question_answer 1) Two simple harmonic motions A and B are given respectively by the following equations \[{{y}_{1}}=a\,\sin \,\left( \omega t+\frac{\pi }{6} \right),\] \[{{y}_{2}}=a\,\sin \,\left( \omega t+\frac{3\pi }{6} \right)\] The phase difference between the waves is
A)
\[\frac{\pi }{2}\]
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B)
\[\frac{\pi }{6}\]
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C)
\[\frac{\pi }{3}\]
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D)
zero
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question_answer 2) A stretched string of length \[l\] fixed at both ends can sustain stationary waves of wavelength \[\lambda \] given by
A)
\[\lambda =\frac{{{n}^{2}}}{2l}\]
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B)
\[\lambda =\frac{{{l}^{2}}}{2n}\]
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C)
\[\lambda =\frac{2l}{n}\]
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D)
\[\lambda =2\ln \] (Here, n is a integer)
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question_answer 3) An observer moves towards a stationary source of sound with a velocity that is one-tenth the velocity of sound. The apparent change in frequency is
A)
zero
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B)
5%
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C)
10%
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D)
0.1%
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question_answer 4) Light of wavelength \[7200\,\overset{\text{o}}{\mathop{\text{A}}}\,\] in air has a wavelength in glass \[(\mu =1.5)\] equal to
A)
\[7200\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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B)
\[4800\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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C)
\[10800\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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D)
\[6000\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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question_answer 5) When a thin convex lens is put in contact with a thin concave lens of the same focal length \[(f),\] the resultant combination has a focal length equal to
A)
\[\frac{f}{2}\]
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B)
\[2f\]
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C)
0
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D)
\[\infty \]
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question_answer 6) A cylindrical lens is required to correct
A)
myopia
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B)
presbyopia
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C)
hypermetropia
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D)
astigmatism
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question_answer 7) Which of the following phenomenona is not common to sound and light waves ?
A)
Interference
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B)
Diffraction
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C)
Polarisation
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D)
Reflection
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question_answer 8) The nearer point of hypermetropic eye is 40 cm. The lens to be used for its correction should have the power
A)
+ 1.5 D
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B)
-1.5 D
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C)
+2.5D
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D)
+0.5D
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question_answer 9) The work of Sir C.V. Raman for which he was awarded Nobel Prize was concerned with
A)
nuclear energy
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B)
scattering of light
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C)
laser
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D)
transistors
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question_answer 10) Young's double slit experiment is based on
A)
Newton's corpuscular theory of light
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B)
Huygen's wave theory
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C)
Quantum theory
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D)
All of the above
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question_answer 11) One kilowatt hour equals
A)
\[36\times {{10}^{s}}J\]
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B)
\[34\times {{10}^{s}}J\]
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C)
\[3\times {{10}^{5}}J\]
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D)
\[6\times {{10}^{s}}J\]
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question_answer 12) Velocity of electromagnetic waves in vacuum is given by
A)
\[\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}}\]
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B)
\[\frac{\sqrt{{{\mu }_{0}}}}{{{\varepsilon }_{0}}}\]
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C)
\[\frac{\sqrt{{{\varepsilon }_{0}}}}{{{\mu }_{0}}}\]
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D)
\[\frac{1}{\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}}}\]
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question_answer 13) Two spheres A and B of radii a and b respectively are at the same potential. The ratio of the surface charge densities of A to B is
A)
\[\frac{a}{b}\]
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B)
\[\frac{b}{a}\]
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C)
\[\frac{{{a}^{2}}}{{{b}^{2}}}\]
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D)
\[\frac{{{b}^{2}}}{{{a}^{2}}}\]
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question_answer 14) A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V. The potential at a distance of 2 cm from the centre of sphere is
A)
zero
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B)
10 V
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C)
4V
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D)
5V
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question_answer 15)
The equivalent capacitance between points A and B in the given figure, is
A)
\[\frac{36}{13\mu F}\]
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B)
\[2\mu F\]
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C)
\[1\mu F\]
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D)
\[3\mu F\]
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question_answer 16) An electric bulb is rated 220 V and 100 W. Power consumed by it when operated on 110 V is
A)
50 W
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B)
75 W
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C)
90 W
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D)
25 W
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question_answer 17) The temperature coefficient of resistance of a wire is \[0.00125\text{ }per\text{ }{}^\circ C\]. At 300 K temperature its resistance is \[1\Omega .\] The resistance of the wire will be \[2\Omega \] at
A)
1154 K
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B)
1100 K
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C)
1400 K
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D)
1127 K
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question_answer 18) How much heat is produced by 1500 W heater in 7 min ?
