question_answer 1) A coil of resistance 10\[\Omega \] and an inductance 5 H is connected to a 100 V battery. The energy stored in the coil is
A)
325 erg
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B)
125 J
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C)
250 erg
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D)
250 J
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question_answer 2) A simple pendulum of length; has a brass bob attached at its lower end. Its period is T. If a steel bob of same size, having density \[x\] times that of brass, replaces the brass bob and its length is changed, so that period becomes, 2T then new length is
A)
\[2l\]
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B)
\[4l\]
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C)
\[4lx\]
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D)
\[\frac{41}{x}\]
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question_answer 3) Mass of 2 kg is moving with a string in horizontal circle with angular velocity 5 cycles/min keeping the radius constant, tension in string is doubled. Now, the angular velocity of the mass will be
A)
14 cycles/min
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B)
10 cycles/min
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C)
2.25 cycles/min
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D)
7 cycles/min
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question_answer 4) The equation of motion for a body executing SHM is given by\[y=1.5\text{ }sin(10~+\text{ }5)\]. Then the frequency is given by
A)
5\[\pi \] Hz
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B)
1.5 Hz
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C)
5 Hz
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D)
\[\pi \]Hz
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question_answer 5) A black body emits heat at the rate of 20 W when its temperature is\[727{}^\circ C\]. Another black body emits heat at the rate of 15 W when its temperature is\[227{}^\circ C\]. Compare the area of the surface of the two bodies if the surrounding is at NTP.
A)
16 : 1
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B)
1 : 4
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C)
12 : 1
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D)
1 : 12
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question_answer 6) In order to double the separation between the molecules (keeping temperature fixed), the final pressure must be made how many times the initial pressure?
A)
Halved
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B)
1/4 A
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C)
1/8 th
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D)
1/16 th
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question_answer 7) What is the potential energy of the soap film formed on a frame of area\[4\times {{10}^{-3}}{{m}^{2}}\]? If the area of the film is reduced by half, the change in its potential energy will be (Surface tension of the soap solution is\[{{10}^{-3}}N/m\])
A)
\[32\times {{10}^{-5}}J,\text{ }16\times {{10}^{-5}}J\]
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B)
\[16\times {{10}^{-5}}J\text{ }8\times {{10}^{-5}}J\]
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C)
\[48\times {{10}^{-5}}J,\text{ }12\times {{10}^{-5}}J,\]
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D)
\[36\times {{10}^{-5}}J\text{ }2\times {{10}^{-5}}J\]
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question_answer 8) A body rolls without slipping. The radius of gyration of the body about an axis passing through its centre of mass is K. The radius of the body is R. The ratio of rotational kinetic energy to translational kinetic energy is
A)
\[\frac{{{K}^{2}}}{{{R}^{2}}}\]
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B)
\[\frac{{{R}^{2}}}{{{K}^{2}}+{{R}^{2}}}\]
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C)
\[\frac{{{R}^{2}}}{{{K}^{2}}+{{R}^{2}}}\]
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D)
\[{{K}^{2}}+{{R}^{2}}\]
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question_answer 9) In Metre Bridge or Wheatstone bridge for measurement of resistance, the known and the unknown resistances are interchanged. The error so removed is
A)
end correction
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B)
index error
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C)
due to temperature effect
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D)
random error
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question_answer 10) The compressibility of water is\[4\times {{10}^{-5}}\]per unit atmospheric pressure, 100 cc of water is subjected to a change of pressure of 100 atmosphere. The change in volume will be
A)
\[4\times {{10}^{-1}}cc\]
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B)
\[4\times {{10}^{-4}}cc\]
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C)
\[4\times {{10}^{-2}}cc\]
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D)
\[4\times {{10}^{-3}}cc\]
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question_answer 11) The gas in a vessel is subjected to a pressure of 20 atm at a temperature\[27{}^\circ C\]. The pressure of the gas in a vessel after one-half of the gas is released from the vessel and the temperature of the remainder is raised by\[50{}^\circ C\] is
A)
8.5 atm
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B)
10.8 atm
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C)
11.7 atm
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D)
17 atm
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question_answer 12) A tap supplies water at\[15{}^\circ C\]and another tap connected to geyser supplies water at\[95{}^\circ C\]. How much hot water must be taken so as to get 60 kg of water at\[35{}^\circ C\]?
A)
5kg
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B)
10kg
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C)
15 kg
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D)
20 kg
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question_answer 13) The magnifying power of a telescope is 9. Hen it is adjusted for parallel rays, the distance between the objective and the eye-piece is found to be 20 cm. The focal length of the lenses are
A)
18 cm, 2 cm
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B)
11 cm, 9 cm
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C)
10 cm, 10 cm
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D)
11 cm, 5 cm
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question_answer 14) If the energy of a 100\[\pi F\] capacitor charged to 6 kV could all be used to lift a 50 kg mass, hat would be the greatest vertical height through which mass could be raised?
A)
0.6 mm
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B)
3.6 m
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C)
1.2 mm
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D)
12 m
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question_answer 15) The daniel cell is balanced on 125 cm length of a potentiometer. Now the cell is short circuited by a resistance\[2\,\Omega \] and the balance is obtained at 100 cm. The internal resistances of the Daniel cell is
A)
\[\frac{4}{5}\Omega \]
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B)
1.5 \[\Omega \]
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C)
1.25 \[\Omega \]
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D)
0.5\[\Omega \]
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question_answer 16) Among which the magnetic susceptibility does not depend on the temperature?
