question_answer 1) Mass equivalent to energy 931 MeV is
A)
\[6.02\times {{10}^{-27}}\,kg\]
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B)
\[1.66\times {{10}^{-27}}kg\]
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C)
\[16.66\,\times {{10}^{-27}}\,kg\]
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D)
\[6.02\,\times {{10}^{-27}}\,kg\]
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question_answer 2) Plutonium-decays with a half-life of 24000 years. If plutonium is stored for 72000 years, then the fraction of plutonium that remains, is
A)
\[\frac{1}{8}\]
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B)
\[\frac{1}{4}\]
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C)
\[\frac{1}{3}\]
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D)
\[\frac{1}{2}\]
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question_answer 3) If light travels a distance x in \[{{t}_{1}}\,\sec \] in air and 10 x distance in \[{{t}_{2}}\,\sec \] in a medium, the critical angle of the medium will be
A)
\[{{\tan }^{-1}}\left( \frac{{{t}_{1}}}{{{t}_{2}}} \right)\]
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B)
\[{{\sin }^{-1}}\left( \frac{{{t}_{1}}}{{{t}_{2}}} \right)\]
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C)
\[{{\sin }^{-1}}\left( \frac{10{{t}_{1}}}{{{t}_{2}}} \right)\]
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D)
\[{{\tan }^{-1}}\left( \frac{10{{t}_{1}}}{{{t}_{2}}} \right)\]
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question_answer 4) In an electromagnetic wave, the electric and magnetic fields are 100 V/m and 0.265 A/m. The maximum energy flow will be
A)
\[79\,W/{{m}^{2}}\]
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B)
\[13.2\,W/{{m}^{2}}\]
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C)
\[53.0\,\,W/{{m}^{2}}\]
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D)
\[26.5\,\,W/{{m}^{2}}\]
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question_answer 5) If a current of 10 A flows in one second through a coil and the induced emf is 10V, then the self-inductance of the coil will be
A)
1 H
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B)
2 H
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C)
4 H
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D)
\[\frac{2}{5}H\]
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question_answer 6) The frequency of an alternating voltage is 50 cycles/sec and its amplitude is120 V. Then its rms value will be
A)
84.9 V
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B)
42.4 V
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C)
56.5 V
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D)
75.5 V
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question_answer 7) Two waves of wavelength 50 cm and 51cm produce 12 beats per sec. The velocity of sound will be
A)
340 m/s
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B)
332 m/s
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C)
153 m/s
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D)
306 m/s
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question_answer 8) The wavelength of radiation emitted is\[{{\lambda }_{0}}\] when an electron in hydrogen atom jumps from 3rd to 2nd orbit. If in the hydrogen atom itself, the electron jumps from fourth orbit to second orbit, then wavelength of emtted radiation will be
A)
\[\frac{25}{16}{{\lambda }_{0}}\]
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B)
\[\frac{27}{20}{{\lambda }_{0}}\]
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C)
\[\frac{20}{27}{{\lambda }_{0}}\]
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D)
\[\frac{16}{25}{{\lambda }_{0}}\]
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question_answer 9) A thin circular ring of mass M and radius r is rotating about its axis with a constant angular velocity\[\omega \]. If two objects of mass m are attached gently to opposite ends of a diameter of ring, ring will now rotate with an angular velocity given by
A)
\[\frac{2\omega M}{(M-2m)}\]
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B)
\[\frac{(M-2m)}{M}\]
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C)
\[\frac{\omega M}{(M+2m)}\]
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D)
\[\frac{2\omega M}{(M-2m)}\]
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question_answer 10) A bomber plane moves horizontally with a speed of 500 m/s and a bomb released from it, strikes the ground in 10 sec. Angle at which it strikes the ground will be \[(g=10\,m/{{s}^{2}})\]
A)
\[{{\tan }^{-1}}\left( \frac{1}{5} \right)\]
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B)
\[\tan \left( \frac{1}{5} \right)\]
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C)
\[{{\tan }^{-1}}(1)\]
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D)
\[{{\tan }^{-1}}(5)\]
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question_answer 11) Black hole is
A)
super surface of atmosphere
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B)
ozone layer
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C)
super dense planetary material
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D)
none of these
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question_answer 12) The dual nature of light is exhibited by
A)
diffraction and photoelectric effect
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B)
photoelectric effect
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C)
refraction and interference
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D)
diffraction and reflection
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question_answer 13) The number of lenses in terrestrial telescope will be
A)
6
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B)
4
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C)
3
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D)
2
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question_answer 14) The direction of null points are on the equatorial line of a bar magnet, when the north pole of the magnet is pointing
A)
west
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B)
east
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C)
south
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D)
north
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question_answer 15) If the distance between the plates of parallel plate capacitor is halved and the dielectric constant is doubled, then its capacity will
A)
increase by 16 times
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B)
increase by 4 times
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C)
increase by 2 times
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D)
remain the same
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question_answer 16) A particle of mass m and charge q is placed at rest in a uniform electric field E and then released, the kinetic energy attained by the particle after moving a distance y, will be
A)
\[{{q}^{2}}Ey\]
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B)
\[qEy\]
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C)
\[q{{E}^{2}}y\]
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D)
\[qE{{y}^{2}}\]
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question_answer 17) Time period of a simple pendulum will be double, if we
A)
decrease the length 2 times
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B)
decrease the length 4 times
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C)
increase the length 2 times
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D)
increase the length 4 times
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question_answer 18) Two gases A and B having same pressure P, volume V and temperature T are mixed. If mixture has volume and temperature as V and T respectively, then the pressure of the mixture will be
A)
4 P
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B)
3 P
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C)
2 P
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D)
P
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question_answer 19) The maximum velocity and maximum acceleration of body moving in a simple harmonic motion are 2 m/s and \[4\,m/{{s}^{2}}\] respectively. Then the angular velocity will be
A)
4 rad/sec
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B)
3 rad/sec
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C)
2 rad /sec
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D)
8 rad/sec
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question_answer 20) The velocity v acquired by an electron starting from rest and moving through potential difference V is shown by which of the following the graphs ?
