question_answer 1) The position of the particle moving along Y-axis is given as \[y=A{{t}^{2}}-B{{t}^{3}},\] where y is measured in metre and t in second. Then the dimensions of B is
A)
\[[L{{T}^{-2}}]\]
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B)
\[[L{{T}^{-1}}]\]
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C)
\[[L{{T}^{-3}}]\]
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D)
\[[ML{{T}^{-2}}]\]
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question_answer 2) A conveyor belt is moving horizontally at a speed of 4 m/s. A box of mass 20 kg is gently laid on it. It takes 0.1s for the box to come to rest. If the belt continues to move uniformly, then the distance moved by the box on the conveyor belt is
A)
zero
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B)
0.2 m
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C)
0.4 m
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D)
0.8 m
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question_answer 3) An open knife edge of mass m is dropped from a height h on a wooden floor. If the blade penetrates s into the wood the average resistance offered by the wood to the blade is
A)
\[Mg\]
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B)
\[Mg\left( \frac{h}{s} \right)\]
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C)
\[Mg\left( 1-\frac{h}{s} \right)\]
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D)
\[Mg{{\left( 1+\frac{h}{s} \right)}^{2}}\]
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question_answer 4) Energy required to accelerate a car from 10 m/s to 20 m/s compared with that required to accelerate it from 0 to 10 m/s is
A)
twice
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B)
thrice
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C)
four times
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D)
same
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question_answer 5) A solid sphere of mass 2 kg rolls up a \[30{}^\circ \] incline with an initial speed of 10 m/s. The maximum height reached by the sphere is \[(g=10\,m\text{/}{{s}^{2}})\]
A)
3.5 m
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B)
7.0 m
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C)
10.5 m
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D)
14.0 m
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question_answer 6) Two satellites are moving in the same circular orbit around the earth. They must have the same
A)
mass
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B)
angular momentum
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C)
kinetic energy
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D)
speed
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question_answer 7) A planet having average surface temperature \[{{T}_{0}}\]at an average distance d from the sun. Assuming that the planet receives radiant energy from the sun only and it loses radiant energy only from the surface and neglecting all other atmospheric effects we conclude
A)
\[{{T}_{0}}\propto {{d}^{2}}\]
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B)
\[{{T}_{0}}\propto {{d}^{-2}}\]
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C)
\[{{T}_{0}}\propto {{d}^{1/2}}\]
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D)
\[{{T}_{0}}\propto {{d}^{-1/2}}\]
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question_answer 8) Time period of a simple pendulum is T. If its length increases by 2%, the new time period becomes
A)
0.98 T
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B)
1.02 T
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C)
0.99 T
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D)
1.01 T
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question_answer 9) A boat of anchor is rocket by waves of velocity 25 m/s having crests 100 m apart. They reach the boat once every
A)
4.0 s
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B)
8.0 s
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C)
2.0 s
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D)
0.25 s
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question_answer 10) Two point charges +2C and +6C repel each other with a force of 12 N. If a charge of -2C is given to each of these charges the force will now be
A)
zero
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B)
8 N (attractive)
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C)
8 N (repulsive)
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D)
None of these
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question_answer 11)
The equivalent resistance between A and B (of the circuit shown) is
A)
4.5\[\Omega \]
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B)
12\[\Omega \]
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C)
5.4\[\Omega \]
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D)
20\[\Omega \]
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question_answer 12) A 2 kW boiler used for 1 h/day consumes the following electrical energy in thirty days
A)
60 unit
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B)
120 unit
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C)
15 unit
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D)
\[6\times {{10}^{4}}\]unit
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question_answer 13) Two long straight wires are set parallel to each other at separation r and each carries a current I in the same direction. The strength of the magnetic field at any point midway between the two wires is
A)
\[\frac{{{\mu }_{0}}I}{\pi r}\]
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B)
\[\frac{2{{\mu }_{0}}I}{\pi r}\]
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C)
\[\frac{{{\mu }_{0}}I}{2\pi r}\]
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D)
zero
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question_answer 14) A inductive coil has a resistance of 100\[\Omega \]. When an AC signal of frequency 1000 Hz is applied to the coil, the voltage leads the current by\[45{}^\circ \]. The inductance of the coil is
A)
\[\frac{1}{10\pi }\]
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B)
\[\frac{1}{20\pi }\]
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C)
\[\frac{1}{40\pi }\]
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D)
\[\frac{1}{60\pi }\]
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question_answer 15) A boy stands straight in front of a mirror at a distance of 30 cm from it. He sees his erect image whose height is\[\frac{1}{5}\]of his real height. The mirror he is using, is
A)
plane
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B)
convex
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C)
concave
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D)
plano-concave
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question_answer 16) In the depletion region of an unbiased p-n junction diode, there are
A)
only electrons
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B)
only holes
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C)
both electrons and holes
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D)
only fixed ions
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question_answer 17) The condition under which vectors \[(\overrightarrow{a}+\overrightarrow{b})\] and \[(\overrightarrow{a}-\overrightarrow{b})\] should be at right angles to each other is
A)
\[\overrightarrow{a}\ne \overrightarrow{b}\]
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B)
\[\overrightarrow{a}\cdot \overrightarrow{b}=0\]
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C)
\[|\overrightarrow{a}|\,\,=\,\,|\overrightarrow{b}|\]
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D)
\[\overrightarrow{a}\cdot \overrightarrow{b}=1\]
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question_answer 18) The error in the measurement of radius of the sphere is 0.3%. What is the permissible error in its surface area?