A)
1.5 kcal
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B)
15 kcal
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C)
150 kcal
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D)
1500 kcal
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question_answer 19)
Five equal resistors, each equal to r are connected as shown in the figure, then the equivalent resistance between points A and B
A)
r
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B)
5r
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C)
\[\frac{r}{5}\]
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D)
\[\frac{2r}{3}\]
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question_answer 20) A solenoid of 1.5 m length and 4.0 cm diameter possesses 10 turns/cm. A current of 5 A is flowing through it. The magnetic induction a axis inside the solenoid is
A)
\[\text{2}\,\text{ }\!\!\pi\!\!\text{ }\,\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-3}}}\,\text{T}\]
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B)
\[\text{2}\,\text{ }\!\!\pi\!\!\text{ }\,\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-5}}}\,\text{T}\]
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C)
\[\text{2}\,\text{ }\!\!\pi\!\!\text{ }\,\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-3}}}\,\text{T}\]
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D)
\[\text{2}\,\text{ }\!\!\pi\!\!\text{ }\,\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-5}}}\,\text{T}\]
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question_answer 21) The unit of intensity of magnetisation (\[I\]) is
A)
A/m
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B)
A-m2
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C)
A-m
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D)
W/m
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question_answer 22) The resistance of an ideal voltmeter is
A)
low
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B)
high
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C)
infinite
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D)
zero
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question_answer 23) The inductive time constant in an electrical circuit is
A)
\[LR\]
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B)
\[\frac{L}{R}\]
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C)
\[\sqrt{\frac{L}{R}}\]
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D)
\[\frac{R}{L}\]
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question_answer 24) The relation between triode constants is
A)
\[\mu \times {{r}_{P}}\times {{g}_{m}}=1\]
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B)
\[\mu \frac{{{r}_{P}}}{{{g}_{m}}}\]
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C)
\[\mu \frac{{{g}_{m}}}{{{r}_{P}}}\]
done
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D)
\[\mu ={{r}_{P}}\times {{g}_{m}}\]
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question_answer 25) An n-type semiconductor is formed
A)
when germanium crystal is doped with an impurity containing 3 valence electrons
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B)
when germanium crystal is doped with an impurity containing 5 valence electrons
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C)
from pure germanium
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D)
from pure silicon
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question_answer 26) In a common base configuration; (transistor circuit) \[{{I}_{E}}=1\]mA, \[{{I}_{c}}=\] 0.95mA. The value of base current is
A)
1.95mA
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B)
0.05mA
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C)
1.05mA
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D)
0.95mA
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question_answer 27) The work function for aluminium surface is 4.2eV. The cut-off wavelength for the photoelectric effect is
A)
\[2955\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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B)
\[4200\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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C)
\[2000\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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D)
\[1000\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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question_answer 28) X-rays are being produced in a tube operating at 105V The velocity of X-rays produced is
A)
\[3\times {{10}^{8}}m/s\]
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B)
\[2.8\times {{10}^{8}}m/s\]
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C)
\[3.1\times {{10}^{8}}m/s\]
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D)
\[3\times {{10}^{10}}m/s\]
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question_answer 29) If the potential energy of the electron in the hydrogen atom is \[\frac{-K{{e}^{2}}}{r},\]its Kinetic energy is
A)
\[\frac{-K{{e}^{2}}}{2r}\]
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B)
\[\frac{-K{{e}^{2}}}{r}\]
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C)
\[\frac{K{{e}^{2}}}{2r}\]
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D)
\[\frac{K{{e}^{2}}}{r}\]
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question_answer 30) The decay constant of radium is \[4.28\times {{10}^{-4}}\] per \[yr\]Its half-life is approximately
A)
\[1250\,yr\]
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B)
\[1620\,yr\]
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C)
\[200\,yr\]
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D)
\[60\,yr\]
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question_answer 31) Dimensions of the three physical quantities in which En up are the same ?
A)
Work, energy, force
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B)
Velocity, momentum, impulse
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C)
Potential energy, kinetic energy, momentum
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D)
Pressure, stress, coefficient of elasticity
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question_answer 32) One nanometre is equal to
A)
\[\text{1}{{\text{0}}^{\text{9}}}\text{mm}\]
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B)
\[\text{1}{{\text{0}}^{\text{-6}}}\text{cm}\]
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C)
\[\text{1}{{\text{0}}^{\text{-7}}}\text{cm}\]
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D)
\[\text{1}{{\text{0}}^{\text{-9}}}\text{cm}\]
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question_answer 33)
A life is going up. The variation in the speed of the lift is as given in the graph
A)
3.6m
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B)
28.8m
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C)
36.0m
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D)
40.0m
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question_answer 34)
34. A2 kg mass is suspended using two strings AB CD as shown in figure
A)
part AB of the string breaks
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B)
part CD of the string breaks
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C)
no part of the string breaks
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D)
both the strings will simultaneously break
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question_answer 35)
A body of mass 2 kg slides down a curved track which is quadrant of a circle of radius 1m (figure)
A)
4.43 m/s
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B)
2 m/s
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C)
0.5 m/s
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D)
19.6 m/s
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question_answer 36) A lift moving up comes to rest with a retardation. The weight of the man in it
A)
increases
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B)
decreases
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C)
remains constant
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D)
either increases or decreases
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question_answer 37) A car of mass m is taking a circular turn of radius r on a frictional level road with a speed v. In order that the car does not skid (\[\mu =\] coefficient of friction)
A)
\[\frac{m{{v}^{2}}}{r}\ge \mu mg\]
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B)
\[\frac{m{{v}^{2}}}{r}\le \mu mg\]
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C)
\[\frac{m{{v}^{2}}}{r}=\mu mg\]
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D)
\[\frac{v}{r}=\mu g\]
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question_answer 38) Moment of inertia of a rod of length\[l\] about an axis passing through its edge is (mass of the rod M)
A)
\[\frac{M{{l}^{2}}}{12}\]
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B)
\[\frac{M{{l}^{2}}}{3}\]
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C)
\[\frac{M{{l}^{2}}}{2}\]
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D)
\[\frac{M{{l}^{2}}}{4}\]
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question_answer 39) Two bodies of masses \[{{m}_{1}}\] and \[{{m}_{2}}\] have equal momentum. Their kinetic energies \[{{E}_{1}}\] and \[{{E}_{2}}\] are in the ratio
A)
\[\sqrt{{{m}_{1}}:}\sqrt{{{m}_{2}}}\]
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B)
\[{{m}_{1}}:{{m}_{2}}\]
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C)
\[{{m}_{2}}:{{m}_{1}}\]
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D)
\[m_{1}^{2}:m_{2}^{2}\]
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question_answer 40) Time period of revolution of a satellite around a planet of radius R is T. The period of revolution around another planet whose radius is 3R is
A)
T
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B)
3T
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C)
9T
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D)
\[3\sqrt{3}T\]
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question_answer 41) The total energy of the body executing simple harmonic motion (SHM) is E. Then the kinetic energy when the displacement is half of the amplitude is
A)
\[\frac{E}{2}\]
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B)
\[\frac{E}{4}\]
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C)
\[\frac{3E}{4}\]
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D)
\[\frac{\sqrt{3E}}{4}\]
