The moment of inertia of a rod about an axis through its centre and perpendicular to it is \[\frac{1}{12}\,M{{L}^{2}}\] where M is the mass and L the length of the rod). The rod is bent in the middle so that the two halves make an angle of \[60{}^\circ \]. The moment of inertia of the bent rod about the same axis would be
A)
\[\frac{1}{48}\,\,M{{L}^{2}}\]
done
clear
B)
\[\frac{1}{12}\,\,M{{L}^{2}}\]
done
clear
C)
\[\frac{1}{24}\,\,M{{L}^{2}}\]
done
clear
D)
\[\frac{M{{L}^{2}}}{8\sqrt{3}}\,\,\]
done
clear
View Answer play_arrow
A boat at anchor is rocked by waves whose crests are 100 m apart and velocity is 25 m/s. The boat bounces up once in every
A)
2500 s
done
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B)
75 s
done
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C)
4 s
done
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D)
0.25 s
done
clear
View Answer play_arrow
By sucking through a straw, a student can reduce the pressure in his lungs to 750 mm of Hg (\[\operatorname{density} = 13.6 g/c{{m}^{3}}\]). Using the straw, he can drink water from a glass up to a maximum depth of
A)
10 cm
done
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B)
75 cm
done
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C)
13.6 cm
done
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D)
1.36 cm
done
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View Answer play_arrow
Two parallel large thin metal sheets have equal surface charge densities \[\left( \sigma = 26.4 \times 1{{0}^{-}}^{12}C/{{m}^{2}} \right)\]of opposite signs. The electric field between these sheets is
A)
\[1.5\text{ }N/C\]
done
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B)
\[1.5\,\,\times \,\,{{10}^{-10}}\,N/C\]
done
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C)
\[3\,N/C\]
done
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D)
\[3\,\,\times \,\,{{10}^{-10}}\,N/C\]
done
clear
View Answer play_arrow
A wire mesh consisting of very small squares is viewed at a distance of 8 cm through a magnifying converging lens of focal length 10 cm, kept close to the eye. The magnification produced by the lens is
A)
5
done
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B)
8
done
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C)
10
done
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D)
20
done
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View Answer play_arrow
Hard X-rays for the study of fractures in bones should have a minimum wavelength of\[{{10}^{-}}^{11}\,m\]. The accelerating voltage for electrons in X-ray machine should be
A)
\[<124\text{ }kV\]
done
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B)
\[>124\text{ }kV\]
done
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C)
between 60 kV and 70 Kv
done
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D)
\[= 100 kV\]
done
clear
View Answer play_arrow
A lens is made of flint glass\[\,(refractive\,\,index\,\,=\,\,\,1.5)\]. When the lens is immersed in a liquid of ?refractive index 1.25, the focal length
A)
increases by a factor of 1.25
done
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B)
increases by a factor of 2.5
done
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C)
increases by a factor of 1.2
done
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D)
decreases by a factor of 1.2
done
clear
View Answer play_arrow
The voltage of clouds is \[4 \times 1{{0}^{6}}V\] with respect to ground. In a lightning strike lasting 100 ms, a charge of 4 C is delivered to the ground. The power of lightning strike is
A)
160 MW
done
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B)
80 MW
done
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C)
20 MW
done
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D)
500 kW
done
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View Answer play_arrow
A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at distance of 2 m and 3 m respectively from the source. The ratio of the intensities of the waves at P and Q is
A)
\[9:4\]
done
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B)
\[2:3\]
done
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C)
\[3:2\]
done
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D)
\[4:9\]
done
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View Answer play_arrow
When a p-n junction diode is reverse biased, then
A)
no current flows
done
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B)
the depletion region is increased
done
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C)
the depletion region is reduced
done
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D)
the height of the potential barrier is reduced
done
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View Answer play_arrow
The circuit given below represents which of the logic operations?
A)
AND
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B)
NOT
done
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C)
OR
done
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D)
NOR
done
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View Answer play_arrow
The spatial distribution of the electric field due to charges (A, B) is shown in the figure. Which one of the following statements is correct?
A)
\[\operatorname{A}\,\,is +ve and\,\,B\,-\,ve and\,\,\left| A \right| > \left| B \right| \]
done
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B)
\[\operatorname{A}\,\,is -ve and\,\,B\,+\,ve;\,\,\left| A \right| = \left| B \right| \]
done
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C)
\[\operatorname{Both} are +ve but\,\,A > B\]
done
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D)
\[Both are -ve but\,\,A > B\]
done
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View Answer play_arrow
Circular loop of a wire and a long straight wire carry currents\[{{I}_{c}}\,and\,{{I}_{e}}\], respectively as shown in the figure. Assuming that these are placed in the same plane. The magnetic field will be zero at the centre of the loop when the separation H is Wire
A)
\[\frac{{{I}_{e}}R}{{{I}_{c}}\pi }\]
done
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B)
\[\frac{{{I}_{e}}R}{{{I}_{e}}\pi }\]
done
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C)
\[\frac{\pi {{I}_{c}}}{{{I}_{e}}R}\]
done
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D)
\[\frac{{{I}_{e}}\pi }{{{I}_{c}}R}\]
done
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View Answer play_arrow
If a street light of mass Mis suspended from the end of a uniform rod of length L in different possible patterns as shown in the figure, then
A)
pattern A is more sturdy
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B)
pattern B is more sturdy
done
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C)
pattern C is more sturdy
done
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D)
all will have the same sturdiness
done
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View Answer play_arrow
\[_{92}^{238}U\] has 92 protons and 238 nucleons. It decay by emitting an alpha particle and becomes
A)
\[_{92}^{234}U\]
done
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B)
\[_{90}^{234}Th\]
done
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C)
\[_{92}^{235}U\]
done
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D)
\[_{93}^{237}Np\]
done
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View Answer play_arrow
The fossil bone has a \[^{14}C{{:}^{12}}C\] ratio, which is \[\left[ \frac{1}{16} \right]\] of that in a living animal bone. If the half-life of \[^{14}C\] is 5730 years, then the age of the fossil bone is
A)
11460 years
done
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B)
17190 years
done
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C)
22920 years
done
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D)
45840 years
done
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View Answer play_arrow
Which one of the following is a possible nuclear reaction?
A)
\[_{5}^{10}B\,\,+\,_{2}^{4}He\,\,\xrightarrow{{}}\,\,_{7}^{13}N\,\,+\,\,_{1}^{1}H\]
done
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B)
\[_{11}^{23}Na\,\,+\,_{1}^{1}H\,\,\xrightarrow{{}}\,\,_{10}^{20}Ne\,\,+\,\,_{2}^{4}He\]
done
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C)
\[_{93}^{239}Np\,\,\xrightarrow{{}}\,\,_{94}^{239}Pu\,\,+\,\,{{\beta }^{-}}+\overline{\nu }\]
done
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D)
\[_{7}^{11}N\,\,+\,\,_{1}^{1}H\,\,\xrightarrow{{}}\,\,_{6}^{12}C\,\,+\,\,{{\beta }^{-}}+\nu \]
done
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View Answer play_arrow
Two tuning forks P and Q when set vibrating, give 4 beats/s. If a prong of the fork P is filed, the beats are reduced to 7.1s. What is frequency of P, if that of Q is 250 Hz?
A)
246 Hz
done
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B)
250 Hz
done
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C)
254 Hz
done
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D)
252 Hz
done
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View Answer play_arrow
A bimetallic strip consists of metals X and Y. It is mounted rigidly at the base as shown. The metal X has a higher coefficient of expansion compared to that for metal Y. When bimetallic strip is placed in a cold bath
A)
it will bend towards the right
done
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B)
it will bend towards the left
done
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C)
it will not bend but shrink
done
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D)
it will neither bend nor shrink
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View Answer play_arrow
A light emitting diode (LED) has a voltage drop of 2 V across it and passes a current of 10 mA. When it operates with a 6 V battery through a limiting resistor R. The value of R is
A)
\[40\,\,k\Omega \]
done
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B)
\[4\,\,k\Omega \]
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C)
\[200\,\,\Omega \]
done
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D)
\[400\,\,\Omega \]
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View Answer play_arrow
The minimum potential difference between the base and emitter required to switch a silicon transistor 'ON' is approximately
A)
1 V
done
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B)
3 V
done
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C)
5 V
done
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D)
4.2 V
done
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View Answer play_arrow
Given below is a circuit diagram of an AM demodulator.