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 21) The major carriers of current in a p-type semi-conductor will be
A)
neutrons
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B)
protons
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C)
electrons
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D)
holes
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question_answer 22) The longest wavelength in Balmer series of hydrogen spectrum will be
A)
\[6557\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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B)
\[1216\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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C)
\[4800\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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D)
\[5600\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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question_answer 23) Myopia is corrected by
A)
cylindrical lens
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B)
bifocal lens
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C)
convex lens
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D)
concave lens
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question_answer 24) A moving coil produces an induced emf, this is in accordance with
A)
Amperes law
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B)
Coulomb law
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C)
Faradays law
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D)
Lenzs law
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question_answer 25) If a steady current of 4 amp maintained for 40 minutes, deposits 4.5 g of zinc at the cathode, then the chemical equivalent will be
A)
\[51\times {{10}^{-17}}g/C\]
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B)
\[28\times {{10}^{-6}}g/C\]
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C)
\[32\times {{10}^{-5}}g/C\]
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D)
\[47\times {{10}^{-5}}g/C\]
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question_answer 26) Two parallel wires of length 9 m each are separated by a distance 0.15 m. If they carry equal currents in the same direction and exerts a total force of \[30\times {{10}^{-7}}N\] on each other, then the value of current must be
A)
2.5 amp
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B)
3.5 amp
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C)
1.5 amp
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D)
0.5 amp
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question_answer 27) The frequency of tuning fork is 256 Hz. It will not resonate with a fork of frequency
A)
768 Hz
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B)
738 Hz
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C)
512 Hz
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D)
256 Hz
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question_answer 28) Antimony and bismuth are usually used in a thermocouple, because
A)
negative thermal emf is produced
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B)
constant thermal emf is produced
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C)
lower thermal emf is produced
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D)
higher thermal emf is produced
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question_answer 29) A person sitting in an open car moving at constant velocity throws a ball vertically into air, the ball falls
A)
exactly in the hand of thrower
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B)
outside the car
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C)
in the car ahead the person
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D)
in the car behind the person
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question_answer 30) The force on a rocket moving with a velocity of 300 m/s is 210 N. Then the rate of combustion of the fuel will be
A)
3.5 kg/sec
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B)
2.1 kg/sec
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C)
1.4 kg/sec
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D)
0.7 kg/sec
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question_answer 31) Ina p-type semi-conductor, germanium is dopped with
A)
gallium
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B)
boron
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C)
aluminum
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D)
all of these
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question_answer 32) The stopping potential, when a metal with work function 0.6 eV is illuminated with light of energy 2 eV will be
A)
1.4 V
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B)
2.8 eV
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C)
4.2 eV
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D)
0.7 V
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question_answer 33) Magnetic permeability is maximum for
A)
ferromagnetic substances
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B)
diamagnetic substances
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C)
paramagnetic substances
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D)
all of these
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question_answer 34)
The equivalent resistance between P and Q in given figure, will be:
A)
50\[\Omega \]
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B)
40\[\Omega \]
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C)
20 \[\Omega \]
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D)
10\[\Omega \]
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question_answer 35)
The current in the given circuit will be
A)
0.4 A
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B)
0.3 A
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C)
0. 2 A
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D)
0.1 A
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question_answer 36) Two charged spheres separated by a distance d exert some force F on each other. If they are immersed in a liquid of dielectric constant 2, then the force exerted by them, if all other conditions are same, is
A)
4 F
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B)
2 F
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C)
F
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D)
F/2
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question_answer 37) Two springs of spring constants \[{{k}_{1}}\] and \[{{k}_{2}}\] have equal maximum velocities. When executing simple harmonic motion, the ratio of their amplitudes (masses are equal) will be
A)
\[{{\left( \frac{{{k}_{2}}}{{{k}_{1}}} \right)}^{{1}/{2}\;}}\]
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B)
\[{{\left( \frac{{{k}_{1}}}{{{k}_{2}}} \right)}^{{1}/{2}\;}}\]
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C)
\[\frac{{{k}_{2}}}{{{k}_{1}}}\]
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D)
\[{{k}_{1}}{{k}_{2}}\]
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question_answer 38) Colour appears on a thin film of soap and on soap bubble due to:
A)
diffraction
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B)
interference
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C)
dispersion
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D)
refraction
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question_answer 39) If the earth loses its gravity, then for a body:
A)
weight becomes zero, but not the mass
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B)
mass becomes zero but not weight
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C)
neither mass nor weight is zero
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D)
both mass and weight are zero
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question_answer 40) The critical angle of a medium with respect to air is \[{{45}^{\text{o}}}\]. The refractive index of medium is
A)
1.41
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B)
1.2
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C)
1.5
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D)
2
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question_answer 41) When an electron is emitted from a nucleus, then effect on its neutron- proton ratio will
A)
remain same
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B)
increase
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C)
decrease
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D)
either (a) or (b)
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question_answer 42) The spectrum obtained from a sodium vapour lamp is an example of
A)
absorption spectrum
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B)
emission spectrum
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C)
continuous spectrum
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D)
band spectrum
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question_answer 43) Electromagnetic waves travel in a medium which has relative permeability 1.3 and relative permittivity 2.14. Then the speed of the electromagnetic wave in the medium will be
A)
\[13.6\,\times {{10}^{6}}\,m/s\]
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B)
\[1.8\times {{10}^{2}}\,m/s\]
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C)
\[3.6\,\times {{10}^{8}}\,m/s\]
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D)
\[1.8\times {{10}^{8}}\,m/s\]
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question_answer 44) A wire of length 0.5 m and carrying the current of 1.2 amp is placed in a uniform magnetic field of induction 2 tesla. If the magnetic field is perpendicular to the length of the wire, then the force on the wire will be
A)
1.2 N
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B)
4.8 N
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C)
2.4 N
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D)
1.8 N
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question_answer 45) The resistors of resistances 2\[\Omega \], 4\[\Omega \] 5\[\Omega \] are connected in parallel. The total resistance of the combination will be:
A)
\[\frac{20}{19}\Omega \]
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B)
\[\frac{19}{20}\Omega \]
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C)
\[\frac{10}{20}\Omega \]
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D)
\[\frac{29}{10}\Omega \]
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question_answer 46) Assertion: A larger dry cell has higher emf. Reason: The emf of a dry cell is proportional to its size.