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question_answer 42) An ice-berg is floating in sea water. What percentage of volume of the ice-berg is above the water ? (Given : relative density of sea water 1.2 and relative density or ice = 0.9)
A)
20%
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B)
25%
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C)
33.3%
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D)
50%
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question_answer 43) A cylindrical vessel is filled with a liquid of density d upto a height h, if the vessel is at rest, then the pressure at the bottom is
A)
zero
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B)
\[\frac{h}{2}dg\]
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C)
\[hdg\]
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D)
\[2hdg\]
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question_answer 44) 44. A thick copper rope of density \[1.5\times {{10}^{3}}kg/{{m}^{3}}\]and young's modulus \[5\times {{10}^{6}}N/{{m}^{2}},\text{ }8m\] in length is hung from the ceiling of a room. The increase in its length due to its own weight is
A)
\[\text{9}\text{.6 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-5}}}\text{m}\]
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B)
\[\text{19}\text{.6 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-7}}}\text{m}\]
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C)
\[\text{19}\text{.2 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-7}}}\text{m}\]
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D)
\[\text{9}\text{.6}\,\text{m}\]
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question_answer 45) The excess of pressure due to surface tension in a spherical liquid drop of radius R is proportional To
A)
\[R\]
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B)
\[{{R}^{3}}\]
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C)
\[{{R}^{-2}}\]
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D)
\[{{R}^{-1}}\]
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question_answer 46) If one mole of a monoatomic gas \[\left( y=\frac{5}{3} \right)\] is mixed with one mole of a diatomic gas \[\left( y=\frac{7}{3} \right),\] the value of y for the mixture is
A)
1.40
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B)
1.50
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C)
1.53
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D)
3.07
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question_answer 47) Oxygen boils at \[-183{}^\circ C\].This temperature is approximately in fahrenheit is
A)
\[-329{}^\circ F\]
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B)
\[-261{}^\circ F\]
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C)
\[-215{}^\circ F\]
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D)
\[-297{}^\circ F\]
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question_answer 48) 420 J of energy supplied to 10 g of water will raise its temperature by nearly
A)
\[1{}^\circ C\]
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B)
\[4.2{}^\circ C\]
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C)
\[10{}^\circ C\]
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D)
\[42{}^\circ C\]
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question_answer 49) Using which of the following instruments, the temperature of the sun can be determined ?
A)
Platinum thermometer
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B)
Gas thermometer
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C)
Pyrometer
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D)
Vapour pressure thermometer
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question_answer 50) An ideal gas undergoes an adiabatic change in volume (V) with pressure (p). Then
A)
\[{{p}^{\gamma }}V\]= constant
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B)
\[{{p}^{\gamma }}V\]= constant
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C)
\[{{(pV)}^{\gamma }}\] = constant
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D)
\[pV\]= constant
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question_answer 51) The most electronegative element in periodic table is
A)
cesium
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B)
chlorine
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C)
fluorine
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D)
barium
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question_answer 52) A neutral atom can accept electron to form an anion. The process involves
A)
loss of energy
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B)
gain of energy
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C)
no change in energy
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D)
None of the above
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question_answer 53) The outermost electronic configuration of the most electronegative element is
A)
\[n{{s}^{2}}n{{p}^{3}}\]
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B)
\[n{{s}^{2}}n{{p}^{4}}\]
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C)
\[n{{s}^{2}}n{{p}^{5}}\]
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D)
\[n{{s}^{2}}n{{p}^{6}}\]
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question_answer 54) The total number of electrons that take part in forming bond in \[{{O}_{2}}\] is
A)
\[2\]
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B)
\[4\]
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C)
\[6\]
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D)
\[8\]
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question_answer 55) Methanol is soluble in water due to
A)
covalent bond nature
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B)
hydrogen bonding
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C)
ionic bond nature
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D)
its poisonous nature
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question_answer 56) The number of bonding and anti-bonding respectively in \[CO\] molecule are
A)
\[8,2\]
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B)
\[2,8\]
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C)
\[4,2\]
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D)
\[2,4\]
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question_answer 57) The bond order in \[He_{2}^{+}\] ion is
A)
\[0.5\]
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B)
\[1.0\]
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C)
\[1.5\]
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D)
\[2.0\]
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question_answer 58) Food irradiation is used to
A)
precook food
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B)
kill micro-organism
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C)
kill insects
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D)
increase nutrient value
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question_answer 59) The name catalyst was given by
A)
J.J. Thomson
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B)
J.J Thomson
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C)
Berzelius
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D)
Rutherford
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question_answer 60) Vinegar is
A)
\[HCHO\]
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B)
\[H\,COOH\]
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C)
\[C{{H}_{3}}CHO\]
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D)
\[C{{H}_{3}}COOH\]
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question_answer 61) In which solvent are alkenes most soluble?
A)
water
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B)
ethyl alcohol
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C)
carbon tetrachloride
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D)
ammonia
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question_answer 62) Which of the following compounds will show geometrical isomerism?
A)
Propene
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B)
2-butene
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C)
Propyne
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D)
2-butyne
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question_answer 63) How many \[\sigma \](sigma) bonds are there in \[C{{H}_{2}}=CH-CH=C{{H}_{2}}\]?
A)
\[3\]
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B)
\[6\]
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C)
\[9\]
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D)
\[12\]
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question_answer 64) When acetylene is passed through hot iron tube at \[{{400}^{o}}C,\]it gives
A)
benzene
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B)
toluene
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C)
o-xylene
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D)
methylene
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question_answer 65) Which of the following hydrocarbons has acidic hydrogen?s?
A)
1-butane
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B)
1-butyne
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C)
2-butene
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D)
2-butyne
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question_answer 66) Which of the following has the highest boiling point?
A)
Diethyl ether
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B)
n-butyraldehyde
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C)
n-butyl alcohol
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D)
n-propyl chloride
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question_answer 67) Rectified spirit is
A)
100% ethanol
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B)
90% ethanol
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C)
100% methanol
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D)
95% ethanol
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question_answer 68) Which one of the following reagents will react readily with both aldehydes and ketones?
A)
Grignard reagent
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B)
Fehling?s reagent
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C)
Tollen?s reagent
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D)
Schiff?s reagent
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question_answer 69) Which of the following compounds will give an iodoform test?