A)
0.6%
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B)
1.2%
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C)
1.8%
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D)
2.4%
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question_answer 19) A gas is heated at constant pressure. The fraction of heat supplied used for external work is
A)
\[\frac{1}{\gamma }\]
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B)
\[\left( 1-\frac{1}{\gamma } \right)\]
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C)
\[\gamma -1\]
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D)
\[\left( 1-\frac{1}{{{\gamma }^{2}}} \right)\]
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question_answer 20) The maximum displacement of the particle executing SHM is 1 cm and the maximum acceleration is\[{{(1.57)}^{2}}cm\text{/}{{s}^{2}}.\]Its time period is
A)
0.25 s
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B)
4.0 s
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C)
1.57 s
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D)
3.14 s
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question_answer 21) The equation of a wave travelling on a string is \[y=4\,\sin \left[ \frac{\pi }{2}\left( 8t-\frac{x}{8} \right) \right],\] where x, y are in cm and t in second. The velocity of the wave is
A)
64 cm/s, in - x direction
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B)
32 cm/s, in - x direction
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C)
32 cm/s, in + x direction
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D)
64 cm/s, in + x direction
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question_answer 22)
In the figure, the equivalent capacitance between A and B is
A)
3.75\[\mu F\]
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B)
5.25\[\mu F\]
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C)
6.5\[\mu F\]
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D)
10.5\[\mu F\]
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question_answer 23) Two bulbs 100 W, 250 V and 200 W, 250 V are connected in parallel across a 500 V line. Then
A)
100 W bulb will be fused
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B)
200 W bulb will be fused
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C)
both bulbs will be fused
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D)
no bulb will be fused
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question_answer 24) A long solenoid has 20 turns/cm. The current necessary to produce a magnetic field of 20 mT inside the solenoid is approximately
A)
1 A
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B)
2 A
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C)
4 A
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D)
8 A
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question_answer 25) The inductance of a coil is proportional to
A)
its length
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B)
the number of turns
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C)
the resistance of the coil
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D)
the square of the number of turns
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question_answer 26) A photosensitive surface is receiving light of wavelength 5000\[\overset{\text{o}}{\mathop{\text{A}}}\,\] at the rate of\[{{10}^{-7}}\,J\text{/}s.\]. The number of photons ejected per second is
A)
\[2.5\times {{10}^{12}}\]
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B)
\[2.5\times {{10}^{11}}\]
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C)
\[2.5\times {{10}^{10}}\]
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D)
\[2.5\times {{10}^{9}}\]
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question_answer 27) Two discs have same mass and same thickness. Their materials are of densities \[{{\rho }_{1}}\] and\[{{\rho }_{2}}\]. The ratio of their moments of inertia about central axis will be
A)
\[{{\rho }_{1}}{{\rho }_{2}}:1\]
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B)
\[1:{{\rho }_{1}}{{\rho }_{2}}\]
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C)
\[{{\rho }_{1}}:{{\rho }_{2}}\]
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D)
\[{{\rho }_{2}}:{{\rho }_{1}}\]
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question_answer 28) The Youngs modulus of the material of the wire of length \[L\] and radius r is\[Y\,N\text{/}{{m}^{2}}\]. If the length is reduced to \[L\text{/}2\] and radius r/2, the Youngs modulus will be
A)
Y/2
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B)
Y
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C)
2Y
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D)
4Y
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question_answer 29) A body floats with one-third of its volume outside water and 3/4 of its volume outside another liquid. The density of the other liquid is
A)
\[\frac{9}{4}g\text{/}cc\]
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B)
\[\frac{4}{0}g\text{/}cc\]
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C)
\[\frac{8}{3}g\text{/}cc\]
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D)
\[\frac{3}{8}g\text{/}cc\]
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question_answer 30) The terminal velocity of small-sized spherical body of radius r falling vertically in a viscous liquid is given by the following proportionality
A)
\[1\text{/}{{r}^{2}}\]
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B)
\[1\text{/}r\]
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C)
\[r\]
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D)
\[{{r}^{2}}\]
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question_answer 31) The reading of a manometer fitted to a closed tap is \[3.5\times {{10}^{5}}N\text{/}{{m}^{2}}.\] If the valve is opened, the reading of the manometer falls to \[3.5\times {{10}^{5}}N\text{/}{{m}^{2}}.\] The velocity of water is
A)
1 m/s
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B)
10 m/s
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C)
100 m/s
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D)
0.1 m/s
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question_answer 32) One litre of an ideal gas at \[27{}^\circ C\] is heated at a constant pressure to\[297{}^\circ C\]. Then, the final volume is approximately