A)
If both assertion and reason are true and reason is the correct explanation of assertion
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B)
If both assertion and reason are true but reason is not the correct explanation of assertion
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C)
If assertion is true but reason is false
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D)
If both assertion and reason are false
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question_answer 47) Assertion: A red object appears dark in the yellow light. Reason: The red colour is scattered less.
A)
If both assertion and reason are true and reason is the correct explanation of assertion
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B)
If both assertion and reason are true but reason is not the correct explanation of assertion
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C)
If assertion is true but reason is false
done
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D)
If both assertion and reason are false
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question_answer 48) Assertion: In a pressure cooker the water is brought to boil. The cooker is then removed from the stove. Now on removing the lid of the pressure cooker, the water starts boiling again. Reason: The impurities in water bring down its boiling point.
A)
If both assertion and reason are true and reason is the correct explanation of assertion
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B)
If both assertion and reason are true but reason is not the correct explanation of assertion
done
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C)
If assertion is true but reason is false
done
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D)
If both assertion and reason are false
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question_answer 49) Assertion: The true geographic north direction is found by using a compass needle. Reason: The magnetic meridian of the earth is along the axis of rotation of the earth.
A)
If both assertion and reason are true and reason is the correct explanation of assertion
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B)
If both assertion and reason are true but reason is not the correct explanation of assertion
done
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C)
If assertion is true but reason is false
done
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D)
If both assertion and reason are false
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question_answer 50) Assertion: There are very small sporadic changes in the speed of rotation of the earth. Reason: Shifting of large air masses in the earths atmosphere produce a change in the moment of inertia of the earth causing its speed of rotation to change.
A)
If both assertion and reason are true and reason is the correct explanation of assertion
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B)
If both assertion and reason are true but reason is not the correct explanation of assertion
done
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C)
If assertion is true but reason is false
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D)
If both assertion and reason are false
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question_answer 51) Fats, on alkaline hydrolysis, gives
A)
oils
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B)
soaps
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C)
detergents
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D)
glycol + acid
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question_answer 52) The rate of diffusion of hydrogen gas is
A)
1.4 times to He gas
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B)
same as He gas
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C)
5 times to He gas
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D)
2 times to He gas
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question_answer 53) If 0.15 g of a solute, dissolved is 15 g of solvent, is boiled at a temperature higher by \[0.216{{\,}^{\text{o}}}C,\] than that of the pure solvent. The molecular weight of the substances (molal elevation constant for the solvent is \[2.16{}^\circ C\]) is:
A)
100
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B)
10.1
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C)
10
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D)
1.001
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question_answer 54) Which of the following is a three dimensional silicate?
A)
Mica
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B)
Spodumene
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C)
Zeolite
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D)
None of these
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question_answer 55) Which type of bond is present in \[{{\text{H}}_{\text{2}}}\text{S}\] molecule:
A)
ionic bond
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B)
covalent bond
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C)
co-ordinate
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D)
all of three.
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question_answer 56) \[\text{MgC}{{\text{l}}_{\text{2}}}\text{6}{{\text{H}}_{\text{2}}}\text{O}\text{.}\]When heated gives:
A)
magnesium oxide
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B)
magnesium oxychloride
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C)
magnesium dichloride
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D)
magnesium chloride
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question_answer 57) A certain mass of gas occupies a volume of 300 c.c. at 27C and 620 mm pressure. The volume of this gas at \[\text{47}{{\,}^{\text{o}}}\text{C}\] and 640 mm pressure will be
A)
400 c.c.
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B)
510 c.c.
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C)
310 c.c.
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D)
350 c.c.
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question_answer 58) Which of the following is a polar compound?
A)
\[{{C}_{2}}{{H}_{6}}\]
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B)
\[CC{{l}_{4}}\]
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C)
\[HCl\]
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D)
\[C{{H}_{4}}\]
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question_answer 59) When sand is heated with hydrofluoric acid and a wet rod is brought in contact with vapours evolving, a white deposit is due to
A)
\[Si{{F}_{4}}\]
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B)
\[Si{{F}_{2}}\]
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C)
\[{{H}_{4}}Si{{O}_{4}}\]
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D)
none of these
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question_answer 60) Which of the following process is concerned with the formation of ethers?
A)
Wurtz synthesis
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B)
Williamson synthesis
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C)
Kolbe synthesis
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D)
Hofmann synthesis
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question_answer 61) Which of the following gives methane \[[C{{H}_{4}}]\]on hydrolysis?
A)
\[F{{e}_{3}}{{O}_{4}}\]
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B)
\[A{{l}_{2}}{{O}_{3}}\]
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C)
\[Ca{{C}_{2}}\]
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D)
\[A{{l}_{4}}{{C}_{3}}\]
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question_answer 62) The number of isomers in \[{{\text{C}}_{\text{4}}}{{\text{H}}_{\text{10}}}\text{O}\] are:
A)
7
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B)
8
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C)
6
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D)
5
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question_answer 63) In which of the following, the bond length between hybridized carbon atom and other carbon atom is minimum?
