question_answer 199) Oils and fats together are called
A)
enzymes
done
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B)
soaps
done
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C)
polymer
done
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D)
lipids
done
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question_answer 200) The secondary structure of proteins is due to
A)
Peptide bond
done
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B)
Hydrogen bond
done
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C)
van der Waals' forces
done
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D)
Ionic bond
done
clear
View Answer play_arrow
question_answer 201) Whose secretion forms the peari?
A)
Prismatic layer
done
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B)
Columnar epithelial cells of mantle
done
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C)
Ciliated epithelial cells of mantle
done
clear
D)
Connective tissue of mantle
done
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View Answer play_arrow
question_answer 202) Striped muscles are present in
A)
lungs
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B)
gallbladder
done
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C)
blood vessels
done
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D)
limb muscles
done
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question_answer 203) The stored food material found in muscles is
A)
protein
done
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B)
glycogen
done
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C)
lipid
done
clear
D)
phosphogen
done
clear
View Answer play_arrow
question_answer 204) Striped muscles are
A)
syncytial
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B)
uninucleate
done
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C)
binucleate
done
clear
D)
anucleate
done
clear
View Answer play_arrow
question_answer 205) The main function of tendon is
A)
to join two bones
done
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B)
to join two muscles
done
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C)
to join muscles and bones
done
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D)
to join muscles and nerves
done
clear
View Answer play_arrow
question_answer 206) Nails are formed by
A)
bones
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B)
chitin
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C)
cartilage
done
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D)
keratin
done
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question_answer 207) In our body, the blood bank is
A)
red bone marrow
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B)
spleen
done
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C)
liver
done
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D)
heart
done
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View Answer play_arrow
question_answer 208) What type of poison is ethylene dichloride?
A)
Stomach poison
done
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B)
Contact poison
done
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C)
Fumigant
done
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D)
Biological control
done
clear
View Answer play_arrow
question_answer 209) Vocal cords are situated at
A)
pharynx
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B)
larynx
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C)
glottis
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D)
bronchial tube
done
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question_answer 210) Cutaneous glands are
A)
gastric glands
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B)
sebaceous glands
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C)
thyroid gland
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D)
thymus gland
done
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question_answer 211) Desmosome is the modification of
A)
Golgi bodies
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B)
endoplasmic membrane
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C)
plasma membrane
done
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D)
ER-nucleus complex
done
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question_answer 212) Bilirubin and biliverd in are present in
A)
pancreatic juice
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B)
saliva
done
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C)
bile juice
done
clear
D)
intestinal juice
done
clear
View Answer play_arrow
question_answer 213) Enzyme 'renin' is secreted by
A)
cells of stomach
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B)
cells of intestine
done
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C)
the cortical cells of kidney
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D)
the cells of juxtaglomerular apparatus of kidney
done
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View Answer play_arrow
question_answer 214) Dental formula of man is
A)
\[\frac{2123}{2123}\]
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B)
\[\frac{1223}{1223}\]
done
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C)
\[\frac{2132}{2132}\]
done
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D)
\[\frac{2213}{2213}\]
done
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View Answer play_arrow
question_answer 215) Muscles of alimentary canal are chiefly
A)
striated and neurogenic
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B)
un striated and neurogenic
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C)
striated and myogenic
done
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D)
un striated and myogenic
done
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View Answer play_arrow
question_answer 216) What is the total vital capacity of lungs in man?
A)
500 mL
done
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B)
2,000 mL
done
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C)
4,600 mL
done
clear
D)
5,800 mL
done
clear
View Answer play_arrow
question_answer 217) Loop of Henie is meant for absorption of
A)
potassium
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B)
glucose
done
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C)
water
done
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D)
\[C{{O}_{3}}\]
done
clear
View Answer play_arrow
question_answer 218) In muscular contraction
A)
ATP breaks
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B)
ATP is formed
done
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C)
GTP breaks
done
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D)
None of these
done
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View Answer play_arrow
question_answer 219) pH of human blood is
A)
8.4
done
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B)
7.4
done
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C)
6.4
done
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D)
5.4
done
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View Answer play_arrow
question_answer 220) Oxygen is transported by
A)
blood plasma
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B)
leucocytes
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C)
RBC
done
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D)
thrombocytes
done
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question_answer 221) Lymph is colourless because
A)
WBCs are absent
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B)
WBCs are present
done
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C)
Haemoglobin is absent
done
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D)
RBCs are absent
done
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View Answer play_arrow
question_answer 222) Lymph (nodes) glands forms
A)
hormones
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B)
lymph
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C)
antigens
done
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D)
antibodies
done
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View Answer play_arrow
question_answer 223) In human beings, the function of spleen is
A)
to assist kidneys
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B)
to control blood pressure
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C)
to assist liver
done
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D)
to produce blood
done
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View Answer play_arrow
question_answer 224) Bowman's capsule is part of
A)