A)
1.2 L
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B)
1.9 L
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C)
19 L
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D)
2.4 L
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question_answer 33) Coefficient of cubical expansion of water is zero at
A)
\[0{}^\circ C\]
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B)
\[4{}^\circ C\]
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C)
\[15.5{}^\circ C\]
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D)
\[100{}^\circ C\]
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question_answer 34) A cylindrical conductor is placed near another. positively charged conductor; The net charge acquired by the cylindrical conductor will be
A)
positive only
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B)
negative only
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C)
zero
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D)
either positive or negative
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question_answer 35) The ratio of areas between the electron orbits for the first excited state to the ground state for the hydrogen atom is
A)
2 : 1
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B)
4 : 1
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C)
8 : 1
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D)
16 : 1
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question_answer 36) An electron, accelerated by a potential difference V, has de-Broglie wavelength\[\lambda .\] If the electron is accelerated by a potential difference 4V, its de-Broglie wavelength will be
A)
\[2\lambda \]
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B)
\[4\lambda \]
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C)
\[\lambda \text{/}2\]
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D)
\[\lambda \text{/}4\]
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question_answer 37) A convex lens of focal length 40 cm is in contact with a concave lens of focal length 25 cm. The power of the combination in dioptre is
A)
- 1.5
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B)
- 6.5
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C)
+ 6.5
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D)
+ 6.67
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question_answer 38) A material particle with a rest mass \[{{m}_{0}}\] is moving with speed of light c. The de-Broglie wavelength associated is given by
A)
\[\frac{h}{{{m}_{0}}c}\]
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B)
\[\frac{{{m}_{0}}c}{h}\]
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C)
zero
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D)
infinite
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question_answer 39) The impedance of a circuit consists of \[3\Omega \] resistance and \[4\Omega \] resistance. The power factor of the circuit is
A)
0.4
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B)
0.6
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C)
0.8
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D)
1.0
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question_answer 40) A glass has refractive index \[\frac{3}{2}\] and water has refractive index\[\frac{4}{3}\]. If the speed of light in glass is \[2\times {{10}^{8}}m\text{/}s,\] the speed of light in water in m/s is
A)
\[1.5\times {{10}^{6}}\]
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B)
\[1.78\times {{10}^{8}}\]
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C)
\[2.25\times {{10}^{8}}\]
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D)
\[2.67\times {{10}^{8}}\]
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question_answer 41) A bulb is placed between two plane mirrors inclined at an angle of \[60{}^\circ \]. The number of images formed is
A)
5
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B)
6
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C)
4
done
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D)
3
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question_answer 42) A piece of semiconductor is connected in series in an electric circuit. On increasing the temperature, the current in the circuit will
A)
decrease
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B)
remain unchanged
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C)
increase
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D)
stop flowing
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question_answer 43) If the wavelength of the first line of the Balmer series of hydrogen is 6561\[\overset{\text{o}}{\mathop{\text{A}}}\,\], the wavelength of the second line of the series should be
A)
13122 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
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B)
3280 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
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C)
4860 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
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D)
2187 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
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question_answer 44) Activity of a radioactive element decreased to one third of original activity \[{{R}_{0}}\] in 9 yr. After further 9 yr, its activity will be
A)
\[{{R}_{0}}\]
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B)
\[\frac{2}{3}{{R}_{0}}\]
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C)
\[\frac{{{R}_{0}}}{9}\]
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D)
\[\frac{{{R}_{0}}}{6}\]
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question_answer 45) In a potentiometer experiment, the galvano-meter shows no deflection when a cell is connected across 60 cm of the potentiometer wire. If the cell is shunted by a resistance of 6\[\Omega \], the balance is obtained across 50 cm of the wire. The internal resistance of the cell is
A)
0.50
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B)
0.60
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C)
1.20
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D)
1.50
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question_answer 46) A nuclear reaction given by \[{}_{Z}{{X}^{A}}\xrightarrow{{}}{}_{Z+1}{{Y}^{A}}+{}_{-1}{{e}^{0}}+\bar{v}\]represents.