A)
Diamagnetism
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B)
Paramagnetism
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C)
Ferromagnetism
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D)
Ferrite
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question_answer 17) A galvanometer has a current range of 15 mA and voltage range 750 mV. To convert this galvanometer into an ammeter of range 25 A, the shunt required is
A)
0.8 \[\Omega \]
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B)
0.93 \[\Omega \]
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C)
0.03 \[\Omega \]
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D)
2.0 \[\Omega \]
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question_answer 18) In an atom, two electrons move around the nucleus in circular orbits or radii R and 4R. The ratio of the times taken by them to complete one revolution will be
A)
8 :1
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B)
1 : 4
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C)
4 : 1
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D)
1: 8
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question_answer 19) The moment of magnet is\[0.1\text{ }A-{{m}^{2}}\]and the force acting on each pole in a uniform magnetic field of 0.36 oersted is\[1.44\times {{10}^{-4}}\] N. The distance between the poles of magnet is
A)
2.5 cm
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B)
5.0 cm
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C)
1.25cm
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D)
1.17cm
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question_answer 20) 1 kg of water is evaporated from 6 kg of sea water containing 4% salt. The percentage of salt in the remaining solution will be
A)
1%
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B)
3.33%
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C)
4%
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D)
4.8%
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question_answer 21) A certain radioactive substance has a half-life of 5 years. Thus, for a nucleus in a sample of the element, the probability of decay in 10 years is
A)
50%
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B)
75%
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C)
100%
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D)
60%
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question_answer 22) An L-C resonant circuit contains a 400 pF capacitor and a 100 \[\mu H\] inductor. It is set in to oscillation coupled to an antenna. the wavelength of the radiated electromagnetic waves is
A)
377 mm
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B)
377 m
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C)
377 cm
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D)
3.77 cm
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question_answer 23) Four resistance of 10\[\Omega \], 60 \[\Omega \] 100 \[\Omega \] and 200 \[\Omega \] respectively taken in order are used to form a. Wheatstones bridge. A 15 V battery is connected to the ends of a 200\[\Omega \], resistance the current through it will be
A)
\[7.5\times {{10}^{-5}}A\]
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B)
\[7.5\times {{10}^{-4}}A\]
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C)
\[7.5\times {{10}^{-3}}A\]
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D)
\[7.5\times {{10}^{-2}}A\]
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question_answer 24) A reversible engine working between the temperature limits of 600 K and 1200 K receives 50 kJ of heat. The work done by the engine will be
A)
50 kJ
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B)
100 kJ
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C)
25 kJ
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D)
\[-25\text{ }kJ\]
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question_answer 25) Platinum and silicon are heated up to\[250{}^\circ C\] and after that cooled. In this process of cooling
A)
resistance of platinum will increase and that of silicon will decrease
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B)
resistance of silicon will increase and that of platinum will decrease
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C)
resistance of both will decrease
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D)
resistance of both will increase
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question_answer 26) A ball after falling freely from a height of 4.9 m strikes a horizontal plane. If the coefficient of restitution is\[\frac{3}{4},\]the ball will strike second time 4 with the plane after
A)
\[\frac{1}{2}s\]
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B)
\[1\,s\]
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C)
\[\frac{3}{2}s\]
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D)
\[\frac{3}{4}s\]
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question_answer 27) A particle covers equal distance around a circular path, in equal internals of time. Which of the following quantities connected with the motion of the particle remains constant with time?
A)
Velocity
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B)
Acceleration
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C)
Speed
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D)
Displacement
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question_answer 28) A 500 kg horse pulls a cart of mass 1500 kg along a level road with an acceleration of\[1\text{ }m/{{s}^{2}}\]. If the coefficient of sliding friction is 0.2, then the horizontal force exerted by the earth on the horse is
A)
300 kg wt
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B)
400 kg wt
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C)
500 kg wt
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D)
600 kg wt
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question_answer 29) The transfer ratio \[\beta \] of a transistor is 50. The input resistance of the transistor when used in the common emitter mode is 1 k\[\Omega \]. The peak value of the collector alternating current for an input peak voltage of 0.01 V is
A)
0.25 \[\mu A\]
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B)
0.01 \[\mu A\]
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C)
500 \[\mu A\]
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D)
100 \[\mu A\]
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question_answer 30) If an electron enters a magnetic field with its velocity pointing in the same direction as the magnetic field, then the
A)
electron will turn to its right
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B)
electron will turn to its left
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C)
velocity of the electron will increase
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D)
velocity of the electron will remain Unchanged
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question_answer 31) Two charges of magnitude\[4\times {{10}^{-3}}C\]and \[6\times {{10}^{-8}}C\]at A and B are 50 cm apart. The electric potential is zero at a point along AB, where distance from A is given by
A)
40 cm
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B)
20 cm
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C)
10 cm
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D)
30 cm
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question_answer 32) Two pendulums begin to swing simultaneously. The first pendulum makes 9 full oscillations while the other makes 7 oscillations. The ratio of lengths of the two pendulums is
A)
\[\frac{9}{7}\]
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B)
\[\frac{7}{9}\]
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C)
\[\frac{49}{81}\]
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D)
\[\frac{81}{49}\]
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question_answer 33) The temperature of source and sink of a Carnot engine are\[327{}^\circ C\]and\[27{}^\circ C\] respectively. The efficiencies of the engine is
A)
\[1-\left( \frac{27}{327} \right)\]
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B)
\[\frac{27}{327}\]
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C)
\[0.5\]
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D)
\[0.7\]
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question_answer 34) The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate by using the formula \[p=\frac{F}{{{l}^{2}}}.\] If the maximum errors in the measurement of force and length are 4% and 2% respectively. Then the maximum error in the measurement of pressure is
A)
1%
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B)
2%
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C)
8%
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D)
10%
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question_answer 35) A point initially at rest moves along x-axis. Its acceleration varies with time as\[a=(61+5)\]in m/s. If it starts from origin, the distance covered in 2s is
A)
20m
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B)
18m
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C)
16 m
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D)
25 m
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question_answer 36) A glass marble projected horizontally from the top of a table falls at a distance \[x\] from the edge of the table. If h is the height of the table, then the velocity of projection is
A)
\[h\sqrt{\frac{g}{2x}}\]
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B)
\[x\sqrt{\frac{g}{2h}}\]
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C)
\[gxh\]
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D)
\[gx+h\]
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question_answer 37) A circuit has a self-inductance of 1H and carries a current of 2A. To prevent sparking, when the circuit is switched off, a capacitor which can withstand 400v is used. The least capacitance of the capacitor connected across the switch must be equal to
A)
50 \[\mu F\]
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B)
25 \[\mu F\]
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C)
100 \[\mu F\]
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D)
12.5 \[\mu F\]
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question_answer 38) A man wants to slide down a rope. The breaking load for the rope \[\frac{2}{3}\] rd of the weight of the man. With what minimum acceleration should fireman slide down?