uriniferous tubule
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B)
renal artery
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C)
renal portal vein
done
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D)
ureter
done
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View Answer play_arrow
question_answer 225) Filtration takes place in
A)
Malpighian capsule
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B)
Bowman's capsule
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C)
glomerulus
done
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D)
collecting tubule
done
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View Answer play_arrow
question_answer 226) Main function of cerebellum is
A)
balancing
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B)
to see
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C)
to hear
done
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D)
remembering
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View Answer play_arrow
question_answer 227) Third ventricle is present in
A)
heart
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B)
brain
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C)
kidney
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D)
liver
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View Answer play_arrow
question_answer 228) The centre for sense of smell in brain is
A)
cerebellum
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B)
cerebrum
done
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C)
olfactory lobes
done
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D)
midbrain
done
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question_answer 229) The nerve related with diaphragm is
A)
vagus
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B)
phrenic
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C)
trigeminal
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D)
glossopharyngeal
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question_answer 230) Cowper's gland is present in
A)
cockroach
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B)
rabbit
done
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C)
earthworm
done
clear
D)
frog
done
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View Answer play_arrow
question_answer 231) Monoestrous animals are those which have
A)
one menses each month
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B)
one evularion each month
done
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C)
one egg
done
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D)
one breeding season in the year
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View Answer play_arrow
question_answer 232) For ovulation in reflex ovulators
A)
coitus is not necessary
done
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B)
coitus is necessary
done
clear
C)
plenty of food is necessary
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D)
plenty of food is not necessary
done
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View Answer play_arrow
question_answer 233) In sexually reproducing animals, the union of male and female gamete forms a cell which is called
A)
ovarian cell
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B)
oocyte
done
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C)
zygote
done
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D)
Graafian follicle
done
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View Answer play_arrow
question_answer 234) Fertilization occurs in
A)
ovary
done
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B)
fallopian tube
done
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C)
uterus
done
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D)
None of these
done
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View Answer play_arrow
question_answer 235) Quadriceps and gastrocnemius muscles lie in
A)
hands
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B)
legs
done
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C)
shoulder
done
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D)
wrist
done
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View Answer play_arrow
question_answer 236) The emergency hormone is
A)
thyroxin
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B)
adrenalin
done
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C)
insulin
done
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D)
progesterone
done
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View Answer play_arrow
question_answer 237) In a sperm, the mitochondria occur
A)
in tail
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B)
in acrosome
done
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C)
in middle piece
done
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D)
in head
done
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View Answer play_arrow
question_answer 238) Life-span of human RBC is
A)
120 days
done
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B)
90 days
done
clear
C)
2-3 days
done
clear
D)
20 days
done
clear
View Answer play_arrow
question_answer 239) Only rods are present in the eyes of one of the following animal
A)
pigeon
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B)
squirrel
done
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C)
fowl
done
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D)
owl
done
clear
View Answer play_arrow
question_answer 240) Pharynx and middle ear are interconnected by
A)
tympanic canal
done
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B)
eustachian canal
done
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C)
cochlear canal
done
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D)
vestibular canal
done
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View Answer play_arrow
question_answer 241) Proprioceptors refers to the ailment of
A)
chemicals
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B)
temperature
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C)
taste
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D)
change in the internal environment of the body
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View Answer play_arrow
question_answer 242) From outer to inside the sequence of three bones present in the middle ear of mammals is
A)
incus, malleus and stapes
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B)
malleus, incus and stapes
done
clear
C)
malleus, stapes and incus
done
clear
D)
stapes, malleus and incus
done
clear
View Answer play_arrow
question_answer 243) How many kinds of cells are found in islets Langerhans?
A)
1
done
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B)
2
done
clear
C)
3
done
clear
D)
4
done
clear
View Answer play_arrow
question_answer 244) Diabetes insipidus is under the control of
A)
All dosterone
done
clear
B)
ADH
done
clear
C)
ACTH
done
clear
D)
TSH
done
clear
View Answer play_arrow
question_answer 245) FSH and LH hormones together are called
A)
emergency
done
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B)
gonadotropic hormones
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C)
neurohormones
done
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D)
outstress hormones
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View Answer play_arrow
question_answer 246) Parathormone deficiency in man causes
A)
hypercalcemia
done
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B)
hypocalcemia
done
clear
C)
goiter
done
clear
D)
All of these
done
clear
View Answer play_arrow
question_answer 247) Gorilla like man with large heads and protruding jaws, is produced due to
A)
over secretion of thyroxin
done
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B)
over secretion growth hormone since maturity
done
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C)
excess of vitamin-'C' in diet
done
clear
D)
excess secretion of TSH
done
clear
View Answer play_arrow
question_answer 248) Which one controls the secretion of estrogen
A)
HCG
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B)
Progesterone
done
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C)
LH
done
clear
D)
FSH
done
clear
View Answer play_arrow
question_answer 249) At cellular level, GH affects growth by controlling die production of
A)
rRNA
done
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B)
t-RNA
done
clear
C)
mRNA
done
clear
D)
None of these
done
clear
View Answer play_arrow
question_answer 250) Which of the following vitamins is essential for DNA synthesis and cell division ?
