question_answer 1) If a current of 500 mA produces a deflection of \[30{}^\circ \] in a tangent galvanometer, then the current that produces a deflection of \[60{}^\circ \]is
A)
1.5 A
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B)
1 A
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C)
500 mA
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D)
866 mA
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E)
2A
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question_answer 2) A wire of length 50 cm moves with a velocity of 300 m/min, perpendicular to a magnetic field. If the emf induced in the wire is 2 V, the magnitude of the field in tesia is
A)
2
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B)
5
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C)
0.4
done
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D)
2.5
done
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E)
0.8
done
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question_answer 3) Whenever a magnet is moved either towards or away from a conducting coil, an emf is induced, the magnitude of which is independent of
A)
the strength of the magnetic field
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B)
the speed with which the magnet is moved
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C)
the number of turns is the coil
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D)
the resistance of the coil
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E)
the area of cross-section of the coil
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question_answer 4) An electromagnetic radiation has an energy of 13.2 keV. Then the radiation belongs to the region of
A)
visible light
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B)
ultraviolet
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C)
infrared
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D)
X-ray
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E)
microwave
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question_answer 5) The photosensitive surface is receiving light of wavelength 5000\[\overset{\text{o}}{\mathop{\text{A}}}\,\] at the rate of \[{{10}^{-8}}J\text{/}s.\] The number of photons received per second is
A)
\[2.5\times {{10}^{10}}\]
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B)
\[2.5\times {{10}^{11}}\]
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C)
\[2.5\times {{10}^{12}}\]
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D)
\[2.5\times {{10}^{9}}\]
done
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E)
\[2.5\times {{10}^{13}}\]
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question_answer 6) The nucleus\[{}_{6}{{C}_{12}}\]absorbs an energetic neutron and emits a beta particle\[(\beta )\]. The resulting nucleus is
A)
\[{}_{7}{{N}^{14}}\]
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B)
\[{}_{7}{{N}^{13}}\]
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C)
\[{}_{5}{{B}^{13}}\]
done
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D)
\[{}_{6}{{C}^{13}}\]
done
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E)
\[{}_{5}{{B}^{12}}\]
done
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question_answer 7) Select the true statement from the following. Nuclear force is
A)
strong, I short range and charge independent force
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B)
charge independent, attractive and long range force
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C)
strong, charge dependent and short range attractive force
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D)
long range, charge dependent and attractive force
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E)
charge independent, short range and strong repulsive force
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question_answer 8) In CE mode, the input characteristics of a transistor is the variation of
A)
\[{{I}_{B}}\] against \[{{V}_{BE}}\] at constant \[{{V}_{CE}}\]
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B)
\[{{I}_{C}}\] against \[{{V}_{CE}}\] at constant \[{{V}_{BE}}\]
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C)
\[{{I}_{B}}\] against \[{{I}_{C}}\]
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D)
\[{{I}_{E}}\]against \[{{I}_{C}}\]
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E)
\[{{I}_{C}}\] against \[{{V}_{CE}}\] at constant\[{{I}_{B}}\]
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question_answer 9) The electrical conductivity of an intrinsic semiconductor at OK is
A)
less than that of an insulator
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B)
is equal to zero
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C)
is equal to infinity
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D)
more than that of an insulator
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E)
is equal to that of a metal
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question_answer 10) The principle used for the transmission of light signals through the optical fibre is
A)
reflection
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B)
refraction
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C)
interference
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D)
diffraction
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E)
total internal reflection
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question_answer 11) The sky wave propagation is suitable for radio-waves of frequency
A)
upto 2 MHz
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B)
from 2 MHz to 20 MHz
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C)
from 2 MHz to 30 MHz
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D)
from 2 MHz to 50 MHz
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E)
from 2 MHz to 80 MHz
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question_answer 12) If voltage \[V=\left( 100\pm 5 \right)\] volt and current \[1=\left( 10\pm 0.2 \right)A,\] the percentage error in resistance R is
A)
5.2%
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B)
25%
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C)
7%
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D)
10%
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E)
2.5%
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question_answer 13) A body starting from rest moves with uniform acceleration. The distance covered by the body in time t is proportional to
A)
\[\sqrt{t}\]
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B)
\[{{t}^{3/2}}\]
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C)
\[{{t}^{2/3}}\]
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D)
\[{{t}^{3}}\]
done
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E)
\[{{t}^{2}}\]
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question_answer 14) A pendulum of length 1 m is released from\[\theta =60{}^\circ \]. The rate of change of speed of the bob at \[\theta =30{}^\circ \] is \[(g=10\,m{{s}^{-2}})\]
A)
\[10\,m{{s}^{-2}}\]
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B)
\[7.5\,m{{s}^{-2}}\]
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C)
\[5\,m{{s}^{-2}}\]
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D)
\[5\sqrt{3}\,m{{s}^{-2}}\]
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E)
\[2.5\,m{{s}^{-2}}\]
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question_answer 15) A body constrained to move in the y-direction is subjected to a force\[\overrightarrow{F}=2\hat{i}+15\hat{j}+6\hat{k}\,N.\] The work done by this force in moving the body through a distance of 10 m along y-axis is
A)
100 J
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B)
150 J
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C)
120 J
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D)
200 J
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E)
50 J
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question_answer 16) A particle is projected with a speed v at \[45{}^\circ \] with the horizontal. The magnitude of angular momentum of the projectile about the point of projection when the particle is at its maximum height h is
A)
zero
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B)
\[\frac{mv{{h}^{2}}}{\sqrt{2}}\]
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C)
\[\frac{m{{v}^{2}}h}{2}\]
done
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D)
\[\frac{mv{{h}^{3}}}{\sqrt{2}}\]
done
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E)
\[\frac{mvh}{\sqrt{2}}\]
done
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question_answer 17) A gun fires bullets each of mass 1 g with velocity of 10\[m{{s}^{-1}}\]by exerting a constant force of 5 g weight. Then the number of bullets fired per second is (Take g = 10\[m{{s}^{-1}}\])
A)
50
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B)
5
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C)
10
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D)
25
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E)
15
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question_answer 18) Two equal forces are acting at a point with an angle of \[60{}^\circ \] between them. If the resultant force is equal to \[40\sqrt{3}N,\] the magnitude of each force is
A)
40 N
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B)
20 N
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C)
80 N
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D)
30 N
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E)
10 N
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question_answer 19) A man pushes against a wall but fails to move it. He does
A)
negative work
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B)
positive but not maximum work
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C)
maximum positive work
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D)
no work at all
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E)
maximum negative work
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question_answer 20) When a bullet is fired at a target, its velocity decreases by half after penetrating 30 cm into it. The additional thickness it will penetrate before coming to rest is
A)
30 cm
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B)
40 cm
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C)
10 cm
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D)
50 cm
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E)
20 cm
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question_answer 21) The moment of inertia of a flywheel having kinetic energy 360 J and angular speed of 20 rad/s is
A)
\[18\,kg\text{-}{{m}^{2}}\]
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B)
\[1.8\,kg\text{-}{{m}^{2}}\]
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C)
\[2.5\,kg\text{-}{{m}^{2}}\]
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D)
\[9\,kg\text{-}{{m}^{2}}\]
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E)
\[0.9\,kg\text{-}{{m}^{2}}\]
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question_answer 22) Pour point masses P, Q, R and S with respective masses 1 kg, 1 kg, 2 kg and 2 kg form the comers of a square of side a. The centre of mass of the system will be farthest from
A)
P only
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B)
R and S
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C)
R only
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D)
P and Q
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E)
P and R
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question_answer 23) The escape velocity from the earth is 11.2 km/s. The escape velocity from a planet having twice the radius and the same mean density is (in km/s)
A)
11.2
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B)
5.6
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C)
1.5
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D)
22.4
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E)
33.6
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question_answer 24) The excess of pressure inside the first soap bubble is three times that inside the second bubble. The ratio of volume of the first to that of the second bubble is
A)
1 : 3
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B)
1 : 9
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C)
1 : 27
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D)
9 : 1
done
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E)
27 : 1
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question_answer 25) Bernoullis principle is based on the law of conservation of
A)
mass
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B)
momentum
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C)
pressure
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D)
energy
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E)
volume
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question_answer 26)
A body of mass 8 kg is suspended through two light springs X and Y connected in series as shown in figure. The readings in X and Y respectively are
A)
8 kg, zero
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B)
zero, 8 kg
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C)
6 kg, 2 kg
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D)
2 kg, 6 kg
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E)
8 kg, 8 kg
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question_answer 27) A body cools from \[62{}^\circ \,C\] to \[50{}^\circ C\] in 10 min and to \[42{}^\circ C\] in the next 10 min. The temperature of the surrounding is
A)
\[16{}^\circ C\]
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B)
\[26{}^\circ C\]
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C)
\[36{}^\circ C\]
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D)
\[21{}^\circ C\]
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E)
\[31{}^\circ C\]
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question_answer 28) At what temperature the kinetic energy of a gas molecule is half of the value at\[27{}^\circ C\]?