A)
\[\frac{g}{4}\]
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B)
\[\frac{g}{3}\]
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C)
\[\frac{2g}{3}\]
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D)
\[\frac{g}{6}\]
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question_answer 39) A particle moving with a velocity equal to 0.4 m/s is subjected to an acceleration of 0.15 \[m/{{s}^{2}}\]for 2 s in a direction at right angles to its direction of motion. The resultant velocity is
A)
0.7 m/s
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B)
0.5 m/s
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C)
m/s
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D)
between 0.7 and 0.1 m/s
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question_answer 40) If the amplitude of a wave at a distance r from a point source is A, the amplitude at a distance 2 r will be
A)
\[2A\]
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B)
A
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C)
\[\frac{A}{2}\]
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D)
\[\frac{A}{4}\]
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question_answer 41) Mixture used for the tips of match stick is
A)
\[S+K\]
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B)
\[S{{b}_{2}}{{S}_{3}}+red\,P\]
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C)
\[\text{KCl}{{\text{O}}_{\text{3}}}\text{+S+white}\,\text{P}\]
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D)
\[{{\text{K}}_{\text{2}}}\text{C}{{\text{r}}_{\text{2}}}{{\text{O}}_{\text{7}}}\text{+K+S}\]
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question_answer 42) The structural formula of hypophosphorus acid is
A)
done
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B)
done
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C)
done
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D)
done
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question_answer 43) Which of the following has\[p\pi -d\pi \]bonding?
A)
\[NO_{3}^{-}\]
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B)
\[SO_{3}^{2-}\]
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C)
\[BO_{3}^{3-}\]
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D)
\[CO_{3}^{2-}\]
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question_answer 44) Ozonised oxygen can be obtained from\[{{H}_{2}}O\]by the action of
A)
conc. \[{{H}_{2}}S{{O}_{4}}\]
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B)
\[KMn{{O}_{4}}\]
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C)
\[MnSO_{4}^{2-}\]
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D)
\[{{F}_{2}}\]
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question_answer 45) Welding of magnesium can be done in an atmosphere of
A)
\[Xe\]
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B)
He
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C)
Kr
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D)
\[{{O}_{2}}\]
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question_answer 46) A substance X when heated with cone.\[{{H}_{2}}S{{O}_{4}}\] liberates a gas which turns starch paper blue. The substance X is
A)
\[NaI\]
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B)
\[NaBr\]
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C)
\[NaCl\]
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D)
\[NaN{{O}_{3}}\]
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question_answer 47) Sangers reagent is used for the identification of
A)
side chain of amino acids
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B)
number of amino acids in the peptide chain
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C)
N-terminal of a peptide chain
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D)
C-terminal of a peptide chain
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question_answer 48) Which of the following is provitamin A?
A)
\[\beta -\]carotene
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B)
Calciferol
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C)
Chlorophyll
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D)
Ergosterol
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question_answer 49) When silver nitrate is heated to red hot what is formed?
A)
\[A{{g}_{2}}O\]
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B)
\[Ag\]
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C)
\[Ag{{O}_{2}}\]
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D)
\[AgN{{O}_{2}}\]
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question_answer 50) Which is used as a fungicide?
A)
\[CuS{{O}_{4}}\]and slaked lime
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B)
\[CuO\] and quick lime
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C)
\[CuC{{O}_{3}}\]and quick lime
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D)
\[CuS{{O}_{4}}\]and calcium nitrate
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question_answer 51) In the following nuclear reaction, the other product is \[_{52}T{{e}^{130}}{{+}_{1}}{{H}^{2}}{{\xrightarrow[{}]{{}}}_{53}}{{I}^{131}}+?\]
A)
positron
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B)
one neutron
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C)
proton
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D)
alpha particle
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question_answer 52) According to MO theory which of the following statements about the magnetic character and bond order is correct regarding\[O_{2}^{+}\]?
A)
Paramagnetic and bond order\[<{{O}_{2}}\]
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B)
Paramagnetic and bond order\[>{{O}_{2}}\]
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C)
Diamagnetic and bond order\[<{{O}_{2}}\]
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D)
Diamagnetic and bond order\[>{{O}_{2}}\]
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question_answer 53) With which of the given pairs\[C{{O}_{2}}\]resembles?
A)
\[HgC{{l}_{2}},{{C}_{2}}{{H}_{2}}\]
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B)
\[{{C}_{2}}{{H}_{2}},N{{O}_{2}}\]
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C)
\[HgC{{l}_{2}},\text{ }SnC{{l}_{4}}\]
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D)
\[{{N}_{2}}O,\text{ }N{{O}_{2}}\]
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question_answer 54) The order of magnitude of ionic radii of ions \[N{{a}^{+}},M{{g}^{2+}},A{{l}^{3+}}\]and\[S{{i}^{4+}}\]is
A)
\[N{{a}^{+}}>S{{i}^{4+}}>A{{l}^{3+}}>M{{g}^{2+}}\]
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B)
\[M{{g}^{2+}}>N{{a}^{+}}>A{{l}^{3+}}>S{{i}^{4+}}\]
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C)
\[N{{a}^{+}}>M{{g}^{2+}}>A{{l}^{3+}}>S{{i}^{4+}}\]
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D)
\[S{{i}^{4+}}>A{{l}^{3+}}>M{{g}^{2+}}>N{{a}^{+}}\]
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question_answer 55) Which one of the following has Frenkel defect?