A)
Propyne
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B)
Propene
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C)
Butane
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D)
Propane
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question_answer 64) The amount of silver deposited by passing 241.25 coulomb of current through silver nitrate solution is
A)
2.7g
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B)
2.7mg
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C)
0.27g
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D)
0.54g
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question_answer 65) The shape of \[\text{I}{{\text{F}}_{7}}\]molecule is
A)
pentagonal bipyramidal
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B)
trigonal bipyramidal
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C)
tetrahedral
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D)
octahedral
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question_answer 66) Oxidation state of iron in \[\text{F}{{\text{e}}_{\text{3}}}{{\text{O}}_{\text{4}}}\]is
A)
\[\frac{8}{3}\]
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B)
\[\frac{3}{4}\]
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C)
\[\frac{3}{2}\]
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D)
\[\frac{1}{2}\]
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question_answer 67) Reduction of nitrobenzene, in the presence of Zn and KOH, gives
A)
hydrazobenzene
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B)
nitrobenzene
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C)
azobenzene
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D)
azoxybenzene
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question_answer 68) An orbital in which \[n=4\]and \[l=2\]is expressed by
A)
\[4\,s\]
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B)
\[4\,p\]
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C)
\[4d\]
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D)
\[sp\]
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question_answer 69) Hydrogen peroxide is prepared in the laboratory by
A)
adding \[\text{Mn}{{\text{O}}_{\text{2}}}\]to dil \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]
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B)
by passing \[\text{C}{{\text{O}}_{2}}\]into \[\text{Ba}{{\text{O}}_{\text{2}}}\]
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C)
by adding \[\text{N}{{\text{a}}_{\text{2}}}{{\text{O}}_{\text{2}}}\]to cold water
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D)
by adding \[\text{Pb}{{\text{O}}_{\text{2}}}\]into \[\text{KMn}{{\text{O}}_{\text{4}}}\]
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question_answer 70) The correct order of reactivity of halogens is
A)
\[F>Cl>Br>I\]
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B)
\[F<Cl>Br<I\]
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C)
\[F<Cl<Br<I\]
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D)
\[F<Cl<Br>I\]
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question_answer 71) Cyanohydrin of which of the following forms lactic acid?
A)
\[C{{H}_{3}}C{{H}_{2}}CHO\]
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B)
\[C{{H}_{3}}CHO\]
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C)
\[HCHO\]
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D)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
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question_answer 72) Which of the following compound reacts with chloroform and a base to form phenyl isocyanide?
A)
Phenol
done
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B)
Aniline
done
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C)
Benzene
done
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D)
Nitro benzene
done
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question_answer 73) If gas, at constant temperature and pressure expands then its
A)
entropy increases and then decreases
done
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B)
internal energy increases
done
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C)
internal energy remains the same
done
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D)
internal energy decreases
done
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View Answer play_arrow
question_answer 74) In a polar molecule, the ionic charge is \[4.8\times {{10}^{-10}}\] e. s. u. If the inter ionic distance is one \[\overset{\text{o}}{\mathop{\text{A}}}\,\]unit, then the dipole moment is
A)
41.8 debye
done
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B)
4.18 debye
done
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C)
4.8 debye
done
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D)
0.48 debye
done
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question_answer 75) The e. m. f. of a galvanic cell with electrode potentials of \[Z{{n}^{2+}}/Zn=-0.76\,V.\]and that of \[C{{u}^{2+}}/Cu=+\,0.34V,\]is
A)
+ 0.34V
done
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B)
+ 0.76V
done
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C)
-1.1 V
done
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D)
+1.1 V
done
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View Answer play_arrow
question_answer 76) Identify the transition element
A)
\[1{{s}^{2}},\text{ }2{{s}^{2}}\text{ }2{{p}^{6}},\text{ }3{{s}^{2}},\text{ }3{{p}^{6}},\text{ }4{{s}^{2}}\]
done
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B)
\[1{{s}^{2}},\text{ }2{{s}^{2}}\text{ }2{{p}^{6}},\text{ }3{{s}^{2}},\text{ }3{{p}^{6}}\text{ }3{{d}^{2}},\text{ }4{{s}^{2}}\]
done
clear
C)
\[1{{s}^{2}},\text{ }2{{s}^{2}}\text{ }2{{p}^{6}},\text{ }3{{s}^{2}},\text{ }3{{p}^{6}}\text{ }3{{d}^{10}},\text{ }4{{s}^{2}}\text{ }4{{p}^{2}}\]
done
clear
D)
\[1{{s}^{2}},\text{ }2{{s}^{2}}\text{ }2{{p}^{6}},\text{ }3{{s}^{2}}\text{ }3{{p}^{6}}\text{ }3{{d}^{10}},\text{ }4{{s}^{2}}\text{ }4{{p}^{1}}\]
done
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question_answer 77) Which of the following is more soluble in ammonia?
A)
\[\text{AgCl}\]
done
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B)
\[\text{AgBr}\]
done
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C)
\[\text{Agl}\]
done
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D)
none of these
done
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View Answer play_arrow
question_answer 78) An important product in the ozone depletion by chloroflurocarbons is :
A)
\[\text{C}{{\text{l}}_{\text{2}}}\]
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B)
\[\text{OCl}\]
done
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C)
\[\text{O}{{\text{F}}_{2}}\]
done
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D)
\[{{\text{O}}_{\text{2}}}{{\text{F}}_{\text{2}}}\]
done
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View Answer play_arrow
question_answer 79) Which of the following is heavy water?
A)
\[{{H}_{2}}{{O}^{18}}\]
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B)
\[{{H}_{2}}{{O}^{16}}\]
done
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C)
\[{{H}_{2}}{{O}_{3}}\]
done
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D)
\[{{D}_{2}}O\]
done
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View Answer play_arrow
question_answer 80) Propylene on hydrolysis -with sulphuric acid forms
A)
\[n-\]propyl alcohol
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B)
isopropyl alcohol
done
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C)
ethyl alcohol
done
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D)
butyl alcohol
done
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View Answer play_arrow
question_answer 81) The volume of oxygen liberated from 15ml of 20 volume \[{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}\]is
A)
250 ml
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B)
300 ml
done
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C)
150 ml
done
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D)
200 ml
done
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question_answer 82) Which of the following is purest form of iron?
A)
Steel
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B)
Wrought iron
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C)
Grey cast iron
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D)
White cast iron
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View Answer play_arrow
question_answer 83) Carborundum is
A)
\[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]
done
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B)
\[A{{l}_{2}}{{O}_{3}}.2{{H}_{2}}O\]
done
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C)
\[AlC{{l}_{3}}\]
done
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D)
\[\text{SiC}\]
done
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View Answer play_arrow
question_answer 84) The hydrolysis product of \[C{{H}_{3}}COC{{H}_{3}}+C{{H}_{3}}MgBr\]is
A)
\[n-\] butyl alcohol
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B)
tertiary butyl alcohol
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C)
secondary butyl alcohol
done
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D)
isopropyl alcohol
done
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View Answer play_arrow
question_answer 85) Molecular formula of chloropicrin is
A)
\[CHC{{l}_{3}}N{{O}_{2}}\]
done
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B)
\[CC{{l}_{3}}N{{O}_{3}}\]
done
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C)
\[CC{{l}_{2}}N{{O}_{2}}\]
done
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D)
\[CC{{l}_{3}}N{{O}_{2}}\]
done
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question_answer 86) Which of the following does not give a borax bead test?