A)
\[13.5\,{}^\circ C\]
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B)
\[150{}^\circ C\]
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C)
\[75\,K\]
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D)
\[13.5\,K\]
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E)
\[-123{}^\circ C\]
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question_answer 29) A black body emits radiations of maximum intensity for the wavelength of 5000\[\overset{\text{o}}{\mathop{\text{A}}}\,\] when the temperature of the body is \[1227\,{}^\circ C\]. If the temperature of the body is increased by \[1000{}^\circ C,\] the maximum intensity would be observed at
A)
1000 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
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B)
2000 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
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C)
5000 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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D)
4000 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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E)
3000 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
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question_answer 30) A body of mass 20 g connected to spring of constant k executes simple harmonic motion with a frequency of\[\left( \frac{5}{\pi } \right)Hz.\]. The value of spring constant is
A)
\[4\,N\text{-}{{m}^{-1}}\]
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B)
\[3\,N\text{-}{{m}^{-1}}\]
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C)
\[2\,N\text{-}{{m}^{-1}}\]
done
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D)
\[5\,N\text{-}{{m}^{-1}}\]
done
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E)
\[2.5\,N\text{-}{{m}^{-1}}\]
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question_answer 31) Two waves are given by \[{{y}_{1}}=\cos \,(4t-2x)\] and\[{{y}_{2}}=\sin \left( 4t-2x+\frac{\pi }{4} \right)\]. The phase difference between the two waves is
A)
\[\frac{\pi }{4}\]
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B)
\[-\frac{\pi }{4}\]
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C)
\[\frac{3\pi }{4}\]
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D)
\[\frac{\pi }{2}\]
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E)
\[\frac{3\pi }{2}\]
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question_answer 32)
In the adjoining figure the equivalent resistance between A and B is
A)
50
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B)
80
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C)
2.50
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D)
6.80
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E)
7.80
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question_answer 33) In a Wheatstones network P = 2\[\Omega \], Q = 2\[\Omega \], R = 2\[\Omega \] and S = 3\[\Omega \]. The resistance with which S is to be shunted in order that the bridge may be balanced is
A)
1\[\Omega \]
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B)
2\[\Omega \]
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C)
4\[\Omega \]
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D)
6\[\Omega \]
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E)
8\[\Omega \]
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question_answer 34) A proton with energy of 2 MeV enters a uniform magnetic field of 2.5 T normally. The magnetic force on the proton is (Take mass of proton to be \[1.6\times {{10}^{-27}}kg\])
A)
\[3\times {{10}^{-12}}N\]
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B)
\[8\times {{10}^{-10}}N\]
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C)
\[8\times {{10}^{-12}}N\]
done
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D)
\[2\times {{10}^{-10}}N\]
done
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E)
\[3\times {{10}^{-10}}N\]
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question_answer 35) Two forces of 5N and 12 N. simultaneously act on a particle. The net force on the particle is
A)
17 N only
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B)
12 N
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C)
13 N
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D)
between 7N and 17 N
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E)
7 N only
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question_answer 36) If the acceleration due to gravity on the surface of earth of radius R is g, the gain in potential energy of a body of mass m raised from the surface to a height R is
A)
\[4\,mgR\]
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B)
\[mgR\text{/}4\]
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C)
\[mg\,R\text{/2}\]
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D)
\[2mgR\]
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E)
\[mgR\]
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question_answer 37) The core of a transformer is laminated to
A)
increase the magnetic flux linked
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B)
reduce the power loss due to eddy current
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C)
reduce the flux leakage loss
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D)
reduce copper loss
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E)
reduce hysteresis loss
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question_answer 38) Two stretched strings of same material are vibrating under same tension in fundamental mode. The ratio of their frequencies is 1: 2 and ratio of the length of the vibrating segments is 1 : 4. Then the ratio of the radii of the strings is
A)
2 : 1
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B)
4 : 1
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C)
3 : 2
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D)
8 : 1
done
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E)
4 : 5
done
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question_answer 39) Blood is flowing at the rate of 200 \[c{{m}^{3}}{{s}^{-1}}\] in a capillary of cross-sectional area 0.5 m. The velocity of flow (in mm\[{{s}^{-1}}\]) is
A)
0.1
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B)
0.2
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C)
0.3
done
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D)
0.4
done
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E)
0.5
done
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question_answer 40) The electrical conductivity of a semiconductor increases when an electromagnetic radiation of wavelength shorter than 1125 nm is incident on it. The band gap of the semiconductor is
A)
0.9 eV
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B)
0.7 eV
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C)
0.5 eV
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D)
0.8 eV
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E)
1.1 eV
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question_answer 41) 4 cells each of emf 2V and internal resistance of 1\[\Omega \] are connected in parallel to a load resistor of 2\[\Omega \]. Then the current through the load resistor is
A)
2 A
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B)
1.5 A
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C)
1A
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D)
0.888 A
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E)
0.75 A
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question_answer 42) A thermos flask made of stainless steel contains several tiny lead shots. If the flask is quickly shaken up and down several times, the temperature of lead shots
A)
increases by adiabatic process
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B)
increases by isothermal process
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C)
decreases by adiabatic process
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D)
remains same
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E)
first decreases and then increases
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question_answer 43) The slope of the kinetic energy versus position vector gives the rate of change of
A)
momentum
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B)
velocity
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C)
force
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D)
power
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E)
work
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question_answer 44) The total electrical flux leaving a spherical surface of radius r, in enclosing an electric dipole of charge q is
A)
zero
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B)
\[\frac{q}{{{\varepsilon }_{0}}}\]
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C)
\[\frac{8\pi {{r}^{2}}q}{{{\varepsilon }_{0}}}\]
done
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D)
\[\frac{2q}{{{\varepsilon }_{0}}}\]
done
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E)
\[\frac{4\pi {{r}^{2}}q}{{{\varepsilon }_{0}}}\]
done
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question_answer 45) A current \[I=100\,\sin \,(100\pi t)A\] is passed in coil, which induces a maximum emf 5\[\pi \]volt in second coil. The mutual inductance between the coils is
A)
10 mH
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B)
15 mH
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C)
25 mH
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D)
20 mH
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E)
5 mH
done
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question_answer 46) What is the effect on the time period of a simple pendulum, if the mass of the bob is doubled?
A)
Halved
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B)
Doubled
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C)
Becomes eight times
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D)
Becomes zero
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E)
No effect
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question_answer 47) The half-life of thorium X is 3.64 days. After how many days will 0.1 of the mass of a sample of the substance remain undecayed?