A)
Vitamin-A
done
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B)
Vitamin-D
done
clear
C)
Folic acid
done
clear
D)
Vitamin-K
done
clear
View Answer play_arrow
question_answer 251) Marasmum disease is caused due to
A)
protein deficiency
done
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B)
obesity
done
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C)
dwarfism
done
clear
D)
deficiency of vitamins
done
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View Answer play_arrow
question_answer 252) The brain develops from
A)
ectoderm
done
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B)
mesoderm
done
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C)
endoderm
done
clear
D)
meso-endoderm
done
clear
View Answer play_arrow
question_answer 253) The acrosome plays important role in
A)
motility of sperm
done
clear
B)
penetration of ovum by sperm
done
clear
C)
providing energy to sperm
done
clear
D)
None of these
done
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View Answer play_arrow
question_answer 254) The eggs of placental mammals are described as
A)
microlecithal
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B)
telolecithal
done
clear
C)
centrolecithal
done
clear
D)
macrolecithal
done
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View Answer play_arrow
question_answer 255) Oogenesis is the process for the formation of
A)
red blood cells
done
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B)
sperms
done
clear
C)
ova
done
clear
D)
sperms and ova
done
clear
View Answer play_arrow
question_answer 256) The third phase in the development of mammal is
A)
cleavage
done
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B)
gastrulation
done
clear
C)
gametogenesis
done
clear
D)
fertilization
done
clear
View Answer play_arrow
question_answer 257) During ageing, collagen present in intercellular spaces becomes
A)
Destroyed
done
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B)
Impremeable and rigid
done
clear
C)
More elastic
done
clear
D)
All of the above
done
clear
View Answer play_arrow
question_answer 258) The theory of ageing holds that ageing is due to
A)
random mutation in DNA of somatic cells
done
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B)
increased cross-linkage of collagen and other proteins
done
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C)
cumulative result of damage to tissues by free radicals
done
clear
D)
All of the above
done
clear
View Answer play_arrow
question_answer 259) If mother has blood group B, father has A group, the offspring will be of
A)
A group
done
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B)
O group
done
clear
C)
Any of the group
done
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D)
AB group
done
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View Answer play_arrow
question_answer 260) Erythroblastosis foetalis occurs when
A)
husband is \[R{{h}^{-}}\] and wife \[R{{h}^{-}}\]
done
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B)
wife is \[R{{h}^{-}}\]and husband \[R{{h}^{-}}\]
done
clear
C)
wife is \[R{{h}^{-}}\]and husband \[R{{h}^{+}}\]
done
clear
D)
wife is \[R{{h}^{-}}\]and husband \[R{{h}^{+}}\]
done
clear
View Answer play_arrow
question_answer 261)
Match List \[\text{I}\] with List \[\text{II}\] and select the correct answer using the codes given below List \[\text{I}\] (Inheritable disease) List\[\text{II}\] (Symptoms) (A) Achondroplasia 1. Blood coagulation delayed due to absence of factor IX (B) Cystinuria 2. Darkness due to short limb bones, head is normal (C) Epilepsy 3. Periodic convulsions and unconsciousness (D) Christmas disease 4. Renal stone formation due to excessive excretion of cytine in urine
Codes:
A)
A-1 A-2 A-3 A-4
done
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B)
B-2 B-4 B-3 B-1
done
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C)
C-4 C-3 C-2 C-1
done
clear
D)
D-3 D-4 D-1 D-2
done
clear
View Answer play_arrow
question_answer 262) The frequency of mutant gene in a population is expected to increase if that gene is
A)
dominant
done
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B)
recessive
done
clear
C)
sex linked
done
clear
D)
favourably selected
done
clear
View Answer play_arrow
question_answer 263) Abzymes are
A)
abnormal enzymes
done
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B)
enzymes act on antibodies
done
clear
C)
antibodies act as enzymes
done
clear
D)
All of the above
done
clear
View Answer play_arrow
question_answer 264) Whereas the number of chromosomes is reduced to half in first reduction division of meiosis, then what is the need for second mitotic division?
A)
For the segregation of replicated chromosomes
done
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B)
For equal distribution of haploid chromosomes
done
clear
C)
For the formation of four gametes
done
clear
D)
For equal distribution of genes on chromosomes
done
clear
View Answer play_arrow
question_answer 265) During systole
A)
auricles and ventricles contract simultaneously
done
clear
B)
auricles and ventricles contract separately
done
clear
C)
only auricles contract
done
clear
D)
only ventricles contract
done
clear
View Answer play_arrow
question_answer 266) Hybridoma technology was developed by
A)
Taggart; 1982
done
clear
B)
Prie and Saxton; 1987
done
clear
C)
Vitella et al; 1982
done
clear
D)
Kohler and Milstein; 1982
done
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View Answer play_arrow
question_answer 267) In F2 generation, quantitative inheritance 1:4: 6 : 4 : 1 is obtained instead of
A)
8 : 6 : 4 : 1
done
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B)
7 : 4 :1: 4
done
clear
C)
9 : 3 : 3 : 1
done
clear
D)
6 : 6 : 4 : 7
done
clear
View Answer play_arrow
question_answer 268) Acromion process is found in rabbit in
A)
pectoral girdle
done
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B)
femur
done
clear
C)
vertebral column
done
clear
D)
pelvic girdle
done
clear
View Answer play_arrow
question_answer 269) The most, commonly used enzyme for polymerase chain reaction is
A)
DNA polymerase\[\text{-II}\]
done
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B)
Reverse transcriptase
done
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C)
Klenow fragment
done
clear
D)
Taq polymerase
done
clear
View Answer play_arrow
question_answer 270) In humans, sex determination of the offspring is decided by the
A)
sex chromosome of mother
done
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B)
sex chromosome of father
done
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C)
size of ovum
done
clear
D)
size of sperm
done
clear
View Answer play_arrow
question_answer 271) If somatic cells of a human male contain single Barr body, the genetic composition of the person would be
A)
XYY
done
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B)
XXY
done
clear
C)
XO
done
clear
D)
XXXY
done
clear
View Answer play_arrow
question_answer 272) The main cause of paralysis is
A)
some defect in muscles
done
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B)
complete destruction of sensory nerves
done
clear
C)
complete destruction of motor nerves
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 273) Sex ratio in a species indicates the numerical relation between the number of
A)
male and female producing gametes
done
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B)
blacks and whites
done
clear
C)
unisexual and bisexual
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 274) Systema naturae is concerned with
A)
solar system
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B)
ecosystem
done
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C)
classification of plants and animals
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D)
natural selection
done
clear
View Answer play_arrow
question_answer 275) Phylogeny tells about
A)
life history of animals
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B)
group of phyla
done
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C)
evolutionary history of a species from its ancestors
done
clear
D)
castes of flies
done
clear
View Answer play_arrow
question_answer 276) Which of the following classes has largest number of animals?