A)
\[NaCl\]
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B)
\[AgBr\]
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C)
Diamond
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D)
All of these
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question_answer 56) Zn and Hg belong to the same group yet they differ in many of their properties. The property that is shared by both is
A)
they form oxide with air
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B)
they react with steam readily
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C)
they react with dil.\[{{H}_{2}}S{{O}_{4}}\]
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D)
they react with hot\[NaOH\]
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question_answer 57) In the extraction of copper from its sulphide ore, the metal is formed by reduction of \[C{{u}_{2}}O\]with
A)
\[FeS\]
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B)
CO
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C)
\[C{{i}_{2}}S\]
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D)
\[S{{O}_{2}}\]
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question_answer 58) N-methylaniline on reaction with nitrous acid gives
A)
N-nitroso-N-methylaniline
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B)
p-nitroso-N-methylaniline
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C)
p-nitro-N-methylaniline
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D)
N-nitro-N-methylaniline
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question_answer 59) Which of the following has the highest melting point?
A)
n-pentane
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B)
Iso-pentane
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C)
Neo-pentane
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D)
Cyclopentane
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question_answer 60) Identify Z in the following reaction sequence \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\xrightarrow[160-180{}^\circ ]{conc.\,{{H}_{2}}S{{O}_{4}}}X\xrightarrow[{}]{B{{r}_{2}}}\] \[Y\xrightarrow[(ii)\,NaN{{H}_{2}}]{(i)\,Alc.\,LOH}Z\]
A)
\[C{{H}_{3}}CH(N{{H}_{2}})C{{H}_{2}}N{{H}_{2}}\]
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B)
\[C{{H}_{3}}CHOHC{{H}_{2}}OH\]
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C)
\[C{{H}_{3}}\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C}}\,=C{{H}_{2}}\]
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D)
\[C{{H}_{3}}C=CH\]
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question_answer 61) The hydrogen bond is strongest in
A)
\[O-H---S\]
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B)
\[SH---O\]
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C)
\[FH---F\]
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D)
\[FH---O\]
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question_answer 62) Nitromethane is subjected to the treatment with chlorine in the presence of sodium hydroxide, the main product is
A)
monochloromethane
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B)
trichloromethane
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C)
chloropicrin
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D)
None of the above
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question_answer 63) According to Freundlich adsorption isotherm at high pressure, the value of\[\frac{x}{m}\]is
A)
directly proportional to pressure
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B)
inversely proportional to pressure
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C)
directly proportional to square of pressure
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D)
independent of pressure
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question_answer 64) The difference of water molecules in gypsum and plaster of Paris is
A)
\[\frac{5}{2}\]
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B)
\[2\]
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C)
\[\frac{1}{2}\]
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D)
\[1\frac{1}{2}\]
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question_answer 65) An acidified solution of potassium dichromate is turned green when
A)
hydrogen gas is bubbled through it
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B)
air is passed through it
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C)
zinc pieces are added to it
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D)
zinc chloride is added to it
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question_answer 66) The ionisation energy of hydrogen atom in the ground state is\[x\text{ }kJ\]. The energy required for an electron to jump from 2nd orbit to 3rd orbit is
A)
\[\frac{5x}{36}\]
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B)
\[5x\]
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C)
\[7.2\,x\]
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D)
\[\frac{x}{6}\]
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question_answer 67) At a given temperature, the equilibrium constants for the reactions, \[NO(g)+\frac{1}{2}{{O}_{2}}(g)N{{O}_{2}}(g)\] and \[2N{{O}_{2}}(g)2NO(g)+{{O}_{2}}(g)\] are\[{{K}_{1}}\]and\[{{K}_{2}}\]respectively. If\[{{K}_{1}}\]is\[4\times {{10}^{-3}}\]then will be
A)
\[8\times {{10}^{-3}}\]
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B)
\[16\times {{10}^{-3}}\]
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C)
\[6.25\times {{10}^{4}}\]
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D)
\[6.25\times {{10}^{6}}\]
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question_answer 68) At constant T and p which of the following statements is correct for the reaction, \[CO(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow[{}]{{}}C{{O}_{2}}(g)?\]
A)
\[\Delta H=\Delta E\]
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B)
\[\Delta H<\Delta E\]
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C)
\[\Delta H>\Delta E\]
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D)
\[\Delta H\]is independent of physical state of reactants
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question_answer 69) Sodium metal crystallises in body centred cubic lattice with the cell edge\[a=4.29\overset{o}{\mathop{\text{A}}}\,\]. What is the radius of the sodium atom?
A)
\[1.86\overset{o}{\mathop{\text{A}}}\,\]
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B)
\[6.81\overset{o}{\mathop{\text{A}}}\,\]
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C)
\[8.61\overset{o}{\mathop{\text{A}}}\,\]
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D)
\[2.94\overset{o}{\mathop{\text{A}}}\,\]
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question_answer 70) The major product of dehydration of\[{{(C{{H}_{3}})}_{3}}C-C{{H}_{2}}OH\]is
A)
\[{{(C{{H}_{3}})}_{2}}C=CHC{{H}_{3}}\]
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B)
\[C{{H}_{3}}CH=CHC{{H}_{3}}\]
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C)
\[{{(C{{H}_{3}})}_{2}}CHCH=C{{H}_{2}}\]
done
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D)
\[{{(C{{H}_{3}})}_{2}}C=C{{H}_{2}}\]
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question_answer 71) Urea is a diamide of
A)
carbonic acid
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B)
acetic acid
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C)
formic acid
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D)
acetamide
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question_answer 72) The IUPAC name of the compound, \[\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,-\underset{\begin{smallmatrix} | \\ N{{H}_{2}} \end{smallmatrix}}{\mathop{CH}}\,-COOH\]is
A)
2-amino-3-hydroxypropanoic acid
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B)
1-hydroxy-2-aminopropan-3-oicacid
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C)
1-amino-2-hydroxypropanoic acid
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D)
3-hydroxy-2-aminopropanoic acid
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question_answer 73) Which one of the following is the stablest structure of cyclohexatriene?
A)
Chair form
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B)
Boat form
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C)
Half chair form
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D)
Planar form
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question_answer 74) Which of the following is the most reactive towards ring nitration?