A)
12.1 days
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B)
24 days
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C)
60 days
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D)
4 days
done
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E)
14 days
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question_answer 48) Moment of inertia of a body does not depend upon its
A)
mass
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B)
axis of rotation
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C)
shape
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D)
distribution of mass
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E)
angular velocity
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question_answer 49) In terms of Bohr radius \[{{a}_{0}}\] the radius of second Bohr orbit of hydrogen atom is given by
A)
\[4\,{{a}_{0}}\]
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B)
\[8\,{{a}_{0}}\]
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C)
\[\sqrt{2}\,{{a}_{0}}\]
done
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D)
\[2\,{{a}_{0}}\]
done
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E)
\[\sqrt{4}\,{{a}_{0}}\]
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question_answer 50) What is the escape velocity for a body on it surface of a planet on which the accelerant due to gravity is \[{{(3.1)}^{2}}m{{s}^{-2}}\]and whose radius is 8100 km?
A)
\[2790\,km\text{-}{{s}^{-1}}\]
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B)
\[27.9\,km\text{-}{{s}^{-1}}\]
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C)
\[\frac{27.9}{\sqrt{5}}\,km\text{-}{{s}^{-1}}\]
done
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D)
\[27.9\sqrt{5}\,km\text{-}{{s}^{-1}}\]
done
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E)
\[\frac{2.79}{\sqrt{5}}km\text{-}{{s}^{-1}}\]
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question_answer 51) Which one of the following is not a derived unit?
A)
Frequency
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B)
Plancks constant
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C)
Gravitational constant
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D)
Charge
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E)
Electric current
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question_answer 52) The diagonals of a parallelogram represented by vectors\[\overrightarrow{P}=5\hat{i}-4\hat{j}+3\hat{k}\]and \[\overrightarrow{q}=3\hat{i}+2\hat{j}-\hat{k}.\] Then the area of the parallelogram is
A)
\[\sqrt{171}\,\text{unit}\]
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B)
\[\sqrt{72}\,\text{unit}\]
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C)
\[171\,\,\text{unit}\]
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D)
\[\sqrt{191}\,\,\text{unit}\]
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E)
None of the above
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question_answer 53) The correct arrangement of colours in the descending order of their wavelength is
A)
yellow, violet, green, orange
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B)
orange, yellow, green, violet
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C)
violet, green, yellow, orange
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D)
yellow, green, orange, violet
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E)
orange, green, violet, yellow
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question_answer 54) The velocity of sound is v at 273K. The temperature at which it is 2v is
A)
\[2\times 273\,K\]
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B)
\[4\times 273\,K\]
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C)
\[8\times 273\,K\]
done
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D)
\[16\times 273\,K\]
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E)
\[\sqrt{2}\times 273\,K\]
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question_answer 55) Same force acts on two bodies of different masses 3 kg and 5 kg initially at rest. The ratio of times required to acquire same final velocity is
A)
\[5:3\]
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B)
\[25:9\]
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C)
\[9:25\]
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D)
\[\sqrt{3}:\sqrt{5}\]
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E)
\[3:5\]
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question_answer 56) To decrease the volume of a gas by 5% at constant temperature the pressure should be
A)
decreased by 5.26%
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B)
increased by 5.2%
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C)
decreased by 11%
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D)
increased by 11%
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E)
increased by 15%
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question_answer 57) A block of wood weight 4 N in air and 3N, when immersed in a liquid. The buoyant force in newton is
A)
zero
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B)
1
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C)
3/4
done
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D)
4/3
done
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E)
7
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question_answer 58) A 16\[\mu F\] capacitor is charged to a 20V potential. The battery is then disconnected and pure 40 mH coil is connected across the capacitor, so that LC oscillations are setup. The maximum current in the coil is
A)
0.2 A
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B)
40 mA
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C)
2 A
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D)
0.4 A
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E)
0.8 A
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question_answer 59) A concave lens of focal length 20 cm produces an image half the size of the real object. The distance of the real object is
A)
20 cm
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B)
30 cm
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C)
10 cm
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D)
60 cm
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E)
40 cm
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question_answer 60) If the kinetic energy of the particle is increased by 16 times, the percentage change in the de-Broglie wavelength of the particle is
A)
25%
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B)
75%
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C)
60%
done
clear
D)
50%
done
clear
E)
30%
done
clear
View Answer play_arrow
question_answer 61) Which one of the following is a tridentate ligand?
A)
\[NO_{2}^{-}\]
done
clear
B)
Oxalate ion
done
clear
C)
Glycinate ion
done
clear
D)
Dien
done
clear
E)
EDTA
done
clear
View Answer play_arrow
question_answer 62) For the purification, isolation and separation of organic compounds, the latest technique followed is
A)
chromatography
done
clear
B)
steam distillation
done
clear
C)
fractional crystallization
done
clear
D)
sublimation
done
clear
E)
vacuum distillation
done
clear
View Answer play_arrow
question_answer 63) Which one of the following compounds cannot show tautomerism?
A)
\[C{{H}_{3}}-\underset{O}{\mathop{\underset{\mathbf{||}}{\mathop{C}}\,}}\,-C{{H}_{3}}\]
done
clear
B)
\[C{{H}_{2}}=CH-OH\]
done
clear
C)
done
clear
D)
done
clear
E)
done
clear
View Answer play_arrow
question_answer 64)
The reaction, is an example of
A)
Wurtz reaction
done
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B)
Wittig reaction
done
clear
C)
Ullmann reaction
done
clear
D)
Williamson reaction
done
clear
E)
Wurtz-Fittig reaction
done
clear
View Answer play_arrow
question_answer 65) Chloroform gives a trichloro derivative of an alcohol on reaction with
A)
cone. nitric acid
done
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B)
aq. Alkali
done
clear
C)
acetone and alkali
done
clear
D)
sodium ethoxide
done
clear
E)
a primary amine and an alkali
done
clear
View Answer play_arrow
question_answer 66) \[10\,L\] of\[{{O}_{2}}\]gas is reacted with 30 L of CO gas at STP. The volumes of each gas present at the end of the reaction are
A)
\[CO=10\,L,\,C{{O}_{2}}=20L\]
done
clear
B)
\[{{O}_{2}}=10\,L,\,CO=20L\]
done
clear
C)
\[CO=20\,L,\,C{{O}_{2}}=10L\]
done
clear
D)
\[{{O}_{2}}=10\,L,\,C{{O}_{2}}=20L\]
done
clear
E)
\[{{O}_{2}}=10\,L,\,CO=20L\]
done
clear
View Answer play_arrow
question_answer 67) For an atom, having \[n=4,\]\[{{m}_{l}}=+1,\]the maximum number of electrons is
A)
4
done
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B)
15
done
clear
C)
3
done
clear
D)
1
done
clear
E)
6
done
clear
View Answer play_arrow
question_answer 68) Which of the following diagrams correctly describes the behaviour of a fixed mass of an ideal gas? (T is measured in K).
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
E)
done
clear
View Answer play_arrow
question_answer 69) The hybridisation of oxygen atom in \[{{H}_{2}}{{O}_{2}}\] is
A)
\[s{{p}^{3}}d\]
done
clear
B)
\[sp\]
done
clear
C)
\[s{{p}^{2}}\]
done
clear
D)
\[s{{p}^{3}}\]
done
clear
E)
\[s{{p}^{3}}{{d}^{2}}\]
done
clear
View Answer play_arrow
question_answer 70) Among the metals Cr, Fe, Mn, Ti, Zn and Mg, the one that cannot be obtained by reduction of its metal oxide by aluminium is
A)
Cr
done
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B)
Fe
done
clear
C)
Mn
done
clear
D)
Zn
done
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E)
Mg
done
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View Answer play_arrow
question_answer 71) For which one of the following minerals, the composition given is incorrect?
