question_answer 1) An electric fan is placed on a stationary boat and air is blown with it on the sail of the boat. Which of the following statements is correct?
A)
The boat will be uniformly accelerated in the direction of the flow of the air
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B)
The boat will start moving with uniform speed
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C)
The boat will be uniformly accelerated opposite to the direction of flow of air
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D)
The boat will remain stationary as before
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question_answer 2) When the bob of a simple pendulum swings, the work done by tension in the string is
A)
\[>0\]
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B)
\[<0\]
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C)
zero
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D)
maximum
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question_answer 3) If P represents radiation pressure, c represents speed of light and Q represents radiation energy striking a unit area per second then non-zero integers\[x,\text{ }y\]and z such that\[{{P}^{x}}{{Q}^{y}}{{c}^{z}}\]is dimensionless, are
A)
\[x=1,y=1,z=-1\]
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B)
\[x=1,y=-1,z=1\]
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C)
\[x=-1,y=1,z=1\]
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D)
\[x=1,y=1,z=1\]
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question_answer 4)
The potential energy U between two atoms in a diatomic molecule as a function of the distance\[x\]between atoms has been shown in the adjoining figure. The atoms are
A)
attracted when\[x\]lies between A and B and are repelled when\[x\]lies between B and C
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B)
attracted when\[x\]lies between B and C and are repelled when\[x\]lies between A and B
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C)
attracted when they reach B
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D)
repelled when they reach B
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question_answer 5) For a particle executing simple harmonic motion, the kinetic energy K is given by, \[K={{K}_{0}}{{\cos }^{2}}\omega t.\]The maximum value of potential energy is
A)
\[{{K}_{0}}\]
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B)
zero
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C)
\[{{K}_{0}}/2\]
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D)
not obtainable
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question_answer 6) The speed of sound in hydrogen at NTP is 1270 m/s. Then, the speed in a mixture of hydrogen and oxygen in the ratio 41 by volume will be
A)
317 m/s
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B)
635 m/s
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C)
830 m/s
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D)
950 m/s
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question_answer 7) A water drop is divided into 8 equal droplets. The pressure difference between the inner and outer side of the big drop will be
A)
same as for smaller droplet
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B)
\[\frac{1}{2}\]of that for smaller droplet
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C)
\[\frac{1}{4}\]of that for smaller droplet
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D)
twice that for smaller droplet
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question_answer 8) A train of 150 m length is going towards north direction at a speed of\[10\text{ }m{{s}^{-1}}\]. A parrot flies at a speed of\[5\text{ }m{{s}^{-1}}\]towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to
A)
12s
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B)
8s
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C)
15s
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D)
10s
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question_answer 9) Two vessels A and B having equal volume contain equal masses of hydrogen in A and helium in B at 300 K. Then, mark the correct statement.
A)
The pressure exerted by hydrogen is half that exerted by helium
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B)
The pressure exerted by hydrogen is equal to that exerted by helium
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C)
Average KE of the molecule of hydrogen is half the average KE of the molecules of helium
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D)
The pressure exerted by hydrogen is twice that exerted by helium
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question_answer 10) A charge Q is uniformly distributed over a large square plate of copper. The electric field at a point very close to the centre of the plate is 10 V/m. If the copper plate is replaced by a plastic plate of the same geometrical dimensions and carrying the same charge Q uniformly distributed, then the electric field at the point P will be
A)
5 V/m
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B)
zero
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C)
10 V/m
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D)
20 V/m
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question_answer 11) A piece of wire of resistance R is cut into n equal parts. These parts are then connected in parallel. If the equivalent resistance of the parallel combination is\[R',\], then (R/R) is
A)
1/1
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B)
\[n/1\]
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C)
\[{{n}^{2}}/1\]
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D)
\[1/n\]
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question_answer 12) Ice starts freezing in a lake with water at\[0{}^\circ C\]when the atmospheric temperature is\[-10{}^\circ C\]. If the time taken for 1 cm of ice to be formed is 12 min; the time taken for the thickness of the ice to change from 1 cm to 2 cm will be
A)
12 min
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B)
less than 12 min
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C)
more than 12 min but less than 24 min
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D)
more than 24 min
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question_answer 13) An ideal gas is taken through a cyclic thermo dynamical process through four steps. The amounts of heat involved in these steps are \[{{Q}_{1}}=5960\text{ }J,\text{ }{{Q}_{2}}=-5585\text{ }J,\text{ }{{\text{Q}}_{3}}=-2980\text{ }J,\] \[{{Q}_{4}}=3645\text{ }J;\]respectively. The corresponding works involved are\[{{W}_{1}}=22000\,J,{{W}_{2}}=-825\,J,\] \[{{W}_{3}}=-1100\,J\]and\[{{W}_{4}}\]respectively. The value of\[{{W}_{4}}\]is
A)
1315 J
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B)
275 J
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C)
765J
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D)
675J
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question_answer 14) A beam of light consisting of red, green and blue colours is incident on a right-angled prism. The refractive indices of the material of the prism for the above red, green and blue wavelengths are 1.39, 1.44 and 1.47 respectively. The prism will
A)
separate part of the red colour from the green and blue colours
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B)
separate part of the blue colour from the red and green colours
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C)
separate all the three colours from one another
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D)
not separate even partially any colour from the other two colours
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question_answer 15)
Three blocks of masses\[{{m}_{1}},{{m}_{2}}\]and\[{{m}_{3}}\]kg are placed in contact with each other on a frictionless table. A force F is applied on the heaviest mass\[{{m}_{1}};\]the acceleration of\[{{m}_{3}}\]will be
A)
\[\frac{F}{{{m}_{1}}}\]
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B)
\[\frac{F}{{{m}_{1}}+{{m}_{2}}}\]
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C)
\[\frac{F}{{{m}_{2}}+{{m}_{3}}}\]
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D)
\[\frac{F}{{{m}_{1}}+{{m}_{2}}+{{m}_{3}}}\]
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question_answer 16) A particle is moving along a circular path of radius 5 m with a uniform speed\[5\text{ }m{{s}^{-1}}\]. What will be the average acceleration when the particle completes half revolution?
A)
Zero
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B)
\[10\,\,m{{s}^{-2}}\]
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C)
\[10\,\pi \,m{{s}^{-2}}\]
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D)
\[\frac{10}{\pi }\,\,m{{s}^{-2}}\]
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question_answer 17) ECE of copper is\[3.3\times {{10}^{-7}}kg/C\]. If 100 kWh energy is consumed at 33 V in a copper voltameter, then mass of copper liberated is
A)
3.6kg
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B)
3.3kg
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C)
1kg
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D)
\[1\,mg\]
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question_answer 18) A ray of light is incident on the surface of separation of a medium with the velocity of light at an angle\[45{}^\circ \]and is refracted in the medium at an angle\[30{}^\circ \]. What will be the velocity of light in the -medium?