A)
o-xylene
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B)
Toluene
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C)
p-xylene
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D)
m-xylene
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question_answer 75) One of the following is a Bronsted acid but not a Bronsted base
A)
\[{{H}_{2}}S\]
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B)
\[{{H}_{2}}O\]
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C)
\[HC{{O}_{3}}\]
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D)
\[N{{H}_{3}}\]
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question_answer 76) The pH of a solution obtained by mixing 50 mL of\[0.4\text{ }N\text{ }HCl\]and 50 mL of\[0.2\text{ }N\text{ }NaOH\]is
A)
\[-log\text{ }2\]
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B)
\[-log\text{ 0}.2\]
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C)
1.0
done
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D)
2.0
done
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question_answer 77) In the cell,\[Zn|Z{{n}^{2+}}({{C}_{1}})||C{{u}^{2+}}({{C}_{2}})|Cu\] \[{{E}_{cell}}-E_{cell}^{o}=0.0591\,V.\]The ratio\[\frac{{{C}_{1}}}{{{C}_{2}}}\]at 298 K will be
A)
2
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B)
\[{{10}^{-2}}\]
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C)
1
done
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D)
100
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question_answer 78) If three faradays of electricity is passed through the solutions of\[AgN{{O}_{3}},CuS{{O}_{4}}\]and \[AuC{{l}_{3}},\]the molar ratio of the cations deposited at the cathode will be
A)
\[1:1:1\]
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B)
\[1:2:3\]
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C)
\[3:2:1\]
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D)
\[6:3:2\]
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question_answer 79) The rms velocity of\[C{{O}_{2}}\]at a temperature T (in K) is\[x\text{ }cm\text{ }{{s}^{-1}}\]. At what temperature (in K) the rms velocity of nitrous oxide would be\[4x\text{ }cm{{s}^{-1}}\]?
A)
16 T
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B)
2T
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C)
4T
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D)
32 T
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question_answer 80) The oxidation number and covalency of sulphur in sulphur molecule\[({{S}_{8}})\]are
A)
0 and 2
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B)
+6 and 8
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C)
0 and 8
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D)
+6 and 2
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question_answer 81) Which of the following statements is correct? Dielectric constant of\[{{H}_{2}}{{O}_{2}}\]
A)
increases with dilution
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B)
decreases with dilution
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C)
is unaffected by dilution
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D)
first increases and then decreases with dilution
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question_answer 82) The alumina-silica clay called bentonite is dropped from aeroplanes in the slurry form for
A)
fertilizing the soil
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B)
spreading water over fires
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C)
cooling the soil
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D)
fumigation
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question_answer 83) Which of the following on heating does not form an anhydride?
A)
Oxalic acid
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B)
Succinic acid
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C)
Maleic acid
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D)
Glutamic acid
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question_answer 84) Which of the following trihalides of P has maximum bond angle?
A)
\[P{{F}_{3}}\]
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B)
\[PB{{r}_{3}}\]
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C)
\[PC{{l}_{3}}\]
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D)
\[P{{I}_{3}}\]
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question_answer 85)
\[{{C}_{6}}{{H}_{5}}NM{{e}_{2}}+HCONM{{e}_{2}}\xrightarrow[{}]{POC{{l}_{3}}}\] The above reaction is called
A)
Hofmann mustard oil reaction
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B)
Vilsmeier-Haack reaction
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C)
Darzens reaction
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D)
Arndt-Eistert reaction
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question_answer 86) A typical compound which undergoes both Cannizaro reaction and aldol condensation is
A)
\[{{(C{{H}_{3}})}_{2}}CH-CHO\]
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B)
\[HCHO\]
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C)
\[{{C}_{6}}{{H}_{5}}CHO\]
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D)
\[C{{H}_{3}}CHO\]
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question_answer 87) Which of the following sets of reactants is used for the preparation of paracetamol from phenol?
A)
\[HN{{O}_{3}},{{H}_{2}}/Pd,{{(C{{H}_{3}}CO)}_{2}}O\]
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B)
\[{{H}_{2}}S{{O}_{4}},{{H}_{2}}/Pd,{{(C{{H}_{3}}CO)}_{2}}O\]
done
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C)
\[{{C}_{6}}{{H}_{5}}{{N}_{2}}Cl,SnC{{l}_{2}}/HCl,(C{{H}_{3}}C{{O}_{2}})O\]
done
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D)
\[B{{r}_{2}}/{{H}_{2}}O,Zn/HCl,{{(C{{H}_{3}}CO)}_{2}}O\]
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question_answer 88) Ethyl acetate is obtained when methyl magnesium bromide reacts with
A)
ethyl formate
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B)
acetyl chloride
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C)
carbon dioxide
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D)
ethyl chloroformate
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question_answer 89) 150 mL of\[{{C}_{2}}HOH\](density 0.78 g/mL) is diluted to 1 L by adding water. Molality of the solution is
A)
2.54
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B)
1.17
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C)
2.99
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D)
29.9
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question_answer 90) Which of the following does not have optical isomer?
A)
\[[Co(en){{(N{{H}_{3}})}_{2}}C{{l}_{2}}]Cl\]
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B)
\[[Co{{(en)}_{2}}C{{l}_{2}}]Cl\]
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C)
\[[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]\]
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D)
\[[Co{{(en)}_{3}}]C{{l}_{3}}\]
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question_answer 91) With oxalic acid, glycerol at\[260{}^\circ C\]gives
A)
formic acid
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B)
allyl alcohol
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C)
acrolein
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D)
glyceraldehyde
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question_answer 92) When phenolic ether is heated with HI, it yields
A)
alkyl halide + aryl halide + water
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B)
alkyl halide + phenol
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C)
alcohol + aryl halide
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D)
aryl halide + phenol
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question_answer 93) The rate constant for the reaction, \[2{{N}_{2}}{{O}_{5}}\xrightarrow[{}]{{}}4N{{O}_{2}}+{{O}_{2}}\] is\[3.0\times {{10}^{-5}}{{s}^{-1}}\]. If the rate is\[2.40\times {{10}^{-5}}\]then the concentration of\[{{N}_{2}}{{O}_{5}}\](in mol/L) is
A)
1.4
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B)
1.2
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C)
0.04
done
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D)
0.8
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question_answer 94) Permanent hardness of water can be removed by adding
A)
sodium chloride
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B)
soda lime
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C)
sodium carbonate
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D)
sodium sulphate
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question_answer 95) The pyrimidine bases present in DNA are
A)
cytosine and adenine
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B)
cytosine and guanine
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C)
cytosine and thymine
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D)
cytosine and uracil
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question_answer 96) Arsenic drugs are mainly used in the treatment of
A)
jaundice
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B)
typhoid
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C)
cholera
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D)
syphilis
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question_answer 97) Which of the following is a secondary pollutant?