A)
Glaubers salt - \[N{{a}_{2}}S{{O}_{4}}\cdot 10\,{{H}_{2}}O\]
done
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B)
Borax - \[N{{a}_{2}}{{B}_{4}}{{O}_{7}}\cdot 7{{H}_{2}}O\]
done
clear
C)
Camallite - \[KCl\cdot MgC{{l}_{2}}\cdot 6{{H}_{2}}O\]
done
clear
D)
Soda ash - \[N{{a}_{2}}C{{O}_{3}}\]
done
clear
E)
Epsom salt - \[MgS{{O}_{4}}\cdot 7{{H}_{2}}O\]
done
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View Answer play_arrow
question_answer 72) Which of the following is the correct order of increasing enthalpy of vaporisation?
A)
\[N{{H}_{3}}<P{{H}_{3}}<As{{H}_{3}}\]
done
clear
B)
\[As{{H}_{3}}<P{{H}_{3}}<N{{H}_{3}}\]
done
clear
C)
\[P{{H}_{3}}<As{{H}_{3}}<N{{H}_{3}}\]
done
clear
D)
\[N{{H}_{3}}<As{{H}_{3}}<P{{H}_{3}}\]
done
clear
E)
\[As{{H}_{3}}<N{{H}_{3}}<P{{H}_{3}}\]
done
clear
View Answer play_arrow
question_answer 73) Chlorine reacts with excess of ammonia to form
A)
\[N{{H}_{4}}Cl\]
done
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B)
\[{{N}_{2}}+HCl\]
done
clear
C)
\[{{N}_{2}}+N{{H}_{4}}Cl\]
done
clear
D)
\[{{N}_{2}}+NC{{l}_{3}}\]
done
clear
E)
\[NC{{l}_{3}}+HCl\]
done
clear
View Answer play_arrow
question_answer 74) The correct order of ionic radii of \[{{Y}^{3+}},\]\[L{{a}^{3+}},\]\[E{{u}^{3+}}\]and \[L{{u}^{3+}}\] is
A)
\[{{Y}^{3+}}<L{{a}^{3+}}<E{{u}^{3+}}<L{{u}^{3+}}\]
done
clear
B)
\[L{{u}^{3+}}<E{{u}^{3+}}<L{{a}^{3+}}<{{Y}^{3+}}\]
done
clear
C)
\[L{{a}^{3+}}<E{{u}^{3+}}<L{{u}^{3+}}<{{Y}^{3+}}\]
done
clear
D)
\[{{Y}^{3+}}<L{{u}^{3+}}<E{{u}^{3+}}<L{{a}^{3+}}\]
done
clear
E)
\[E{{u}^{3+}}<L{{a}^{3+}}<L{{u}^{3+}}<{{Y}^{3+}}\]
done
clear
View Answer play_arrow
question_answer 75) The bond dissociation energies of \[{{H}_{2}},\,C{{l}_{2}}\] and \[HCl\] are 104, 58 and 103 kcal\[\text{mo}{{\text{l}}^{-1}}\] respectively. The enthalpy of formation of \[HCl\]would be
A)
\[-\,22\text{ kcal mo}{{\text{l}}^{-1}}\]
done
clear
B)
\[-\,44\text{ kcal mo}{{\text{l}}^{-1}}\]
done
clear
C)
\[+\,44\text{ kcal mo}{{\text{l}}^{-1}}\]
done
clear
D)
\[+\,22\text{ kcal mo}{{\text{l}}^{-1}}\]
done
clear
E)
\[-\,11\text{ kcal mo}{{\text{l}}^{-1}}\]
done
clear
View Answer play_arrow
question_answer 76) The vant Hoff factor for a solute that associates in solution is
A)
zero
done
clear
B)
1.0
done
clear
C)
less than 1
done
clear
D)
more than 1
done
clear
E)
between 1 and 2
done
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View Answer play_arrow
question_answer 77) Which of the following is redox reaction?
A)
\[2CuS{{O}_{4}}+4KI\to C{{u}_{2}}{{I}_{2}}+2{{K}_{2}}S{{O}_{4}}+{{I}_{2}}\]
done
clear
B)
\[S{{O}_{2}}+{{H}_{2}}O\to {{H}_{2}}S{{O}_{3}}\]
done
clear
C)
\[N{{a}_{2}}S{{O}_{4}}+BaC{{l}_{2}}\to BaS{{O}_{4}}+2NaCl\]
done
clear
D)
\[CuS{{O}_{4}}+4N{{H}_{3}}\to [Cu{{(N{{H}_{3}})}_{4}}]S{{O}_{4}}\]
done
clear
E)
\[{{C}_{12}}{{H}_{22}}{{O}_{11}}+{{H}_{2}}O\to {{C}_{6}}{{H}_{12}}{{O}_{6}}+{{C}_{6}}{{H}_{12}}{{O}_{6}}\]
done
clear
View Answer play_arrow
question_answer 78) The resistance of N/10 solution is found to be \[2.5\times {{10}^{3}}\]ohm. The equivalent conductance of the solution is (cell constant = 1.25\[c{{m}^{-1}}\])
A)
\[2.5\,\,oh{{m}^{-1}}c{{m}^{2}}equi{{v}^{-1}}\]
done
clear
B)
\[5.0\,\,oh{{m}^{-1}}c{{m}^{2}}equi{{v}^{-1}}\]
done
clear
C)
\[2.5\,\,oh{{m}^{-1}}c{{m}^{2}}equi{{v}^{-1}}\]
done
clear
D)
\[5.0\,\,oh{{m}^{-1}}c{{m}^{2}}equi{{v}^{-1}}\]
done
clear
E)
\[1.25\,\,oh{{m}^{-1}}c{{m}^{2}}equi{{v}^{-1}}\]
done
clear
View Answer play_arrow
question_answer 79) Which one of the following acts as the best coagulating agents for ferric hydroxide sol?
A)
Magnesium chloride
done
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B)
Hydrochloric acid
done
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C)
Aluminium chloride
done
clear
D)
Potassium oxalate
done
clear
E)
Potassium ferricyanide
done
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View Answer play_arrow
question_answer 80) If the equilibrium constant for the reaction \[{{N}_{2}}(g)+3{{H}_{2}}(g)\rightleftharpoons 2N{{H}_{3}}(g)\] at 750 K is 49, then the equilibrium constant for the reaction \[N{{H}_{3}}(g)\rightleftharpoons \frac{1}{2}{{N}_{2}}(g)+\frac{3}{2}{{H}_{2}}(g)\]at the same temperature is
A)
1/49
done
clear
B)
49
done
clear
C)
7
done
clear
D)
\[{{49}^{2}}\]
done
clear
E)
1/7
done
clear
View Answer play_arrow
question_answer 81) The correct relation between equilibrium constant (K), standard free energy\[(\Delta G{}^\circ )\]and temperature (T) is
A)
\[\Delta G{}^\circ =RT\,\ln K\]
done
clear
B)
\[K={{e}^{-\Delta G{}^\circ /2303RT}}\]
done
clear
C)
\[\Delta G{}^\circ =-RT{{\log }_{10}}K\]
done
clear
D)
\[K={{10}^{-\Delta G{}^\circ /2.303\,RT}}\]
done
clear
E)
\[\Delta G{}^\circ =R\,\ln \,K\]
done
clear
View Answer play_arrow
question_answer 82) Which among the following is the heaviest?
A)
1 mole of oxygen
done
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B)
1 molecule of sulphur trioxide
done
clear
C)
100 u of uranium
done
clear
D)
10 moles of hydrogen
done
clear
E)
44 g of carbon dioxide
done
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View Answer play_arrow
question_answer 83) Which one of the following electrolytes would dissolve in water to give an alkaline solution?