A)
Benzoic acid
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B)
Ethanol
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C)
Benzyl chloride
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D)
M' ethanol
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question_answer 70) Acetone undergoes reduction with hydrazine in the presence of \[NaOH\]to form propane. This reaction is known as
A)
Clemmensen reduction
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B)
Wolff-Kishner reduction
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C)
Rosenmund reduction
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D)
Reformat sky reaction
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question_answer 71) Which of the following will give acetic acid on acid hydrolysis?
A)
Ethyl acetate
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B)
Acetone
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C)
Methyl propionate
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D)
Lactic acid
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question_answer 72) Methylamine reacts with nitrous acid to form
A)
\[C{{H}_{3}}C{{H}_{3}}\]
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B)
\[C{{H}_{3}}N{{O}_{2}}\]
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C)
\[C{{H}_{3}}OH\]
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clear
D)
\[C{{H}_{3}}C{{H}_{2}}OH\]
done
clear
View Answer play_arrow
question_answer 73) Which of the following compounds does not react with acetyl chloride?
A)
Methylamine
done
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B)
Dimethylamine
done
clear
C)
Aniline
done
clear
D)
Trimethylamine
done
clear
View Answer play_arrow
question_answer 74) Which of the following compounds undergoes nitration most readily?
A)
Benzene
done
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B)
Toluene
done
clear
C)
Benzoic acid
done
clear
D)
Nitrobenzene
done
clear
View Answer play_arrow
question_answer 75) Which element is used to vulcanise rubber?
A)
\[P\]
done
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B)
\[Br\]
done
clear
C)
\[N\]
done
clear
D)
\[S\]
done
clear
View Answer play_arrow
question_answer 76) Epsom salt is
A)
\[MgS{{O}_{4}}.7{{H}_{2}}O\]
done
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B)
\[CaS{{O}_{4}}.{{H}_{2}}O\]
done
clear
C)
\[MgS{{O}_{4}}.2{{H}_{2}}O\]
done
clear
D)
\[BaS{{O}_{4}}.2{{H}_{2}}O\]
done
clear
View Answer play_arrow
question_answer 77) Oxygen exhibits positive oxidation state in
A)
\[CO\]
done
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B)
\[{{F}_{2}}O\]
done
clear
C)
\[NO\]
done
clear
D)
\[{{N}_{2}}O\]
done
clear
View Answer play_arrow
question_answer 78) The poison for platinum catalyst is
A)
sulphur
done
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B)
arsenic
done
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C)
selenium
done
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D)
vanadium
done
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View Answer play_arrow
question_answer 79) Chlorine gas is dried over
A)
quicklime
done
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B)
caustic soda
done
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C)
caustic potash stick
done
clear
D)
cone. sulphuric acid
done
clear
View Answer play_arrow
question_answer 80) The noble gas which is radioactive is
A)
argon
done
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B)
helium
done
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C)
radon
done
clear
D)
xenon
done
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View Answer play_arrow
question_answer 81) The total number of Bravais lattices in crystal is
A)
\[7\]
done
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B)
\[32\]
done
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C)
\[230\]
done
clear
D)
\[14\]
done
clear
View Answer play_arrow
question_answer 82) If the de-Broglie wavelength of the fourth Bohr's orbit of hydrogen atom is \[4\overset{\text{o}}{\mathop{\text{A}}}\,\] the circumference of the orbit is
A)
\[4\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
clear
B)
\[4nm\]
done
clear
C)
\[16\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
clear
D)
\[16\text{ }nm\]
done
clear
View Answer play_arrow
question_answer 83) The s and p characters in bond formed by central atom are equal in
A)
\[C{{H}_{4}}\]
done
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B)
\[CH\equiv CH\]
done
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C)
\[CH_{3}^{+}\]
done
clear
D)
\[CH_{3}^{-}\]
done
clear
View Answer play_arrow
question_answer 84) The maximum bond strength is in
A)
\[{{O}_{2}}\]
done
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B)
\[O_{2}^{+}\]
done
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C)
\[O_{2}^{-}\]
done
clear
D)
\[O_{2}^{2-}\]
done
clear
View Answer play_arrow
question_answer 85) The ratio of the radii of the nucleic He and } H is
A)
\[4\]
done
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B)
\[2\]
done
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C)
\[3\]
done
clear
D)
\[1.6\]
done
clear
View Answer play_arrow
question_answer 86) Radiocarbon dating was developed by
A)
M. Curie
done
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B)
M. Calvin
done
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C)
W. F. Libby
done
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D)
H. Becquerel
done
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View Answer play_arrow
question_answer 87) The pH of \[0.1\text{ }M\]aqueous solution of \[N{{H}_{4}}OH\]is \[({{K}_{b}}=1.0\times {{10}^{-5}})\]
A)
\[3\]
done
clear
B)
\[10.5\]
done
clear
C)
\[11\]
done
clear
D)
\[7.5\]
done
clear
View Answer play_arrow
question_answer 88) The work differential, dW, is
A)
a state function
done
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B)
an inexact differential
done
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C)
exact differential
done
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D)
None of the above
done
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View Answer play_arrow
question_answer 89) For a real gas\[\left( \frac{\partial U}{\partial V} \right)\]is
A)
zero
done
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B)
positive
done
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C)
negative
done
clear
D)
infinity
done
clear
View Answer play_arrow
question_answer 90) \[10\text{ }moles\]of an ideal gas expands into a vacuum. The work done is
A)
infinity
done
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B)
\[10\text{ }J\]
done
clear
C)
zero
done
clear
D)
\[5\text{ }J\]
done
clear
View Answer play_arrow
question_answer 91) In Arrhenius equation for activation energy, \[k=A{{e}^{-{{E}_{a}}/Rt}},\] A represents the following [a] Pre exponential factor [b] Frequency factor [c] Arrhenius factor [d] Collision factor and frequency The correct answer is
A)
\[1\]and \[3\]
done
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B)
\[1\] and \[2\]
done
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C)
\[3\] and \[4\]
done
clear
D)
\[-2\] and \[3\]
done
clear
View Answer play_arrow
question_answer 92) Which is correct for an endothermic reaction?