A)
NO
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B)
CO
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C)
\[S{{O}_{2}}\]
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D)
Phenols
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question_answer 98) For a chemical reaction,.........can never be fraction.
A)
order
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B)
half-life
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C)
molecularity
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D)
rate constant
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question_answer 99) Which of the following has\[s{{p}^{2}}-\]hybridisation?
A)
\[S{{O}_{2}}\]
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B)
\[{{H}_{2}}O\]
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C)
\[N{{H}_{3}}\]
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D)
\[SO_{4}^{2-}\]
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question_answer 100) Acetic acid dissolved in benzene show a molecular mass of
A)
30
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B)
60
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C)
120
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D)
180
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question_answer 101) Wild rice originated in
A)
valley to Kashmir
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B)
coast of Arabian Sea
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C)
coast of Bay of Bengal
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D)
delta of River Ganges
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question_answer 102) Who is the famous Indian agriculturist. Scientist of International repute?
A)
B P Pal
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B)
V L Chopra
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C)
E A Siddiqui
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D)
M S Swaminathan
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question_answer 103) Mark the odd one.
A)
Family
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B)
Class
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C)
Taxon
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D)
Phylum
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question_answer 104) With which one of the following a bacterium resembles most?
A)
Yeast
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B)
Virus
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C)
Amoeba
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D)
Anabaena
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question_answer 105) Gymnosperms lack
A)
herbs
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B)
shrubs
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C)
trees
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D)
lianas
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question_answer 106) Thalamiflorae, Calyciflorae and Disciflorae are series of
A)
Polypetalae
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B)
Gamopetalae
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C)
Monochlamydae
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D)
Monocots
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question_answer 107) Cyanophycean algae are much important from point of view of
A)
food and fodder value
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B)
medicinal value
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C)
fibres and oils
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D)
oils fertility
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question_answer 108) Gill of mushrooms are meant for
A)
reproduction
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B)
respiration
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C)
assimilation
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D)
nutrition
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question_answer 109) Monoecious mosses in which antheridia and archegonia are borne on separate branches of the same plant is called
A)
synoecious mosses
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B)
heteroecious mosses
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C)
autoecious mosses
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D)
autoecious mosses
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question_answer 110) Formation of sex cells was first seen in
A)
pteridophytes
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B)
bryophytes
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C)
gymnosperms
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D)
angiosperms
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question_answer 111) Multicellular spores are released from the capsule of
A)
Riccia, Marchantia
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B)
Pellia, Porella
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C)
Anthoceros, Notothylas
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D)
None of the above
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question_answer 112) Which of the following can be seen only under the electron microscope?
A)
Ribosomes
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B)
Leucoplasts
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C)
Chloroplasts
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D)
Chromosomes
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question_answer 113) Geiger-Muller counter is used for the detection and measurement of
A)
RBCs
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B)
WBCs
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C)
radiation
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D)
amino acids
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question_answer 114) Golgi apparatus is absent in
A)
yeast
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B)
liver cells
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C)
higher plants
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D)
blue-green algae
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question_answer 115) Which of the following algae exhibits gametic meiosis?
A)
Chara
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B)
Sargassam
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C)
Polysiphonia
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D)
Oedogonium
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question_answer 116) Which one is not a carbohydrate?
A)
Starch
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B)
Chitin
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C)
Glycogen
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D)
Methionine
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question_answer 117) How many trisomics are possible in Datura?
A)
10
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B)
24
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C)
12
done
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D)
30
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question_answer 118) Utricularia grows in
A)
evergreen forests
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B)
lakes and ponds as submerged hydrophyte
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C)
bog as a marsh plant
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D)
tropical deciduous forest
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question_answer 119) The maize plant is monoecious and the flowers are
A)
cleistogamous
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B)
unisexual
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C)
bisexual
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D)
neutar
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question_answer 120) Seed surface produces cellulosic fibres in
A)
Helianthus
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B)
Taraxacum
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C)
Gossypium
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D)
Xanthium
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question_answer 121) Perianth is reduced to lodicules in
A)
Liliaceae
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B)
Poaceae
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C)
Orchidaceae
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D)
Musaceae
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question_answer 122) Ring porous and diffused porous wood are produced by
A)
conifers
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B)
angiosperms
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C)
monocots
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D)
cycads
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question_answer 123) Bast fibres are obtained from
A)
epidermis
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B)
seed surface
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C)
phloem
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D)
pith
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question_answer 124) Meristem, which produces vascular bundles, is
A)
procambium
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B)
lateral meristem
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C)
secondary meristem
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D)
mass meristem
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question_answer 125) In hypertonic solution, water potential of cell
A)
increases
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B)
decreases
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C)
first increases and then decreases
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D)
remains unchanged
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question_answer 126) Enzyme catalyzed reactions can be inhibited by
A)
\[Z{{n}^{2+}}\]
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B)
\[M{{g}^{2+}}\]
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C)
\[H{{g}^{2+}}\]
done
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D)
\[C{{u}^{2+}}\]
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question_answer 127) One of the following amino acids which one is sulphur containing one?