A)
\[1.96\times {{10}^{8}}m/s\]
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B)
\[2.12\times {{10}^{8}}m/s\]
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C)
\[3.18\times {{10}^{8}}m/s\]
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D)
\[3.33\times {{10}^{8}}m/s\]
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question_answer 19) Two identical wires A and B have the same length L and carry the same current\[I\]. Wire A is bent into a circle of radius R and wire B is bent to form a square of side a. If\[{{B}_{1}}\]and\[{{B}_{2}}\] are the values of magnetic induction at the centre of the circle and the centre of the square respectively, then the ratio\[{{B}_{1}}/{{B}_{2}}\]is
A)
\[({{\pi }^{2}}/8)\]
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B)
\[({{\pi }^{2}}/8\sqrt{2})\]
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C)
\[({{\pi }^{2}}/16)\]
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D)
\[({{\pi }^{2}}/16\sqrt{2})\]
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question_answer 20) In non-resonant circuit, what will be the nature of the circuit for frequencies higher than the resonant frequency?
A)
Resistive
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B)
Capacitive
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C)
Inductive
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D)
None of these
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question_answer 21) A particle of mass m is moving in a circular path of constant radius r such that centripetal acceleration\[{{a}_{c}}\]varying with time is\[{{a}_{c}}={{k}^{2}}r{{t}^{2}}\]where k is a constant. What is the power delivered to the particle by the force acting on it?
A)
\[2mk{{r}^{2}}t\]
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B)
\[mk{{r}^{2}}{{t}^{2}}\]
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C)
\[m{{k}^{2}}{{r}^{2}}t\]
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D)
\[m{{k}^{2}}r{{t}^{2}}\]
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question_answer 22) The maximum height attained by a projectile is increased by 5%. Keeping the angle of projection constant, what is the percentage increase in horizontal range?
A)
5%
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B)
10%
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C)
15%
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D)
20%
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question_answer 23) A spot of light S rotates in a horizontal plane with a constant angular velocity of 0.1 rad/s. The spot of light P moves along the wall at a distance of 3 m from S. The velocity of spot P, where\[\theta =45{}^\circ ,\]is
A)
0.5 m/s
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B)
0.6 m/s
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C)
0.7 m/s
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D)
0.8 m/s
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question_answer 24) White light may be considered to be a mixture of wave with\[\lambda \]ranging between \[3000\overset{\text{o}}{\mathop{\text{A}}}\,\] and \[7800\overset{\text{o}}{\mathop{\text{A}}}\,\]. An oil film of thickness \[10000\overset{\text{o}}{\mathop{\text{A}}}\,\] is examined normally by the reflected light. If \[\mu =1.4,\]then the film appears bright for
A)
\[4308\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ }5091\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ }6222\overset{\text{o}}{\mathop{\text{A}}}\,\]
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B)
\[4000\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ }5091\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ 5600}\overset{\text{o}}{\mathop{\text{A}}}\,\]
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C)
\[4667\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ 6222}\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ 7000}\overset{\text{o}}{\mathop{\text{A}}}\,\]
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D)
\[4000\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ 4667}\overset{\text{o}}{\mathop{\text{A}}}\,,\text{ 5600}\overset{\text{o}}{\mathop{\text{A}}}\,,\,\,70\text{00}\overset{\text{o}}{\mathop{\text{A}}}\,\]
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question_answer 25) To get the maximum flight a ball must be thrown as
A)
done
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B)
done
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C)
done
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D)
any of , and
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question_answer 26) Rain is falling vertically downwards with a velocity of 4 km/h. A man walks in the rain with a velocity of 3 km/h. The raindrops will fall on the man with a velocity of
A)
1 km/h
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B)
3 km/h
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C)
4 km/h
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D)
5 km/h
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question_answer 27) A machine gun is mounted on a 200 kg vehicle on a horizontal smooth road (friction negligible). The gun fires 10 bullets per sec with a velocity of 500 m/s. If the mass of each bullet be 10 g, what is the acceleration produced in the vehicle?
A)
\[25cm/{{s}^{2}}\]
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B)
\[25\text{ r}r/{{s}^{2}}\]
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C)
\[50cm/{{s}^{2}}\]
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D)
\[50\,rr/{{s}^{2}}\]
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question_answer 28) The displacement of a particle executing periodic motion is given by \[y=4{{\cos }^{2}}(t/2)\sin (1000t)\] This expression may be considered to be a result of superposition of
A)
two waves
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B)
three waves
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C)
four waves
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D)
five waves
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question_answer 29) If the series limit wavelength of the Lyman series for hydrogen atom is \[912\overset{\text{o}}{\mathop{\text{A}}}\,\] then the series limit wavelength for the Balmer series for the hydrogen atom is
A)
\[912\overset{\text{o}}{\mathop{\text{A}}}\,\]
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B)
\[912\times 2\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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C)
\[912\times 4\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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D)
\[\frac{912}{2}\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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question_answer 30) Assuming that about 20 MeV of energy is released per fusion reaction \[_{1}{{H}^{2}}{{+}_{1}}{{H}^{3}}{{\to }_{0}}{{n}^{1}}{{+}_{2}}H{{e}^{4}}\] then the mass of\[_{1}{{H}^{2}}\]consumed per day in a fusion reactor of power 1 MW will approximately be
A)
0.001 g
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B)
0.1 g
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C)
10.0 g
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D)
1000 g
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question_answer 31) A pure semiconductor behaves slightly as a conductor at
A)
room temperature
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B)
low temperature
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C)
high temperature
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D)
Both and
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question_answer 32) A coil has an inductance of 0.7 H and is joined in series with a resistance of\[220\,\Omega \]. When an alternating emf of 220 V at 50 cps is applied to it, then the wattles component of the current in the circuit is
A)
5 A
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B)
0.5 A
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C)
0.7 A
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D)
7 A
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question_answer 33) Which of the following statements is /are true?
A)
A clock when taken on a mountain can be made to give correct time if we change the length of pendulum suitably
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B)
An increase in value of g makes a clock go slow
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C)
If the length of a pendulum is increased, the clock becomes fast
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D)
A clock when taken to a deep mine or carried to the top of a mountain becomes slow
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question_answer 34) Figure below show regular hexagons?, with charges at the vertices. In which case is the electric field at the centre zero?