A)
Mammalia
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B)
Pisces
done
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C)
Insecta
done
clear
D)
Reptilia
done
clear
View Answer play_arrow
question_answer 277) Cray fish is a
A)
crustacean animal
done
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B)
edible fish
done
clear
C)
poisonous fish
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 278) Which of the following is not found in vertebrates?
A)
Bilateral symmetry
done
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B)
Gill opening
done
clear
C)
Body scales
done
clear
D)
Cnidoblasts
done
clear
View Answer play_arrow
question_answer 279) A species defined as "the group of actually or potentially inter-breeding natural population producing fertile offspring and reproductive isolated from other groups" The above statement is given by
A)
Carolus Linnaeus
done
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B)
Mayr
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C)
J B Lamarck
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D)
Charles Darwin
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question_answer 280) Origin of life took place in/on
A)
water
done
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B)
air
done
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C)
mountains
done
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D)
land
done
clear
View Answer play_arrow
question_answer 281) Homologous organs are
A)
similar in origin
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B)
similar in function
done
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C)
similar in development
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D)
similar in behavior
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question_answer 282) Vestigial organs are those organs, which are
A)
characteristic of birds
done
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B)
not of much use today
done
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C)
helpful in locomotion
done
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D)
common
done
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question_answer 283) Lamarckian theory deals with
A)
acquired characters
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B)
germplasm
done
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C)
struggle for existence
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D)
mutation
done
clear
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question_answer 284) A species is produced by loss or disappearance of a few characters founds in parent. It is termed as
A)
progressive species
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B)
retrogressive species
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C)
successive species
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clear
D)
digressive species
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clear
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question_answer 285) Isinglass, a type of byproduct of fish industry is principally used for
A)
feeding catle, pigs and poultry
done
clear
B)
preparation of paints and varnishes
done
clear
C)
clarification of vinegar, wines and beer
done
clear
D)
production of insulin
done
clear
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question_answer 286) Which one of the following combination is generally recommended for composite fish farming in India?
A)
Caria, Cyprinus, Clarias
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B)
Caria, Labeo, Cirrhinus
done
clear
C)
Cirrhinus, Cyprinus, Channa
done
clear
D)
Clarias, Chanos, Cyprinus
done
clear
View Answer play_arrow
question_answer 287) The indigenous adult fish, which may be used most effectively for the biological control of mosquitoes is
A)
Aplocheilus
done
clear
B)
Gambusia
done
clear
C)
Legistes
done
clear
D)
Caria
done
clear
View Answer play_arrow
question_answer 288) The disease 'Oriental sore' is caused by
A)
bacteria
done
clear
B)
virus
done
clear
C)
Protozoa
done
clear
D)
fungus
done
clear
View Answer play_arrow
question_answer 289) The carrier of Trypanosoma in man is
A)
house fly
done
clear
B)
mosquito
done
clear
C)
honey bee
done
clear
D)
tse tse fly
done
clear
View Answer play_arrow
question_answer 290) The carrier of virus causing human yellow fever is
A)
mosquito
done
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B)
bug
done
clear
C)
louse
done
clear
D)
beetle
done
clear
View Answer play_arrow
question_answer 291) Which of the following is the cancerous state of blood?
A)
Chloremia
done
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B)
Leukaemia
done
clear
C)
Uremia
done
clear
D)
Proteinemia
done
clear
View Answer play_arrow
question_answer 292) Against, which of the following does interferon act?
A)
Bacteria
done
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B)
Virus
done
clear
C)
Fungus
done
clear
D)
Snake venom
done
clear
View Answer play_arrow
question_answer 293) Which of the following is a sexually transmitted disease?
A)
Malaria
done
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B)
Syphilis
done
clear
C)
Goiter
done
clear
D)
Tuberculosis
done
clear
View Answer play_arrow
question_answer 294) Jaundice is caused by
A)
contaminated water
done
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B)
pork
done
clear
C)
excessive sugar
done
clear
D)
excessive eating of Curcuma
done
clear
View Answer play_arrow
question_answer 295) AIDS can be transmitted by
A)
blood circulation
done
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B)
handshake
done
clear
C)
courtship
done
clear
D)
All of the above
done
clear
View Answer play_arrow
question_answer 296) Smoking addiction is harmful because it produces polycyclic aromatic hydrocarbons which cause
A)
reduction in oxygen transport
done
clear
B)
increase in blood pressure
done
clear
C)
cancer
done
clear
D)
retardation of growth of foetus
done
clear
View Answer play_arrow
question_answer 297) Alcohol addiction is harmful because it causes
A)
protein depositions in liver
done
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B)
deposition of extra fat in liver
done
clear
C)
rise in blood sugar level
done
clear
D)
cancer
done
clear
View Answer play_arrow
question_answer 298) Dudhawa national park is located in
A)
Madhya Pradesh
done
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B)
Himachal Pradesh
done
clear
C)
Arunachal Pradesh
done
clear
D)
Uttar Pradesh
done
clear
View Answer play_arrow
question_answer 299) BHC and DDT belong to which class of pesticides?