A)
Ferrous salt
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B)
Chromium
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C)
Cobalt
done
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D)
Sodium
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question_answer 87) The inert gas abundantly found in atmosphere is
A)
Ae
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B)
Kr
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C)
He
done
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D)
Ar.
done
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question_answer 88) Which of the following electronic configuration is not possible?
A)
\[1{{s}^{2}},2{{s}^{2}}\]
done
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B)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}}\]
done
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C)
\[[Ar]\,3{{d}^{10}},4{{s}^{2}}4{{p}^{2}}\]
done
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D)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{2}},3{{s}^{1}}\]
done
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question_answer 89) Chloroform, on warming with Ag power, gives
A)
\[{{C}_{2}}{{H}_{6}}\]
done
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B)
\[{{C}_{2}}{{H}_{6}}\]
done
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C)
\[{{C}_{2}}{{H}_{4}}\]
done
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D)
\[{{C}_{2}}{{H}_{2}}\]
done
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View Answer play_arrow
question_answer 90) The shape of a molecule of \[\text{N}{{\text{H}}_{\text{3}}}\text{,}\]in which central atoms contains lone pair of electron, is
A)
tetrahedral
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B)
planar trigonal
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C)
square planar
done
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D)
pyramidal
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View Answer play_arrow
question_answer 91) Which is correct about ionization potential?
A)
It is independent of atomic radii
done
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B)
It increases with increase in atomic radii
done
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C)
It remains constant with increase in atomic radii
done
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D)
It decreases with increase in atomic radii
done
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View Answer play_arrow
question_answer 92) In the reaction \[HN{{O}_{3}}+{{P}_{4}}{{O}_{10}}\xrightarrow{{}}4HP{{O}_{3}}+x\] the product \[x\] is
A)
\[{{N}_{2}}{{O}_{3}}\]
done
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B)
\[{{N}_{2}}{{O}_{5}}\]
done
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C)
\[N{{O}_{2}}\]
done
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D)
\[{{H}_{2}}O\]
done
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View Answer play_arrow
question_answer 93) When lead nitrate is heated, it gives
A)
\[\text{N}{{\text{O}}_{\text{2}}}\]
done
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B)
\[\text{NO}\]
done
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C)
\[{{\text{N}}_{\text{2}}}{{\text{O}}_{\text{5}}}\]
done
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D)
\[{{\text{N}}_{\text{2}}}\text{O}\]
done
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View Answer play_arrow
question_answer 94) Equivalant weight of a bivalent metal is 37.2. The molecular weight of its chloride is
A)
412.2
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B)
216
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C)
145.4
done
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D)
108.2
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question_answer 95) Vinegar contains how much % of acetic acid?
A)
15-20%
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B)
90-100%
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C)
7-8%
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D)
10-12%
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View Answer play_arrow
question_answer 96) Assertion: \[\text{HCl}{{\text{O}}_{\text{4}}}\]is a stronger acid than\[\text{HCl}{{\text{O}}_{3}}.\] Reason: Oxidation state of \[\text{Cl}\] in \[\text{HCl}{{\text{O}}_{4}}\]is + 8 and in \[\text{HCl}{{\text{O}}_{\text{3}}}\text{+}\,\text{5}\text{.}\]
A)
If both assertion and reason are true and reason is not the correct explanation of assertion.
done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
done
clear
C)
If assertion is true but reason is false.
done
clear
D)
If both assertion and reason are false
done
clear
View Answer play_arrow
question_answer 97) Assertion: The free gaseous Cr atom has six unpaired electrons. Reason: Half-filled s orbital has greater stability.
A)
If both assertion and reason are true and reason is not the correct explanation of assertion.
done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
done
clear
C)
If assertion is true but reason is false.
done
clear
D)
If both assertion and reason are false
done
clear
View Answer play_arrow
question_answer 98) Assertion: The \[[Ni{{(en)}_{3}}C{{l}_{2}}]C{{l}_{2}}\] (en= ethylene diamine) has lower stability than \[[Ni{{(N{{H}_{3}})}_{6}}C{{l}_{2}}]\]. Reason: In \[[Ni{{(en)}_{3}}C{{l}_{2}}]\] the geometry of Ni is trigonal bipyramidal.
A)
If both assertion and reason are true and reason is not the correct explanation of assertion.
done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
done
clear
C)
If assertion is true but reason is false.
done
clear
D)
If both assertion and reason are false
done
clear
View Answer play_arrow
question_answer 99) Assertion: Sb (III) is not precipitated as sulphide when in its alkaline solution \[{{H}_{2}}S\] is passed. Reason: The concentration of \[{{S}^{2-}}\] ion in alkaline medium is inadequate for precipitation.
A)
If both assertion and reason are true and reason is not the correct explanation of assertion.
done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
done
clear
C)
If assertion is true but reason is false.
done
clear
D)
If both assertion and reason are false
done
clear
View Answer play_arrow
question_answer 100) Assertion: Nuclear binding energy per nucleon is in the order \[-_{4}^{9}Be>_{3}^{7}Li>_{2}^{4}He\]. Reason: Binding energy per nucleon increases linearly with difference in number of neutrons and protons.
A)
If both assertion and reason are true and reason is not the correct explanation of assertion.
done
clear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
done
clear
C)
If assertion is true but reason is false.
done
clear
D)
If both assertion and reason are false
done
clear
View Answer play_arrow
question_answer 101) Pond is an example of which ecosystem?
