question_answer 1) In Wiens formula \[{{\lambda }_{m}}\text{T}=\text{b},\] where \[{{\lambda }_{m}}=\]wavelength and T = temperature. The dimensions of Wiens constant b are
A)
\[\left[ {{\text{L}}^{\text{3}}} \right]\]
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B)
[LT]
done
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C)
\[[{{L}^{-1}}]\]
done
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D)
\[[L\theta ]\]
done
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question_answer 2) A particle executes simple harmonic motion with an amplitude a. The energy of the particle is half kinetic and half potential, when its displacement is
A)
\[\frac{a}{3}\]
done
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B)
\[\frac{a}{2}\]
done
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C)
\[\frac{a}{\sqrt{2}}\]
done
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D)
\[\frac{a}{2\sqrt{2}}\]
done
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question_answer 3) A projectile of mass m is thrown with a velocity u making an angle \[60{}^\circ \] with the horizontal, neglecting air resistance, the change in momentum of the departure from A to its arrival at B, to along the vertical directions
A)
\[2\,mu\]
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B)
\[\sqrt{3}\,mu\]
done
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C)
\[\,mu\]
done
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D)
\[\frac{\,mu}{\sqrt{3}}\]
done
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question_answer 4) A particle experience a constant acceleration for 20 s, after starting from rest, it travels a distance 5i in first 10 s and a distance \[{{s}_{2}}\] in next 10 s, then
A)
\[{{s}_{2}}=\text{ }{{s}_{1}}\]
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B)
\[{{s}_{2}}=\text{ }2{{s}_{1}}\]
done
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C)
\[{{s}_{2}}=\text{ }3{{s}_{1}}\]
done
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D)
\[{{s}_{2}}=\text{ }4{{s}_{1}}\]
done
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question_answer 5) A projectile is thrown with initial velocity \[\text{(a}\overset{\hat{\ }}{\mathop{\text{i}}}\,+\text{b}\overset{\hat{\ }}{\mathop{\text{j}}}\,\text{)m}/\text{s}.\]If range of projection is twice the maximum height reached by it, then
A)
\[b=\frac{a}{2}\]
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B)
\[b=a\]
done
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C)
\[b=2a\]
done
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D)
\[b=4a\]
done
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question_answer 6) A jet of water with area of cross-section 3 \[\text{c}{{\text{m}}^{\text{2}}}\] strikes a wall at an angle \[\theta =\text{6}0{}^\circ \] to the normal and rebounds elastically from the wall with the same speed. If the speed of water in the jet is 12 m/s, then the force acting on the wall is
A)
\[\text{4}.\text{31}\times \text{1}{{0}^{-1}}\text{ N}\]
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B)
\[\text{4}.\text{32}\times \text{1}{{0}^{-2}}\text{ N}\]
done
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C)
\[\text{4}.\text{32}\times \text{1}{{0}^{-3}}\text{ N}\]
done
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D)
43.2 N
done
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question_answer 7) The maximum velocity of a simple harmonic motion represented by \[\left( 100\,t\,+\frac{\pi }{6} \right)m\]is given by
A)
300
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B)
\[\frac{3\pi }{6}\]
done
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C)
100
done
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D)
\[\frac{\pi }{6}\]
done
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question_answer 8) A metallic wire of length L metre extends by \[l\]metre when stretched by suspending a weight of Mg to it. Then the mechanical energy stored in the wire is
A)
\[Mgl\]
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B)
\[\frac{Mgl}{2}\]
done
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C)
\[\frac{Mgl}{4}\]
done
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D)
\[2Mgl\]
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question_answer 9) A boy having a mass of 60 kg, holds in hand a school bag of weight 40 N. With what force the floor will push up on his feet ? \[\text{(g }=\text{ 1}0\text{ m}/{{\text{s}}^{\text{2}}})\]
A)
100 N
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B)
600 N
done
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C)
640 N
done
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D)
64 N
done
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question_answer 10) A sphere of mass 2 kg and radius 5 cm is rotating at the rate of 300 rev/min. Then the torque required to stop it in 2si revolutions is
A)
\[\text{1}.\text{6}\times \text{1}{{0}^{\text{5}}}\text{ N}-\text{m}\]
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B)
\[\text{1}.\text{6}\times \text{1}{{0}^{-\text{4}}}\text{ N}-\text{m}\]
done
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C)
\[2.5\times \text{1}{{0}^{-3}}\text{ N}-\text{m}\]
done
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D)
\[2.5\times \text{1}{{0}^{-2}}\text{ N}-\text{m}\]
done
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question_answer 11) The gravitational potential energy of a body at a distance r from the centre of the earth is U, then its weight at that point is
A)
\[\frac{U}{{{r}^{2}}}\]
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B)
\[\frac{U}{r}\]
done
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C)
\[Ur\]
done
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D)
\[U{{r}^{2}}\]
done
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question_answer 12) A source of sound is moving away from a stationary observer with a speed equal to the speed of sound. The apparent frequency heard by the observer will be
A)
\[{{\text{n}}^{\text{2}}}\]
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B)
\[\text{2n}\]
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C)
\[\frac{n}{2}\]
done
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D)
unchanged
done
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question_answer 13) One end of a uniform rope of length L and of weight w is attached rigidly to a point in the roof and a weight \[{{w}_{1}}\]is suspended from its lower end. Ifs is the area of cross-section of the \[\frac{3L}{4}\] wire, the stress in the wire at a height from 4 its lower end is
A)