A)
Organophosphates
done
clear
B)
Organochlorines
done
clear
C)
Carbonates
done
clear
D)
Triazines
done
clear
View Answer play_arrow
question_answer 300) All chordates at one or the other stage have
A)
pharyngeal gill slits
done
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B)
vertebral column
done
clear
C)
two pairs of pentadacyle limb
done
clear
D)
a movable jaw
done
clear
View Answer play_arrow
question_answer 301) Which is not character of mitosis?
A)
Leptotene
done
clear
B)
Zygotene
done
clear
C)
Pachytene
done
clear
D)
All of these
done
clear
View Answer play_arrow
question_answer 302) Who called the living matter of the cell as protoplasm?
A)
Purkinje
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B)
Virchow
done
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C)
Hooke
done
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D)
Khorana
done
clear
View Answer play_arrow
question_answer 303) How many types of cells are known?
A)
One
done
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B)
Two
done
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C)
Four
done
clear
D)
Five
done
clear
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question_answer 304) In which, mitosis does not occur?
A)
Green algae
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B)
Fungi
done
clear
C)
Bacteria
done
clear
D)
higher plants
done
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View Answer play_arrow
question_answer 305) A mature plant cell has
A)
cell wall
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B)
vacuole
done
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C)
protoplasm
done
clear
D)
All of these
done
clear
View Answer play_arrow
question_answer 306) In which, plastids are not found?
A)
Blue-green algae
done
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B)
Bacteria
done
clear
C)
Fungi
done
clear
D)
All of the above
done
clear
View Answer play_arrow
question_answer 307) Repulsion of homologous chromosomes takes place in
A)
zygotene
done
clear
B)
leptotene
done
clear
C)
diakinesis
done
clear
D)
diplotene
done
clear
View Answer play_arrow
question_answer 308) In eukaryotic cell, the type of ribosome is
A)
Only 70S
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B)
Only 80S
done
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C)
Both [a] and [b]
done
clear
D)
Only SOS
done
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View Answer play_arrow
question_answer 309) Synthesis of DNA takes place in
A)
\[{{G}_{1}}\]
done
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B)
\[~{{G}_{2}}\]
done
clear
C)
S
done
clear
D)
None of these
done
clear
View Answer play_arrow
question_answer 310) The genetic material of prokaryotic cells is called
A)
nucleus
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B)
nucleolus
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C)
nucleoid
done
clear
D)
centrosome
done
clear
View Answer play_arrow
question_answer 311) Which organelle of plant secretes polysaccharide and protein to make cell walls?
A)
Golgi bodies
done
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B)
Lysosome
done
clear
C)
Mitochondria
done
clear
D)
Chloroplast
done
clear
View Answer play_arrow
question_answer 312) RNA contains which of the following base, in place of thymine of DNA?
A)
Thymine
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B)
Uracil
done
clear
C)
Adenine
done
clear
D)
None of these
done
clear
View Answer play_arrow
question_answer 313) The main function of lysosome is in
A)
only extracellular digestion
done
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B)
only intracellular digestion
done
clear
C)
Both [a] and [d]
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 314) Eukaryotic cell has
A)
chromatin fibre
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B)
definite nucleus
done
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C)
incipient nucleus
done
clear
D)
None of these
done
clear
View Answer play_arrow
question_answer 315) At which stage of mitosis, chromatids separse and start moving towards poles?
A)
Prophase
done
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B)
Metaphase
done
clear
C)
Anaphase
done
clear
D)
Telophase
done
clear
View Answer play_arrow
question_answer 316) TMV contains
A)
DNA
done
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B)
RNA + Protein
done
clear
C)
DNA + RNA
done
clear
D)
DNA + Protein
done
clear
View Answer play_arrow
question_answer 317) Four daughter cells formed after meiosis are
A)
genetically similar
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B)
genetically different
done
clear
C)
anucleate
done
clear
D)
multinucleate
done
clear
View Answer play_arrow
question_answer 318) The synthesis of lipids and lipoproteins is associated with
A)
endoplasmic reticulum
done
clear
B)
mitochondria
done
clear
C)
chloroplast
done
clear
D)
lysosomes
done
clear
View Answer play_arrow
question_answer 319) DNA strands are and parallel because
A)
H-bonds
done
clear
B)
phosphate diester bonds
done
clear
C)
disulphide bonds
done
clear
D)
phosphate bonds
done
clear
View Answer play_arrow
question_answer 320) Cell theory was proposed by
A)
Schleiden and Schwann
done
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B)
Waston and Crick
done
clear
C)
Darwin and Wallace
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D)
Mendel and Morgan
done
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question_answer 321) During meiosis the division of centromere takes place in
A)
first prophase
done
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B)
first anaphase
done
clear
C)
second metaphase
done
clear
D)
second anaphase
done
clear
View Answer play_arrow
question_answer 322) Which one of the following is not found in animal cell?