A)
\[\Delta E\] is negative
done
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B)
\[\Delta H\] is negative
done
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C)
\[\Delta H\] is positive
done
clear
D)
\[\Delta H\] is equal to zero
done
clear
View Answer play_arrow
question_answer 93) In the lead-acid battery during charging, the cathode reaction is
A)
reduction of \[P{{b}^{2+}}\] to \[Pb\]
done
clear
B)
formation of \[PbS{{O}_{4}}\]
done
clear
C)
deposition of \[Pb\] at the anode
done
clear
D)
formation of \[Pb{{O}_{2}}\]
done
clear
View Answer play_arrow
question_answer 94) For an adiabaric process
A)
T = constant
done
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B)
Q = 0
done
clear
C)
Q = constant
done
clear
D)
W = 0
done
clear
View Answer play_arrow
question_answer 95) A real solution is that which
A)
obeys Raoult's law
done
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B)
obeys Henry's law
done
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C)
does not obey Raoult's law
done
clear
D)
obeys Ohm's law
done
clear
View Answer play_arrow
question_answer 96) The continuous rapid zig-zag movement executed by a colloidal particle in the dispersion medium is called
A)
Tyndall effect
done
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B)
Brownian movement
done
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C)
electrophoresis
done
clear
D)
peptization
done
clear
View Answer play_arrow
question_answer 97) The enthalpy change in the reaction \[2CO+{{O}_{2}}\xrightarrow{{}}2C{{O}_{2}}\]is termed as
A)
enthalpy of reaction
done
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B)
enthalpy of fusion
done
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C)
enthalpy of combustion
done
clear
D)
enthalpy of formation
done
clear
View Answer play_arrow
question_answer 98) Which of the following can change the value of equilibrium constant for a reaction
A)
changing the concentration of the reactant
done
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B)
removing the products as they are formed
done
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C)
changing the solvent
done
clear
D)
adding a catalyst
done
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View Answer play_arrow
question_answer 99) The vapour pressure of a dilute aqueous solution of glucose is \[740\text{ }mm\]of mercury at\[373\text{ }K\]. The mole fraction of the solute is
A)
\[\frac{1}{20}\]
done
clear
B)
\[\frac{1}{38}\]
done
clear
C)
\[\frac{1}{76}\]
done
clear
D)
\[\frac{1}{740}\]
done
clear
View Answer play_arrow
question_answer 100) How many grams of nickel can be electroplated from a solution of nickel chloride by 4F of electricity?
A)
\[29.3\]
done
clear
B)
\[58.7\]
done
clear
C)
\[117.4\]
done
clear
D)
\[176.1\]
done
clear
View Answer play_arrow
question_answer 101) Which is the unit of DNA?
A)
Chromatin
done
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B)
Euchromatm
done
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C)
Chromosomes
done
clear
D)
Chromatids
done
clear
View Answer play_arrow
question_answer 102) Which is the property of bile juice?
A)
Not have any enzymes
done
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B)
It has crypsin
done
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C)
It has enterogastrone
done
clear
D)
It has trypofnomide
done
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View Answer play_arrow
question_answer 103) In humans, which side of cerebral hemisphere recognises the faces of friends and family members?
A)
Left cerebral hemisphere
done
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B)
Right cerebral hemisphere
done
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C)
Both [a] and [b]
done
clear
D)
None of the above
done
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View Answer play_arrow
question_answer 104) The extra embryonic membranes of mammalian embryo are derived from
A)
inner cell mass
done
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B)
trophoblast
done
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C)
formative cells
done
clear
D)
follicle cells
done
clear
View Answer play_arrow
question_answer 105) Red tide is caused by
A)
Protozoans
done
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B)
corals
done
clear
C)
dinoflagellates
done
clear
D)
All of these
done
clear
View Answer play_arrow
question_answer 106) Find the out odd one
A)
Guinea worm
done
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B)
Hookworm
done
clear
C)
Ringworm
done
clear
D)
Tapeworm
done
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View Answer play_arrow
question_answer 107) The major constituent of vertebrate bone is
A)
calcium phosphate
done
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B)
calcium carbonate
done
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C)
sodium chloride
done
clear
D)
potassium hydroxide
done
clear
View Answer play_arrow
question_answer 108) Which of the following animal belongs to phylum-Mollusca ?
A)
Globe fish
done
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B)
Star fish
done
clear
C)
Silver fish
done
clear
D)
Cattle fish
done
clear
View Answer play_arrow
question_answer 109) Honey that has a high concentration of sugar, does not decay because
A)
it contains natural antioxidant that prevent bacterial attack
done
clear
B)
bacteria cannot survive in an active state in a solution of high osmotic strength, as water is drawn out from honey
done
clear
C)
in honey bacteria are totally deprived of oxygen
done
clear
D)
None of the above
done
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View Answer play_arrow
question_answer 110) Which of the following is iron storing protein?
A)
Alpha globulin
done
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B)
Gamma globulin
done
clear
C)
Ferritin
done
clear
D)
Albumins
done
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View Answer play_arrow
question_answer 111) Corpus striatum is found in
A)
paracoel
done
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B)
diocoel
done
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C)
metacoel
done
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D)
cerebral hemisphere
done
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View Answer play_arrow
question_answer 112) A rabbit runs very fast but after some time feel tired, because
A)
formation of lactic acid in muscles
done
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B)
formation of succinic acid in muscles
done
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C)
loss of energy
done
clear
D)
None of the above
done
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View Answer play_arrow
question_answer 113) Body cells infected with virus produce a protein Called
A)
interferon
done
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B)
properdin
done
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C)
Gamma globulin
done
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D)
hybridoma
done
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View Answer play_arrow
question_answer 114) The cytoplasmic segement of striated muscle fibre is termed
A)
metamere
done
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B)
neuromere
done
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C)
sarcoplasm
done
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D)
sarcomere
done
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View Answer play_arrow
question_answer 115) Capacitation of sperm in mammals involves
A)
sperm size change
done
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B)
acrosome reaction
done
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C)
nuclear chromatin change
done
clear
D)
mitochondrial alignment
done
clear
View Answer play_arrow
question_answer 116) Which one of the following is a pandemic disease ?