A)
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B)
done
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C)
done
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D)
done
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question_answer 35) There is a current of 40 A in a wire of\[{{10}^{-6}}{{m}^{2}}\]area of cross-section. If the number of free electrons per cubic metre is\[{{10}^{29}},\]then the drift velocity is
A)
\[250\times {{10}^{-3}}m/s\]
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B)
\[25.0\times {{10}^{-3}}m/s\]
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C)
\[2.50\times {{10}^{-3}}m/s\]
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D)
\[1.25\times {{10}^{3}}m/s\]
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question_answer 36) A mixture of hi moles of monoatomic gas and moles of diatomic gas has\[\frac{{{C}_{p}}}{{{C}_{V}}}=\gamma =1.5\]. Then
A)
\[{{n}_{1}}={{n}_{2}}\]
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B)
\[2{{n}_{1}}={{n}_{2}}\]
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C)
\[{{n}_{1}}=2{{n}_{2}}\]
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D)
\[2{{n}_{1}}=3{{n}_{2}}\]
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question_answer 37) Change in frequency due to Dopple?s effect is produced when
A)
the source and the observer are moving in the same direction
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B)
the source and the observer are both at rest
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C)
there is a relative motion between the source and the observer
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D)
there is a resultant motion between the source and observer
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question_answer 38) A dip needle arranged to move freely in the magnetic meridian dips by an angle\[\theta \]. If the vertical plane in which the needle moves is rotated through an angle a to the magnetic meridian, then the needle will dip by an angle
A)
\[\theta \]
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B)
\[\alpha \]
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C)
more than\[\theta \]
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D)
less than\[\theta \]
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question_answer 39)
The coming rays are forming rainbows
A)
Figure (1) forms primary rainbow
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B)
Figure (1) and (3) form primary rainbow
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C)
Figure (2) forms secondary rainbow
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D)
Figure (1) forms secondary rainbow
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question_answer 40) A table tennis ball which has been covered with a conducting paint is suspended by a silk thread so that it hangs between two metal plates. One plate is earthed. When the other. plate is connected to a high voltage generator, the ball
A)
is attracted to the high voltage plate and stays there
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B)
hangs without moving
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C)
swings backward and forward hitting each plate in turn
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D)
is repelled to the earthed plate and stays there
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question_answer 41) In a step-up transformer, the turn ratio is 1 2 . A Leclanche cell (emf = 1.5 V) is connected across the primary. The voltage developed in the secondary would be
A)
3.0V
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B)
0.75V
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C)
1.5V
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D)
zero
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question_answer 42) If the total magnetic field due to earth is 28 A/m, then the total magnetic induction due to earth is
A)
28 T
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B)
280 ab-amp/cm
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C)
0.352 gauss
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D)
0.352 T
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question_answer 43) In an adiabatic process wherein pressure is increased by\[\frac{2}{3}%\]. If\[\frac{{{C}_{p}}}{{{C}_{V}}}=\frac{3}{2},\]then the volume decreases by about
A)
\[\frac{4}{9}%\]
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B)
\[\frac{2}{3}%\]
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C)
\[4%\]
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D)
\[\frac{9}{4}%\]
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question_answer 44) The wavelength of the\[{{K}_{\alpha }}\]line for an element of atomic number 43 is\[\lambda .\]Then the wavelength of the\[{{K}_{\alpha }}\]line for an element of atomic number
A)
\[\left( \frac{43}{29} \right)\lambda \]
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B)
\[\left( \frac{42}{28} \right)\lambda \]
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C)
\[\left( \frac{9}{4} \right)\lambda \]
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D)
\[\left( \frac{4}{9} \right)\lambda \]
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question_answer 45) The process of adding impurities to the pure semiconductor is called
A)
drouping
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B)
drooping
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C)
doping
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D)
none of these
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question_answer 46) The radioactivity of a sample is\[{{R}_{1}}\]at a time\[{{T}_{1}}\]and\[{{R}_{2}}\]at times\[{{T}_{2}}\]. the half-life of the specimen is T, the number of atoms that have disintegrated at the time\[({{T}_{2}}-{{T}_{1}})\]is proportional to
A)
\[{{R}_{1}}{{T}_{1}}-{{R}_{2}}{{T}_{2}}\]
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B)
\[{{R}_{1}}-{{R}_{2}}\]
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C)
\[\frac{{{R}_{1}}-{{R}_{2}}}{T}\]
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D)
\[({{R}_{1}}-{{R}_{2}})T\]
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question_answer 47) A proton, a deuteron and an\[\alpha -\]particle with the same KE enter a region of uniform magnetic field, moving at right angles to B. What is the ratio of the radii of their circular paths?
A)
\[1:\sqrt{2}:1\]
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B)
\[1:\sqrt{2}:\sqrt{2}\]
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C)
\[\sqrt{2}:1:1\]
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D)
\[\sqrt{2}:\sqrt{2}:1\]
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question_answer 48) Two streams of protons move parallel to each other in the same direction. Then these
A)
do not interact at all
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B)
attract each other
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C)
repel each other
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D)
get rotated to be 1 to each other
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question_answer 49) The ratio of the speed of an object to the speed of its real image of magnification m of a convex mirror is
A)
\[-1/{{m}^{2}}\]
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B)
\[{{m}^{2}}\]
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C)
\[-m\]
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D)
\[1/m\]
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question_answer 50) The maximum current that flows in the fuse wire, before it blows out, varies with the radius r as
A)
\[{{r}^{3/2}}\]
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B)
r
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C)
\[{{r}^{2/3}}\]
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D)
\[{{r}^{1/2}}\]
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question_answer 51) The incorrect statement is
A)
circumference of electron orbit\[(2\pi r)=n\lambda \] (n = an integer)
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B)
de-Broglie equation:\[\lambda =\frac{n}{mv}\]
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C)
angular momentum of an electron\[\left( \frac{h}{mv}=\frac{2\pi r}{n}or\,mvr=n\frac{h}{2\pi } \right)\]is an integral multiple of\[\frac{h}{2\pi }\]
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D)
angular momentum of the electron is not quantized
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question_answer 52) Which of the following is not possible for\[4p\]or\[3d\]electrons?
A)
\[n=3,l=2,m=+1,s=+\frac{1}{2}\]
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B)
\[n=4,l=1,m=0,s=+\frac{1}{2}\]
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C)
\[n=3,l=3,m=+3,s=+\frac{1}{2}\]
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D)
\[n=4,l=1,m=-1,s=+\frac{1}{2}\]
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question_answer 53) Assertion :\[H{{e}_{2}}\]does not exist. Reason (R): Bond-order of\[H{{e}_{2}}\]is zero.
A)
A and R both are correct and R is me correct explanation of A.
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B)
A and R both are correct but R is not the correct explanation of A.
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C)
A is incorrect but R is correct.
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D)
Both A and R are incorrect.
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question_answer 54) Internal energy for one mole of an ideal gas is
A)
\[\frac{3}{2}RT\]
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B)
\[\frac{3}{2}kT\]
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C)
\[\frac{1}{2}RT\]
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D)
\[\frac{1}{2}kT\]
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question_answer 55) Which of the following is correct?
A)
\[{{C}_{V}}={{\left( \frac{\delta u}{\delta T} \right)}_{p}}\]
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B)
\[{{\left( \frac{\delta H}{\delta T} \right)}_{V}}\]
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C)
\[{{C}_{p}}-{{C}_{V}}=R\] for one mole of an ideal gas
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D)
\[{{\left( \frac{\delta u}{\delta V} \right)}_{T}}=-\frac{a}{{{V}^{2}}}\](internal pressure in van der Waals' equation)
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question_answer 56) The correct order of decreasing dipole moment of (I) toluene, (II) m -dichlorobenzene , (III) o-dichlorobenzene and (IV) p -dichlorobenzene is
A)
IV < II < I < III
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B)
IV < I < II < III
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C)
I < IV < II < III
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D)
IV < I < III < II
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question_answer 57) Which of the following is weakest?
A)
Ionic
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B)
Covalent
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C)
van der Waals forces
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D)
Metallic bond
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question_answer 58) The reaction favoured at low pressure is
A)
\[{{H}_{2}}(g)+{{I}_{2}}(g)2HI(g)\]
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B)
\[PC{{l}_{5}}(g)PC{{l}_{3}}(g)+C{{l}_{2}}(g)\]
done
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C)
\[{{N}_{2}}(g)+{{O}_{2}}(g)2NO(g)\]
done
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D)
\[{{N}_{2}}(g)+3{{H}_{2}}(g)2N{{H}_{3}}(g)\]
done
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View Answer play_arrow
question_answer 59) According to Bronsted, a base can
A)
accept protons
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B)
donate protons
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C)
lose a pair of electrons
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D)
gain a pair of electrons
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question_answer 60) Which of the following is incorrect?