A)
Natural
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B)
Artificial
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C)
Forest
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D)
None of these
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question_answer 102) The ecological niche of population is a
A)
geographical area that it covers
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B)
place where it lives
done
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C)
set of conditions and resource it uses
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D)
none of these
done
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question_answer 103) Mendels dihybrid cross ratio is
A)
1 : 2 : 1
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B)
9 : 3 : 3 : 1
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C)
9 : 3 : 4
done
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D)
1 : 1
done
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question_answer 104) Parachute mechanism of seed dispersal occurs in
A)
sunflower
done
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B)
Calotropis
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C)
mango
done
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D)
apple
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question_answer 105) Hand of man, wing of bat and flipper of seal represents
A)
vestigeal organs
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B)
analogous organs
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C)
evolutionary organs
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D)
homologous organs
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question_answer 106) If an organism is crossed with homozygous recessive individual, it is called
A)
back cross
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B)
test cross
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C)
simple cross
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D)
monohybrid cross
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question_answer 107) Which is correct for the structure of cell wall of bacteria and fungi?
A)
Both are made up of cellulose
done
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B)
Both have mucopeptide
done
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C)
Both are made up of N-acetylglucosamine
done
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D)
None of these
done
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question_answer 108) Photorespiration takes place only in
A)
lysosomes of plant cell
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B)
green parts of the plant
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C)
mitochondria of plant cell
done
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D)
none of these
done
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View Answer play_arrow
question_answer 109) Nitrogen fixation means:
A)
\[{{N}_{2}}\] changes in \[NO_{3}^{-}\]
done
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B)
\[{{N}_{2}}\] changes in \[N{{H}_{3}}\]
done
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C)
\[NO_{2}^{-}\] changes into nitrates
done
clear
D)
none of these
done
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question_answer 110) In a pond ecosystem, benthos means
A)
primary consumers in the depth of a pond
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B)
virus
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C)
zooplankton on the water surface
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D)
bacteria
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question_answer 111) There are special proteins that help to open up DNA double helix in front of the replication fork. These protein are
A)
DNA ligase
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B)
DNA gyrase
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C)
DNA polymerase I
done
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D)
none of these
done
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question_answer 112) Peripatus is known as a connecting link, because it has the characters of both
A)
Aves and Fishes
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B)
Reptiles and Birds
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C)
Fishes and Amphibians
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D)
Arthropoda and Annelids
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question_answer 113) In which segment the clitellum is present in earthworm?
A)
16 segments
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B)
17-19 segments
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C)
14-16 segments
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D)
5-6 segments
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question_answer 114) Which of the following is absent in the mouth part of housefly?
A)
Labrum
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B)
Epipharynx
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C)
Mandibles
done
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D)
Maxillary palps
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question_answer 115) The colour of the body in earthworm is brown due to
A)
porphyrin
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B)
haemoglobin
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C)
blood
done
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D)
haemocyanin
done
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View Answer play_arrow
question_answer 116) The egg found in monotremata is
A)
microlecithal
done
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B)
mesolecithal
done
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C)
macrolecithal
done
clear
D)
none of these
done
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View Answer play_arrow
question_answer 117) Which hormone causes stunted growth in pea ?
A)
Gibberellic acid
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B)
Auxin
done
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C)
Cytokinin
done
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D)
Ethylene
done
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question_answer 118) In five kingdom classification of Whittaker, eukaryotes were assigned to
A)
3 of 5 kingdoms
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B)
2 of 5 kingdoms
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C)
4 of 5 kingdoms
done
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D)
all the 5 kingdoms
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question_answer 119) Which is responsible for recycling of material?
A)
Bacteria
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B)
Algae
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C)
Fungi
done
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D)
Virus
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question_answer 120) Which is following group of plant can grow in \[{{N}_{2}}\] deficient soil?
A)
Bryophytes
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B)
Algae
done
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C)
Insectivorous
done
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D)
Pteridophytes
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question_answer 121) Which region is responsible for origin of rhizoids in Funaria?
A)
Lateral region
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B)
Dorsal region
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C)
Ventral region
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D)
Basal region
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question_answer 122) Powdery mildews of crops are caused by
A)
basidiomycetes
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B)
phycomycetes
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C)
ascomycetes
done
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D)
eumycocetes
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question_answer 123) The codons, causing chain termination are
A)
AGT, TAG, UGA
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B)
UAG, UGA, UAA
done
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C)
TAG, TAA, TGA
done
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D)
GAT, AAT, AGT
done
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question_answer 124) Biological concept of species is mainly based on
A)
methods of reproduction only
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B)
reproductive isolation
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C)
morphological features only
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D)
none of these
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question_answer 125) The organism which carries a disease from one organism to another is called?
A)
Parasite
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B)
Host
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C)
Vector
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D)
None of these
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question_answer 126) The morphine obtained from opium is a
A)
tannin
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B)
alkaloids
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C)
gums
done
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D)
latex
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question_answer 127) Hybrid vigour is mostly due to
A)
superiority of all the genes
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B)
homozygosity of pure characters
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C)
heterozygosity
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D)
none of these
done
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question_answer 128) Flowers and lateral branches arise from the
A)
lateral buds
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B)
lentices
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C)
stomata
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D)
cuticle
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question_answer 129) Chiasma shows the sites of
A)
spindle formation
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B)
synapsis
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C)
crossing over
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D)
none of these
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question_answer 130) The process of cytokinesis refers to the division of
A)
nucleus
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B)
chromosomes
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C)
cytoplasm
done
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D)
none of these
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question_answer 131) Which of the following organelle does not contain RNA?
A)
Chromosome
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B)
Plasmalemma
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C)
Nucleolus
done
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D)
Ribosome
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question_answer 132) Arachidonic acid is
A)
non-essential fatty acid
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B)
essential fatty acid
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C)
olyunsaturated fatty acid
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D)
both b and c
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question_answer 133) Which of the following is polymerized to form proteins ?
A)
Protein
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B)
Carbohydrates
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C)
Amino acid
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D)
Muramic acid
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View Answer play_arrow
question_answer 134) All enzymes are basically
A)
carbohydrates
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B)
steroids
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C)
proteins
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D)
lipo-proteins
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question_answer 135) The nucleus is separated from surrounding cytoplasm by a nuclear membrane, which is
A)
single layered without pores
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B)
double layered with pores
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C)
single layered with pores
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D)
double layered without pores
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View Answer play_arrow
question_answer 136) Which organ has a single unit membrane?