For good demodulation of AM signal of carrier frequency f, the value of RC should be
A)
\[RC=\frac{1}{f}\]
done
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B)
\[RC<\frac{1}{f}\]
done
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C)
\[RC\ge \frac{1}{f}\]
done
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D)
\[RC>>\frac{1}{f}\]
done
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View Answer play_arrow
In CGS system the magnitude of the force is 100 dynes. In another system where the fundamental physical quantities are kilogram, metre and minute, the magnitude of the force is
A)
0.036
done
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B)
0.36
done
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C)
3.6
done
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D)
36
done
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View Answer play_arrow
A particle [A] is dropped from a height and another particle is thrown in horizontal direction with speed of 5 m/sec from the same height. The correct statement is
A)
Both particles will reach at ground simultaneously
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B)
Both particles will reach at ground with the same speed
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C)
Particle [A] will reach at ground first with respect to particle [B]
done
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D)
Particle (5) will reach at ground first with respect to particle [A]
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View Answer play_arrow
An aircraft executes a horizontal loop with a speed of 150 m/s with its, wings banked at an angle of \[12{}^\circ \]. The radius of the loop is \[(g= 10 m/{{s}^{2}})\]
A)
10.6 km
done
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B)
9.6 km
done
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C)
7.4 km
done
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D)
5.8 km
done
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View Answer play_arrow
A block of metal weighing 2 kg is resting on a frictionless plane. It is struck by a jet releasing water at a rate of 1 kg/sec and at a speed of 5 m/sec. The initial acceleration of the block will be
A)
\[2.5 m/se{{c}^{2}}\]
done
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B)
\[5.0 m/se{{c}^{2}}\]
done
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C)
\[10 m/se{{c}^{2}}\]
done
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D)
None of the above
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View Answer play_arrow
A car is moving along a straight horizontal road with a speed \[{{\nu }_{0}}\]. If the coefficient of friction between the tyres and the road is \[\mu \] the shortest distance in which the car can be stopped is
A)
\[\frac{{{\nu }_{0}}^{2}}{2\,\mu g}\]
done
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B)
\[\frac{{{\nu }_{0}}^{{}}}{\mu g}\]
done
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C)
\[{{\left( \frac{{{\nu }_{0}}^{{}}}{\mu g} \right)}^{2}}\]
done
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D)
\[\frac{{{\nu }_{0}}^{{}}}{\mu }\]
done
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View Answer play_arrow
A spring of force constant 10 N/m has an initial stretch 0.20 m. In changing the stretch to 0.25 m, the increase in potential energy is about
A)
0.1 joule
done
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B)
0.2 joule
done
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C)
0.3 joule
done
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D)
0.5 joule
done
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View Answer play_arrow
Mass Mis divided into two parts xM and\[(1 -x)M\] For a given separation, the value of x for which 0 the gravitational attraction between the two pieces becomes maximum is
A)
\[\frac{1}{2}\]
done
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B)
\[\frac{3}{5}\]
done
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C)
1
done
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D)
2
done
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View Answer play_arrow
Steel and copper wires of the same length are stretched by the same weight one after the other. Young?s modulus of steel and copper are\[2 \times 1{{0}^{11}}\,N/{{m}^{2}}\,and 1.2 \times 1{{0}^{11}}\,N/{{m}^{2}}\]. The ratio of increase in length
A)
\[\frac{2}{5}\]
done
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B)
\[\frac{3}{5}\]
done
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C)
\[\frac{5}{4}\]
done
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D)
\[\frac{5}{2}\]
done
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View Answer play_arrow
The force required to separate two glass plates of area \[{{10}^{-2}}\,{{m}^{2}}\] with a film of water 0.05 mm thick between them is (surface tension of water is \[70 \times 1{{0}^{-}}^{3}\,N/m\])
A)
28 N
done
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B)
14 N
done
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C)
50 N
done
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D)
38 N
done
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View Answer play_arrow
A body of density \[{{d}_{1}}\] is counterpoised by Mg of weights of density \[{{d}_{2}}\] in air of density d. Then the true mass of the body is
A)
M
done
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B)
\[M\left( 1-\frac{d}{{{d}_{2}}} \right)\]
done
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C)
\[M\left( 1-\frac{d}{{{d}_{1}}} \right)\]
done
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D)
\[\frac{M(1-d/{{d}_{2}})}{(1-d/{{d}_{1}})}\]
done
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View Answer play_arrow
A uniform metal rod is used as a bar pendulum. If the room temperature rises by \[10{}^\circ C\], and the coefficient of linear expansion of the metal of the rod is \[2 \times 1{{0}^{-}}^{6}per {}^\circ C\], the period of the pendulum will have percentage increase of
A)
\[-2 \times 1{{0}^{-3}}\]
done
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B)
\[-1 \times 1{{0}^{-3}}\]
done
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C)
\[2 \times 1{{0}^{-3}}\]
done
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D)
\[1 \times 1{{0}^{-3}}\]
done
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View Answer play_arrow
Suppose ideal gas equation follows\[{{\operatorname{VP}}^{3}}=constant\]. Initial temperature and volume of the gas are T and V respectively. If gas expand to 27 V, then its temperature will become
A)
T
done
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B)
9T
done
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C)
27F
done
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D)
T/9
done
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View Answer play_arrow
If \[\Delta Q\,\,and\,\,\Delta W\] represent the heat supplied to the system and the work done on the system respectively, then the first law of thermodynamics can be written as
A)
\[\Delta Q=\Delta U+\Delta W\]
done
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B)
\[\Delta Q=\Delta U-\Delta W\]
done
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C)
\[\Delta Q=\Delta W-\Delta U\]
done
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D)
\[\Delta Q=-\Delta W-\Delta U\] where \[\Delta U\] is the internal energy
done
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View Answer play_arrow
The thermal conductivity of a material in CGS system is 0.4. In steady state, the rate of flow of heat \[10\,\,cal/sec-c{{m}^{2}}\], then the thermal gradient will be
A)
\[10{}^\circ C/cm\]
done
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B)
\[12{}^\circ C/cm\]
done
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C)
\[25{}^\circ C/cm\]
done
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D)
\[20{}^\circ C/cm\]
done
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View Answer play_arrow
The amplitude and the time period in a SHM is 0.5 cm and 0.4 sec respectively. If the initial phase is Till radian, then the equation of SHM will be
A)
\[\operatorname{y}=0.5 \,sin\,\,5\pi t\]
done
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B)
\[\operatorname{y}=0.5 \,sin\,\,4\pi t\]
done
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C)
\[\operatorname{y}=0.5 \,sin\,\,2.5\,\pi t\]
done
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D)
\[\operatorname{y}=0.5 \,\cos \,\,5\pi t\]
done
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View Answer play_arrow
In a sinusoidal wave, the time required for particular point to move from maximum displacement to zero displacement is 0.170 second. The frequency of the wave;
A)
1.47 Hz
done
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B)
0.36 Hz
done
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C)
0.73 Hz
done
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D)
2.94 Hz
done
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View Answer play_arrow
Three rings each of mass M and radius R are arranged as shown in the figure. The moment of inertia of the system about YY? will be
A)
\[3\,\,M{{R}^{2}}\]
done
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B)
\[\frac{3}{2}\,\,M{{R}^{2}}\]
done
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C)
\[5\,\,M{{R}^{2}}\]
done
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D)
\[\frac{7}{2}\,\,M{{R}^{2}}\]
done
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View Answer play_arrow
The capacity and the energy stored in a parallel plate condenser with air between its plates are respectively\[{{\operatorname{C}}_{o}}\,\,and\,\,{{W}_{o}}\]. If the air is replaced by glass \[\left( dielectric constant = 5 \right)\] between the plates, the capacity of the plates and the energy stored in it will respectively be
A)
\[5{{C}_{o}},\,\,5{{W}_{o}}\]
done
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B)
\[5{{C}_{o}},\,\,\frac{{{W}_{o}}}{5}\]
done
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C)
\[\frac{{{C}_{o}}}{5},\,\,5{{W}_{o}}\]
done
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D)
\[\frac{{{C}_{o}}}{5},\,\,\frac{{{W}_{o}}}{5}\]
done
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View Answer play_arrow
A body of mass 5 gm is executing SHM about a point with amplitude 10 cm. Its maximum velocity is 100 cm/sec. Its velocity will be 50 cm/sec at a distance
A)
5
done
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B)