A)
Amoebic dysentery
done
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B)
Hepatitis
done
clear
C)
Filariasis
done
clear
D)
Influenza
done
clear
View Answer play_arrow
question_answer 117) Products of adenine and guanine metabolism are excreted by humans as
A)
ammonia
done
clear
B)
urea
done
clear
C)
uric acid
done
clear
D)
allantoin
done
clear
View Answer play_arrow
question_answer 118) Peripatus is a connecting link of
A)
Reptiles and Mammals
done
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B)
Flat worms and Annelida
done
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C)
Mollusca and Arthropoda
done
clear
D)
Annelida and Arthropoda
done
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View Answer play_arrow
question_answer 119) Which of the following is a hormonal disease ?
A)
Cold
done
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B)
Goitre
done
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C)
Tuberculosis
done
clear
D)
Leprosy
done
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View Answer play_arrow
question_answer 120) One gene-one enzyme hypothesis is proposed by
A)
Watson and Crick
done
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B)
Beadle and Tatum
done
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C)
Singer and Nicolson
done
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D)
Schleiden and Schwan
done
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question_answer 121) The skin colour of the humans are regulated by
A)
multiple alleles
done
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B)
lethal genes
done
clear
C)
polygenes
done
clear
D)
None of these
done
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View Answer play_arrow
question_answer 122) The thickening of wall of artery is called
A)
aneurysm
done
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B)
arteriosclerosis
done
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C)
arthritis
done
clear
D)
Both [a] and [b]
done
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View Answer play_arrow
question_answer 123) Which blood group has both 'a' and V antibodies ?
A)
0
done
clear
B)
AB
done
clear
C)
A
done
clear
D)
B
done
clear
View Answer play_arrow
question_answer 124) Passive food ingestion in Amoeba is known as
A)
invagination
done
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B)
import
done
clear
C)
drcumfluence
done
clear
D)
circumvallation
done
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View Answer play_arrow
question_answer 125) Palaeontology is the study of
A)
birds
done
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B)
bones
done
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C)
primates
done
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D)
fossils
done
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question_answer 126) The thread-like structures that begin to radiate from each centromere by the end of prophase are
A)
kinetochore microtubules
done
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B)
polar microtubules
done
clear
C)
aster microtubule
done
clear
D)
spindle microtubules
done
clear
View Answer play_arrow
question_answer 127) In which vitamin the cobalt metal is present ?
A)
\[{{B}_{1}}\]
done
clear
B)
\[{{B}_{2}}\]
done
clear
C)
\[{{B}_{6}}\]
done
clear
D)
\[{{B}_{12}}\]
done
clear
View Answer play_arrow
question_answer 128) Which of the following is the least poisonous nitrogenous waste ?
A)
Ammonia
done
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B)
Urea
done
clear
C)
Uric acid
done
clear
D)
D-Ammonia and urea
done
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View Answer play_arrow
question_answer 129) Chloride shift is essential for the transportation of
A)
\[C{{O}_{2}}\]
done
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B)
\[{{O}_{2}}\]
done
clear
C)
\[C{{O}_{2}}\] and \[{{O}_{2}}\]
done
clear
D)
\[{{N}_{2}}\]
done
clear
View Answer play_arrow
question_answer 130) The sensory neurons of a vertebrate retina are
A)
rods and cones
done
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B)
ganglion cells
done
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C)
amacrine cells
done
clear
D)
bipolar cells
done
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View Answer play_arrow
question_answer 131) At which stage does cytokinesis begin ?
A)
Anaphase
done
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B)
Prophase
done
clear
C)
Metaphase
done
clear
D)
Interphase
done
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View Answer play_arrow
question_answer 132) Each restriction enzymes cleaves a molecule only at
A)
methyl groups
done
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B)
the ends of genes
done
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C)
particular nucleotide sequence
done
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D)
the time of DNA replication
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View Answer play_arrow
question_answer 133) The bio concentration of DDT in the body fat of Indian people is
A)
13-31 ppm
done
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B)
18-36 ppm
done
clear
C)
5-10 ppm
done
clear
D)
2-5 ppm
done
clear
View Answer play_arrow
question_answer 134) In oogenesis, when a diploid cell in the ovary undergoes meiosis, how many ova results ?
A)
1
done
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B)
2
done
clear
C)
3
done
clear
D)
4
done
clear
View Answer play_arrow
question_answer 135) Natural selection acts on an organism's
A)
dominant alleles
done
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B)
recessive alleles
done
clear
C)
phenorype
done
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D)
genotype
done
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View Answer play_arrow
question_answer 136) An allergic reaction is initiated by antibodies of the
A)
\[\text{IgG}\]group
done
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B)
\[\text{Ig}\,\text{M}\]
done
clear
C)
\[\text{Ig}\,\text{A}\]
done
clear
D)
\[\text{Ig}\,\text{E}\]
done
clear
View Answer play_arrow
question_answer 137) The virus that causes Acquired Immune Deficiency Syndrome (AIDS) parasitizes
A)
B-cells
done
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B)
cytotoxic T-cells
done
clear
C)
helper T-cells
done
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D)
the membrane of lymph nodes
done
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View Answer play_arrow
question_answer 138) The geographic limits within which a population exists is its
A)
niche
done
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B)
habitat
done
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C)
range
done
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D)
territory
done
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question_answer 139) Which of the following taxonomic categories contains organisms least similar to one another?
A)
Class
done
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B)
Genus
done
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C)
Family
done
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D)
Species
done
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question_answer 140) Which of the following is a type of intercellular Junction between animals cells ?
A)
Middle lamella
done
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B)
Plasmodesma
done
clear
C)
Desmosome
done
clear
D)
Glycocalyx
done
clear
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question_answer 141) Human sperm cells move by means of a
A)
dlium
done
clear
B)
flagellum
done
clear
C)
basal body
done
clear
D)
hair
done
clear
View Answer play_arrow
question_answer 142) Which of the following processes makes direct use of oxygen ?