A)
Aspargine
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B)
Proline
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C)
Serine
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D)
Methionine
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question_answer 128) Photolysis of water is caused by
A)
PS-I
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B)
PS-II
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C)
Both [a] and [b]
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D)
None of these
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question_answer 129) Name the enzyme which changes its characteristics with change in concentration of\[{{O}_{2}}\]?
A)
RuBP carboxylase
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B)
PEP
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C)
PGA
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D)
None of these
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question_answer 130) Oxygen produced in photosynthesis comes from \[{{\text{H}}_{2}}\text{O}\] was shown by
A)
Robert Mayer
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B)
Ruben and Kamen
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C)
Calvin
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D)
Robert Hill
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question_answer 131) How many ATP and NADH; are produced in photorespiration?
A)
2 and 4
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B)
1 and 2
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C)
4 and 6
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D)
Zero
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question_answer 132) Enzymes and hormones both are synthesized from
A)
endothecium
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B)
inner layer
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C)
archesporium
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D)
tapetum
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question_answer 133) The ploidy level is not the same in
A)
integument and nucellus
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B)
root tip and shoot tip
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C)
secondary nucleus and endosperm
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D)
antipodals and synergids
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question_answer 134) In the reciprocal crosses, the ploidy level does not change in
A)
embryo
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B)
fruit
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C)
endosperms
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D)
All of these
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question_answer 135) The material best for micropropagation is
A)
pollen
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B)
embryo
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C)
endosperm
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D)
shoot or root tips
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question_answer 136) Cybrids carry
A)
two similar genomes
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B)
only one genome
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C)
several genomes
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D)
one genome and two plasmones
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question_answer 137) Apical dominance is not affected by
A)
indole acetic acid
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B)
gibberellins
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C)
indole acetaldehyde
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D)
indole butyric acid
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question_answer 138) Sleeping movements in Samanea saman leaves are regulated by
A)
nitrogen
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B)
potassium
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C)
phosphorus
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D)
magnesium
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question_answer 139) Maximum amount of growth in root occurs
A)
in the presence of light
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B)
at its apex
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C)
behind the apex
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D)
in the presence of soil
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question_answer 140) Ecotypes are
A)
only morphologically different
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B)
only genetically different
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C)
Both [a] and [b]
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D)
both morphologically and genetically similar
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question_answer 141) Individuals of one kind occupying a particular geographical area are forming a
A)
community
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B)
population
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C)
biome
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D)
species
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question_answer 142) Shifting cultivation is harming much to
A)
biodiversity
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B)
forestry
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C)
silviculture
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D)
horticulture
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question_answer 143) Petrol and natural gases are found between the layers of
A)
magnetic rocks
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B)
volcanic rocks
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C)
igneous rocks
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D)
sedimentary rocks
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question_answer 144) Interlocking of food chain results into the formation of
A)
ecological pyramids
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B)
energy flow
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C)
food web
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D)
None of the above
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question_answer 145) Banana is cultivated by
A)
vegetative means
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B)
bulbs
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C)
seeds
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D)
bulbilk
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question_answer 146) Resetting of leaves in infected plants refers to
A)
etiolation
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B)
chlorosis
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C)
necrosis
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D)
atrophy
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question_answer 147) Plasmids capable of degrading octane, xylene, camphor and naphthalene occur in cells of
A)
Pseudomonas putida
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B)
Bacillus subtilis
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C)
Xanthomonas citri
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D)
E. coli
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question_answer 148) Transitional zone between two vegetation types is referred to
A)
ecotone
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B)
ecotype
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C)
ecades
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D)
ecophenes
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question_answer 149) Dischidia is a pitcher plant which
A)
shows insectivory
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B)
shows parasitism
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C)
shows epiphytic nature
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D)
None of the above
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question_answer 150) Auxin (IAA) was isolated by Thimann in 1935 from
A)
bryophytes
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B)
algae
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C)
fungi
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D)
pteridophytes
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question_answer 151) Histiocyte is a connective tissue cell which takes part in
A)
secretion
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B)
phagocytosis
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C)
fibre production
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D)
matrix production
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question_answer 152) Major cause of anaemia is deficiency of
A)
\[C{{a}^{2+}}\]
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B)
\[F{{e}^{2+}}\]
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C)
\[N{{a}^{+}}\]
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D)
\[M{{g}^{2+}}\]
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question_answer 153) Mast cells secrete
A)
heparin
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B)
histamine
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C)
serotonin
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D)
All of these
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question_answer 154) Axons serve to
A)
take away impulse from cytons
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B)
bring impulse to cytons
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C)
bring blood to heart
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D)
None of the above
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question_answer 155) Cerebral hemispheres of rat are connected by
A)
corpus luteum
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B)
corpus callosum
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C)
corpus albicans
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D)
corpus spongiosum
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question_answer 156) A renal portal system is found in
A)
man
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B)
frog
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C)
horse
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D)
rabbit
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question_answer 157) Rennin is found in
A)
bile
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B)
saliva
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C)
gastric juice
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D)
pancreatic juice
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question_answer 158) Absorption of fat-soluble vitamin requires
A)
chemotrypsin
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B)
intrinsic factor
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C)
pancreatic lipase
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D)
None of these
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question_answer 159) Rate of breathing is directly attacted by
A)
oxygen in trachea
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B)
concentration of \[{{O}^{2}}\]
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C)
concentration of \[C{{O}^{3}}\]
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D)
diaphragm expansion
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question_answer 160) Carotid labyrinth contains
A)
baroreceptors
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B)
phonoreceptors
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C)
chaemoreceptors
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D)
olfactoreceptors
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question_answer 161) Lymph capillaries differ from systemic blood capillaries in that they
A)
collapse when interstitial pressure increases
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B)
are absent in the central nervous system
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C)
are not lined by endothelium
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D)
lack valves
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question_answer 162) Which of these will be completely reabsorbed from glomerular filtrate under normal conditions in the nephrons?