A)
\[\gamma \]-decay
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B)
fusion
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C)
fission
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D)
\[\beta \]-decay
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question_answer 47)
Two batteries of emf 4 V and 8 V with internal resistance 1\[\Omega \] and 2\[\Omega \] are connected in a circuit with a resistance of 9\[\Omega \] as shown in figure. The current and potential difference between the points P and Q are
A)
\[\frac{1}{3}A\]and 3 V
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B)
\[\frac{1}{6}A\] and 4V
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C)
\[\frac{1}{9}A\]and 9 V
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D)
\[\frac{1}{2}A\]and 12 V
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question_answer 48) Light of wavelength 4000\[\overset{\text{o}}{\mathop{\text{A}}}\,\] is incident on a sodium surface for which the threshold wavelength of photoelectron is 5420\[\overset{\text{o}}{\mathop{\text{A}}}\,\]. The work function of sodium is
A)
4.58 eV
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B)
2.28 eV
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C)
1.14eV
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D)
0.57 eV
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question_answer 49) In a Youngs double slit experiment, the slit separation is 1 mm and the screen in 1 m from the slit. For a monochromatic light of wavelength 500 nm, the distance of 3rd minima from central maxima is
A)
0.50 mm
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B)
1.25 mm
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C)
1.50mm
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D)
1.75mm
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question_answer 50) In order to double the frequency of the fundamental note emitted by a stretched string, the length is reduced to \[\frac{3}{4}\]th of the original length and the tension is changed. The factor by which the tension is to be changed, is
A)
\[\frac{3}{8}\]
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B)
\[\frac{2}{3}\]
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C)
\[\frac{8}{9}\]
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D)
\[\frac{9}{4}\]
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question_answer 51) In a given atom no two electrons can have the same values for all the four quantum numbers. This is called
A)
Hunds rule
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B)
Aufbaus principle
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C)
Uncertainty principle
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D)
Paulis exclusion principle
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question_answer 52) For reaction, \[2NOCl(g)\rightleftharpoons 2NO(g)+C{{l}_{2}}(g),\]\[{{K}_{c}}\]at \[427{}^\circ C\] is \[3\times {{10}^{-6}}L\,\,\text{mo}{{\text{l}}^{-1}}\]. The value of \[{{K}_{p}}\]is nearly
A)
\[7.5\times {{10}^{-5}}\]
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B)
\[2.5\times {{10}^{-5}}\]
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C)
\[2.5\times {{10}^{-4}}\]
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D)
\[1.72\times {{10}^{-4}}\]
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question_answer 53) What is the order of a reaction which has a rate expression, rate\[=k{{(A)}^{3/2}}{{(B)}^{-1}}?\]
A)
3/2
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B)
½
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C)
0
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D)
None of these
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question_answer 54) Which of th following compounds is highest covalent?
A)
\[LiCl\]
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B)
\[LiF\]
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C)
\[LiBr\]
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D)
\[LiI\]
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question_answer 55) Shape of\[Xe{{F}_{4}}\]molecule is
A)
linear
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B)
pyramidal
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C)
tetrahedral
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D)
square planar
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question_answer 56) Which one of the following elements has the highest ionisation energy?
A)
\[[Ne]\,3{{s}^{2}}3{{p}^{1}}\]
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B)
\[[Ne]\,3{{s}^{2}}3{{p}^{2}}\]
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C)
\[[Ne]\,3{{s}^{2}}3{{p}^{3}}\]
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D)
\[[Ar]\,3{{d}^{10}},\,4{{s}^{2}}4{{p}^{2}}\]
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question_answer 57) Important ore of zinc is
A)
calamine
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B)
cryolite
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C)
cassiterite
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D)
malachite
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question_answer 58) Nesslers reagent is
A)
\[KHg{{I}_{4}}\]
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B)
\[{{K}_{2}}Hg{{I}_{4}}+N{{H}_{4}}OH\]
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C)
\[{{K}_{2}}Hg{{I}_{4}}+KOH\]
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D)
\[KHg{{I}_{4}}+N{{H}_{4}}OH\]
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question_answer 59) Potassium is kept in
A)
alcohol
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B)
water
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C)
kerosene
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D)
liquid ammonia
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question_answer 60) Which of the following oxides of nitrogen is the anhydride of nitrous acid?
A)
\[NO\]
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B)
\[{{N}_{2}}{{O}_{3}}\]
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C)
\[{{N}_{2}}{{O}_{4}}\]
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D)
\[{{N}_{2}}{{O}_{5}}\]
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question_answer 61) Which one of the given below is a pseudohalide?
A)
\[C{{N}^{-}}\]
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B)
\[ICl\]
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C)
\[I{{F}_{5}}\]
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D)
\[I_{3}^{-}\]
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question_answer 62) Acidified potassium permanganate solution is decolourised by
A)
bleaching powder
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B)
white vitriol
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C)
Mohrs salt
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D)
microcosmic salt
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question_answer 63) The pressure and temperature of 4\[d{{m}^{3}}\] of carbon dioxide gas are doubled. Then, volume of carbon dioxide gas would be
A)
2\[d{{m}^{3}}\]
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B)
3\[d{{m}^{3}}\]
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C)
4\[d{{m}^{3}}\]
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D)
8\[d{{m}^{3}}\]
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question_answer 64) An fee unit cell of aluminium contains the equivalent of how many atoms?
A)
1
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B)
2
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C)
3
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D)
4
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question_answer 65) Hesss law deals with
A)
changes in heat of reaction
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B)
rate of reaction
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C)
equilibrium constant
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D)
influence of pressure on volume of gas
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question_answer 66) Hydrolysis of sodium acetate will give
A)
acidic solution
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B)
basic solution
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C)
neutral solution
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D)
normal solution
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question_answer 67) Which of the following is not a non- electrolyte?