A)
Glycolysis
done
clear
B)
Fermentation
done
clear
C)
Krebs' cycle
done
clear
D)
Electron transport
done
clear
View Answer play_arrow
question_answer 143) Genes that are inactive for long periods of time tend to be bonded to
A)
each other
done
clear
B)
methyl groups
done
clear
C)
actin and myosin
done
clear
D)
the nucleolus
done
clear
View Answer play_arrow
question_answer 144) M. A virus that can reproduce without killing its host is called a
A)
lyric virus
done
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B)
retroactive virus
done
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C)
temperate virus
done
clear
D)
virion
done
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question_answer 145) An organism with two different alleles is
A)
homozygous for that trait
done
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B)
homologous for the allele
done
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C)
heterozygous for that trait
done
clear
D)
heterologous for the alleles
done
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View Answer play_arrow
question_answer 146) The gerotypic expression seen in a person of blood group AB is called
A)
dominant-recessive
done
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B)
codominance
done
clear
C)
incomplete dominance
done
clear
D)
corecession
done
clear
View Answer play_arrow
question_answer 147) The genetic basis of haemophilia was revealed by studies of
A)
DNA sequences
done
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B)
chromosome in gametes
done
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C)
family pedigree
done
clear
D)
prenatal gene products
done
clear
View Answer play_arrow
question_answer 148) Diseases caused by pleiotropic genes are
A)
syndromes
done
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B)
reversible by diet therapy
done
clear
C)
reversible by gene therapy
done
clear
D)
extremely rare
done
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View Answer play_arrow
question_answer 149) Tobacoo smoke contains
A)
\[C{{O}_{2}}\] hydrocarbons and tar
done
clear
B)
\[C{{O}_{2}}\]and tar
done
clear
C)
\[C{{O}_{2}}\], polycyclic aromatic hydrocarbons and tar
done
clear
D)
\[C{{O}_{2}},CO\] and tar
done
clear
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question_answer 150) Alcohol depresses nervous system and acts as
A)
sedative agents
done
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B)
analgesic agent
done
clear
C)
anesthetic agents
done
clear
D)
All of these
done
clear
View Answer play_arrow
question_answer 151) Merozygore is formed in
A)
Yeast
done
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B)
Spirogyra
done
clear
C)
Escherichia coli
done
clear
D)
Neurospora
done
clear
View Answer play_arrow
question_answer 152) The fermented food of Mucor is
A)
tempe kedel
done
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B)
tofu
done
clear
C)
tempe kedel
done
clear
D)
sufu
done
clear
View Answer play_arrow
question_answer 153) The theory that all the cells arise from pre-existing cells (Omnis cellula e cellula) was proposed by
A)
Schwann (1839)
done
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B)
Brown (1831)
done
clear
C)
Virchow (1855)
done
clear
D)
Schleiden (1938)
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question_answer 154) C He most studied prokaryote is
A)
Klebsiella pneumonia
done
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B)
Pseudomonas sp
done
clear
C)
Escherichia coli
done
clear
D)
Badus thuringiensis
done
clear
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question_answer 155) Which bacterium has two chromosomes in nucleoid?
A)
Artho bacterium sp
done
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B)
Vibrio cholera
done
clear
C)
Xanthomonas citri
done
clear
D)
Closmdium
done
clear
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question_answer 156) Which of the following ribosomal RNA is most extensively used to establish phylogenetic relationship among eukaryotes?
A)
16S
done
clear
B)
18S
done
clear
C)
5S
done
clear
D)
34S
done
clear
View Answer play_arrow
question_answer 157) Annealing' is a phenomenon related to
A)
denaturation of DNA
done
clear
B)
renamration of DNA
done
clear
C)
melting point of DNA (Tm)
done
clear
D)
separation of G from C
done
clear
View Answer play_arrow
question_answer 158) One of the following plasmid produces lacteriocin' which is lethal to other strains of same genus
A)
\[Ti\]
done
clear
B)
\[Cpl\text{ }E\]
done
clear
C)
\[{{\text{R}}_{\text{100}}}\]
done
clear
D)
\[pB{{r}^{322}}\]
done
clear
View Answer play_arrow
question_answer 159) Lysosomes are not found in
A)
Leucocytes
done
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B)
Amoeba
done
clear
C)
Hela cells
done
clear
D)
Mammalian erythrocytes
done
clear
View Answer play_arrow
question_answer 160) Chromoplast contains pigment other than.
A)
chlorophyll
done
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B)
anthocyanin
done
clear
C)
\[\text{ }\!\!\beta\!\!\text{ -}\]carotene
done
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D)
xanthophylls
done
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question_answer 161) A dihybrid cross between pea plants with "yellow round' and 'green wrinkled', seed in \[{{F}_{2}}\] generation genotype yy Rr yy rR means
A)
heterozygous yellow wrinkled
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B)
heterozygous yellow round
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C)
heterozygous green round
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D)
heterozygous green wrinkled
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question_answer 162) In male human, how many linkage groups occur in their chromosome ?
A)
22
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B)
24
done
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C)
23
done
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D)
46
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question_answer 163) During crossing over, synaptonemal complex in between two paired chromosome is formed in which stage of meiosis?