A)
\[C{{H}_{3}}COOH\]
done
clear
B)
\[C{{H}_{3}}COONa\]
done
clear
C)
\[N{{H}_{4}}Cl\]
done
clear
D)
\[HCN\]
done
clear
E)
\[NaCl\]
done
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View Answer play_arrow
question_answer 84) The efficiency of an enzyme to catalyse a reaction is due to its capacity to
A)
reduce the activation energy of the reaction
done
clear
B)
form strong enzyme-substrate complex
done
clear
C)
decrease the bond energy of all substrate molecules
done
clear
D)
increase the free energy of the catalyst-substrate reaction
done
clear
E)
alter the substrate geometry to fit into the shape of the enzyme molecule
done
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View Answer play_arrow
question_answer 85) If 0.5 g of a solute (molar mass 100 g\[mo{{l}^{-1}}\]) in of solvent elevates the boiling point by 1K, the molar boiling point constant of the solvent is
A)
2
done
clear
B)
8
done
clear
C)
5
done
clear
D)
0.5
done
clear
E)
10
done
clear
View Answer play_arrow
question_answer 86) \[A\xrightarrow{Dil\,NaOH}{{(C{{H}_{3}})}_{2}}C=CHOCH=C{{(C{{H}_{3}})}_{2}}\]What is A?
A)
Acetone
done
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B)
Acetaldehyde
done
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C)
Propionaldehyde
done
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D)
Formaldehyde
done
clear
E)
Ethyl alcohol
done
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View Answer play_arrow
question_answer 87) Which of the following metals, Fe, Zn, Pb, Ag and Pt, do not give a metal nitrate on treatment with concentrated\[HN{{O}_{3}}\]?
A)
Fe and Zn
done
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B)
Fe and Pt
done
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C)
Pb, Ag and Pt
done
clear
D)
Fe, Ag and Pt
done
clear
E)
Fe, Zn and Pt
done
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View Answer play_arrow
question_answer 88) One of the different amino acids which can be synthesized in the body is
A)
lysine
done
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B)
leucine
done
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C)
valine
done
clear
D)
phenyl alanine
done
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E)
alanine
done
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View Answer play_arrow
question_answer 89) Neopentyl bromide undergoes dehydro halogenation to give alkene even though it has no \[\beta \text{-}\]hydrogen. This is due to
A)
E2 mechanism
done
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B)
E1 mechanism
done
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C)
due to rearrangement of carbocation by E1 mechanism
done
clear
D)
E1 CB mechanism
done
clear
E)
Hermann elimination
done
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View Answer play_arrow
question_answer 90) Which of the following statements is true?
A)
The kinetic energy of an electron is inversely proportional to square of its momentum
done
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B)
de-Broglie wavelength associated with a particle is directly proportional to its mass
done
clear
C)
de-Broglie wavelength associated with a particle is directly proportional to square of its velocity
done
clear
D)
The wavelength associated with an electron is directly proportional to square root of accelerating potential
done
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E)
The kinetic energy of an electron is directly proportional to accelerating potential
done
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View Answer play_arrow
question_answer 91) Dead burnt plaster is
A)
\[CaS{{O}_{4}}\cdot 2{{H}_{2}}O\]
done
clear
B)
\[MgS{{O}_{4}}\cdot 7{{H}_{2}}O\]
done
clear
C)
\[CaS{{O}_{4}}\cdot 1/2\,{{H}_{2}}O\]
done
clear
D)
\[CaS{{O}_{4}}\]
done
clear
E)
\[MgS{{O}_{4}}\]
done
clear
View Answer play_arrow
question_answer 92) The diketone\[C{{H}_{3}}-\overset{O}{\mathop{\overset{\mathbf{||}}{\mathop{C}}\,}}\,-{{(C{{H}_{2}})}_{2}}-\overset{O}{\mathop{\overset{\mathbf{||}}{\mathop{C}}\,}}\,-C{{H}_{3}}\]on intramolecular aldol condensation gives the final product
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
E)
done
clear
View Answer play_arrow
question_answer 93) The electronic configuration of four elements are 1. \[[Xe]\,6{{s}^{1}}\] 2. \[[Xe]\,4{{f}^{14}},5{{d}^{1}},6{{s}^{2}}\] 3. \[[\text{Ar}]\,4{{s}^{2}}4{{p}^{5}}\] 4. \[[\text{Ar}]\,3{{d}^{7}},4{{s}^{2}}\] Which one of the following statements about these elements is not correct?
A)
1 is a strong reducing agent
done
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B)
2 is a d-block element
done
clear
C)
3 has high electron affinity
done
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D)
4 shows variable oxidation state
done
clear
E)
The compound formed between 1 and 3 is ionic
done
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View Answer play_arrow
question_answer 94) Which one of the following statements about \[C{{H}_{3}}CN\] is not true?
A)
Its IUPAC name is ethane nitrile
done
clear
B)
The bond between C and N is a triple bond
done
clear
C)
The C -C - N bond angle is \[180{}^\circ \]
done
clear
D)
The carbon-carbon bond is longer than the carbon-nitrogen bond
done
clear
E)
It has a relatively high boiling point due to hydrogen bonding
done
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View Answer play_arrow
question_answer 95) For the homogeneous reaction\[xA+yB\rightleftharpoons lY+mZ\]\[\Delta H{}^\circ =-30\,kJ\,mo{{l}^{-1}}\]and \[\Delta S=-100\,JK\,mo{{l}^{-1}}\] At what temperature the reaction is at equilibrium?
A)
\[50{}^\circ C\]
done
clear
B)
\[250{}^\circ C\]
done
clear
C)
\[100K\]
done
clear
D)
\[27{}^\circ C\]
done
clear
E)
\[500K\]
done
clear
View Answer play_arrow
question_answer 96) The half cell reaction with their standard electrode potentials are \[P{{b}^{2+}}(aq)+2{{e}^{-}}t\xrightarrow{{}}Pb(s);\]\[E{}^\circ =-\,0.13\,V\] \[A{{g}^{+}}(aq)+{{e}^{-}}\xrightarrow{{}}Ag(s);\] \[E{}^\circ =+\,0.80\,V\] What is the emf of the cell?
A)
\[-\,0.93\,\,V\]
done
clear
B)
\[+\,0.93\,V\]
done
clear
C)
\[+\,0.67\,V\]
done
clear
D)
\[-\,0.67\,\,V\]
done
clear
E)
None of these
done
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question_answer 97) Which of the following molecule is planar?
A)
\[C{{H}_{4}}\]
done
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B)
\[N{{H}_{3}}\]
done
clear
C)
\[{{C}_{2}}{{H}_{4}}\]
done
clear
D)
\[SiC{{l}_{4}}\]
done
clear
E)
\[PC{{l}_{3}}\]
done
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View Answer play_arrow
question_answer 98) The formula of compound which gives violet colour in Lassaignes test for sulphur with sodium nitroprusside is
A)
\[N{{a}_{4}}[Fe{{(CN)}_{6}}S]\]
done
clear
B)
\[N{{a}_{4}}[Fe{{(CN)}_{5}}NCS]\]
done
clear
C)
\[N{{a}_{4}}[Fe{{(CN)}_{5}}NOS]\]
done
clear
D)
\[N{{a}_{2}}[Fe{{(CN)}_{5}}NOS]\]
done
clear
E)
\[N{{a}_{4}}[Fe{{(CN)}_{5}}S]\]
done
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View Answer play_arrow
question_answer 99) The strongest ortho-para and strongest mete-directing groups respectively, are
A)
\[-N{{O}_{2}}\] and\[-N{{H}_{2}}\]
done
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B)
\[-CON{{H}_{2}}\] and\[-N{{H}_{2}}\]
done
clear
C)
\[-N{{H}_{2}}\] and\[-CON{{H}_{2}}\]
done
clear
D)
\[-X\] and\[-CON{{H}_{2}}\]
done
clear
E)
\[-N{{H}_{2}}\] and\[-N{{O}_{2}}\]
done
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View Answer play_arrow
question_answer 100) When excess ammonia is added to \[CuS{{O}_{4}}\] solution the deep blue complex obtained is
A)
tetrahedral and paramagnetic
done
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B)
tetrahedral and diamagnetic
done
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C)
square planar and diamagnetic
done
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D)
square planar and paramagnetic
done
clear
E)
tetrahedral and ferromagnetic
done
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View Answer play_arrow
question_answer 101) The angular momentum of an electron is zero. In which orbital may it be present?