A)
Nucleus
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B)
Golgi bodies
done
clear
C)
Chloroplast
done
clear
D)
Mitochondria
done
clear
View Answer play_arrow
question_answer 323) Unit membrane consists of
A)
Lipid + Sugar + Protein
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B)
Protein + Lipid + Protein
done
clear
C)
Lipid + Protein + Lipid
done
clear
D)
Protein
done
clear
View Answer play_arrow
question_answer 324) Translation is the process, in which
A)
DNA is formed on DNA template
done
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B)
RNA is formed on DNA template
done
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C)
DNA is formed on RNA template
done
clear
D)
Protein is formed from mRNA
done
clear
View Answer play_arrow
question_answer 325) Linkage was first studied by
A)
Darwin
done
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B)
Morgan
done
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C)
Bateson and Punned
done
clear
D)
Mendel
done
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View Answer play_arrow
question_answer 326) Principal constituents of chromosomes are
A)
DNA
done
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B)
RNA
done
clear
C)
Both [a] and [b]
done
clear
D)
tRNA
done
clear
View Answer play_arrow
question_answer 327) Who explained the Operon model for the first time?
A)
Francois Jacob
done
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B)
Jacques Monod
done
clear
C)
Both [a] and [b]
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 328) The enzyme responsible for transcription is
A)
DNA polymerase-I
done
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B)
RNA polymerase
done
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C)
Reverse transcriptase
done
clear
D)
DNA polymerase-III
done
clear
View Answer play_arrow
question_answer 329) Initiation codon is
A)
AUG
done
clear
B)
UAG
done
clear
C)
UGA
done
clear
D)
UAA
done
clear
View Answer play_arrow
question_answer 330) The direction of DNA replication is
A)
from 5' end towards 3' end
done
clear
B)
from 3' end towards 5' end
done
clear
C)
amino terminus to carboxy terminus
done
clear
D)
carboxy terminus to amino terminus
done
clear
View Answer play_arrow
question_answer 331) Extra chromosomal genetic material found in bacteria is
A)
plasmid
done
clear
B)
micro some
done
clear
C)
ribosome
done
clear
D)
None of these
done
clear
View Answer play_arrow
question_answer 332) Functional unit of gene is
A)
muton
done
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B)
recon
done
clear
C)
cistron
done
clear
D)
codon
done
clear
View Answer play_arrow
question_answer 333) A mutant micro-organism unable to synthesize a compound required for its growth but able to grow if the compound is provided, is known as
A)
auxotroph
done
clear
B)
prototroph
done
clear
C)
autotroph
done
clear
D)
None of these
done
clear
View Answer play_arrow
question_answer 334) Incomplete dominance is found in
A)
Pisum sativum
done
clear
B)
Antirrhinum majus
done
clear
C)
Both [a] and [b]
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 335) Shape of chromosome is determined by
A)
telomere
done
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B)
centromere
done
clear
C)
chromomere
done
clear
D)
centrosome
done
clear
View Answer play_arrow
question_answer 336) How many types of genotypes are formed in \[{{F}_{2}}\] progeny obtained from self pollination of a dihybrid \[{{F}_{1}}\]?
A)
9
done
clear
B)
3
done
clear
C)
6
done
clear
D)
1
done
clear
View Answer play_arrow
question_answer 337) Functioning of structural genes is controlled by
A)
operator
done
clear
B)
promoter
done
clear
C)
ligase
done
clear
D)
regulatory gene
done
clear
View Answer play_arrow
question_answer 338) Domestic cooking gas cylinder is filled with
A)
alcohol
done
clear
B)
diesel oil
done
clear
C)
liquid petroleum gas
done
clear
D)
coal gas
done
clear
View Answer play_arrow
question_answer 339) Sometimes when a virus attacks a bacterium, neither the virus multiplies nor the bacterium does. This phenomenon is called
A)
adsorption
done
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B)
assimilation
done
clear
C)
lysogeny
done
clear
D)
viral stability
done
clear
View Answer play_arrow
question_answer 340) An organism having cytoplasm, DNA and RNA but no cell wall is
A)
cyano bacterium
done
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B)
mycoplasma
done
clear
C)
bacterium
done
clear
D)
virus
done
clear
View Answer play_arrow
question_answer 341) Among the following which are the smallest organisms?
A)
Bacteria
done
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B)
Mycoplasma
done
clear
C)
Nostoc
done
clear
D)
Virus
done
clear
View Answer play_arrow
question_answer 342) The genetic material in viruses is
A)
in some viruses both DNA and RNA
done
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B)
only RNA
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C)
only DNA
done
clear
D)
in some viruses only DNA and in some only RNA
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View Answer play_arrow
question_answer 343) One of the useful activities of several bacteria is
A)
nitrogen fixation
done
clear
B)
nitrification
done
clear
C)
operation of biogeochemical cycles
done
clear
D)
All of the above
done
clear
View Answer play_arrow
question_answer 344) In a bacterial cell, the organelle with respiratory enzymes is
A)
mitochondria
done
clear
B)
chondrisome
done
clear
C)
mesosome
done
clear
D)
centrosome
done
clear
View Answer play_arrow
question_answer 345) Circular DNA molecule occurs in
A)
viruses
done
clear
B)
bacteria, chloroplasts and mitochondria
done
clear
C)
bacteria and chloroplasts only
done
clear
D)
bacteria only
done
clear
View Answer play_arrow
question_answer 346) A bacteriophage is a
A)
virus attacking another virus
done
clear
B)
stage in the life cycle of a bacterium
done
clear
C)
bacterium attacking a virus
done
clear
D)
virus attacking a bacterium
done
clear
View Answer play_arrow
question_answer 347) The cells of the bacterium Streptococcus remain arranged in the form of
A)
chain
done
clear
B)
irregular cluster
done
clear
C)
cube
done
clear
D)
plate
done
clear
View Answer play_arrow
question_answer 348) The main function of elementary bodies in mycoplasma is
A)
reproduction
done
clear
B)
nutrition
done
clear
C)
secretion
done
clear
D)
respiration
done
clear
View Answer play_arrow
question_answer 349) The water of Holy Gang as river is pure due to the presence of
A)
cyanophages
done
clear
B)
hydrophytes
done
clear
C)
bacteria
done
clear
D)
bacteriophages
done
clear
View Answer play_arrow
question_answer 350) Which one of the following can utilize molecular nitrogen \[({{N}_{2}})\] as nutrient for growth?