A)
\[{{H}_{2}}{{O}_{2}}\]is a weak acid
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B)
\[{{H}_{2}}{{O}_{2}}\]is a weak alkali
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C)
\[{{H}_{2}}{{O}_{2}}\]acts as an oxidising agent
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D)
\[{{H}_{2}}{{O}_{2}}\]is a reducing agent
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question_answer 61) Diagonal relationship is not shown by
A)
Li and Mg
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B)
Be and Al
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C)
B and Si
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D)
C and P
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question_answer 62) The IUPAC name of\[{{(C{{H}_{3}})}_{2}}CHC{{H}_{3}}\]is
A)
dimethylethane
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B)
trimethylmethane
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C)
isopropylmethane
done
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D)
2-methyl propane
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View Answer play_arrow
question_answer 63) Which of the following is incorrect?
A)
Functional isomerism is shown by \[C{{H}_{3}}C{{H}_{2}}OH\text{ }and\text{ }C{{H}_{3}}OC{{H}_{3}}\]
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B)
\[H-\underset{\begin{smallmatrix} | \\ H \end{smallmatrix}}{\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{C}}}\,-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{C}}}\,-H\xrightarrow{Conc.\,{{H}_{2}}S{{O}_{4}}}\]\[H-\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{C}}\,=\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{C}}\,-H+{{H}_{2}}O\]
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C)
Glucose is a monosaccharide sugar
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D)
Fructose is a disaccharide sugar
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question_answer 64) The strongest acid is
A)
\[CH\equiv CH\]
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B)
\[{{C}_{6}}{{H}_{6}}\]
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C)
\[{{C}_{2}}{{H}_{6}}\]
done
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D)
\[C{{H}_{3}}OH\]
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question_answer 65) Assertion : Graphite is soft while diamond is very hard. Reason (R): Graphite has three dimensional structure while diamond has planar.
A)
A and R both are correct and R is the correct explanation of A.
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B)
A and R both are correct but R is not the correct explanation of A.
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C)
A is correct but R is incorrect.
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D)
A is incorrect while R is correct.
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question_answer 66) Which of the following is incorrect?
A)
A real gas behaves like an ideal gas over a wide range of pressure(\[\sim 100\]atm) at Boyle point.
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B)
A real gas behaves like an ideal gas over a wide range of pressure (\[\sim 100\]atm) at critical temperature of the gas.
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C)
\[{{\left( \frac{\delta u}{\delta V} \right)}_{T}}=0\]for an ideal gas.
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D)
\[{{\left( \frac{\delta u}{\delta V} \right)}_{T}}=\frac{a}{{{V}^{2}}}\]for a real gas obeying van der Waals' equation.
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question_answer 67) The homogeneous catalysis is shown by
A)
Haber?s process: \[{{N}_{2}}(g)+3{{H}_{2}}(g)\xrightarrow[{}]{Fe(s)}2N{{H}_{3}}(g)\]
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B)
Ostwald process: \[4N{{H}_{3}}(g)+5{{O}_{2}}(g)\xrightarrow[{}]{Pt(s)}\]
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C)
Contact process: \[2S{{O}_{2}}(g)+{{O}_{2}}(g)\xrightarrow{Pt(s)}2S{{O}_{3}}(g)\]
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D)
\[2{{C}_{2}}{{H}_{5}}OH(aq)\xrightarrow{{{H}_{2}}S{{O}_{4}}(aq)}\] \[{{C}_{2}}{{H}_{5}}-O-{{C}_{2}}{{H}_{5}}(aq)+{{H}_{2}}O(l)\]
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question_answer 68) Which of the following is incorrect?
A)
Invertase carries the hydrolysis of sugar into glucose and fructose.
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B)
Starch is converted into maltose with the help of diastase.
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C)
Maltase helps in converting maltose into glucose.
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D)
Maltase helps in converting starch into maltose.
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question_answer 69) Which of the following is incorrect match?
A)
done
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B)
Name of colloidal solution Examples Dispersed phase Dispersion medium Foam Soap leather, soda water Gas Solid
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C)
Name of colloidal solution Examples Dispersed phase Dispersion medium Solid foam Rubber, bread Gas Solid
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D)
Name of colloidal solution Examples Dispersed phase Dispersion medium Aerosol Mist, for, cloud Liquid Solid
Name of colloidal solution Examples Dispersed phase Dispersion medium Emulsion Milk, cod liver oil Liquid Liquid
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question_answer 70) Assertion : The ionic size of\[M{{g}^{2+}}>A{{l}^{3+}}\] Reason (R): In isoelectronic species, greater the nuclear charge, less is the size.
A)
A and R both are correct and R is the correct explanation of A.
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B)
A and R both are correct but R is not the correct explanation of A.
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C)
A is incorrect while R is correct.
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D)
A and R both are incorrect.
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question_answer 71) Assertion : Silica is soluble in HF. Reason (R): \[Si{{O}_{2}}+4HF\xrightarrow[{}]{{}}Si{{F}_{4}}+2{{H}_{2}}O\] \[Si{{F}_{4}}+2HF\xrightarrow[{}]{{}}{{H}_{2}}Si{{F}_{6}}\]
A)
A and R both are correct and R is the correct explanation of A.
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B)
A and R both are correct but R is not the correct explanation of A.
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C)
A and R both are incorrect.
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D)
A is correct while R is incorrect.
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question_answer 72) Total number of rare earth elements is
A)
8
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B)
32
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C)
14
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D)
10
done
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question_answer 73) In the reduction of\[KMn{{O}_{4}}\]by warm acidified oxalic acid, the oxidation number of Mn changes from
A)
+ 4 to + 2
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B)
+ 6 to + 4
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C)
+ 7 to +2
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D)
+ 7 to + 4
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question_answer 74) Assertion :\[{{[Co{{F}_{6}}]}^{3-}}\]is paramagnetic. Reason (R):\[C{{o}^{3+}}\]has\[3{{d}^{6}}\]outer electronic configuration. The unpaired electrons do not pair up because of weak field provided by\[{{F}^{-}}\].
A)
A and R both are correct and R is the correct explanation of A.
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B)
A and R both are correct but R is not the correct explanation of A.
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C)
A is incorrect while R is correct.
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D)
A and R both are incorrect.
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View Answer play_arrow
question_answer 75) In the nuclear reaction:\[_{4}^{9}Be+_{1}^{1}H\to X+_{2}^{4}He,\] the X is
A)
\[_{2}^{4}He\]
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B)
\[_{3}^{6}Li\]
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C)
\[_{3}^{7}Li\]
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D)
\[_{4}^{8}Be\]
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question_answer 76) Which of the following has the highest electron releasing tendency?
A)
\[{{F}^{-}}\]
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B)
\[O{{H}^{-}}\]
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C)
\[NH_{2}^{-}\]
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D)
\[CH_{3}^{-}\]
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question_answer 77) Which of the following is incorrect?