A)
2s
done
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B)
2p
done
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C)
3d
done
clear
D)
4f
done
clear
E)
5f
done
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View Answer play_arrow
question_answer 102) Which of the following will show geometrical isomerism?
A)
2-methyl butene
done
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B)
Propene
done
clear
C)
Vinyl chloride
done
clear
D)
But-2-ene
done
clear
E)
2-methyl propene
done
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View Answer play_arrow
question_answer 103) A substance with initial concentration of a mol \[d{{m}^{-3}}\]reacts according to zero order kinetics. The time it takes for the completion of the reaction is: (k = rate constant)
A)
\[k\text{/}a\]
done
clear
B)
\[a\text{/}2k\]
done
clear
C)
\[a\text{/}k\]
done
clear
D)
\[2k\text{/}a\]
done
clear
E)
\[ka\]
done
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View Answer play_arrow
question_answer 104) Biotin is an organic compound present in yeast. Its deficiency in diet causes dermatitis and paralysis. It is also known as
A)
Vitamin \[H\]
done
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B)
Vitamin\[{{B}_{3}}\]
done
clear
C)
Vitamin \[{{B}_{12}}\]
done
clear
D)
Vitamin\[D\]
done
clear
E)
Vitamin \[E\]
done
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View Answer play_arrow
question_answer 105) Consider the following reaction at\[1000{}^\circ C\]. (I) \[Zn(s)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}ZnO(s);\]\[\Delta G{}^\circ =-360\,kJ\,mo{{l}^{-1}}\] (II) \[C\text{(graphite)}+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}CO(g);\]\[\Delta G{}^\circ =-\,460\,kJ\,mo{{l}^{-1}}\] Choose the correct statement at\[1000{}^\circ C\].
A)
Zinc can be oxidised by carbon monoxide
done
clear
B)
Zinc oxide can be reduced by graphite
done
clear
C)
Both statements a and b are true
done
clear
D)
Both statements a and b are false
done
clear
E)
Carbon monoxide can be reduced by zinc
done
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View Answer play_arrow
question_answer 106) Which of the following metals in solution forms a precipitate with\[NaOH,\]which is not soluble in an excess of the base?
A)
Fe
done
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B)
Sn
done
clear
C)
Pb
done
clear
D)
Zn
done
clear
E)
Al
done
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View Answer play_arrow
question_answer 107) The following is known as Bordeaux mixture.
A)
borax and copper sulphate
done
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B)
orthoboric acid and ferrous sulphate
done
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C)
sodium borate and zinc sulphate
done
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D)
copper sulphate and lime
done
clear
E)
borax and manganous sulphate
done
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View Answer play_arrow
question_answer 108) Which among the following will give a precipitate with ammoniacal silver nitrate?
A)
2-butene
done
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B)
2-butyne
done
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C)
Chlorobenzene
done
clear
D)
3-methyl-1-butyne
done
clear
E)
1, 3-butadiene
done
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View Answer play_arrow
question_answer 109)
Consider the following representations They are
A)
enantiomers
done
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B)
diastereomers
done
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C)
conformational isomers
done
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D)
identical
done
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E)
cis-trans isomers
done
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View Answer play_arrow
question_answer 110) Which one of the following compounds is used as a body deodorant?
A)
Aspirin
done
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B)
Omeprazole
done
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C)
Indigosol-O
done
clear
D)
p-chlorometaxylenol
done
clear
E)
Bithional
done
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View Answer play_arrow
question_answer 111) The rate constant for a first order reaction becomes six times when the temperature is raised from 350 K to 400 K. Calculate the activation energy for the reaction. \[(R=8.314\,\,J{{K}^{-1}}mo{{l}^{-1}})\]
A)
\[41.7\,kJ\,mo{{l}^{-1}}\]
done
clear
B)
\[4.17\,kJ\,mo{{l}^{-1}}\]
done
clear
C)
\[417\,kJ\,mo{{l}^{-1}}\]
done
clear
D)
\[0.417\,kJ\,mo{{l}^{-1}}\]
done
clear
E)
\[4170\,kJ\,mo{{l}^{-1}}\]
done
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View Answer play_arrow
question_answer 112) Which of the following is not a green house gas?
A)
\[C{{O}_{2}}\]
done
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B)
\[C{{H}_{4}}\]
done
clear
C)
\[{{O}_{3}}\]
done
clear
D)
\[{{N}_{2}}\]
done
clear
E)
\[CC{{l}_{2}}{{F}_{2}}\]
done
clear
View Answer play_arrow
question_answer 113) KBr is 80% dissociated in aqueous solution of 0.5m concentration. (Given,\[{{k}_{f}}\]for water = 1.86 K kg \[\text{mo}{{\text{l}}^{-1}}\]). The solution freezes at
A)
271.326 K
done
clear
B)
272 K
done
clear
C)
270.5 K
done
clear
D)
268.5 K
done
clear
E)
269 K
done
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View Answer play_arrow
question_answer 114) \[{}^{39}A{{r}_{18}}\] and \[{}^{40}{{K}_{19}}\] are
A)
isotopes
done
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B)
isobars
done
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C)
isotones
done
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D)
isosters
done
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E)
isodiaphers
done
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View Answer play_arrow
question_answer 115) Which pair of the gases diffuses with the same rate at same temperature and pressure?
A)
\[CO\] and \[NO\]
done
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B)
\[N{{O}_{2}}\] and \[C{{O}_{2}}\]
done
clear
C)
\[N{{H}_{3}}\] and \[P{{H}_{3}}\]
done
clear
D)
\[NO\] and \[{{C}_{2}}{{H}_{6}}\]
done
clear
E)
\[C{{l}_{2}}\] and \[S{{O}_{2}}\]
done
clear
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question_answer 116) In the Victor-Meyers test, the colours given by \[1{}^\circ ,\,\,2{}^\circ \] and \[3{}^\circ \]alcohols are respectively
A)
red, colourless, blue
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B)
red, blue, colourless
done
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C)
colourless, red, blue
done
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D)
red, blue, violet
done
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E)
blue, red, violet
done
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question_answer 117) A particular solid is very hard and has a high melting point. In solid state it is a non -conductor and its melt is a conductor of electricity. Classify the solid
A)
metallic
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B)
molecular
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C)
network
done
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D)
ionic
done
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E)
amorphous.
done
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question_answer 118) Which one of the following statements about diborane is not true?
A)
The B atoms in it are \[s{{p}^{3}}\] hybridized
done
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B)
It contains two 3-centre-2-electron bonds
done
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C)
All B-H bond lengths in it are equal due to resonance
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D)
The molecule is non-planar
done
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E)
The molecule contains 12 valence electrons
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question_answer 119) Which of the following is not aromatic?
A)
Benzene
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B)
Cyclopropenyl cation
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C)
Tropylium cation
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D)
Cyclopentadienyl cation
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E)
Cyclopentadienyl anion
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question_answer 120) The element that does not exhibit positive oxidation state is
A)
Fe
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B)
Cl
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C)
O
done
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D)
N
done
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E)
F
done
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question_answer 121) Which one is related to urine concentration in mammals?