A)
Diplotene
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B)
Diakinesis
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C)
Pachytene
done
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D)
Leptotene
done
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question_answer 164) The enzyme which act to hydrolyse or breakdown a polynucleotide chain into its component nucleotide is
A)
gyrases
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B)
polymerases
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C)
nucleases
done
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D)
primases
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question_answer 165) In most organisms the 'initiation codon' is
A)
UAG
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B)
AUG
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C)
GUA
done
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D)
GAU
done
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question_answer 166) In E. coli, the average life of mRNA is about
A)
2h
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B)
2 min
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C)
2 s
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D)
indefinite period
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question_answer 167) Antibiotic which inhibits cell wall synthesis in bacteria
A)
chloramphenicol
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B)
erythromycin
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C)
penicillin
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D)
tetracycline
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question_answer 168) Cell wall of xylem is rich in
A)
starch
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B)
lignin
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C)
lipid
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D)
protein
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question_answer 169) Anatomically jute fibres are
A)
xylem fibres
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B)
phloem fibres
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C)
sclerenchyma fibres
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D)
cortical fibres
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question_answer 170) The first sporophyte arising from pollen grain was made by Guha and Maheshwari (1966) in
A)
Hyacinthus
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B)
Datura
done
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C)
Drosera
done
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D)
Glycine max
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question_answer 171) The haustorial behaviour where entire embryo sac grow beyond the ovular tissue occur in
A)
Santalum
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B)
Zea mays
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C)
Argemone
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D)
Datura
done
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question_answer 172) The chief source of nutrition of embryo inside the ovule is
A)
endosperm
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B)
ovular tissue
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C)
embryo sac
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D)
haustoria
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question_answer 173) Cereal proteins are deficient in one of the following amino acid
A)
methionine
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B)
threonine
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C)
lysine
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D)
glutamic acid
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question_answer 174) 'Elicitors' are molecule which stimulate production of
A)
primary metabolites
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B)
secondary metabolites
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C)
tertiary metabolites
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D)
all metabolites
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question_answer 175) Malolactic fermentation during wine production is performed by
A)
Lactobacillus
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B)
Leuconostoc
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C)
Saccharomyces
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D)
As pergillus
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question_answer 176) 'Downstream process' in fermentation technology means
A)
secretion of metabolites in stationary phase
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B)
actual recovery of useful product
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C)
removal of waste after fermentation
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D)
None of the above
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question_answer 177) Cephalosporum acremonium a fungus which produces cephalosporin is
A)
marine fungus
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B)
fresh water fungus
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C)
soil fungus
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D)
endophyte
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question_answer 178) Eukaryotes lack
A)
membrane bound nucleus
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B)
complex membranous internal organ
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C)
gas vesicle
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D)
mRNA in trons
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question_answer 179) T series bacteriophage possess complex tail structure is
A)
\[{{T}_{1}}\]
done
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B)
\[{{T}_{2}}\]
done
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C)
\[{{T}_{3}}\]
done
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D)
\[{{T}_{4}}\]
done
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question_answer 180) Mycoplasmas differs from other bacteria in their
A)
DNA
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B)
RNA
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C)
cell wall
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D)
nutrition
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question_answer 181) Cyanobacteria differs from other groups of bacteria in their
A)
DNA
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B)
cell wall
done
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C)
nutrition
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D)
reproduction
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question_answer 182) Nostoc does not form symbiotic association with
A)
Cycos
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B)
Anthoceros
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C)
Pinus
done
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D)
Gunnera
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question_answer 183) Penicillin is produced commercially from
A)
Penidllium notatum
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B)
P. chrysogenum
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C)
P. citrinum
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D)
P. rubrum
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question_answer 184) Which of the following statement is true?
A)
Pure water has minimum water potential
done
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B)
Greater the water molecule in a system lesser the kinetic energy
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C)
Water always move from lower water potential to higher one
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D)
The water potential of pure water is zero.
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question_answer 185) Alga commonly known as "water silk' or 'pond silk' is
A)
Zygnema
done
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B)
Spirogyra
done
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C)
Cladophora
done
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D)
Oedogonium
done
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question_answer 186) In Funaria stomata are found in
A)
capsule
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B)
foot
done
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C)
seta
done
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D)
thallus
done
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question_answer 187) Trabeculae in Selaginella is
A)
modified pericycle
done
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B)
elongated endodermis
done
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C)
elongated cortical cell
done
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D)
modified xylem vessel
done
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question_answer 188) Rhizobia form nodule in Glycine max (soybean) is
A)
Azorhizobium
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B)
Bradyrhizobium
done
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C)
Sinorhizobium
done
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D)
Mesorhizobium
done
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question_answer 189) The scientific name of 'Haldi' is
A)
Curcuma longa
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B)
C. aromatic
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C)
C. zedoaria
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D)
C. leucorhiza
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question_answer 190) The most primitive family of dicot is
A)
Rosaceae
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B)
Magnoliaceae
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C)
Utricaceae
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D)
Cactaceae
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question_answer 191) The present level (2009-10) of \[C{{O}_{2}}\] (ppm) in atmosphere is about
A)
346
done
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B)
385
done
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C)
365
done
clear
D)
355
done
clear
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question_answer 192) My corrhizal association of which plant enables it to utilize amino acid as N-source?
A)
Strawberry
done
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B)
Cranberry
done
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C)
Orchids
done
clear
D)
Pinus
done
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question_answer 193) Which part of the root is most active in absorption of phosphate?
A)
Root cap
done
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B)
Meristematic zone
done
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C)
Root hairs
done
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D)
Root apex
done
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question_answer 194) The main part of entry of \[C{{O}_{3}}\] into leaf is
A)
cuticle
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B)
epidermis
done
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C)
stomata
done
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D)
pore
done
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question_answer 195) Oxygen liberated during photosynthesis comes from
A)
carbon dioxide
done
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B)
water
done
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C)
chlorophyll
done
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D)
phosphoglyceric acid
done
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question_answer 196) In anaerobic respiration ATP produced (mol.) is
A)
24
done
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B)
12
done
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C)
2
done
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D)
8
done
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question_answer 197) Which is an example of 'hydrolases'?
A)
Catalase
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B)
Trypsin
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C)
Oxidases
done
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D)
Transaminases
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question_answer 198) Which one of the following is 100 times more reactive than CFC in destroying ozone ?
A)
\[\text{IFC}\]
done
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B)
\[\text{Br}\,\text{FC}\]
done
clear
C)
\[\text{UV-B}\]
done
clear
D)
\[\text{UV-C}\]
done
clear
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question_answer 199) Which of the following process helps in nutrient conservation ?
A)
Meneralization
done
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B)
Leaching
done
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C)
Immobilization
done
clear
D)
Nitrification
done
clear
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question_answer 200) Engine fitted in two wheeler perform compel combustion of fuel is
A)
two stroke
done
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B)
three stroke
done
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C)
four stroke
done
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D)
one stroke
done
clear
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What is the height to which the lift takes the passengers ?
A sudden jerk is given to the end D of the string, then
All the surfaces are frictionless. If the body starts from rest, its speed at the bottom of the track is