\[5\sqrt{2}\]
done
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C)
\[5\sqrt{3}\]
done
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D)
\[10\sqrt{2}\]
done
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View Answer play_arrow
At which temperature the speed of sound in hydrogen will be the same as that of speed of sound in oxygen at \[100{}^\circ C\]
A)
\[-148{}^\circ C\]
done
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B)
\[-212.5{}^\circ C\]
done
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C)
\[-317.5{}^\circ C\]
done
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D)
\[-249.7{}^\circ C\]
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View Answer play_arrow
If the initial velocity of a projectile be doubled, keeping the angle of projection same, the maximum height reached by it will
A)
Remain the same
done
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B)
Redoubled
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C)
Be quadrupled
done
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D)
Be halved
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View Answer play_arrow
Force acting upon a charged particle kept between the plates of a charged condenser is F. If one plate of the condenser is removed, then the force acting on the same particle will become
A)
0
done
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B)
F/2
done
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C)
F
done
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D)
2F
done
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View Answer play_arrow
Masses of three wires of copper are in the ratio of \[1 : 3 : 5\] and their lengths are in the ratio of\[5:3:1\]. The ratio of their electrical resistances are
A)
\[1:3:5~\]
done
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B)
\[5:3: 1\]
done
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C)
\[1:15:125~\]
done
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D)
\[125:15:1\]
done
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View Answer play_arrow
Vapour pressure of a solution of 5 g of non- electrolyte in 100 g of water at a particular temperature is\[2985 N/{{m}^{2}}\]. The vapour pressure of pure water is\[3000 N/{{m}^{2}}\]. The molecular weight of the solute is
A)
60
done
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B)
120
done
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C)
180
done
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D)
380
done
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View Answer play_arrow
When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate ? electrodes are
A)
Pure zinc Pure copper
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B)
Impure sample Pure copper
done
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C)
Impure zinc Impure sample
done
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D)
Pure copper Impure sample
done
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View Answer play_arrow
The osmotic pressure at \[17{}^\circ C\] of an aqueous solution containing 1.75 g of sucrose per 150 ml solution is
A)
0.8 atm
done
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B)
0.08 atm
done
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C)
8.1 atm
done
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D)
9.1 atm
done
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View Answer play_arrow
In the electrolytic cell, flow of electrons is from
A)
Cathode to anode in solution
done
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B)
Cathode to anode through external supply
done
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C)
Cathode to anode through internal supply
done
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D)
Anode to cathode through internal supply
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View Answer play_arrow
Xenon crystallizes in face centre cubic lattice and the edge of the unit cell is 620 pm, then the radius of xenon atom is
A)
438. 5 pm
done
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B)
219.25 pm
done
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C)
536.94 pm
done
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D)
265.5 pm
done
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View Answer play_arrow
A solution of sodium sulphate in water is electrolysed using inert electrodes. The products at the cathode and anode are respectively
A)
\[{{H}_{2}},\,\,{{O}_{2}}\]
done
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B)
\[{{O}_{2}},\,\,{{H}_{2}}\]
done
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C)
\[{{O}_{2}},\,\,Na\]
done
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D)
\[{{O}_{2}},\,\,S{{O}_{2}}\]
done
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View Answer play_arrow
Which one of the following is an incorrect statement for physisorption?
A)
It is a reversible process
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B)
It requires less heat of adsorption
done
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C)
It requires activation energy
done
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D)
It takes place at low temperature
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View Answer play_arrow
If a second-order reaction involving a single reactant is \[25%\] complete in 20 minutes, then what is its half-life if initial concentration of the reactant is being made double at the same temperature.
A)
50 min
done
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B)
30 min
done
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C)
60 min
done
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D)
15 min
done
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View Answer play_arrow
The mass of unit cell of \[Ca{{F}_{2}}\] \[\left( fluorite structure \right)\] corresponds to
A)
\[\operatorname{mass}\,\,of\,\,8C{{a}^{++}}\,ions\,\,and\,\,4{{F}^{-}}\,ions\]
done
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B)
\[\operatorname{mass}\,\,of\,\,4C{{a}^{++}}\,ions\,\,and\,\,8{{F}^{-}}\,ions\]
done
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C)
\[\operatorname{mass}\,\,of\,\,4C{{a}^{++}}\,ions\,\,and\,\,4{{F}^{-}}\,ions\]
done
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D)
\[\operatorname{mass}\,\,of\,\,1C{{a}^{++}}\,ions\,\,and\,\,2{{F}^{-}}\,ions\]
done
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View Answer play_arrow
Which is not colloidal?
A)
Chlorophyll
done
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B)
Egg
done
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C)
Ruby glass
done
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D)
Milk
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View Answer play_arrow
Select similarity between alkali metals and coinage metals.
A)
Both are required to store in organic solvent
done
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B)
Both have high solubility in pure liquid ammonia to produce blue solution
done
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C)
Both can be extracted by aqueous salt electrolysis
done
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D)
Both have the same number of electron(s) in outermost shell
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View Answer play_arrow
The solubility of iodine in water increases in the presence of
A)
Alcohol
done
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B)
Chloroform
done
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C)
Sodium hydroxide
done
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D)
Potassium iodide
done
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View Answer play_arrow
Which of the reactions occurs in slag formation zone in the blast furnace for the manufacture of iron?
A)
\[{{\operatorname{Fe}}_{2}}{{O}_{3}} + 3C \to \, 2Fe +3CO\]
done
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B)
\[\operatorname{C}{{O}_{2}}_+\,\,C\,\,\to \,\,2CO\]
done
clear
C)
\[\operatorname{FeO} + Si{{O}_{2}}\,\,\to \,\,FeSi{{O}_{3}}\]
done
clear
D)
\[\operatorname{CaO} + Si{{O}_{2}}\,\,\to \,\,CaSi{{O}_{3}}\]
done
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View Answer play_arrow
HI cannot be prepared by the action of cone.\[{{H}_{2}}S{{O}_{\text{4}}}\] on KI because
A)
HI is stronger than \[{{H}_{2}}S{{O}_{\text{4}}}\]
done
clear
B)
HI is more volatile than \[{{H}_{2}}S{{O}_{\text{4}}}\]
done
clear
C)
\[{{H}_{2}}S{{O}_{\text{4}}}\] is an oxidising agent
done
clear
D)
\[{{H}_{2}}S{{O}_{\text{4}}}\] forms complex
done
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View Answer play_arrow
Which of the following ionic species will impart colour to an aqueous solution?
A)
\[T{{i}^{4+}}\]
done
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B)
\[C{{u}^{+}}\]
done
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C)
\[Zn2+\]
done
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D)
\[C{{r}^{3+}}\]
done
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View Answer play_arrow
\[{{\left[ Co\left( N{{H}_{3}} \right){_{4}}C{{l}_{2}} \right]}^{+}}\] exhibits
A)
Geometrical isomerism
done
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B)
Optical isomerism
done
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C)
Bonding isomerism
done
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D)
Ionisation isomerism
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View Answer play_arrow
The hybridization state of carbon atoms in the product formed by the reaction of ethyl chloride with aqueous potassium hydroxide is
A)
sp
done
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B)
\[s{{p}^{2}}\]
done
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C)
\[s{{p}^{3}}\]
done
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D)
\[s{{p}^{3}}d\]
done
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View Answer play_arrow
Zn and Hg belong to the same group, they differ in many of their properties. The property that is shared by both is
A)
They form oxide readily
done
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B)
They react with steam readily
done
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C)
They react with hot concentrated sulphuric acid
done
clear
D)
They react with hot sodium hydroxide
done
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View Answer play_arrow
Which of the following compounds does not undergo nucleophilic substitution reactions?