A)
Lysosome
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B)
Mitochondria
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C)
Golgi body
done
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D)
Nucleolus
done
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View Answer play_arrow
question_answer 137) Which of the following animal has a notochord throughout its life?
A)
Fish
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B)
Bird
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C)
Snake
done
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D)
Amphioxus
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question_answer 138) Piercing and sucking mouth parts are found in
A)
mosquitoes
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B)
housefly
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C)
butterfly
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D)
ticks
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question_answer 139) When the number of organisms at successive levels are plotted they assume the shape of a pyramid. This is called the pyramid of
A)
Biomass
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B)
Number
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C)
Energy
done
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D)
None of these
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question_answer 140) Effect of pollution is on
A)
crossing over
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B)
ecological balance
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C)
linkage
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D)
mutation
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question_answer 141) Deforestation causes
A)
thermal pollution
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B)
noise pollution
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C)
soil erosion
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D)
none of these
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question_answer 142) A thin film of water is held by the soil particles under the influence of internal attractive force. It is called
A)
hygroscopic water
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B)
gravitational water
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C)
combined water
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D)
capillary water
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question_answer 143) Pneumatophores are usually present in
A)
Murrya
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B)
Eichhornia
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C)
Avicinnea
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D)
none of these
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question_answer 144) Balloon like outgrowth of parenchyma into the lumen of vessels, is known as
A)
tyloses
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B)
tunica
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C)
corpous
done
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D)
none of these
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question_answer 145) In some plants the style is shorter. But in some others, it is longer than the stamens This condition is called
A)
homogamy
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B)
homostyly
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C)
heterostyly
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D)
none of these
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question_answer 146) Interferon is
A)
bacteria
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B)
anti-viral
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C)
anti-algal
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D)
anti-bacterial
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question_answer 147) Bacterium have flagella with all over body is known as
A)
peritrichous
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B)
amphitrichous
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C)
monotrichous
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D)
none of these
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question_answer 148) Helotism is a term used for the symbiosis of
A)
algae and bacteria
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B)
algae and bryophytes
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C)
algae and pteridophytes
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D)
algae and fungi
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question_answer 149) In Dryopteris the opening mechanism of sporangium is effectively operated by
A)
stalk
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B)
stomium
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C)
annulus
done
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D)
none of these
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question_answer 150) In DNA, when AGCT occur, their association is as per which of the following pair ?
A)
AG-CT
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B)
AC-GT
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C)
AT-GC
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D)
All of these
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question_answer 151) Anus is absent in
A)
Unio
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B)
Pheretima
done
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C)
Periplaneta
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D)
Fasciolci
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question_answer 152) The vegetation of Rajasthan is
A)
xerophytic
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B)
deciduous
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C)
hydrophytic
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D)
arctic
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question_answer 153) In food chain, lion is a
A)
tertiary consumer
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B)
secondary consumer
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C)
primary consumer
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D)
none of these
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question_answer 154) Agricultural chemicals include
A)
promotors
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B)
pesticides
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C)
fertilizers
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D)
all of these
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question_answer 155) Biological equilibrium is found among the
A)
producers, consumers and decomposers
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B)
producers and consumers
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C)
producers and decomposers
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D)
none of these
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question_answer 156) Light energy in photosynthesis is utilized in
A)
\[{{H}_{2}}O\] converted into \[{{H}_{2}}\]
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B)
ADP converted into ATP
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C)
ATP converted into ADP
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D)
none of these
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question_answer 157) Nitrates are converted into \[{{N}_{2}}\] by
A)
\[{{N}_{2}}\] fixing bacteria
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B)
sulphur fixing bacteria
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C)
denitrifying bacteria
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D)
none of these
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question_answer 158) Genetic dwarfness can be overcome by treating with
A)
cytokinin
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B)
auxins
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C)
gibberellins
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D)
ethylene
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question_answer 159) The nephridia, in earthworm, are analogous to
A)
gills of prawn
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B)
trachea of insects
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C)
nematoblasts of Hydra
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D)
flame cells of Planaria
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question_answer 160) Which special feature present in slime moulds ?
A)
Capsule
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B)
Capillitium
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C)
Claters
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D)
None of these
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question_answer 161) Aggregate fruit develops from
A)
multicarpellary, apocarpous ovary
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B)
multicarpellary ovary
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C)
multicarpellary, syncarpous ovary
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D)
monocarpellary ovary
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question_answer 162) Respiratory quotient (R.Q.) during early stages of germination of castor seed is
A)
one
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B)
zero
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C)
more than one
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D)
less than one
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question_answer 163) In DNA helix, cytosine is paired with guanine by
A)
three hydrogen bonds
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B)
two hydrogen bonds
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C)
single hydrogen bond
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D)
covalent bond
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question_answer 164) High content of lysine is present in
A)
wheat
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B)
apple
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C)
maize
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D)
banana
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question_answer 165) In a pond ecosystem the pyramid of biomass is always
A)
irregular
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B)
inverted
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C)
upright
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D)
none of these
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question_answer 166) Members of phylum Porifera are
A)
exclusively marine animals
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B)
exclusively fresh water animals
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C)
mostly fresh water animals but few are marine animals
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D)
mostly marine animals but few are fresh water animals
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question_answer 167) Hydra recognises its prey by
A)
nematocyst
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B)
some special organs
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C)
chemical stimulus of prey
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D)
mechanical stimulus of prey
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question_answer 168) Shell of mollusc is produced by its
A)
radula
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B)
thorax
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C)
mantle
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D)
abdomen
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question_answer 169) Asymmetry in gastropoda is due to
A)
torsion
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B)
coiling
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C)
twisting
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D)
none of these
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question_answer 170) The joint of femur, with pelvic girdle, is
A)
hinge joint
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B)
pivot joint
done
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C)
non-movable joint
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D)
ball and socket joint
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question_answer 171) Which of the following is the part of mid brain of rabbit?
A)
Diencephalon
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B)
Cerebrum
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C)
Corpora quadrigemina
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D)
None of these
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question_answer 172) Which of the following is a motor nerve?
A)
Auditory
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B)
Abducens
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C)
Optic nerve
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D)
Trigeminal nerve
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question_answer 173) Which of the following is called emergency gland of the body?