A)
Acetic acid
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B)
Glucose
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C)
Ethanol
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D)
Urea
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question_answer 68) The oxidation state of S in\[{{H}_{2}}{{S}_{2}}{{O}_{8}}\] is
A)
+ 2
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B)
+ 4
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C)
+ 6
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D)
+ 7
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question_answer 69) Which of the following free radicals is most stable?
A)
Primary
done
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B)
Methyl
done
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C)
Secondary
done
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D)
Tertiary
done
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question_answer 70) Which of the following has highest knocking property?
A)
Aromatic hydrocarbons
done
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B)
Olefins
done
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C)
Branched chain paraffins
done
clear
D)
Straight chain paraffins
done
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question_answer 71) Which of the following is the most stable alkene?
A)
\[{{R}_{2}}C=C{{R}_{2}}\]
done
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B)
\[RCH=CHR\]
done
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C)
\[RCH=C{{H}_{2}}\]
done
clear
D)
\[C{{H}_{2}}=C{{H}_{2}}\]
done
clear
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question_answer 72) From Williamsons synthesis preparation of which of the following is possible?
A)
Only symmetrical ethers
done
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B)
Only asymmetrical ethers
done
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C)
Both (a) and (b)
done
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D)
None of the above
done
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question_answer 73) Dry heating of calcium acetate gives
A)
acetaldehyde
done
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B)
ethane
done
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C)
acetic acid
done
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D)
acetone
done
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View Answer play_arrow
question_answer 74) Formaldehyde reacts with ammonia to give urotropine that is
A)
\[{{(C{{H}_{2}})}_{6}}{{N}_{4}}\]
done
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B)
\[{{(C{{H}_{2}})}_{4}}{{N}_{3}}\]
done
clear
C)
\[{{(C{{H}_{2}})}_{6}}{{N}_{6}}\]
done
clear
D)
\[{{(C{{H}_{2}})}_{3}}{{N}_{3}}\]
done
clear
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question_answer 75) Aniline reacts with acetaldehyde to form
A)
Schiffs base
done
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B)
carbyl amine
done
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C)
immine
done
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D)
None of these
done
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question_answer 76) The reagent which forms crystalline osazone derivative when reacted with glucose, is
A)
Fehling solution
done
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B)
phenyl hydrazine
done
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C)
Benedict solution
done
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D)
hydroxyl amine
done
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question_answer 77) Chloramine-T is a
A)
disinfectant
done
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B)
antiseptic
done
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C)
analgesic
done
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D)
antipyretic
done
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question_answer 78) Maximum entropy will be in which of the following?
A)
Ice
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B)
Liquid water
done
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C)
Snow
done
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D)
Water vapours
done
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question_answer 79) Which of the, following acts as an oxidising as well as reducing agent?
A)
\[N{{a}_{2}}O\]
done
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B)
\[N{{a}_{2}}{{O}_{2}}\]
done
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C)
\[NaN{{O}_{3}}\]
done
clear
D)
\[NaN{{O}_{2}}\]
done
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question_answer 80) Maximum number of hydrogen bonds in\[{{H}_{2}}O\]. is
A)
1
done
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B)
2
done
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C)
3
done
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D)
4
done
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question_answer 81) Number of isomers possible for\[{{C}_{4}}{{H}_{8}}O\]is
A)
3
done
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B)
4
done
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C)
5
done
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D)
6
done
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question_answer 82) The ability of a given substance to assume two or more crystalline structure is called
A)
amorphism
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B)
isomorphism
done
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C)
polymorphism
done
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D)
isomerism
done
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question_answer 83) A cricket ball of 0.5 kg is moving with a velocity of 100 m/s. The wavelength associated with its motion is
A)
\[1\text{/}100\,cm\]
done
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B)
\[6.6\times {{10}^{-34}}m\]
done
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C)
\[1.32\times {{10}^{-35}}m\]
done
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D)
\[6.6\times {{10}^{-28}}m\]
done
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question_answer 84) At \[90{}^\circ C,\]pure water has\[{{H}_{3}}{{O}^{+}}\]ion concentration of \[{{10}^{-6}}mol\text{/}L.\] The\[{{K}_{w}}\]at\[90{}^\circ C\] is
A)
\[{{10}^{-6}}\]
done
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B)
\[{{10}^{-14}}\]
done
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C)
\[{{10}^{-12}}\]
done
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D)
\[{{10}^{-8}}\]
done
clear
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question_answer 85) Aspirin is chemically
A)
methyl benzoate
done
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B)
ethyl salicylate
done
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C)
acetyl salicylic acid
done
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D)
o-hydroxy benzoic acid
done
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question_answer 86) Synthetic polymer which resembles natural rubber, is
A)
neoprene
done
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B)
chloroprene
done
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C)
glyptal
done
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D)
nylon
done
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question_answer 87) The reduction of which of the following compounds would yield secondary amine?