A)
Khizobium
done
clear
B)
Spirogyra
done
clear
C)
Mucor
done
clear
D)
Methanococcus
done
clear
View Answer play_arrow
question_answer 351) In Pinus, male and female reproductive structures occur?
A)
On different branches of the same plant
done
clear
B)
On different plants
done
clear
C)
On same branch
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 352) The cell wall of Spirogyra is made up of
A)
cellulose
done
clear
B)
pectin
done
clear
C)
lignin
done
clear
D)
chitin
done
clear
View Answer play_arrow
question_answer 353) Stomata in Funaria are found in
A)
capsule
done
clear
B)
foot
done
clear
C)
seta
done
clear
D)
nowhere
done
clear
View Answer play_arrow
question_answer 354) A bisexual flower, which never opens in life is known as
A)
homogamous
done
clear
B)
heterogamous
done
clear
C)
dichogamous
done
clear
D)
cleistogamous
done
clear
View Answer play_arrow
question_answer 355) Eichhornia crassipes is a
A)
desert plant
done
clear
B)
parasite
done
clear
C)
water plant
done
clear
D)
terrestrial plant
done
clear
View Answer play_arrow
question_answer 356) Plants of salty seashore wet-lands are call?
A)
halophytes
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B)
heliophytes
done
clear
C)
hydrophytes
done
clear
D)
saprophytes
done
clear
View Answer play_arrow
question_answer 357) If testa is removed from water soaked gram seed, the remaining structure is
A)
full mature embryo
done
clear
B)
cotyledons with endosperm and perican
done
clear
C)
cotyledons filled with starch
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 358) Double fertilization means fusion of
A)
one of the polar nuclei with the other one male gamete with egg cell
done
clear
B)
one of the male gamete with polar nuclei and other with antipodal cells
done
clear
C)
one of the male gamete with secondary nucleus and the other male gamete with egg cell
done
clear
D)
one antipodal cell with egg cell and synergid cell with antipodal cell
done
clear
View Answer play_arrow
question_answer 359) Double fertilization was first discovered by Nawaschin (1898) in
A)
Lilium and Fritillaria
done
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B)
mango and sugarcane
done
clear
C)
papaya and pea
done
clear
D)
Brassica and candytuft
done
clear
View Answer play_arrow
question_answer 360) In an angiospermic plant, endosperm is formed due to fertilization of secondary nucleus but is absent in some of the seeds viz pea bean Phaseolus (moong) etc. It is due to lack of
A)
certain enzymes
done
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B)
dicotyledonous hormone
done
clear
C)
growth hormone
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 361) A component of xylem is
A)
sieve tube
done
clear
B)
medullary ray
done
clear
C)
sclereid
done
clear
D)
tracheid
done
clear
View Answer play_arrow
question_answer 362) A group of cells alike in forms, function and origin is called
A)
organ
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B)
organelle
done
clear
C)
tissue
done
clear
D)
None of these
done
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View Answer play_arrow
question_answer 363) Hard, lignified, thick walled, long and pointed cells in a plant are
A)
parenchyma
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B)
sclerenchyma
done
clear
C)
collenchyma
done
clear
D)
sclereids
done
clear
View Answer play_arrow
question_answer 364) The meristem, which develops into a primary vascular tissue is
A)
protonema
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B)
promeristem
done
clear
C)
ground meristem
done
clear
D)
procambium
done
clear
View Answer play_arrow
question_answer 365) Which one of the following elements is required for photosynthesis oxygen evolution?
A)
Copper
done
clear
B)
Iron
done
clear
C)
Manganese
done
clear
D)
Zinc
done
clear
View Answer play_arrow
question_answer 366) Sinks are related to
A)
transport of organic solutes
done
clear
B)
stomata
done
clear
C)
enzymes
done
clear
D)
phytochrome
done
clear
View Answer play_arrow
question_answer 367) Supply ends in transport of solute are
A)
green leaves and storage organs
done
clear
B)
root and stem
done
clear
C)
xylem and phloem
done
clear
D)
Hormones and enzymes
done
clear
View Answer play_arrow
question_answer 368) Stomata can open at night also in
A)
xerophyte
done
clear
B)
gametophyte
done
clear
C)
hydrophyte
done
clear
D)
None of these
done
clear
View Answer play_arrow
question_answer 369) Who had said that 'transpiration is a necessary evil'?
A)
Curtis
done
clear
B)
Steward
done
clear
C)
Anderson
done
clear
D)
J C Bose
done
clear
View Answer play_arrow
question_answer 370) Agranal chloroplasts occur in certain
A)
succulents
done
clear
B)
\[{{C}_{3}}-\]plants
done
clear
C)
\[{{C}_{4}}-\]plants
done
clear
D)
hydrophytes
done
clear
View Answer play_arrow
question_answer 371) The wavelength of light most absorbed during photosynthesis is
A)
400nm
done
clear
B)
550nm
done
clear
C)
660nm
done
clear
D)
70nm
done
clear
View Answer play_arrow
question_answer 372) Which are related with photorespiration?