A)
Testosterone hormone
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B)
Antidiuretic hormone
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C)
Oxytocin hormone
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D)
Insulin
done
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E)
All of the above
done
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question_answer 122) Adjacent epithelial cells are held together by means of
A)
microsomes
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B)
liposomes
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C)
desmosomes
done
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D)
glyoxysomes
done
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E)
None of these
done
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question_answer 123) First \[C{{O}_{2}}\] acceptor in \[{{C}_{4}}\]-plants is
A)
PEP
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B)
PGA
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C)
RuBP
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D)
pyruvic acid
done
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E)
OAA
done
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question_answer 124) In the members of family-Malvaceae anthers are described as
A)
diadelphous and dithecous
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B)
diadelphous and monothecous
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C)
monoadelphous and monothecous
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D)
monoadelphous and dithecous
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E)
None of the above
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question_answer 125) In the angiosperm ovule, central cell of the embryo sac, prior to the entry of pollen tube, contains
A)
a single haploid nucleus
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B)
one diploid and one haploid nuclei
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C)
two haploid polar nuclei
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D)
one diploid secondary nucleus
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E)
two diploid polar nuclei
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question_answer 126) Which type of cells are absent in sponges?
A)
Trophocytes
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B)
Myocytes
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C)
Archeocytes
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D)
Cnidocytes
done
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E)
All of these
done
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question_answer 127) Which of the following is purely motor cranial nerve?
A)
Optic
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B)
Olfactory
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C)
Vagus
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D)
Abducens
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E)
All of these
done
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question_answer 128) Which one of the following is correctly matched?
A)
Body louse - Typhoid
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B)
House fly - Yellow fever
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C)
Anopheles - Malaria
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D)
Aedes - Plague
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E)
Leishmania - Sysphilis
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question_answer 129) In earthworm self-fertilization cannot occur due to
A)
protogyny
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B)
protandry
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C)
epigyny
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D)
hypogyny
done
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E)
None of these
done
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question_answer 130) Which of the following is an opiate narcotic?
A)
Morphine
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B)
LSD
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C)
Amphetamines
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D)
Barbiturates
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E)
Both (a) and (b)
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question_answer 131) Pollination by snail and slug is known as
A)
entomophilous
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B)
ornithophilous
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C)
anemophilous
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D)
malacophilous
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E)
hydrophilous
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question_answer 132) Which is the example of conditioned reflex?
A)
Your kneeing took up a stone than dog run away
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B)
Eye closed when anything enter into it
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C)
Hand took up when piercing with needle
done
clear
D)
Digestive food goes forward in alimentary canal
done
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E)
None of the above
done
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question_answer 133) Colchicine prevents the mitosis of cells at which of the following stage?
A)
Anaphase
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B)
Metaphase
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C)
Prophase
done
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D)
Interphase
done
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E)
Telophase
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question_answer 134) Hydrolytic enzymes are found in
A)
lysosomes
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B)
peroxisomes
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C)
lomasomes
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D)
ribosomes
done
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E)
centrosome
done
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question_answer 135) The binomial names was accepted by all after the publication of the work by
A)
Linnaeus
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B)
Hooke
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C)
Bentham
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D)
Darwin
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E)
Lamarck
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question_answer 136) The pair of disease caused by virus is
A)
typhoid, tetanus
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B)
rabies, mumps
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C)
cholera, tuberculosis
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D)
AIDS, syphilis
done
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E)
TB, typhoid
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question_answer 137) An angiospermic leaf carries 16 chromosomes. The number of chromosomes in its endosperm will be
A)
16
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B)
24
done
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C)
12
done
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D)
8
done
clear
E)
32
done
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question_answer 138) A chemical fertilizin is produced form
A)
polar bodies
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B)
middle piece of sperm
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C)
acrosome
done
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D)
mature eggs
done
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E)
Sertoli cells
done
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question_answer 139) Free living, aerobic, non-photosynthetic nitrogen fixing bacterium is
A)
Azotobacter
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B)
E. coli
done
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C)
Nostoc
done
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D)
Salmonella
done
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E)
Clostridium
done
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question_answer 140) Which of the following hormones stimulates the stomach to secrete gastric juice?
A)
Gastrin
done
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B)
Enterokinase
done
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C)
Remin
done
clear
D)
Zymase
done
clear
E)
Secretin
done
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question_answer 141) The meristem responsible for extra stellar secondary growth in dicot stem is
A)
interfascicular cambium
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B)
intrafascicular cambium
done
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C)
intercalary meristem
done
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D)
phellogen
done
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E)
phelloderm
done
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question_answer 142) Minamata disease prevalent in industrial area due to pollution is due to
A)
lead
done
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B)
cadmium
done
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C)
mercury
done
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D)
zinc
done
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E)
arsenic
done
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question_answer 143) As a fungus completes its life cycle on two hosts it is termed as
A)
heteroecious
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B)
autoecious
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C)
heterothallic
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D)
monothallic
done
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E)
None of these
done
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question_answer 144) In an ovule the wall curvature is more pronounced and embryo sac become horse shoe shaped. The ovule is
A)
campylotropous
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B)
anatropous
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C)
amphitropous
done
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D)
orthotropous
done
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E)
hemianatropus
done
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question_answer 145) The stomata in CAM plants open during
A)
day
done
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B)
night
done
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C)
Both and
done
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D)
always closed
done
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E)
always open
done
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question_answer 146) Engler and Pranti published a phylogenetic system in the monograph
A)
Die Naturlichen pflanzen Familien
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B)
Historia Plantarum
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C)
Species Plantarum
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D)
Genera Plantarum
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E)
Origin of Species
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question_answer 147) Vascular bundles are arranged in a ring in the members of family
A)
Orchidaceae
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B)
Iridaceae
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C)
Euphorbiaceae
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D)
Lilliaceae
done
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E)
Palmae
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question_answer 148) The cloves which are used in food preparation are
A)
seeds
done
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B)
leaves
done
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C)
flower buds
done
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D)
stem tips
done
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E)
terminal buds
done
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question_answer 149) How many female flowers occur in a cyatbium?
A)
One
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B)
Two
done
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C)
Three
done
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D)
Four
done
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E)
Many
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question_answer 150) Which of the following features is absent in the family-Asteraceae?
A)
Cypsela fruit
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B)
Capirulum inflorescence
done
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C)
Hypogynous flowers
done
clear
D)
Syngenesious anthers
done
clear
E)
Pappus calyx
done
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question_answer 151) Casparian strip is made up of
A)
lignin
done
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B)
pectin
done
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C)
suberin
done
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D)
cellulose
done
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E)
starch
done
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question_answer 152) The phloem of angiosperms differs from that of other vascular plants by the presence of
A)
vessels
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B)
companion cells
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C)
tylosoides
done
clear
D)
albuminous cells
done
clear
E)
secretory cells
done
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question_answer 153) Fat is stored in the plant cell in
A)
lysosome
done
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B)
sphaerosome
done
clear
C)
microsome
done
clear
D)
peroxisome
done
clear
E)
macrophage
done
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question_answer 154) Which of the following is the unit of measurement of water potential?