A)
Alkyl nitrile.
done
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B)
Carbylamine
done
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C)
Primary amine
done
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D)
Secondary nitro compound
done
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question_answer 88) Which of the following aldehydes is most reactive?
A)
\[{{C}_{6}}{{H}_{5}}-CHO\]
done
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B)
\[C{{H}_{3}}CHO\]
done
clear
C)
\[HCHO\]
done
clear
D)
All the equally reactive
done
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View Answer play_arrow
question_answer 89) Which of the following is dihydric alcohol?
A)
Glycerol
done
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B)
Ethylene glycol
done
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C)
Carechol
done
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D)
Resorcinol
done
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question_answer 90) Ethyl alcohol is heated with cone \[{{H}_{2}}S{{O}_{4}}.\] The product formed is
A)
\[C{{H}_{3}}-\overset{O}{\mathop{\overset{\mathbf{||}}{\mathop{C}}\,}}\,-O{{C}_{2}}{{H}_{5}}\]
done
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B)
\[{{C}_{2}}{{H}_{6}}\]
done
clear
C)
\[{{C}_{2}}{{H}_{4}}\]
done
clear
D)
\[{{C}_{2}}{{H}_{2}}\]
done
clear
View Answer play_arrow
question_answer 91) In the first order reaction, the concentration of the reactants is reduced to 25% in one hour. The half-life period of the reaction is
A)
2h
done
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B)
4h
done
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C)
1/2 h
done
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D)
1/4 h
done
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question_answer 92) The movement of solvent molecules through a semipermeable membrane is called
A)
electrolysis
done
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B)
electrophoresis
done
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C)
osmosis
done
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D)
cataphoresis
done
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question_answer 93) Which of the following is a primary halide?
A)
Isopropyl iodide
done
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B)
Secondary butyl iodide
done
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C)
Tertiay butyl bromide
done
clear
D)
Neohexyl chloride
done
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View Answer play_arrow
question_answer 94) \[{{C}_{6}}{{H}_{5}}C{{H}_{3}}\xrightarrow{Cr{{O}_{2}}C{{l}_{2}}}Z\]In the given sequence Z is
A)
benzaldehyde
done
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B)
tolueic acid
done
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C)
phenyl acetic acid
done
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D)
benzoic acid
done
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question_answer 95) In the electrolysis of water, one faraday of electrical energy would evolve
A)
one mole of oxygen
done
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B)
one g atom of oxygen
done
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C)
8 g of oxygen
done
clear
D)
22.4 L of oxygen
done
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question_answer 96) If the half-life of an isotope X is 10 yr, its decay constant is
A)
6.932\[y{{r}^{-1}}\]
done
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B)
0.6932\[y{{r}^{-1}}\]
done
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C)
0.06932\[y{{r}^{-1}}\]
done
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D)
0.006932\[y{{r}^{-1}}\]
done
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question_answer 97) On strong heating sodium bicarbonate changes into
A)
sodium monoxide
done
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B)
sodium hydroxide
done
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C)
sodium carbonate
done
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D)
sodium peroxide
done
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question_answer 98) Aluminium reacts with caustic soda to form
A)
aluminium hydroxide
done
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B)
aluminium oxide
done
clear
C)
sodium meta aluminate
done
clear
D)
sodium tetra aluminate
done
clear
View Answer play_arrow
question_answer 99) Iron is dropped in dil. \[HN{{O}_{3}}\] it gives
A)
ferric nitrate
done
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B)
ferric nitrate and\[N{{O}_{2}}\]
done
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C)
ferrous nitrate and ammonium nitrate
done
clear
D)
ferrous nitrate and nitric oxide
done
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question_answer 100) The chief impurity present in red bauxite is
A)
\[Si{{O}_{2}}\]
done
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B)
\[F{{e}_{2}}{{O}_{3}}\]
done
clear
C)
\[{{K}_{2}}S{{O}_{4}}\]
done
clear
D)
\[NaF\]
done
clear
View Answer play_arrow
question_answer 101) Which one is related to urine concentration in mammals?
A)
Tesrosterone hormone
done
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B)
Antidiuretic hormone
done
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C)
Oxytocin honnone
done
clear
D)
All of the above
done
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question_answer 102) An enzyme that uses viral RNA as template for the synthesis of DNA is
A)
RNA polymerase
done
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B)
reverse transcriptase
done
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C)
viral nuclease
done
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D)
RNA replicase
done
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question_answer 103) The carrier which transfer the electrons in electron transport system
A)
phytochrome
done
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B)
cytochrome
done
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C)
quantasomes
done
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D)
fucoxanthin
done
clear
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question_answer 104) The source of agar-agar is
A)
Chlamydomonas
done
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B)
Chlorella.
done
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C)
Gelidium
done
clear
D)
Spirogyra
done
clear
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question_answer 105) A term helotism is used for the symbiosis of
A)
alagae and fungi
done
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B)
algae and Cycas
done
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C)
algae and bacteria
done
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D)
Pimis and fungi
done
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question_answer 106) Haploid structure of Funaria is
A)
calyptra
done
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B)
protonema
done
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C)
apophysis
done
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D)
operculum
done
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question_answer 107) In the angiosperm ovule, central cell of the embryo sac, prior to the entry of pollen tube, contains
A)
single haploid nucleus
done
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B)
one diploid and one haploid nuclei
done
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C)
two haploid polar nuclei
done
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D)
one diploid secondary nucleus
done
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View Answer play_arrow
question_answer 108) Which of the following is not an influence of auxins?