A)
Testis
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B)
Thymus
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C)
Adrenal
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D)
Pituitary
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question_answer 174) Which of the following is both exocrine and endocrine gland
A)
Liver
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B)
Pancreas
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C)
Thyroid
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D)
Adrenal
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question_answer 175) Corpus luteum is developed from
A)
oocyte
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B)
nephrostome
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C)
graffian follicle
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D)
none of these
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question_answer 176) In most mammals, the testes are located in scrotal sac for
A)
spermatogenesis
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B)
sex differentiation
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C)
more space to visceral organs
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D)
independent functioning of kidney
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question_answer 177) Third cleavage of frogs development is
A)
equatorial
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B)
vertical
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C)
latitudinal
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D)
none of these
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question_answer 178) Which of the following is a transparent tissue?
A)
Tendon
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B)
Hyaline cartilage
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C)
Fibrous cartilage
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D)
All of these
done
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question_answer 179) Which of the following are not true cells in the blood
A)
Platelets
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B)
Monocytes
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C)
Neutrophils
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D)
Basophils
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question_answer 180) Vitamin D is synthesized in skin, by the action of sunlight on
A)
cholesterol
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B)
seven-hydroxy-cholesterol
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C)
cephanocholesterol
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D)
all of these
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question_answer 181) In which animal, diaphragm has no role in respiration?
A)
Frog
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B)
Rat
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C)
Camel
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D)
Rabbit
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question_answer 182) The area of inner surface of bronchiole is
A)
\[1\,{{m}^{2}}\]
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B)
\[10\,\,{{m}^{2}}\]
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C)
\[100\,\,{{m}^{2}}\]
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D)
\[1000\,\,{{m}^{2}}\]
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question_answer 183) During the process of blood coagulation, vitamin K helps in
A)
the formation of prothrombin
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B)
the formation of thromboplastin
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C)
the conversion of fibrinogen into fibrin
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D)
the conversion of prothrombin into thrombin
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question_answer 184) The heart muscles are
A)
striated and involuntary
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B)
striated and voluntary
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C)
smooth and involuntary
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D)
non-striated and involuntary
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question_answer 185) Which of the following amino acids is present in ornithine cycle?
A)
Valine and systine
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B)
Arginin and citrulline
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C)
(c) Glycine and methionine
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D)
(b) None of these
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question_answer 186) The joint of radio-ulna with the upper arm is
A)
hinge joint
done
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B)
pivot joint
done
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C)
socket joint
done
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D)
none of these
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question_answer 187) Haversian canals are present in
A)
bone marrow
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B)
hyaline cartilage
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C)
bone matrix
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D)
calcified cartilage
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question_answer 188) Law of segregation of gametes was proposed by
A)
Mendel
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B)
de Vries
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C)
Robert Hook
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D)
Huxley
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question_answer 189) Which of the following evidences does not favour the Lamarckian concept of inheritance of acquired characters?
A)
Absence of limbs in snakes
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B)
Presence of webbed toes in aquatic birds
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C)
Melanization in peppered moth
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clear
D)
Lack of pigment in cave-dwelling animals
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question_answer 190) The most important example of point mutation is found in a disease called
A)
thalassemia
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B)
night blindness
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C)
Downs syndrome
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D)
sickle cell anaemia
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question_answer 191) Assertion: Agricultural output increased several times after introduction of DDT. Reason: DDT was the first insecticide used on a wide scale.
A)
A
done
clear
B)
B
done
clear
C)
C
done
clear
D)
D
done
clear
E)
E
done
clear
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question_answer 192) Assertion: Diabetes insipidus is marked by excessive urination and too much thirst of water. Reason: Anti-diuretic hormone (ADH) is secreted by the posterior lobe of pituitary gland.
A)
A
done
clear
B)
B
done
clear
C)
C
done
clear
D)
D
done
clear
E)
E
done
clear
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question_answer 193) Assertion: Coacervates are believed to be the precursors of life. Reason: Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.
A)
A
done
clear
B)
B
done
clear
C)
C
done
clear
D)
D
done
clear
E)
E
done
clear
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question_answer 194) Assertion: Tapeworm roundworm and pinworm are endoparasites of human intestine. Reason: Improperly cooked food is the source of intestinal infections.
A)
A
done
clear
B)
B
done
clear
C)
C
done
clear
D)
D
done
clear
E)
E
done
clear
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question_answer 195) Assertion: Fish meal is a rich source of protein for cattle and poultry. Reason: Fish meal is produced from non-edible parts of fishes like fins, tail etc.
A)
A
done
clear
B)
B
done
clear
C)
C
done
clear
D)
D
done
clear
E)
E
done
clear
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question_answer 196) Assertion: Animals adopt different strategies to survive in hostile environment. Reason: Praying mantis is green in colour which merges with plant foliage.
A)
A
done
clear
B)
B
done
clear
C)
C
done
clear
D)
D
done
clear
E)
E
done
clear
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question_answer 197) Assertion: Among the primates, chimpanzee is the closest relative of the present day humans. Reason: The banding pattern in the autosome numbers 3 and 6 of man and chimpanzee is remarkably similar.
A)
A
done
clear
B)
B
done
clear
C)
C
done
clear
D)
D
done
clear
E)
E
done
clear
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question_answer 198) Assertion: Dope test is used to estimate the level of blood alcohol by analyzing the breath of persons drinking alcohol. Reason: A drunken person usually feels tense and less talkative.
A)
A
done
clear
B)
B
done
clear
C)
C
done
clear
D)
D
done
clear
E)
E
done
clear
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question_answer 199) Assertion: The honey bee queen copulates only ones in her life time. Reason: The honey bee queen can lay fertilized as well as unfertilized eggs.
A)
A
done
clear
B)
B
done
clear
C)
C
done
clear
D)
D
done
clear
E)
E
done
clear
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question_answer 200) Assertion: From evolutionary point of view, human gestation period is believed to be shortening. Reason: One major evolutionary trend in humans has been the larger head undergoing relatively faster growth rate in the foetal stage.
A)
A
done
clear
B)
B
done
clear
C)
C
done
clear
D)
D
done
clear
E)
E
done
clear
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