A)
Vinyl chloride
done
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B)
Ethyl bromide
done
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C)
Benzyl chloride
done
clear
D)
Isopropyl chloride
done
clear
View Answer play_arrow
Coordination number of Fe in the complexes \[{{\left[ Fe{{(CN)}_{6}} \right]}^{4-}},\,\,{{\left[ Fe{{(CN)}_{6}} \right]}^{3-}}\,\,and\,\,{{\left[ FeC{{N}_{4}} \right]}^{-}}\] would be respectively
A)
2, 3, 3
done
clear
B)
6, 6, 4
done
clear
C)
6, 3, 3
done
clear
D)
6, 4, 6
done
clear
View Answer play_arrow
\[B(mix)\,\xleftarrow[2]{conc.\,HI}{{\left( C{{H}_{3}} \right)}_{3}}C-O-C{{H}_{3}}\] \[\xrightarrow[I]{anhydrous\,\,HI}\,\,A\,\,(mix)\]
A)
A and B are identical mixture of \[C{{H}_{3}}I\] and \[{{\left( C{{H}_{3}} \right)}_{3}}C-OH\]
done
clear
B)
A and B are identical mixture of \[C{{H}_{3}}OH\] and \[{{\left( C{{H}_{3}} \right)}_{3}}C-I\]
done
clear
C)
A is mixture of \[C{{H}_{3}}I\] and \[{{\left( C{{H}_{3}} \right)}_{3}}C-OH\] B is a mixture of \[C{{H}_{3}}OH\,\,and\,\,{{\left( C{{H}_{3}} \right)}_{3}}C-I\]
done
clear
D)
none
done
clear
View Answer play_arrow
The major product of the reaction is:
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
Which of the following cannot react with \[HN{{O}_{2}}\]?
A)
\[{{\operatorname{CH}}_{3}}CON{{H}_{2}}\]
done
clear
B)
\[{{\left( C{{H}_{3}} \right)}_{3}}CN{{O}_{2}}\]
done
clear
C)
\[{{\left( C{{H}_{3}}C{{H}_{2}} \right)}_{2}}NH\]
done
clear
D)
\[C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}\]
done
clear
View Answer play_arrow
Phenol is less acidic than
A)
ethanol
done
clear
B)
methanol
done
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C)
o-nitrophenol
done
clear
D)
\[p-cresol\]
done
clear
View Answer play_arrow
\[C{{H}_{3}}C{{H}_{2}}Br\xrightarrow{AgCN}\,A\,\,\xrightarrow[H_{3}^{\oplus }O]{NaOH,\,\,\Delta }B;\,\,(B)\] is.?
A)
\[C{{H}_{3}}C{{H}_{2}}NHC{{H}_{3}}\]
done
clear
B)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}N{{H}_{2}}\]
done
clear
C)
\[C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}\]
done
clear
D)
done
clear
View Answer play_arrow
Which H atom in the following ester is most acidic?
A)
1
done
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B)
2
done
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C)
3
done
clear
D)
4
done
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View Answer play_arrow
High density polyethylene (HDPE) can be prepared from ethylene by
A)
Ziegler-Natta process
done
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B)
Heating with peroxides
done
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C)
Condensing in sealed tubes
done
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D)
Condensing with styrenes
done
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View Answer play_arrow
Which of the following forms cationic micelles above certain concentration?
A)
Sodium dodecyl sulphate
done
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B)
Sodium acetate
done
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C)
Urea
done
clear
D)
Cetyltrimethyl ammonium bromide
done
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View Answer play_arrow
Which of the following statements is not correct?
A)
Amylopectin is water insoluble compound
done
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B)
Amylopectin is a linear polymer of glucose
done
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C)
Cellulose is not digested by man
done
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D)
Grazing animals can digest cellulose
done
clear
View Answer play_arrow
No. of oxalic acid molecules in 100 ml of 0.02 N oxalic acid are
A)
\[6.023 \times 1{{0}^{20}}\]
done
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B)
\[6.023 \times 1{{0}^{21}}\]
done
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C)
\[6.023 \times 1{{0}^{22}}\]
done
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D)
\[6.023 \times 1{{0}^{23}}\]
done
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View Answer play_arrow
In which of the following arrangements the order is NOT according to the property indicated against it?
A)
\[A{{l}^{3+}}<M{{g}^{2+}}\,N{{a}^{+}}<{{F}^{-}}\]: Increasing ionic size
done
clear
B)
\[\operatorname{B} < C < N < O\]: Increasing first ionization enthalpy
done
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C)
\[\operatorname{I}< Br < F < Cl\]: Increasing electron gain enthalpy (with negative sign)
done
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D)
\[\operatorname{Li} < Na < K < Rb\]: Increasing metallic radius
done
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View Answer play_arrow
The energy of the electron in the first orbit of, \[H{{e}^{+}}\] is\[-871.6 \times 1{{0}^{-}}^{20}J\]. The energy of the electron in the first orbit of hydrogen would be
A)
\[-871.6\times 1{{0}^{-}}^{20}\,J\]
done
clear
B)
\[-435.8\times 1{{0}^{-}}^{20}\,J\]
done
clear
C)
\[-217.9\times 1{{0}^{-}}^{20}\,J\]
done
clear
D)
\[-108.9\times 1{{0}^{-}}^{20}\,J\]
done
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View Answer play_arrow
Arrange the following in the order of increasing mass.
(i) \[3.0115 \times 1{{0}^{23}}\] molecules of white phosphorus (ii) 10 moles of \[{{H}_{2}}\] gas (iii) 1 g molecule of anhydrous \[N{{a}_{2}}C{{O}_{3}}\] (iv) 33.6 L of \[C{{O}_{2}}\] gas at S.T.P.
A)
\[\left( ii \right)<\left( i \right)<\left( iv \right)<\left( iii \right)\]
done
clear
B)
\[\left( iii \right)>\left( iv \right)>\left( i \right)>\left( ii \right)\]
done
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C)
\[\left( i \right)<\left( ii \right)<\left( iv \right)<\left( iii \right)\]
done
clear
D)
\[\left( i \right)<\left( iv \right)<\left( iii \right)<\left( ii \right)\]
done
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View Answer play_arrow
Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?
A)
\[\operatorname{Cl} < F < S < O\]
done
clear
B)
\[O < S < F < Cl\]
done
clear
C)
\[\operatorname{S} < O < Cl < F\]
done
clear
D)
\[\operatorname{D} < Cl < O < S\]
done
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View Answer play_arrow
The total number of valence electrons in 4.2 g of \[N_{3}^{-}\] ion is \[({{N}_{A}}\,is\,\,the\,\,Avogadro's\,\,number)\]
A)
\[1.6\,\,{{N}_{A}}\]
done
clear
B)
3.2
done
clear
C)
\[2.1\,\,{{N}_{A}}\]
done
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D)
4.2
done
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View Answer play_arrow
Which of the following resonating structures of \[{{N}_{2}}O\] is the most contributing?
A)
\[N\equiv NO\]
done
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B)
\[N\,N\equiv O\]
done
clear
C)
\[N=\,NO\]
done
clear
D)
\[N\,N=O\]
done
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View Answer play_arrow
At \[100{}^\circ C\] and 1 atm, if the density of liquid water is 1.0 g/cc and that of water vapour is 0.0006 g/cc, then the volume occupied by water molecule in 1 litre of steam at that temperature is
A)
6 cc
done
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B)
60 cc
done
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C)
0.6 cc
done
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D)
0.06 cc
done
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View Answer play_arrow
The circulation of blood in human body supplies \[{{O}_{2}}\] and releases \[C{{O}_{2}}\]. The concentration of \[{{O}_{2}}\] and \[C{{O}_{2}}\] is variable but on an average, 100 ml blood contains 0.02 g of \[{{O}_{2}}\] and 0.08 g of \[C{{O}_{2}}\]. The volume of \[{{O}_{2}}\] and \[C{{O}_{2}}\] at 1 atm and at body temperature\[37{}^\circ C\], assuming 10 L blood in human body, is
A)
2 L, 4 L
done
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B)
1.5 L, 4.5 L
done
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C)
1.59 L, 4.62 L
done
clear
D)
3.82 L, 4.62 L
done
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View Answer play_arrow
The order of dipole moments of the following molecules is
A)
\[\operatorname{CHC}{{l}_{3}}>C{{H}_{2}}C{{l}_{2}}>C{{H}_{3}}Cl>CC{{l}_{4}}\]
done
clear
B)
\[{{\operatorname{CH}}_{2}}C{{l}_{2}}>C{{H}_{3}}Cl>CHC{{l}_{3}},>CC{{l}_{4}}\]
done
clear
C)
\[{{\operatorname{CH}}_{3}}Cl>C{{H}_{2}}C{{l}_{2}}>CHC{{l}_{3}}>CC{{l}_{4}}\]
done
clear
D)
\[{{\operatorname{CH}}_{2}}C{{l}_{2}}>CHC{{l}_{3}}>C{{H}_{3}}Cl>CC{{l}_{4}}\]
done
clear
View Answer play_arrow
Calculate the maximum efficiency of an engine operating between \[110{}^\circ C and 25{}^\circ C\]
A)
\[11.1%\]
done
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B)
\[22.2%\]
done
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C)
\[33.3\,%\]
done
clear
D)
\[44.4\,%\]
done
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View Answer play_arrow
For the chemical equilibrium, \[CaCO(s)\,\,\rightleftharpoons \,\,CaO(s)+C{{O}_{2}}\,(g)\] \[\Delta H_{r}^{o}\] can be determined from which one of the following plots.