A)
Apical dominance
done
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B)
Parthenocarpy
done
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C)
Tropic movements
done
clear
D)
Bolting
done
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question_answer 109) Mycorrhiza helps in
A)
nutrition up taking
done
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B)
food manufacturing
done
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C)
disease resistance
done
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D)
disease prevention
done
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question_answer 110) Amphids are cuticular elevations on ventro tips of Ascaris, These are
A)
tangoreceptors
done
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B)
taetoreceptors
done
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C)
olfactoreceptors
done
clear
D)
chemoreceptors
done
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View Answer play_arrow
question_answer 111) Meiosis in Dryopteris takes-place during
A)
gamete formation
done
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B)
spore germination
done
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C)
zygote formation
done
clear
D)
spore formation
done
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question_answer 112) Which malaria parasite has longest incubation period?
A)
Plasmodium vivax
done
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B)
P. falciparum
done
clear
C)
P. malariae
done
clear
D)
P. ovale
done
clear
View Answer play_arrow
question_answer 113) In which group of the following would you place the plants having vascular tissue and lacking seeds?
A)
Algae
done
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B)
Fungi
done
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C)
Bryophytes
done
clear
D)
Pteridophytes
done
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question_answer 114) The poisonous fluid present in nematocyst of Hydra is
A)
venom
done
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B)
hematin
done
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C)
toxin
done
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D)
hypnotoxin
done
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question_answer 115) XXY chromosome constitution is represented by
A)
Downs syndrome
done
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B)
Turners syndrome
done
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C)
Klinefelters syndrome
done
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D)
Okazaki syndrome
done
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question_answer 116) The enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in the leguminous root nodule
A)
amminase
done
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B)
nitrogenase
done
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C)
nitrate reductase
done
clear
D)
nitrite reductase
done
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View Answer play_arrow
question_answer 117) Centromere is present at one end, the chromosome is
A)
metacentric
done
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B)
excentric
done
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C)
telocentric
done
clear
D)
apocentric
done
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question_answer 118) Xenia refers to
A)
effect of pollen on stem
done
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B)
effect of pollen on taste of fruit
done
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C)
effect of pollen on vascular tissue
done
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D)
effect of pollen on endosperm
done
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question_answer 119) Elater mechanism of spore dispersal is exhibited by
A)
Riccia
done
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B)
Funaria
done
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C)
Liverworts
done
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D)
Marchantia
done
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question_answer 120) A chemical fertilizing is produced form
A)
polar bodies
done
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B)
middle piece of sperm
done
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C)
acrosome
done
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D)
mature eggs
done
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question_answer 121) The Indian wild ass is in the category of...... by wild life protection act of government of India
A)
rare species
done
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B)
endangered species
done
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C)
endemic species
done
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D)
vulnerable species
done
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question_answer 122) Which of the following commonly called emergency gland of body?
A)
Thymus
done
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B)
Testis
done
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C)
Adrenal
done
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D)
Pituitary
done
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question_answer 123) Insectivorous plants grow in ...... deficient soil
A)
\[Na\]
done
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B)
\[N\]
done
clear
C)
\[C\]
done
clear
D)
\[{{O}_{2}}\]
done
clear
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question_answer 124) Uterine endometrium, epithelial glands and connective tissue are broken in menstrual phase. That is due to
A)
over secretion of FSH
done
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B)
lack of estrogen
done
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C)
lack of progesterone
done
clear
D)
over production of progesterone
done
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question_answer 125) The organelles, which take part in photo respiration are
A)
chloroplast, mitochondria, nucleus
done
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B)
chloroplast, mitochondria, lysosome
done
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C)
mitochondria, chloroplast, peroxisome
done
clear
D)
mitochondria, lysosome, peroxisome
done
clear
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question_answer 126) Which of the following is correctly matched pair of a certain plant family and its one example?
A)
Malvaceae-Cotton
done
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B)
Leguminosae-Mango or sunflower
done
clear
C)
Cucurbitaceae-Orange
done
clear
D)
Brassicaceae-Wheat
done
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question_answer 127) Which one of the following is a skull bone?
A)
Coracoid
done
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B)
Arytaenoid
done
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C)
Atlas
done
clear
D)
Pterygoid
done
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question_answer 128) A water fern, which is used as a green manure in rice fields is
A)
Salvinia
done
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B)
Mucor
done
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C)
Aspergillus
done
clear
D)
Azolla
done
clear
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question_answer 129) In which of the following animal, post anal tail is found?