A)
Watts
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B)
Joule
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C)
Pascal
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D)
Litre
done
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E)
Cubic centimeter
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question_answer 155) The number of NADPH molecules that are used during the conversion of carbon dioxide info one molecule of glucose
A)
1
done
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B)
4
done
clear
C)
6
done
clear
D)
8
done
clear
E)
12
done
clear
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question_answer 156) DNA duplication takes place during
A)
cell division phase
done
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B)
entire interphase
done
clear
C)
only in \[{{G}_{1}}\]-phase
done
clear
D)
only in \[{{G}_{2}}\]-phase
done
clear
E)
only in S-phase
done
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question_answer 157) If RQ is 0.6 in a respiratory matabolism. It would mean that
A)
carbohydrates are used as respiratory, substrate
done
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B)
organic acids are used as respiratory substrate
done
clear
C)
the oxidation of the respiratory substrate consumed more oxygen than the amount of\[C{{O}_{2}}\] released
done
clear
D)
the oxidation of the respiratory substrate consumed more oxygen than the amount of \[C{{O}_{2}}\]released
done
clear
E)
the reaction is anaerobic
done
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question_answer 158) Which of the following gene clusters in bacteria is responsible for nitrogen fixation?
A)
Nod, nif, fix
done
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B)
Nod, ndf, nfx
done
clear
C)
Nod, nix, nfx
done
clear
D)
Ndx, nif, fix
done
clear
E)
Ndx, nif, nix
done
clear
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question_answer 159) In Electron Transport System (ETS) which of the following cytochrome reacts with oxygen?
A)
\[Cyt.\text{-}b\]
done
clear
B)
\[Cyt.\text{-}{{a}_{3}}\]
done
clear
C)
\[Cyt.\text{-}{{b}_{6}}\]
done
clear
D)
\[Cyt.\text{-}f\]
done
clear
E)
\[Cyt.\text{-}{{b}_{3}}\]
done
clear
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question_answer 160) The process in which haploid embryo is formed from haploid egg without fertilization is called
A)
apospory
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B)
agamospermy
done
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C)
apogamy
done
clear
D)
vegetative reproduction
done
clear
E)
adventive polyembryony
done
clear
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question_answer 161) \[C{{O}_{2}},\,C{{H}_{4}},\,{{N}_{2}}O\] and \[CFCs\]are called green house gases because they can absorb
A)
ultraviolet radiation
done
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B)
long wave infra red radiation
done
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C)
visible light radiation
done
clear
D)
\[X\text{-}\]rays radiation
done
clear
E)
\[\gamma \text{-}\]rays radiation
done
clear
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question_answer 162) The transition zone between two communities is known as
A)
ecotone
done
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B)
keystone
done
clear
C)
edge effect
done
clear
D)
critical link species
done
clear
E)
edge species
done
clear
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question_answer 163) Which of the following statements is false?
A)
Male round worm is smaller than female
done
clear
B)
Earthworms are hermaphrodites
done
clear
C)
Echinoderms are protostomous coelomates
done
clear
D)
Human teeth are anatomically comparable to scales of shark
done
clear
E)
Hair is a derivative of skin
done
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question_answer 164) Triploblastic, unsegmented, acoelomate exhibiting bilateral symmetry and reproducing both asexually and sexually, with some parasitic forms. The above description is characteristic of the phylum
A)
Annelida
done
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B)
Ctenophora
done
clear
C)
Cnidaria
done
clear
D)
Porifera
done
clear
E)
Platyhelminthes
done
clear
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question_answer 165) Dr. Khorana and his collegues synthesized an RNA molecule with repeating sequence of UG n bases (UG UG UG UG UG UG). It produced a tetrapeptide with alternating sequence of cystein and valine. It proves that codons for cystein and valine is
A)
UGU and GUU
done
clear
B)
UGU and GUG
done
clear
C)
UUG and GGU
done
clear
D)
GUG and UGU
done
clear
E)
GUU and UGU
done
clear
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question_answer 166) Inter-vertebral disc consists of a shock absorber connective tissue known as
A)
hyaline cartilage
done
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B)
elastic cartilage
done
clear
C)
fibro cartilage
done
clear
D)
recticulo cartilage
done
clear
E)
calacified cartilage
done
clear
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question_answer 167) Blackening of urine when exposed to air is a metabolic disorder in human beings. This is due to
A)
phenylalanine
done
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B)
tyrosine
done
clear
C)
valine replacing glutamine
done
clear
D)
glutamine replacing valine
done
clear
E)
homogentisic acid
done
clear
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question_answer 168) Phenylketonuria is a genetic disorder of
A)
trisomic condition
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B)
mpnosomic condition
done
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C)
autosomal dominant gene
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D)
autosomal recessive gene
done
clear
E)
X-linked
done
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question_answer 169) Neoteny refers to
A)
development of gonads
done
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B)
pre-adult animal
done
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C)
metamorphosis
done
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D)
retention of larval or embryonic trait in the adult body
done
clear
E)
precociocus development
done
clear
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question_answer 170) In earthworm the dorsal wall of the intestine from the 26th segment to 95th segment forms a median internal fold called
A)
trochophore
done
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B)
typhlosole
done
clear
C)
clitellum
done
clear
D)
trachea
done
clear
E)
nephridium
done
clear
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question_answer 171) Reproductive isolation means
A)
inability to interbreed
done
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B)
breed in isolation
done
clear
C)
ability to interbreed
done
clear
D)
breeding in a species
done
clear
E)
None of the above
done
clear
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question_answer 172) The plant which gives agar-agar is
A)
Laminaria
done
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B)
Chara
done
clear
C)
Sargassum
done
clear
D)
Gelidium
done
clear
E)
Cephaleuros
done
clear
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question_answer 173) Rhythmic heart beat is maintained by a highly specialized excitatory and conductive system. The correct sequence of events will be?
A)
Atrio-ventricular node-bundle of His-Sino-atrio node-network of Purkinje fibres
done
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B)
Network of Purkinje fibres-Atrio-ventricular node-Sino-Atrio node-bundle of His
done
clear
C)
Atrio-ventricular node-Sino-Atrio node-bundle of His-Purkinje fibres
done
clear
D)
Sino-atrial node-Atrio-ventricular node- bundle of His-Purkinje fibres
done
clear
E)
Sino-atrial node-Atrio-ventricular node- Purkinje fibres-bundle of His
done
clear
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question_answer 174) Okazaki fragments are joined in a correct sequence by
A)
DNA polymerase
done
clear
B)
DNA ligase
done
clear
C)
RNA polymerase
done
clear
D)
primase
done
clear
E)
helicase
done
clear
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question_answer 175) The muscle band that remains unchanged during contraction and relaxation of the skeletal muscle is
A)
1
done
clear
B)
H
done
clear
C)
A
done
clear
D)
A line
done
clear
E)
H and Z line
done
clear
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question_answer 176) Hypothalamus does not control
A)
hunger and satiety
done
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B)
thermo regulation
done
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C)
ibido
done
clear
D)
creative thinking and consciousness
done
clear
E)
osomo regulation
done
clear
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question_answer 177) A gland which gradually atrophies at the age of 14-16 due to the activities of sex gland is
A)
thyroid
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B)
parathyroid
done
clear
C)
pancreas
done
clear
D)
pineal
done
clear
E)
thymus
done
clear
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question_answer 178) Rate of breathing is controlled by
A)
the amount of freely available oxygen
done
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B)
carbon dioxide
done
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C)
muscular functions of the body
done
clear
D)
stress
done
clear
E)
All of the above
done
clear
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question_answer 179) You are watching a horror move and you notice your heart is beating fast and mouth is dry. It is because of
A)
fight and flight response
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B)
autonomic nervous system
done
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C)
sympathetic nervous system
done
clear
D)
para sympathetic nervous system
done
clear
E)
Both and
done
clear
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question_answer 180) In males testes are contained in the scrotal sacs because
A)
other organs do not make space for the testes in the abdominal cavity
done
clear
B)
testes in the abdomen will hamper maturation of sperms
done
clear
C)
it provides temperature that is slightly lower than body temperature required for formation of functional sperms
done
clear
D)
it facilitates ejaculation
done
clear
E)
testes in the abdomen will accelerate maturation of sperms
done
clear
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