A)
Primary alcohols are easily oxidised to aldehydes, which are oxidised to acids with the same number of C-atoms.
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B)
Secondary alcohols are easily oxidised to ketones, which are oxidised to acids with the same number of C-atoms.
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C)
Secondary alcohols are easily oxidised to ketones, which are oxidised to acids with lesser number of C-atoms.
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D)
Secondary and tertiary alcohols on oxidation form acids with lesser number of C-atoms.
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View Answer play_arrow
question_answer 78) For the reaction: \[{{C}_{2}}{{H}_{5}}OH+HX\xrightarrow[(anhyd.)]{ZnC{{l}_{2}}}{{C}_{2}}{{H}_{5}}X+{{H}_{2}}O\] The order of reactivity of HX is shown by
A)
\[HBr>HCl>HI\]
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B)
\[HI>HCl>HBr\]
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C)
\[HI>HBr>HCl\]
done
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D)
\[HCl>HBr>HI\]
done
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question_answer 79) The compound which cannot reduce Fehling solution is
A)
\[HCHO\]
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B)
\[HCOOH\]
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C)
\[C{{H}_{3}}CHO\]
done
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D)
\[C{{H}_{3}}COOH\]
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View Answer play_arrow
question_answer 80) The correct order of basic strengths in benzene solution is
A)
\[C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{2}}NH>{{(C{{H}_{3}})}_{3}}N\]
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B)
\[{{(C{{H}_{3}})}_{2}}NH>{{(C{{H}_{3}})}_{3}}N>C{{H}_{3}}N{{H}_{2}}\]
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C)
\[{{(C{{H}_{3}})}_{3}}N>C{{H}_{3}}N{{H}_{2}}>{{(CH{{ }_{3}})}_{2}}NH\]
done
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D)
\[{{(C{{H}_{3}})}_{3}}N>{{(C{{H}_{3}})}_{2}}NH>C{{H}_{3}}N{{H}_{2}}\]
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question_answer 81) Which of the following will not give primary amine?
A)
\[C{{H}_{3}}CON{{H}_{2}}\xrightarrow[{}]{B{{r}_{2}}/KOH}\]
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B)
\[C{{H}_{3}}CN\xrightarrow[{}]{LiAl{{H}_{4}}}\]
done
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C)
\[C{{H}_{3}}NC\xrightarrow[{}]{LiAl{{H}_{4}}}\]
done
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D)
\[C{{H}_{3}}CON{{H}_{2}}\xrightarrow[{}]{LiAl{{H}_{4}}}\]
done
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View Answer play_arrow
question_answer 82) Bakelite is obtained from phenol by reacting it with
A)
\[C{{H}_{3}}CHO\]
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B)
acetal
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C)
\[HCHO\]
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D)
chlorobenzene
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question_answer 83) Nylon- 66 is
A)
polyamide
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B)
polyester
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C)
polystyrene
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D)
polyvinyl
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question_answer 84) Vitamin\[{{B}_{12}}\]contains
A)
Fe (II)
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B)
Co (III)
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C)
Zn (II)
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D)
Ca (II)
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question_answer 85) Which of the following is not true for antibiotics?
A)
Tetracycline is one of the broad spectrum antibiotics which are effective against a large number of harmful micro-organisms.
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B)
Streptomycin is highly effective against micro-organisms which cause tuberculosis.
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C)
Penicillin has a narrow spectrum and certain persons are sensitive to it.
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D)
Penicillin may be administered without testing the patients for sensitivity to it.
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question_answer 86) Assertion : Rate of reaction increases with increase in temperature. Reason (R): Number of collision increases with increase in temperature.
A)
A and R both are correct and R is the correct explanation of A.
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B)
A and R both are correct but R is not the correct explanation of A.
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C)
A is correct but R is incorrect.
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D)
A and R both are incorrect.
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question_answer 87) Which of the following is incorrect match for Hybridisation and geometry?
A)
Hybridistaion Geometry \[ds{{p}^{2}}\] Planar
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B)
\[{{d}^{3}}s\]and\[s{{p}^{3}}\] Tetragedrak
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C)
\[{{d}^{2}}s{{p}^{3}}\]and\[s{{p}^{3}}{{d}^{2}}\] Octahedral
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D)
\[{{d}^{3}}s\] Planar
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View Answer play_arrow
question_answer 88) Assertion : Meniscus of a liquid disappears at the critical temperature. Reason (R): Density of liquid and its gaseous phase become equal at the critical temperature.
A)
A and R both are correct and R is the correct explanation of A.
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B)
A and R both are correct but R is not the correct explanation of A.
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C)
A is correct but R is incorrect.
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D)
A is incorrect while R is correct.
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View Answer play_arrow
question_answer 89) Which of the following is correct?
A)
The outer electronic configuration of Cu (29) and Cr (24) are\[3{{d}^{9}},4{{s}^{2}}\]and\[3{{d}^{4}},4{{s}^{2}}\] respectively.
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B)
\[C{{H}_{3}}CHO\]gives hexamethylenetetramine with\[N{{H}_{3}}\]
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C)
\[\Delta G=\Delta G{}^\circ \]at equilibrium
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D)
\[{{A}_{2}}(g)+{{B}_{2}}(g)2AB(g)\]is unaffected by variations in pressure.
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question_answer 90) Which of the following is not true?
A)
In a first order reaction, the half-life is independent of the initial concentration of reactant.
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B)
A given piece of charcoal shows increase in its surface area in its powdered form.
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C)
In valence bond of\[{{H}_{2}},\]each electron spends its time around its own nucleus.
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D)
In valence bond of\[{{H}_{2}},\]both the electrons spend their time around both the nucleus.
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question_answer 91) The ground state electronic configuration of nitrogen is represented by
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 92) Which of the following sets of quantum numbers belong to highest energy?
A)
\[n=4,\text{ }l=0,\text{ }m=0\text{ }and\text{ s}=+\frac{1}{2}\]
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B)
\[n=3,\text{ }l=0,\text{ }m=0\text{ }and\text{ }s=+\frac{1}{2}\]
done
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C)
\[n=3,\text{ }l=1,\text{ }m=+1\text{ }and\text{ }s=+\frac{1}{2}\]
done
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D)
\[n=3,\text{ }l=2,\text{ }m=+1\text{ }and\text{ }s=+\frac{1}{2}\]
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question_answer 93) The correct order of increasing energy of atomic orbitals is
A)
\[5p<4f<6s<5d\]
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B)
\[5p<65<4p<5d\]
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C)
\[4f<5p<5d<6s\]
done
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D)
\[5p<5d<4f<6s\]
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question_answer 94) In a solid lattice, the cation has left a lattice site and is located at an interstitial position. The lattice defect is
A)
interstitial defect
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B)
vacancy defect
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C)
Frenkel defect
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D)
Schottky defect
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question_answer 95) Schottky defect in crystals is observed when.
A)
unequal number of cations and anions is missing from the crystal lattice.
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B)
equal number of cations and anions is missing from the crystal lattice.
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C)
an anion leaves its normal site and occupies an interstitial site.
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D)
density of the crystal is increased.