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
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View Answer play_arrow
At \[0{}^\circ C\], ice and water are in equilibrium and \[\Delta S\]and \[\Delta G\] for the conversion of ice to liquid water is
A)
\[0,\,\,21.98\,\,J{{K}^{-1}}\,mol{{e}^{-1}}\]
done
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B)
-ve, zero
done
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C)
\[+ve,\,\,21.98\,\,J{{K}^{-1}}\,mol{{e}^{-1}}\]
done
clear
D)
Zero, zero
done
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View Answer play_arrow
If the equilibrium constant of the reaction \[2HI\rightleftharpoons {{H}_{2}}+{{I}_{2}}\] is 0.25, then the equilibrium constant of the reaction \[{{H}_{2}}+{{I}_{2}}\rightleftharpoons 2HI\] would be
A)
1.0
done
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B)
2.0
done
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C)
3.0
done
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D)
4.0
done
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View Answer play_arrow
Complete oxidation of organic substances in the presence of oxygen
A)
is most common in higher organisms
done
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B)
produces alcohol, \[C{{O}_{2}}\] and energy
done
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C)
releases \[C{{O}_{2}}\], water and small amount of energy
done
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D)
produces lactic acid and large amount of energy
done
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View Answer play_arrow
When the electrons pass from NADH to oxygen via A in the mitochondrial ETC, they are coupled to B for the production of ATP from ADP and inorganic phosphate.
A)
A - Complex I to V B- ATP synthase
done
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B)
A - Complex V B - Complex I to IV,
done
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C)
A - Complex I to IV B - ATP synthase
done
clear
D)
A - Complex I to III B-Complex IV and V
done
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View Answer play_arrow
From tips of coleoptiles of oat seedlings, F.W. Went isolated
A)
Cytokinin
done
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B)
An intercellular factor
done
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C)
Gibberellic acid
done
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D)
An intracellular factor
done
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View Answer play_arrow
Examine the figure given below and select the right option giving both of the parts (A and B) correctly identified
A)
A - Action spectrum B - Absorption spectrum of chl-a
done
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B)
A - Absorption spectrum of \[\beta -carotene\] B - Action spectrum
done
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C)
A - Action spectrum B - Absorption spectrum of \[\beta -carotene\]
Wavelength of light in manometers (nm)
done
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D)
A - Absorption spectrum of chl-a B - Action spectrum
done
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View Answer play_arrow
Nucleolus disappears and the nuclear envelope breaks down by the end of A - Diakinesis B - Prophase-II C - Telophase D - Pachytene
A)
Only A
done
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B)
A, B
done
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C)
Only B
done
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D)
C, D
done
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View Answer play_arrow
Evolution of C4 photosynthetic system is one of the strategies for
A)
maximising water loss as well as availability of \[C{{O}_{2}}\]
done
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B)
minimising availability of \[C{{O}_{2}}\] while maximizing water loss
done
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C)
minimising water loss as well as availability of \[C{{O}_{2}}\]
done
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D)
maximising availability of \[C{{O}_{2}}\] while minimizing water loss
done
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View Answer play_arrow
Read the following statement having two blanks (A and B) ?In the case of \[\underline{A}\] the \[{{F}_{1}}\], generation resembles both parents but in \[\underline{B}\] the \[{{F}_{1}}\] resembled either of the two parents.? The one correct option for the two blanks is
A)
A - Dominance; B - Incomplete dominance
done
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B)
A - Incomplete dominance; B -Co-dominance
done
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C)
A - Co-dominance; B - Dominance
done
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D)
A - Co-dominance; B - Incomplete dominance
done
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View Answer play_arrow
Heterogamety is shown by
A)
Male grasshopper
done
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B)
Female chicks
done
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C)
Female fruit fly
done
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D)
Both [a] and [b]
done
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View Answer play_arrow
Which of the following disease shows its transmission from unaffected carrier female to some of the male progeny?
A)
Haemophilia
done
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B)
Myotonic dystrophy
done
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C)
Turner's syndrome
done
clear
D)
Down's syndrome
done
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View Answer play_arrow
How many of the following organisms are chemosynthetic autotrophs?
I. Nostoc II. Lactobacillus III. Vibrio IV. Nitrobacter
A)
Three
done
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B)
Four
done
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C)
Two
done
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D)
One
done
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View Answer play_arrow
In plants, symptoms like mosaic formation, leaf rolling and vein clearing are produced by
A)
Bacteria
done
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B)
Nucleoprotein particles
done
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C)
Prions
done
clear
D)
Nematodes
done
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View Answer play_arrow
Ascospores, sporangiospores and basidiospores all the three are
A)
produced in sexual reproduction
done
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B)
produced during reproduction in fungi
done
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C)
produced in asexual reproduction
done
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D)
produced after gametic meiosis
done
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View Answer play_arrow
In which of the following part(s) of sunflower, vascular cambium is completely secondary in origin?
A)
Root, stem
done
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B)
Flower, leaf
done
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C)
Root
done
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D)
Leaf, stem
done
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View Answer play_arrow
Underground stems of Colocasia and ginger are modified to perform
A)
Photosynthesis
done
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B)
Storage and perennation
done
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C)
Respiration and absorption of water
done
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D)
Conduction of water and minerals
done
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View Answer play_arrow
Axonemal microtubules are arranged as \[9 + 2\]array in the cilia or flagella of
A)
Agaricus and morels
done
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B)
\[{{T}_{2}}\] phage and Vibrio
done
clear
C)
Paramoecium and Euglena
done
clear
D)
Porphyra and Polysiphonia
done
clear
View Answer play_arrow
Mark the mismatched pair
A)
Medicine - Aloe, muliathi
done
clear
B)
Edible oil - Soyabean, groundnut
done
clear
C)
Ornamentals - Lupin, Petunia
done
clear
D)
Dyes - Sesbania, Trifolium
done
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View Answer play_arrow
Plants with great ecological importance but little economic importance belong to
A)
Bryophytes
done
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B)
Pteridophytes
done
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C)
Gymnosperms
done
clear
D)
Algae
done
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View Answer play_arrow
Mark the wrongly matched pair
A)
Yeast-Budding
done
clear
B)
Date palm - Dioecious plant
done
clear
C)
Agave-Bulbil
done
clear
D)
Strobilanthes - External fertilisation
done
clear
View Answer play_arrow
Flowers are not very colourful and do not produce nectar in
A. entomophily B. anemophily C. hydrophily D. omithophily
A)
B, C
done
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B)
A, B
done
clear
C)
C, D
done
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D)
A, D
done
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View Answer play_arrow
Which one of the following statements is true in respect of post fertilisation structures and events?