A)
Urea
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B)
Salts
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C)
Glucose
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D)
Uric acid
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question_answer 163) The largest muscle in the human body is
A)
gluteus
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B)
stapedius
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C)
sartorius
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D)
masseter
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question_answer 164) In man, coccygeal bone is formed by the fusion of......... vertebrae.
A)
3
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B)
4
done
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C)
5
done
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D)
8
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question_answer 165) Myelin sheath is a layer covering
A)
muscle fibre in a vertebrate
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B)
nerve fibre in a vertebrate
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C)
ne rve fibre in an insect
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D)
chick embryo
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question_answer 166) Which one is main fuel for brain?
A)
Glucose
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B)
Riboflavin
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C)
Ornithine
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D)
Glutamic acid
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question_answer 167) Which of the following is known as cochlear duct?
A)
Scala media
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B)
Scala vestibuli
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C)
Scala tympani
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D)
None of these
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question_answer 168) The adrenal cortex secretes all the following hormones except
A)
tyrosine
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B)
cholesterol
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C)
glycoprotein
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D)
None of these
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question_answer 169) Which one is a modified lymph gland?
A)
Pineal
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B)
Thymus
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C)
Pituitary
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D)
Thyroid
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question_answer 170) The blood vessel and nerves enter the ovary through
A)
hilus
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B)
zona pellucida
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C)
antrum
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D)
Graafian follicle
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question_answer 171) In simplest type of placenta, six barriers separate maternal blood from foetal blood. How many barriers are lost in human placenta?
A)
One
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B)
Four
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C)
Two
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D)
Three
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question_answer 172) Decline in hearing power begins in man after
A)
2 years
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B)
10 years
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C)
60 years
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D)
80 years
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question_answer 173) The bones of old people become hard and brittle due to deposition of
A)
calcium
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B)
potassium
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C)
sodium
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D)
carbon
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question_answer 174) Highest rate of primary productivity is found in
A)
tropical rainforests
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B)
coral reef and estuaries
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C)
forest floor
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D)
warm temperature forests
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question_answer 175) Hormone used in sterile cows to induce lactation is
A)
relaxin
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B)
stilbesterol
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C)
oestrogen
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D)
progesterone
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question_answer 176) The disease, tetanus is also known as
A)
shingles
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B)
gangrene
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C)
lockjaw
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D)
whooping cough
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question_answer 177) Which of the following T-cells are destroyed by HIV?
A)
Cytotoxic T-cells
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B)
Killer T-cells
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C)
Suppressor T-cells
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D)
Helper T-cells
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question_answer 178) Humulin is a
A)
natural insulin
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B)
insulin synthesized by genetically engineered E. coli
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C)
human insulin synthesized by pancreas
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D)
chemically synthesized insulin
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question_answer 179) In Hydra, sperms and ova are formed from
A)
cnidoblasts
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B)
interstitial cells
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C)
epithelio-muscular cells
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D)
None of the above
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question_answer 180) How many filaments of Spirogyra are produced by germination of 100 zygospores?
A)
100
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B)
200
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C)
400
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D)
50
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question_answer 181) Muscles in sponges are
A)
striated
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B)
smooth
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C)
Both [a] and [b]
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D)
None of these
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question_answer 182) Which of these is not a cnidarian?
A)
Jellyfish
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B)
Silverfish
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C)
Sea anemone
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D)
Physalia
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question_answer 183) Cirrus in Taenia is associated with
A)
excretion
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B)
digestion
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C)
circulation
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D)
reproduction
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question_answer 184) During its migration in host body. Ascents passes through
A)
lungs
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B)
spleen
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C)
kidney
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D)
skeletal muscle
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question_answer 185) A definite number of body segments is found in
A)
slug
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B)
leech
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C)
earthworm
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D)
tapeworm
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question_answer 186) The outermost covering of the egg of housefly is
A)
chitin
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B)
chorion
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C)
vitelline membrane
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D)
plasma membrane
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question_answer 187) Pharyngeal gill-slits are found in
A)
Octopus
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B)
crayfish
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C)
dogfish
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D)
cuttlefish
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question_answer 188) Preen gland occurs in
A)
aves
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B)
pisces
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C)
reptiles
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D)
mammals
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question_answer 189) Sarcoplasmic reticulum is found in
A)
liver
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B)
brain
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C)
muscles
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D)
All of these
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question_answer 190) Select the odd one.
A)
Oleic acid
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B)
Butyric acid
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C)
Cupric acid
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D)
Glutamic acid
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question_answer 191) Which one is essential fatty acid having three double bonds?
A)
Linoleic acid
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B)
Linolenic acid
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C)
Arachidonic acid
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D)
Clupanodonic acid
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question_answer 192) Amylase is an example of
A)
ligase
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B)
hydrolase
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C)
transferase
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D)
oxidoreductase
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question_answer 193) Lipase breaks the
A)
ester bonds
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B)
peptide bonds
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C)
hydrogen bonds
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D)
glycosidic bonds
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question_answer 194) A gene, whose phenotypic effect kills the bearer, is called
A)
lethal
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B)
pleiotropic
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C)
supplementary
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D)
complementary
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question_answer 195) The segment of a DNA molecule determining the amino acid sequence of a protein, is known as
A)
operator gene
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B)
regulator gene
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C)
structural gene
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D)
modifier gene
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question_answer 196) A boy receives his X-chromosome from
A)
his mother only
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B)
his father only
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C)
Both father and mother
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D)
Either mother or father
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question_answer 197) The possibilities of hereditary and evolutionary changes are greater in species that are reproduced by
A)
fission
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B)
budding
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C)
sexual means
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D)
spore formation
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question_answer 198) The most important theory of general biology was proposed by
A)
Beadle and Tatum
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B)
Watson and Crick
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C)
Darwin and Wallace
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D)
Mendel and Morgan
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question_answer 199) Carriers of colour blindness are
A)
men
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B)
women
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C)
Both [a] and [b]
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D)
None of these
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question_answer 200) Which of these enzyme is not required for DNA synthesis?
A)
Ligase
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B)
DNAse
done
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C)
DNA polymerase
done
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D)
RNA polymerase
done
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