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question_answer 96) Which of the following represents the molarity of pure water?
A)
55.5
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B)
56.5
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C)
50.5
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D)
57.55
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question_answer 97) The set of quantum numbers not applicable for an electron in an atoms is
A)
\[n=1,l=1,{{m}_{l}}=1,{{m}_{s}}=+\frac{1}{2}\]
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B)
\[n=1,l=0,{{m}_{l}}=0,{{m}_{s}}=+\frac{1}{2}\]
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C)
\[n=2,l=1,{{m}_{l}}=1,{{m}_{s}}=-\frac{1}{2}\]
done
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D)
\[n=2,l=0,{{m}_{l}}=0,{{m}_{s}}=+\frac{1}{2}\]
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question_answer 98) The effect of temperature on reaction rate is shown by
A)
Kirchoff?s equation
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B)
Arrhenius equation
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C)
Gibb's-Helmholtz equation
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D)
Clasius-Clapeyron equation
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question_answer 99) Identify the incorrect statement among the following
A)
d-block elements show irregular and erratic chemical properties among themselves
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B)
La and Lu have partially filled d orbitals and no other partially filled orbitals
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C)
The chemistry of various lanthanoids is very similar
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D)
\[4f\]and\[5f\]orbitals are equally shielded
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question_answer 100) Which one of the following has a square planar geometry?
A)
\[{{[CoC{{l}_{4}}]}^{2-}}\]
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B)
\[{{[FeC{{l}_{4}}]}^{2-}}\]
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C)
\[{{[NiC{{l}_{4}}]}^{2-}}\]
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D)
\[{{[PtC{{l}_{4}}]}^{2-}}\]
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question_answer 101) Rabbit is
A)
carnivore
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B)
herbivore
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C)
Both and
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D)
sanguirore
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question_answer 102) Medusa is the reproductive organ of the organism
A)
Hydra
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B)
Aurelia
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C)
Obelia
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D)
Sea anemone
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question_answer 103) Which of the following organs is the blood bank?
A)
Heart
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B)
Lungs
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C)
Spleen
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D)
Liver
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question_answer 104) Cavity of coelenterates is called
A)
coelenteron
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B)
coelom
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C)
cavity
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D)
None of these
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question_answer 105) Allergy involves
A)
\[\text{IgE}\]
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B)
\[\text{IgF}\]
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C)
\[\text{IgA}\]
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D)
\[\text{IgM}\]
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question_answer 106) Frog's tadpode is
A)
uricotelic
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B)
ureotelic
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C)
ammonotelic
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D)
aminotelic
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question_answer 107) RBCs are nucleated in
A)
man
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B)
rabbit
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C)
frog
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D)
All of these
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question_answer 108) 2n -1 condition is called
A)
trisomy
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B)
monosomy
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C)
nullisomy
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D)
tetrasomy
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question_answer 109) Giant chromosomes are found inside
A)
nucleus of man
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B)
oocyres of frog
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C)
salivary glands of silk moth
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D)
salivary glands of Drosophila
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question_answer 110) All Bowman's capsules of the kidney are found in
A)
pelvis
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B)
medulla
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C)
cortex
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D)
None of these
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question_answer 111) Which of the following is the most primitive ancestor of man?
A)
Homo neanderthalensis
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B)
Homo habilis
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C)
Ramapithecus
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D)
Auscralopithecus
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question_answer 112) Rhabditi form is the larva of
A)
Hydra
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B)
Plaryhelmin the
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C)
Ascaris
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D)
Earthworm
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question_answer 113) Sex determination ratio in an organism is given\[\frac{X}{A}=1.5,\] then organism will be
A)
male
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B)
female
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C)
super female
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D)
intersex
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question_answer 114) Hepatitis-B is also called
A)
epidemic jaundice
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B)
serum jaundice
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C)
catarrhal jaundice
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D)
None of these
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question_answer 115) Hormone that promotes cell division, protein synthesis and bone growth is
A)
ADH
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B)
ACTH
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C)
PTH
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D)
GH
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question_answer 116) Persons with Klinefelter syndrome have chromosomes
A)
\[\text{XX}\]
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B)
\[\text{XY}\]
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C)
\[\text{XXY}\]
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D)
\[\text{XYY}\]
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question_answer 117) Theory of pangenesis was given by
A)
Darwin
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B)
Lamarck
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C)
Hugo de Vries
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D)
Oparin
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question_answer 118) Which of the following pairs is correct
A)
E coli?Entamoeba histolytica
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B)
Culex?Elephantiasis
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C)
Bed bug?Kala-azar
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D)
Plasmodium?Sleeping sickness
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question_answer 119) Organisms living in open sea are called
A)
planktons
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B)
nektons
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C)
pelagic
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D)
benthos
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question_answer 120) Bacterium, which is concerned with pertussis is
A)
Bordetella pertussis
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B)
Bacillus
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C)
Diplococcus
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D)
Mycobacterium tuberculum
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question_answer 121) Different colours of frog's skin are controlled by
A)
hormones
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B)
melanocytes
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C)
nervous system
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D)
Both and
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question_answer 122) Blastula of frog has
A)
blastopore
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B)
blastocoel
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C)
archenteron
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D)
gastropore
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question_answer 123) Carotene pigment is found in the cells of
A)
dermis
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B)
epidermis
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C)
adipose cell
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D)
Both and
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question_answer 124) Debove's membrane is a layer of
A)
muscular tissue
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B)
epithelial tissue
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C)
connective tissue
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D)
All of the above
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question_answer 125) Achilles tendon is associated with
A)
gluteus muscle
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B)
hamstring muscle
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C)
quadriceps muscle
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D)
gastrocnemius muscle
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question_answer 126) In the life cycle of mosquito, comma-shaped stage is
A)
larval stage
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B)
pupal stage
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C)
imago stage
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D)
None of these
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question_answer 127) Haemocoel is found in
A)
Hydra and Aurelia
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B)
Taenia and Ascaris
done
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C)
Cockroach and Pila
done
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D)
Balanoglossus and Herdmania
done
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question_answer 128) The group of an amniota includes
A)
reptiles and birds
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B)
birds and mammals
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C)
fishes and amphibians
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D)
reptiles and mammals
done
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question_answer 129) The excretory material of bony fish is
A)
urea
done
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B)
protein
done
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C)
ammonia
done
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D)
amino acid
done
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question_answer 130) Which of the following variations are temporary and have nothing to do with the or next generation?
A)
Hereditary variations
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B)
Discontinuous variations
done
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C)
Environmental variations
done
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D)
None of the above
done
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question_answer 131) The modem man differs from the apes in
A)
protruding eyes
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B)
spare body hair
done
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C)
wearing of clothes
done
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D)
arms shorter than legs
done
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question_answer 132) The leucocytes contain which of the following in large quantity ?
A)
Basophils
done
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B)
Neutrophils
done
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C)
Eosinophils
done
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D)
Monocytes
done
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question_answer 133) Which part of our body secretes the hormone secretin ?