A)
Perisperm is residual and persistent endosperm in seed
done
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B)
Zygote gives rise to the proembryo and subsequently to the heart-shaped, globular and mature embryo in dicots
done
clear
C)
In monocots hypocotyl has a shoot apex and few leaf primordia enclosed in a hollow foliar structure
done
clear
D)
Transformation of ovules into seed and ovary into fruit proceeds simultaneously
done
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View Answer play_arrow
Find out the hybrid varieties of crop plants which have been developed in India
A. TN-1 B. HD 1553 C. IR-8 D. P 1542
A)
B, C, D
done
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B)
B, D
done
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C)
A, B, D
done
clear
D)
A, C
done
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View Answer play_arrow
Which one of the following is mismatched pair?
A)
Biomagnification - DDT in aquatic food chain
done
clear
B)
Integrated organic farming- Cyclical zero waste procedure
done
clear
C)
Sanitary landfills - Solid wastes
done
clear
D)
Waste water - Use of phenyl
done
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View Answer play_arrow
There are several ways of removing particulate matter; the most widely used of which is
A)
Catalytic converter
done
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B)
ESP
done
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C)
Bag filters
done
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D)
Scrubber
done
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View Answer play_arrow
The historic convention on Biological Diversity held in
A)
Rio de Janeiro, 2002
done
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B)
Brazil, 1992
done
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C)
South Africa, 2002
done
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D)
Johannesburg, 1992
done
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View Answer play_arrow
Large quantity of protein-rich food within a short duration is possible by growing
A)
Sequoia
done
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B)
Spirulina
done
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C)
Toadstool
done
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D)
Triticum
done
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View Answer play_arrow
The dough, which is used for making bread and idli, is fermented by
A)
Heterotrophic microbes
done
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B)
Bacteria and fungi respectively
done
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C)
Autotrophic microbes
done
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D)
Fungi and BGA respectively
done
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View Answer play_arrow
Find the correct one (w.r.t. defining features of all life forms)
A)
Cellular organization
done
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B)
Extrinsic growth
done
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C)
Reproduction
done
clear
D)
Both [a] and [b]
done
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View Answer play_arrow
Which of the following pair is wrongly matched?
A)
Ethephon - Fruit ripening in apples
done
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B)
Bakanae disease of rice seedlings - BAP
done
clear
C)
Vernalisation - Chilling treatment
done
clear
D)
NAA - Synthetic auxin
done
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View Answer play_arrow
Reserve food is very similar to amylopectin and glycogen in structure in
A)
Dictyota, Fucus
done
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B)
Polysiphonia, Porphyra
done
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C)
Volvox, Cladophora
done
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D)
Euglena, Ulothrix
done
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View Answer play_arrow
Pinnate leaves persist for a few years in a gymnosperm with
A)
Sunken stomata
done
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B)
Branched stem
done
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C)
Coralloid roots
done
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D)
Fungal roots
done
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View Answer play_arrow
deATP, deCTP, deGTP and deTTP serve as
A)
Source of energy for polymerisation of amino acids
done
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B)
Substrates in replication of DNA
done
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C)
Source of energy for transcription
done
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D)
Both [a] and [b]
done
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View Answer play_arrow
If the sequence of the coding strand in a transcription unit is written as follows
\[5'-TGAACTGTAGCATGC-3'\]. Find out the correct sequence in m RNA.
A)
\[5'-UGAACUGUAGCUUGC-{3}'\]
done
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B)
\[3'-CGUACGAUGACAAGU-5'\]
done
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C)
\[3'-CGUACGAUGUCAAGU-5'\]
done
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D)
\[5'-UGACUGUAGCUUGC-3\]
done
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View Answer play_arrow
Find out the biomolecule having structural specialties to read the genetic code.
A)
Amino acids
done
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B)
mRNA
done
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C)
Adapter molecule
done
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D)
Peptidyl transferase
done
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View Answer play_arrow
Both RuBisCO and PEPcase are found in the leaves of
A)
\[{{C}_{3}}\] plants
done
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B)
All photosynthetic plants
done
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C)
Dry tropical regions
done
clear
D)
More than one option is correct
done
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View Answer play_arrow
Pseudomonas and Thiobacillus perform the
A)
Reduction of nitrate in soil
done
clear
B)
Denitrification and ammonification respectively
done
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C)
Oxidation of ammonia in soil
done
clear
D)
Nitrogen fixation and nitrification respectively
done
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View Answer play_arrow
Read the following statements
A. Cytoskeleton is involved in mechanical support and motility of the bacterial cell. B. In plants cells, centrioles form spindle apparatus during cell division.
A)
Both A and B are incorrect
done
clear
B)
Only A is correct
done
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C)
Only B is correct
done
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D)
Both A and B are correct
done
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View Answer play_arrow
Mature or ripened ovary of mango and coconut resemble in the presence of
A)
Double endosperm
done
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B)
Scutellum
done
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C)
Stony hard endocarp
done
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D)
Undifferentiated pericarp
done
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View Answer play_arrow
Permanent tissues having all cells similar in structure and function is
A)
Collenchyma, sclerenchyma
done
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B)
Xylem, phloem
done
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C)
Parenchyma, xylem
done
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D)
Phloem, collenchyma
done
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View Answer play_arrow
Which one of the following is an incorrect statement?
A)
Root of Pinus establishes an obligate association with fungi
done
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B)
Translocation in phloem is explained by the pressure flow hypothesis
done
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C)
Ions are absorbed from the soil mainly by active transport
done
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D)
More the solute molecules in the solution, the higher is the osmotic potential
done
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View Answer play_arrow
The stage between meiosis I and meiosis II is
A)
Called as interkinesis
done
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B)
Generally short-lived
done
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C)
Followed by prophase II
done
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D)
More than one option
done
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View Answer play_arrow
Environmental plasticity is found in
A)
Cotton
done
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B)
Buttercup
done
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C)
Larkspur
done
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D)
Coriander
done
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View Answer play_arrow
Anther wall layer meant for synthesis of sporopollenin and incompatibility proteins is
A)
Endothecium
done
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B)
Middle layers
done
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C)
Tapetum
done
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D)
Tapetum and middle layers
done
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View Answer play_arrow
Among plants, maximum species global diversity belong to a taxon known as
A)
Algae
done
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B)
Angiosperms
done
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C)
Mosses
done
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D)
Lichens
done
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View Answer play_arrow
Pyramid of energy in a forest ecosystem considering GFC is
A)
Spindle shaped
done
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B)
Inverted
done
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C)
Upright
done
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D)
Urn shaped
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View Answer play_arrow
Read the following statements
A. A considerable amount of NPP is utilized by plants in respiration. B. Trees occupy top vertical strata of a forest, herbs and grasses the second and shrubs occupy the bottom layers.
A)
Both A and B are correct
done
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B)
Only A is correct
done
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C)
Only B is correct
done
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D)
Both A and B are incorrect
done
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View Answer play_arrow
How many of the given statements are wrong?
A. The rate of diffusion of gas at the respiratory membrane depends upon its solubility as well as on the thickness of membrane. B. The amount of \[C{{O}_{2}}\] that can diffuse through the diffusion membrane per unit difference in partial pressure is much higher when compared to that of \[{{O}_{2}}\]. C. Oxygen can bind with haemoglobin in an irreversible manner to form oxyhaemoglobin. D. The factors responsible for formation of oxyhaemoglobin include high\[p{{O}_{2}}\], low \[pC{{O}_{2}}\], high \[{{H}^{+}}\] concentration and low temperature.
A)
One
done
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B)
Two
done
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C)
Three
done
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D)
Four
done
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Consider the following statements A-D with certain blanks and choose the option which correctly fills up these blanks.
A. A special neural centre in the (i) can moderate the cardiac function through autonomic nervous system. B. (ii) increase cardiac output. C. The ventricular systole starts shortly after (hi). D. The condition of erythroblastosis foetalis can be avoided by administering (iv) to the mother immediately after delivery of first child.
A)
(i) - Cerebrum (ii) - Sympathetic nerves (iii) - Q wave (iv) - Anti-Rh antibodies
done
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B)
(i) - Medulla Oblongata (ii) - Parasympathetic nerves (iii) - R wave (iv) - Rh-antibodies
done
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C)
(i) - Pons (ii) - Sympathetic nerves (iii) - Pwave (iv) - Rh-antibodies
done
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D)
(i) - Medulla Oblongata (ii) - Adrenal medullary hormones (iii) - Q wave (iv) - Anti-Rh antibodies
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Find out the incorrect statement w.r.t. generation conduction of nerve impulse.