A)
Earthworm
done
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B)
Lower invertebrate
done
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C)
Scorpion
done
clear
D)
Snake
done
clear
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question_answer 130) Apogamy is
A)
reproduction of virus
done
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B)
failure of fusion of gametes
done
clear
C)
development of bacteria
done
clear
D)
loss of function of reproduction
done
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question_answer 131) Which bacteria are utilized in gobar gas plane?
A)
Methanogens
done
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B)
Nitrifying bacteria
done
clear
C)
Ammonifying bacteria
done
clear
D)
Denitrifying bacteria
done
clear
View Answer play_arrow
question_answer 132) In photosynthesis, energy from light reaction to dark reaction is transferred in the form of
A)
ADP
done
clear
B)
ATP
done
clear
C)
RuBP
done
clear
D)
chlorophyll
done
clear
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question_answer 133) ELISA is used to detect viruses where the key reagent is
A)
DNA probe
done
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B)
RNAse
done
clear
C)
alkaline phosphatase
done
clear
D)
catalase
done
clear
View Answer play_arrow
question_answer 134) If Henles loop were absent from mammalian nephron, which of the following is to be expected?
A)
The urine will be more concentrated
done
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B)
The urine will be more dilute
done
clear
C)
There will be no urine formation
done
clear
D)
There will be hardly any change in the quality and quantity of urine formed
done
clear
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question_answer 135) Which one of the following does not act as a neurotransmitter?
A)
Acetylcholine
done
clear
B)
Epinephrine
done
clear
C)
Norepinephrine
done
clear
D)
Cortisone
done
clear
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question_answer 136) In which of the following stage, the chromosome is single, thin and like long thread?
A)
Leptotene
done
clear
B)
Zygotene
done
clear
C)
Pachytene
done
clear
D)
Diakinesis
done
clear
View Answer play_arrow
question_answer 137) \[{{C}_{4}}\]-plants differ from \[{{C}_{3}}\]-plants in respect to
A)
number of ATP used
done
clear
B)
substrate which accept the\[C{{O}_{2}}\]molecules
done
clear
C)
the final product
done
clear
D)
Both (a) and (b)
done
clear
View Answer play_arrow
question_answer 138) Gonads of Obelia occur in
A)
on blastocyst
done
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B)
in hydrula stage
done
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C)
radial canals of medusa
done
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D)
bases of tentacles of medusa
done
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View Answer play_arrow
question_answer 139) The functional xylem of dicot tree is
A)
sap wood
done
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B)
hardwood
done
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C)
heart wood
done
clear
D)
autumn wood
done
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View Answer play_arrow
question_answer 140) Botanical name of sanjeevani is
A)
Selaginella chrysocaulos
done
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B)
Selaginella bryopteris
done
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C)
Selaginella chrysorhizos
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 141) Elbow joint is
A)
ball and socket
done
clear
B)
hinge joint
done
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C)
pivot joint
done
clear
D)
saddle joint
done
clear
View Answer play_arrow
question_answer 142) The point in eye of mammals from which optic nerves and blood vessels leaves the eye ball is
A)
yellow spot
done
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B)
blind spot
done
clear
C)
pars optica
done
clear
D)
None of these
done
clear
View Answer play_arrow
question_answer 143) Cerebral hemispheres of rat are connected by
A)
corpus luteum
done
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B)
corpus callosum
done
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C)
corpus albicans
done
clear
D)
corpus spongiosum
done
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question_answer 144) The nucleolus is the site of formation of
A)
spindle fibres
done
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B)
chromosomes
done
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C)
ribosomes
done
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D)
peroxisomes
done
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View Answer play_arrow
question_answer 145) Deposition of uric acid crystals within the synovial joint causes
A)
osteoarthritis
done
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B)
rheumatoid arthritis
done
clear
C)
gout
done
clear
D)
paralysis
done
clear
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question_answer 146) X-chromosomes of female in a sex-linked inheritance case can be passed on to
A)
only female progeny
done
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B)
only male progeny
done
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C)
only in grand daughter
done
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D)
male and female progeny
done
clear
View Answer play_arrow
question_answer 147) Leaf in young condition in fern is called
A)
scale leaf
done
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B)
sporophyll
done
clear
C)
circulate ptyxis
done
clear
D)
None of these
done
clear
View Answer play_arrow
question_answer 148) What is common in photosynthesis and respiration?
A)
Light energy
done
clear
B)
\[NADP{{H}_{2}}\]
done
clear
C)
Cytochromes
done
clear
D)
\[NAD{{H}_{4}}\]
done
clear
View Answer play_arrow
question_answer 149) Smell of urine is due to the
A)
urochrome
done
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B)
urinode
done
clear
C)
urea
done
clear
D)
melanin
done
clear
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question_answer 150) Sertoli cells are involved in
A)
excretion
done
clear
B)
nutrition of sperms
done
clear
C)
respiration
done
clear
D)
All of these
done
clear
View Answer play_arrow