A)
Ileum
done
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B)
Stomach
done
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C)
Duodenum
done
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D)
Oesophagus
done
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question_answer 134) During inspiration, the diaphragm
A)
expands
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B)
shows no change
done
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C)
contracts and flattens
done
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D)
relaxes to become dome-shaped
done
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question_answer 135) The oxygen toxicity is related with
A)
blood poisoning
done
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B)
collapsing of alveolar walls
done
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C)
failure of ventilation of lungs
done
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D)
Both and
done
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question_answer 136) Cardiac output is determined by
A)
heart rate
done
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B)
stroke volume
done
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C)
blood How
done
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D)
Both and
done
clear
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question_answer 137) The important function of lymph is to
A)
transport oxygen to the brain
done
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B)
transport carbon dioxide to the lungs
done
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C)
return RBCs to the lymph nodes
done
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D)
return in terstial fluid to the blood
done
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question_answer 138) The lining of intestine and kidneys in human is
A)
keratinized
done
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B)
brush bordered
done
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C)
ciliated
done
clear
D)
None of these
done
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question_answer 139) Which of the following is not vestigial in man?
A)
Tail vertebrae
done
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B)
Nails
done
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C)
Nictitating membrane
done
clear
D)
Vermiform appendix
done
clear
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question_answer 140) The chemical used in 'National Malaria Eradication Programme' is
A)
2,4-D
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B)
BHC
done
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C)
DDT
done
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D)
Pyrethroid
done
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question_answer 141) An eukaryotic gene contains two kinds of base sequences. Which of these plays an important role in protein synthesis ?
A)
Introns
done
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B)
Exons
done
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C)
Both and
done
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D)
None of these
done
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question_answer 142) The Leydig cells secrete
A)
oestrogen
done
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B)
testosterone
done
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C)
progesterone
done
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D)
corticosterone
done
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question_answer 143) The function of pineal body is to
A)
lighten the skin colours
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B)
control sexual behavior
done
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C)
regulate the period of puberty
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D)
All of the above
done
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question_answer 144) Which of the following nerve is purely motor nerve ?
A)
Vagus
done
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B)
Facial
done
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C)
Abducens
done
clear
D)
Trigeminal
done
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question_answer 145) Which of the following parts of a neuron is covered by fatty sheath ?
A)
Axon
done
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B)
Cyton
done
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C)
Dendrite
done
clear
D)
Node of Ranvier
done
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question_answer 146) The enzyme, which combines with non-protein part to form a functional enzyme known as
A)
co-enzyme
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B)
holoenzyme
done
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C)
apoenzyme
done
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D)
prosthetic group
done
clear
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question_answer 147) Which of the following enzymes digests protein in stomach?
A)
Trypsin
done
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B)
Pepsin
done
clear
C)
Crepsin
done
clear
D)
None of these
done
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question_answer 148) Passive food ingestion in Amoeba is known as
A)
import
done
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B)
invagination
done
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C)
circumfluence
done
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D)
circumvallation
done
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question_answer 149) Ecdysone is secreted from
A)
Insects
done
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B)
Trematoda
done
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C)
Nematoda
done
clear
D)
Polychaeta
done
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question_answer 150) The eggs of silk moth are
A)
haemolecithal
done
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B)
telolecithal
done
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C)
mesolecithal
done
clear
D)
centrolecithal
done
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question_answer 151) RNA and proteins are formed in
A)
\[{{\text{G}}_{\text{1}}}\text{-}\]phase
done
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B)
\[{{\text{G}}_{\text{2}}}\text{-}\]phase
done
clear
C)
S-phase
done
clear
D)
\[{{\text{G}}_{\text{o}}}\text{-}\]phase
done
clear
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question_answer 152) Growth promoting hormone is
A)
\[\text{IAA}\]
done
clear
B)
Gibberellin
done
clear
C)
2,4-D
done
clear
D)
ABA
done
clear
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question_answer 153) Which of the following genes show the heterozygous condition?
A)
Rr
done
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B)
RR
done
clear
C)
rr
done
clear
D)
None of these
done
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question_answer 154) Which of the following enzymes is responsible for formation of glucose from glucose-6-phosphate?
A)
Kinase
done
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B)
Aldolase
done
clear
C)
Dehydrogenase
done
clear
D)
Phosphatase
done
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question_answer 155) Binomial nomenclature was introduced by
A)
de Vries
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B)
Carolus Linnaeus
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C)
Pranti
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D)
Bentham and Hooker
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question_answer 156) Transduction in bacteria was discovered by
A)
Zinder and Lederberg
done
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B)
Wallace and Jacob
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C)
Herelle and Twort
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D)
Lederberg and Tatum
done
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question_answer 157) Protista includes
A)
unicellular eukaryotes
done
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B)
multi cellullar prokaryotes
done
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C)
unicellular prokaryotes
done
clear
D)
All of the above
done
clear
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question_answer 158) Bakanae disease is caused by
A)
fungus
done
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B)
alga
done
clear
C)
bacterium
done
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D)
virus
done
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question_answer 159) Fermentation is
A)
anaerobic respiration
done
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B)
incomplete oxidation of carbohydrate
done
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C)
complete oxidation of carbohydrate
done
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D)
None of the above
done
clear
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question_answer 160) Lichen is the association of
A)
Protista and algae
done
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B)
fungi and bacteria
done
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C)
Protista and fungi
done
clear
D)
algae and fungi
done
clear
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question_answer 161) A chemical substance produced by a micro-organism for inhibiting the growth of another is
A)
antibody
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B)
antibiotic
done
clear
C)
aflatoxin
done
clear
D)
antiallergic
done
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question_answer 162) Which of the following is/are essential fatty acids for man?
A)
Arachidonic acid
done
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B)
Linolenic acid
done
clear
C)
Linoleic acid
done
clear
D)
All of these
done
clear
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question_answer 163) Golgi apparatus is absent in
A)
higher plant
done
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B)
yeast
done
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C)
bacteria and blue-green algae
done
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D)
liver cells
done
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question_answer 164) Which of the following is the formula of chlorophyll\[\text{- }\!\!\alpha\!\!\text{ }\]?
A)
\[{{\text{C}}_{\text{55}}}{{\text{H}}_{\text{70}}}{{\text{O}}_{\text{2}}}{{\text{N}}_{\text{4}}}\text{Mg}\]
done
clear
B)
\[{{\text{C}}_{\text{55}}}{{\text{H}}_{\text{72}}}{{\text{O}}_{\text{5}}}{{\text{N}}_{\text{4}}}\text{Mg}\]
done
clear
C)
\[{{\text{C}}_{\text{55}}}{{\text{H}}_{\text{72}}}{{\text{O}}_{\text{2}}}{{\text{N}}_{\text{4}}}\text{Mg}\]
done
clear
D)
\[{{\text{C}}_{\text{55}}}{{\text{H}}_{\text{70}}}{{\text{O}}_{\text{5}}}{{\text{N}}_{\text{4}}}\text{Mg}\]
done
clear
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question_answer 165) The largest phase of meiosis\[\text{-I}\] is
A)
prophase\[\text{-I}\]
done
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B)
metaphase\[\text{-I}\]
done
clear
C)
anaphase\[\text{-I}\]
done
clear
D)
telophase\[\text{-I}\]
done
clear
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question_answer 166) The number of hydrogen bonds between adenine and thymine is
A)
two
done
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B)
three
done
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C)
four
done
clear
D)
eight
done
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question_answer 167) Insectivorous plant eats the insect for
A)
Na-K
done
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B)
nitrogen
done
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C)
chlorine
done
clear
D)
phosphorus
done
clear
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question_answer 168) Which of the following pairs are correctly matched?