A)
The resting axonal membrane is comparatively more permeable to potassium ions and nearly impermeable to sodium ions
done
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B)
In the resting membrane the outer surface of the axonal membrane possesses a positive charge while its inner surface is negatively charged and, therefore, is polarized
done
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C)
The membrane becomes depolarised due to rapid influx of \[N{{a}^{+}}\] on applying thresh old stimulus
done
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D)
Depolarisation is followed by repolarisation in which rapid efflux of \[N{{a}^{+}}\] takes place restoring the resting potential of the membrane at the site of excitation
done
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Following is a diagrammatic representation of endocrine glands with a labelled part 'A'. The part 'A' serves as the connection between
A)
Hypothalamus and adenohypophysis
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B)
Hypothalamus and neurohypophysis
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C)
Hypothalamus and pars nervosa
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D)
Hypothalamus and epiphysis
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All of the following are functions of catecholamines, except
A)
Pupilary dilation
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B)
Piloerection
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C)
Tachycardia
done
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D)
Lipogenesis
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Given below are four statements A-D w.r.t. mechanism of muscle contraction. Choose from the options stating them as true (T) and false (F)
[a] The action potential in the sarcolemma is generated by release of calcium ions in the sarcoplasm. [b] The globular head of meromyosin possesses ATPase enzyme activity which causes hydrolysis of ATP and the energy derived make myosin head bind to exposed active sites on actin. [c] Cross bridge formation is followed by pulling the attached myosin filaments towards the centre of ?I? band. [d] The breaking of cross bridge requires binding of new ATP at the myosin head. ABCD
A)
T T F T
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B)
F T F F
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C)
F T F T
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D)
T F F T
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Find out the correct labelling of bones A, B, C and D in the given figure
A)
A - Clavicle B - Humerus C - Ulna D - Radius
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B)
A - Clavicle B - Humerus C - Radius D - Ulna
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C)
A - Scapula B - Humerus C - Ulna D - Radius
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D)
A - Clavicle B - Femur C - Radius D - Ulna
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Following is a diagrammatic representation of a nephron showing blood vessels, duct and tubule. These structures have been labelled as A, B, C, etc. Answer the questions that follow.
(i) Which parts are located in cortical region of kidney? (ii) Which structure is highly reduced in cortical nephrons? (iii) Identify the part F. (iv) Which parts collectively form Malpighian body?
A)
(i) A, C, D, E (ii) B (iii) Collecting duct A and C
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B)
(i) A, C, D, E (ii) B (iii) Vasa recta (iv) A and C
done
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C)
(i) B, F, G, H (ii) F (iii) Vasa recta (iv) A and D
done
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D)
(i) B, F, G, H (ii) F (iii) Collecting duct (iv) C and D
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Which of the following statement is incorrect?
A)
Juxta glomerular apparatus is a special sensitive region formed by cellular modifications in the distal convoluted tubule and the afferent arteriole at the location of their contact
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B)
Nearly 99 percent of the filtrate gets reabsorbed by the renal tubules
done
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C)
Nitrogenous wastes in the filtrate get reabsorbed through active transport
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D)
Human kidneys can produce urine nearly four times concentrated than the initial filtrate formed
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All of the following digestive enzymes are secreted as pro-enzymes, except
A)
Pepsin
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B)
Trypsin
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C)
Carboxypeptidase
done
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D)
Sucrase
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Which of the following statements are correct?
A. The chemical process of digestion is initiated in oral cavity by the hydrolytic action of the carbohydrate splitting enzyme, the salivary amylase. B. Lipases are absent in secretion of gastric glands. C. Bile helps in emulsification of fats and also activates lipases. D. Nucleases in the succus entericus acts on nucleic acids to form nucleotides and nucleosides.
A)
A, B, C
done
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B)
A, C
done
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C)
C, D
done
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D)
A, C, D
done
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Given figure represents a type of connective tissue with certain labelled structures A, B, C and D
Which of the following option correctly defines the labelled structure?
A)
A - Mast cell - Secretes histamine, heparin and serotonin
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B)
B - Fibroblast - Secrete major amount of matrix
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C)
C - Elastic fibres - Provides tissue tensile strength
done
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D)
D - Macrophage - Engulf germ particle
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Given below is a diagram of muscular tissue. Find the correct description of this tissue w.r.t. its type and location
A)
Striated and voluntary - Found closely attached to skeletal bones
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B)
Non-striated and involuntary - Present only in heart
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C)
Non-striated and involuntary - Present in wall of blood vessels, stomach and intestine
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D)
Non-striated and voluntary - Present in urinary bladder and uterus
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Which of the phylum is a correct match w.r.t. phylum and its three examples?
A)
Mollusca - Pinctada, Loligo, Cucumaria
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B)
Annelida - Pheretima, Hirudinaria, Ctenoplana
done
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C)
Arthropoda-Laccifer Limulus, Chaetopleura\
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D)
Cnidaria - Pennatula, Meandrina, Aurelia
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Given below are diagrams of four animals A, B, C and D. Find the correct option w.r.t. common features of two of these animals.
A)
A and C are monoecious animals
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B)
A and B are bilaterally symmetrical
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C)
C and D are eucoelomates
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D)
B and D respire through gills
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Which of the following animal is correctly matched with its genus and two of its characteristics?
A)
Animal: Genus: Scoliodon Key: [a] Placoid scales on skin Characteristics: [b] Air bladder present
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B)
Animal: Genus: Bufo Key: [a] Body divisible into head and trunk [b] Cloaca absent
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C)
Animal: Genus: Chelone Key: [a] Epidermal scales present [b] Heart Myogenic
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D)
Animal: Genus: Struthio Key: [a] Skin is dry without glands [b] Fertilisation external
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Which of these animals shown are oviparous and viviparous?
Oviparous Viviparous
A)
A, B, D C
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B)
A, B, C, D
done
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C)
B, D, A, C
done
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D)
A, B, C D
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Which of the following statement is incorrect w.r.t. alimentary canal of cockroach?
A)
Oesophagus leads into a sac like structure called crop used for storing of food
done
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B)
Gizzard has an outer layer of thick circular muscles and thick inner cuticle forming six highly chitinous plate called teeth
done
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C)
A ring of 6-8 blind tubules called hepatic or gastric caeca is present at the junction of foregut and midgut
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D)
The hindgut is narrower than midgut and is differentiated into ileum, colon and rectum
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Consider the following features:
A. Exclusively marine, radially symmetrical, diploblastic organisms with tissue level of organisation. B. The body bears eight external rows of ciliary comb plates C. Digestion is both extracellular and intra- cellular D. Exhibit bioluminescence E. Monoecious, fertilisation external with indirect development The above-mentioned features belong to the animal
A)
Physalia
done
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B)
Euspongia
done
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C)
Fasciola
done
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D)
Pleurobrachia
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Match the following structures of cockroach in column I with their location provided in column II.
Column I Column II a. Testes in males (i) 6th abdominal segment b. Mushroom gland (ii) 2nd-6th abdominal segment c. Spermatheca (iii) 6th-7th abdominal segment d. Ovaries in females (iv) 4th-6th abdominal segment
A)
a(ii), b(iii), c(i), d(iv)
done
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B)
a(iv), b(iii), c(i), d(ii)
done
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C)
a(ii), b(i), c(iii), d(iv)
done
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D)
a(iii), b(i), c(iv), d(ii)
done
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Which of the following is an incorrect match w.r.t. organic compound shown and its identification?
A)
- An amino acid with functional group as hydroxymethyl
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B)
\[{{\operatorname{CH}}_{3}}{{\left( C{{H}_{2}} \right)}_{14}}COOH\] - A saturated fatty acid, palmitic acid
done
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C)
- A phospholipid, lecithin
done
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D)
- A nitrogenous base, adenine
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How many of the given statements are correct?
A. Water is the most abundant chemical in the living organisms. B. A protein is a heteropolymer and not a homopolymer. C. In a polysaccharide, left end is called reducing end and the right end is called non-reducing end. D. A nucleotide is the building block of nucleic acids, which consist of a hetero-cyclic compound (nitrogenous base), a monosaccharide and a phosphate.