A)
Spherosome
done
clear
B)
Lysosomes
done
clear
C)
Glyoxysomes
done
clear
D)
Peroxisomes
done
clear
View Answer play_arrow
question_answer 373) The end product of glycolysis is
A)
glucose
done
clear
B)
fructose
done
clear
C)
pyruvic acid
done
clear
D)
ethyl alcohol
done
clear
View Answer play_arrow
question_answer 374) RQ is more than one in case of
A)
fat
done
clear
B)
fructose
done
clear
C)
glucose
done
clear
D)
organic add
done
clear
View Answer play_arrow
question_answer 375) Enzymes concerned with transfer of electrons are
A)
hydrolysases
done
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B)
dehydrogenases
done
clear
C)
transminases
done
clear
D)
proteases
done
clear
View Answer play_arrow
question_answer 376) Nitrogen is the essential component of
A)
carbohydrates
done
clear
B)
fats
done
clear
C)
proteins
done
clear
D)
oil
done
clear
View Answer play_arrow
question_answer 377) Phytochrome was discovered by
A)
W Went
done
clear
B)
Gamer and Allard
done
clear
C)
F F Blackman
done
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D)
R Hill
done
clear
View Answer play_arrow
question_answer 378) The activity of a-amylase in the endospore of barley germinating seed is induced by
A)
ethylene
done
clear
B)
cytokinin
done
clear
C)
IAA
done
clear
D)
gibberellins
done
clear
View Answer play_arrow
question_answer 379) A pigment concerned with both floral induction and seed germination is
A)
florigen
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B)
chlorophyll
done
clear
C)
plastocyanin
done
clear
D)
phytochrome
done
clear
View Answer play_arrow
question_answer 380) Name the famous plant ecologist
A)
Jagdish Chandra Bose
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B)
Birbal Sahani
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C)
Ramdeva Mishra
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D)
Charles Darwin
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View Answer play_arrow
question_answer 381) Possibilities of presence of coal in a particular area can be guessed by the study of
A)
Economic botany
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B)
Ecology
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C)
pollen grain analysis
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D)
mining the area
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question_answer 382) The significance of ecosystem lies in
A)
flow of energy
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B)
cycling of matter
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C)
Both [a] and [b]
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D)
None of the above
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question_answer 383) Biological equilibrium is found among the
A)
producers and consumers
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B)
producers and decomposers
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C)
producers, consumers and decomposers
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D)
producers and light
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question_answer 384) The number of individual of a species in a particular ecosystem at a given time remains constant due to
A)
man
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B)
parasites
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C)
predators
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D)
available food
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question_answer 385) The two components of an ecosystem are
A)
biotic and abiotic
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B)
plants and animals
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C)
weeds and micro-organisms
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D)
plants and light
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question_answer 386) The pyramid of number in a grassland ecosystem is
A)
linear
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B)
upright
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C)
irregular
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D)
inverted
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question_answer 387) One of the important effects of \[S{{O}_{2}}\] and its transformation products on plants is
A)
plasmolysis
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B)
destruction of chlorophyll
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C)
destruction of Golgi bodies
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D)
destruction of cell wall
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question_answer 388) Major pollutant present in the jet plane emission is
A)
carbon tetrachloride
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B)
sulphur dioxide
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C)
carbon monoxide
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D)
fluorocarbon
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question_answer 389) Sewage water is purified for recycling by the action of
A)
light
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B)
micro-organisms
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C)
aquatic plants
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D)
fishes
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question_answer 390) Spraying of DDT on crops produces pollution of
A)
soil and water
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B)
air and soil
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C)
crops and air
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D)
air and water
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question_answer 391) Which one is not dangerous
A)
bio pollutants
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B)
ozone layer
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C)
nuclear blast
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D)
deforestation
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question_answer 392) A drug from root, which causes mental disorder and reduces blood pressure is obtained from
A)
Rauwolfia serpentine
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B)
Atropa baladona
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C)
Colchicum luteum
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D)
Digitalis purpurea
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question_answer 393) Maximum sugarcane grown in
A)
Madhya Pradesh
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B)
Bihar
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C)
Punjab
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D)
Uttar Pradesh
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question_answer 394) Which one is the riches source of vegetarian protein?
A)
Gram
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B)
Soyabean
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C)
Wheat
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D)
Rice
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question_answer 395) Branch of Botany connected with study of food, fibre and wood yielding plant
A)
Ethnobotany
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B)
Palaeobotany
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C)
Economic botany
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D)
Microbiology
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question_answer 396) Which fibre crop occupies the maximum area in India?
A)
Jute
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B)
Cotton
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C)
Flax
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D)
Sisal
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question_answer 397) Botanical name of tea is
A)
Piper nigrum
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B)
Thea/Camellia sinensis
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C)
Coffea Arabica
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D)
Tectona grandis
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question_answer 398) Which can preserve food stuffs?
A)
Salt and sugar
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B)
Sugar and vinegar
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C)
Vinegar
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D)
All of these
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question_answer 399) Forest research institute is situated at
A)
Lucknow
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B)
Bhopal
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C)
Hyderabad
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D)
Dehradun
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question_answer 400) Humulin is
A)
antibiotic
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B)
insulin
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C)
haemoglobin
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D)
pepsin
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