A)
Central dogma?codon
done
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B)
Okazaki fragments?splicing
done
clear
C)
RNA polymerase?RNA primer
done
clear
D)
Restriction enzyme?Genetic engineering
done
clear
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question_answer 169) Which of the following is most resistant material in pollen grain?
A)
Sporopollenin
done
clear
B)
In tine
done
clear
C)
Cellulose
done
clear
D)
Cuticle
done
clear
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question_answer 170) CO is a pollutant because
A)
it reacts with \[{{C}_{3}}\]
done
clear
B)
it inhibits glycolysis
done
clear
C)
it reacts with haemoglobin
done
clear
D)
it makes nervous system inactive
done
clear
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question_answer 171) First stable product of \[{{C}_{3}}\]-plant is
A)
PGDP
done
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B)
PGA
done
clear
C)
oxalic acid
done
clear
D)
malate
done
clear
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question_answer 172) The floral formula Br or EBr \[\otimes \,{{K}_{(5)}}\,{{C}_{(5)}}\,{{A}_{o}}\,{{\overline{G}}_{(3)}}\] belongs to family
A)
Liliaceae
done
clear
B)
Cucurbitacea
done
clear
C)
Graminae
done
clear
D)
Solanaceae
done
clear
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question_answer 173) 'Golden rice' is a rice variety rich in
A)
\[\text{ }\!\!\beta\!\!\text{ -}\]carotene
done
clear
B)
lysine
done
clear
C)
vitamin-C
done
clear
D)
iron
done
clear
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question_answer 174) Which of the following ecological pyramids never occur in an inverted form?
A)
Pyramid of number
done
clear
B)
Pyramid of biomass
done
clear
C)
Pyramid of energy
done
clear
D)
Pyramid of species richness
done
clear
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question_answer 175) Velamen tissue is found in
A)
mesophytes
done
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B)
epiphytes
done
clear
C)
hydrophytes
done
clear
D)
xerophytes
done
clear
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question_answer 176) The edible pan of apple is
A)
mesocarp
done
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B)
endocarp
done
clear
C)
epicarp
done
clear
D)
fleshy thalamus
done
clear
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question_answer 177) Active transport
A)
releases energy
done
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B)
requires energy
done
clear
C)
produces ATP
done
clear
D)
produces a toxic substance
done
clear
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question_answer 178) Osmosis involves
A)
flow of water without a membrane
done
clear
B)
flow of solute from a semipermeable membrane
done
clear
C)
flow of solvent \[({{H}_{2}}O)\] through semi permeable membrane
done
clear
D)
None of the above
done
clear
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question_answer 179) Pollination by insect is
A)
emomophily
done
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B)
chiropterophr
done
clear
C)
anemophify
done
clear
D)
zoophily
done
clear
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question_answer 180) Virus multiplies in
A)
soil
done
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B)
dead tissue
done
clear
C)
living tissue
done
clear
D)
culture medium
done
clear
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question_answer 181) Which of the following techniques, other than microscopy is used for study of cell?
A)
Maceration
done
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B)
Plasmolysis
done
clear
C)
Chromatography
done
clear
D)
Autoradiography
done
clear
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question_answer 182) Robert Hooke used the term cell in the year
A)
1650
done
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B)
1665
done
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C)
1865
done
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D)
1960
done
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question_answer 183) Protein synthesis takes place in
A)
ribosomes
done
clear
B)
chloroplasts
done
clear
C)
mitochondria
done
clear
D)
Golgi bodies
done
clear
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question_answer 184) Replication of centriole occurs during
A)
interphase
done
clear
B)
prophase
done
clear
C)
late prophase
done
clear
D)
late telophase
done
clear
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question_answer 185) Which of the following is true about bryophytes?
A)
They are thalloid
done
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B)
They contain chloroplast
done
clear
C)
They possess archegonia
done
clear
D)
All of the above
done
clear
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question_answer 186) The kidney-shaped covering of sorus in Dryopteris's, is called
A)
placenta
done
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B)
ramentum
done
clear
C)
sporophyll
done
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D)
indusium
done
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question_answer 187) Replum is found in family
A)
Labiatae
done
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B)
Malvaceae
done
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C)
Compositae
done
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D)
Brassicaceae
done
clear
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question_answer 188) Which of the following is a wheat fruit?
A)
Achene
done
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B)
Cypsella
done
clear
C)
Caryopsis
done
clear
D)
Endosperm
done
clear
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question_answer 189) A gymnospermic leaf carries 16 chromosomes. The number of chromosomes in its endosperm is
A)
24
done
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B)
16
done
clear
C)
12
done
clear
D)
8
done
clear
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question_answer 190) Tyloses thickenings are seen in
A)
collenchyma
done
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B)
phloem cells
done
clear
C)
ray parenchyma only
done
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D)
ray parenchyma and xylem cells
done
clear
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question_answer 191) Ethyl alcohol is commercially manufactured from
A)
bajra
done
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B)
grapes
done
clear
C)
maize
done
clear
D)
sugarcane
done
clear
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question_answer 192) A hormone delaying senescence is
A)
auxin
done
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B)
cytokinin
done
clear
C)
ethylene
done
clear
D)
gibberellins
done
clear
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question_answer 193) What name has been assigned to the genus produced by a cross between cabbage and radish?
A)
Secale
done
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B)
Bursa pastoris
done
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C)
Lysogenicophyll
done
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D)
Raphanobrassica
done
clear
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question_answer 194) Morphine obtained from Opium is
A)
latex
done
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B)
pome
done
clear
C)
alkaloid
done
clear
D)
tannin
done
clear
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question_answer 195) The term heterosis was first coined by
A)
McCtintock
done
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B)
Power
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C)
Swaminathan
done
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D)
None of these
done
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question_answer 196) L-shaped chromosomes are also called
A)
acrocentric
done
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B)
telocentric
done
clear
C)
sub-metacentric
done
clear
D)
None of these
done
clear
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question_answer 197) Which of the following is/are grouped under phanerogams ?
A)
Angiospenns
done
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B)
Gymnosperms
done
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C)
Pteridophytes
done
clear
D)
Both and
done
clear
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question_answer 198) A bacterium divides after every 35 minutes. If culture containing \[{{10}^{5}}\] cells per mL is grown then cell concentration per mL after 175 minutes will be
A)
\[175\times {{10}^{5}}\]
done
clear
B)
\[125\times {{10}^{5}}\]
done
clear
C)
\[48\times {{10}^{5}}\]
done
clear
D)
\[32\times {{10}^{5}}\]
done
clear
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question_answer 199) Cladonia rangiferina is a/an
A)
algae
done
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B)
lichen
done
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C)
fungus
done
clear
D)
angiosperm
done
clear
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question_answer 200) Which of the following is an algal parasite?
A)
Volvox
done
clear
B)
Ulothrix
done
clear
C)
Porphyra
done
clear
D)
Cephaleuros
done
clear
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