A)
One
done
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B)
Two
done
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C)
Three
done
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D)
Four
done
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Which of the following factors can affect the enzymatic activity?
A. Change in temperature B. Change in pH C. Change in substrate concentration D. Binding of specific chemical to enzyme
A)
A, B, C, D
done
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B)
A, B, D
done
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C)
A, B
done
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D)
B, C, D
done
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Consider the following statements A-D with certain blanks. Find the option which correctly fills up these blanks
A. The protein portion of enzyme is called (i) B. Prosthetic groups are (ii) bound to the protein part of enzyme. C. (iii) is the prosthetic group of enzyme catalase. D. (iv) are nucleic acids with catalytic power.
A)
(i) Co-factor (ii) Tightly (iii) Haem (iv) Ribozyme
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B)
(i) Apoenzyme (ii) Loosely (iii) NAD (iv) Ribonuclease P
done
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C)
(i) Co-factor (ii) Loosely (iii) NAD (iv) Ribonuclease P
done
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D)
(i) Apoenzyme (ii) Tightly (iii) Haem (iv) Ribozyme
done
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View Answer play_arrow
The given reproductive structure is a method of
A)
Asexual reproduction in hydra
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B)
Sexual reproduction in earthworm
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C)
Asexual reproduction in sponges
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D)
Sexual reproduction in cockroach
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Following is diagrammatic representation of menstrual cycle depicting certain events. The uterine events have been labelled as phases A, B, C and D. The ovarian hormones have been labelled as W, X and pituitary hormones as Y and Z. Answer the questions that follow
(i) Lack of which phase is indicative of pregnancy? (ii) During which phase implantation of blastocyst takes place? (iii) Identify the hormones W, X, Y & Z. (iv) A preovulatory surge of which hormone is necessary to cause ovulation?
A)
(i) Phase A (ii) Phase B (iii) W - Estrogen X - Progesterone Y-FSH Z - LH Z
done
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B)
(i) Phase A (ii) Phase D (iii) W - Estrogen X - Progesterone Y - FSH Z-LH (iv) Z
done
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C)
(i) Phase D (ii) Phase C (iii) W - Estrogen X - Progesterone Y-LH Z-FSH (iv) Y
done
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D)
(i) Phase D (ii) Phase B (iii) W - Progesterone X - Estrogen Y-FSH Z-LH (iv) Y
done
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Find the incorrect statement w.r.t. pregnancy and embryonic development in humans.
A)
Placenta is a functional unit between developing embryo and maternal body formed by interdigitation of chorionic villi and uterine tissue
done
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B)
Human chorionic gonadotropin (hCG), human placental lactogen (hPL) and relaxin are produced in women only during pregnancy
done
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C)
The inner cell mass contain stem cells which have the potency to give rise to all the tissues and organs
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D)
By the end of second trimester, the first movements of the foetus and appearance of hair on head is usually observed
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According to 2001 census report, the population growth rate of India was
A)
17/1000/year
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B)
25/1000/year
done
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C)
33/1000/year
done
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D)
8/1000/year
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Which of the following is correct description of the contraceptive device shown?
A)
Lippes loop - Increase phagocytosis of sperms in uterus
done
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B)
LNG-20 - Make uterus unsuitable for implantation and cervix hostile to sperms
done
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C)
CuT - Cu ions released suppress sperm motility and the fertilising capacity of sperms
done
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D)
Implant - Inhibit ovulation and implantation as well as alter the quality of cervical mucus to retard entry of sperms
done
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How many of the following statements are wrong w.r.t. STDs?
A. AIDs is the most dangerous STD. B. Hepatitis B, genital herpes and HIV infection are not curable C. Ectopic pregnancy and cancer are not included under the complications of STDs. D. The incidence of STDs are reported to be very high among persons in the age group of 15-24 years.
A)
One
done
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B)
Two
done
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C)
Three
done
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D)
Four
done
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Which of the following ART involves transfer of an ovum collected from a donor into the fallopian tube of another female who cannot produce one, but can provide suitable environment for fertilisation and further development?
A)
IUT
done
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B)
ZIFT
done
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C)
ICSI
done
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D)
GIFT
done
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Which of the following is correct match w.r.t. human ancestor, its cranial capacity and cenar I feature? Ancestor Cranial Feature capacity
A)
Australopithecus 500 CC: Hunted with I stone weapons but essentially ate fruit I
done
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B)
Homo habilis 650-800 CC: First human like being the hominid. They probably ate meat
done
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C)
Homo erectus 900 CC: Probably did not ate meat
done
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D)
More than one option is correct
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Which of the following factor can change allelic frequency?
A. Gene flow B. Natural selection C. Random mating D. Founder effect E. Genetic recombination
A)
A, B, C, D, E
done
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B)
A, B, E
done
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C)
C, D, E
done
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D)
A, B, D, E
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The following diagram shows forelimbs of certain mammals. These represent
A)
Homologous organs - Convergent evolution
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B)
Analogous organs - Divergent evolution
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C)
Homologous organs - Divergent evolution
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D)
Analogous organs - Convergent evolution
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Based on observations made during a sea voyage in a sail ship called H.M.S. Beagle, Charles Darwin concluded that
A)
Evolution of life forms had occurred riven by use and disuse of organs
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B)
Allelic frequencies in a population are stable and is constant from generation to generation
done
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C)
Mutation causes evolution as these are random and directionless
done
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D)
Existing life forms share similarities to varying degrees not only among them- selves but also with life forms that existed millions of years ago
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Which of the following is a correct match w.r.t. pathogen and its site of attack (body cell/organ) in the human body?
A)
Ascaris - Lymphatic vessels
done
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B)
Trichophyton - Lungs
done
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C)
Plasmodium - Hepatocytes and RBCs
done
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D)
Entamoeba - Small intestine histolytica
done
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All of the following statements are correct w.r.t. heroin except
A)
It binds to specific opioid receptors present in our central nervous system and gastromtestinal tract
done
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B)
It is chemically diacetylmorphine
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C)
It is formed by ethylation of cannabinoids
done
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D)
It is a depressant and slows down body functions
done
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Fill in the blank
\[\underline{A}\] involves mating of animals of two different breeds. Hisardale, a new breed of B, has been developed through this mechanism.
A B
A)
Cross-breeding Sheep
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B)
Cross-breeding Goat
done
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C)
Out-crossing Sheep
done
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D)
Out-crossing Goat
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View Answer play_arrow
Hydrochloric acid, saliva and tears are included in
A)
physical barriers of innate immunity
done
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B)
physiological barriers of innate immunity
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C)
cytokine barriers of innate immunity
done
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D)
cellular barriers of innate immunity
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View Answer play_arrow
Find the incorrect match
A)
Colostrum - IgA antibodies
done
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B)
Recombinant DNA - Hepatitis B vaccine technology produced from yeast
done
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C)
Allergy - Release of chemicals like histamine and serotonin from the mast cells
done
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D)
Autoimmune - Adrenaline disease
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Which of the following limitation of traditional hybridisation procedure has been overcome by rDNA technology?
A)
Introduction of desirable genes without introducing undesirable genes into the target organism
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B)
To permit variation in the target organism
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C)
To produce hybrid vigour
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D)
Both [b] and [c]
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Which of the following technique has been shown in the given diagram?
A)
Agarose gel electrophoresis in which smallest DNA fragment moves farther
done
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B)
Identification and elimination of non- transformants
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C)
Agarose gel electrophoresis in which DNA fragments resolve according to their size
done
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D)
More than one option is correct
done
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In the given E. coli cloning vector pBR322, restriction site of Pvu II is present in
A)
ampR
done
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B)
tetR
done
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C)
rop
done
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D)
ori
done
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All of the following are significance of using GM plants except
A)
GM plants are tolerant to abiotic stresses
done
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B)
GM plants are less dependent on chemical pesticides
done
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C)
GM plants have increased efficiency at mineral usage
done
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D)
GM plants help in increasing post-harvest losses
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View Answer play_arrow
Which of the following recombinant protein has been used to treat emphysema?
A)
\[\beta -galactosidase\]
done
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B)
Alpha-lactalbumin
done
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C)
\[\alpha -antitrypsin\]
done
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D)
Adenosine deaminase
done
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View Answer play_arrow