\[\frac{{{w}_{1}}}{s}\]
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B)
\[\frac{{{w}_{1}}+\frac{w}{4}}{s}\]
done
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C)
\[\frac{{{w}_{1}}+\frac{3w}{4}}{s}\]
done
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D)
\[\frac{{{w}_{1}}+w}{s}\]
done
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question_answer 14) The excess pressure inside a soap bubble of diameter 1 mm is (surface tension\[=\text{ 6}0\times \text{1}{{0}^{-3}}\text{ N}/\text{m}\])
A)
\[\text{24}0\text{ N}/{{\text{m}}^{\text{2}}}\]
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B)
\[0.\text{48 N}/{{\text{m}}^{\text{2}}}\]
done
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C)
\[\text{48}0\text{ N}/{{\text{m}}^{\text{2}}}\]
done
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D)
\[0.\text{24 N}/{{\text{m}}^{\text{2}}}\]
done
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question_answer 15) Specific heat of a gas undergoing adiabatic change is
A)
zero
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B)
infinite
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C)
positive
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D)
negative
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question_answer 16) In a steady state the temperature of the ends A and B of a 20 cm long rod AB are \[100{}^\circ \] and \[0{}^\circ C\]. The temperature at the point C distant 9 cm from A is
A)
\[45{}^\circ C\]
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B)
\[55{}^\circ C\]
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C)
\[60{}^\circ C\]
done
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D)
\[65{}^\circ C\]
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question_answer 17) The temperature of the ideal gas is increased from \[27{}^\circ C\] to \[972{}^\circ C\]. The root mean square speed of its molecules becomes
A)
half
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B)
twice
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C)
four times
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D)
one- fourth
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question_answer 18) A quantity of air (y = 1.4) at \[27{}^\circ C\] is compressed suddenly, the temperature of the air system will
A)
fall
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B)
rise
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C)
remain unchanged
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D)
first rise and then fall
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question_answer 19) The ends of two rods of different material with their thermal conductivities, radii of cross-sections and lengths all in the ratio 1: 2 are maintained at the same temperature difference, if the rate of flow of heat in the larger rod is 4 cal/s, then rate of flow of heat in the shorter rod will be
A)
1 cal/s
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B)
2 cal/s
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C)
8 cal/s
done
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D)
16 cal/s
done
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question_answer 20)
Energy emitted by a black body and wavelength relations at temperature T^K, \[{{T}_{3}}K,\]and \[{{\text{T}}_{\text{3}}}\text{K},\]are shown by curves. The relation between the temperatures is
A)
\[{{\text{T}}_{\text{3}}}>{{T}_{2}}>{{T}_{1}}\]
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B)
\[{{\text{T}}_{1}}>{{T}_{2}}>{{T}_{3}}\]
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C)
\[{{\text{T}}_{1}}={{T}_{2}}={{T}_{3}}\]
done
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D)
\[{{\text{T}}_{1}},{{T}_{2}},{{T}_{3}}\]bear no relation
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question_answer 21) The temperature of a furnace is \[2327{}^\circ C\] and the intensity of maximum in its spectrum is nearly at \[12000\overset{\text{o}}{\mathop{\text{A}}}\,\]. If the intensity in the spectrum of a star is maximum nearly at \[4800\overset{\text{o}}{\mathop{\text{A}}}\,\], then the surface temperature of the star is
A)
\[767{}^\circ C\]
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B)
\[1040{}^\circ C\]
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C)
\[6500{}^\circ C\]
done
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D)
\[6227{}^\circ C\]
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question_answer 22) A wheel of radius 1 m rolls forward half a revolution on a horizontal ground. The magnitude of the displacement of the point of wheel initially in contact with the ground is
A)
\[2\pi m\]
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B)
\[\sqrt{2}\pi m\]
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C)
\[\sqrt{{{\pi }^{2}}+4}m\]
done
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D)
\[\pi \,m\]
done
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question_answer 23) A wave of frequency 500 Hz, travels between X and y, a distance of 600 m in 2 s. How many wavelength are there in distance XY ?
A)
1000
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B)
300
done
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C)
180
done
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D)
2000
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question_answer 24) The value of current at resonance in series LCR circuit is affected by the value of
A)
R only
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B)
C only
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C)
L only
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D)
R, C and L
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question_answer 25) In Youngs double slit experiment, the separation between the slits is made 3 fold, the fringe width becomes
A)
\[\frac{1}{3}Times\]
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B)
\[\frac{1}{9}Times\]
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C)
\[3\,Times\]
done
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D)
\[9\,Times\]
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question_answer 26) A convex lens of focal length 20 cm produces a real image twice the size of the object. Then the distance of the object from the lens is
A)
10 cm
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B)
20 cm
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C)
30 cm
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D)
60 cm
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question_answer 27) The speed of light in vacuum is \[\text{3}\times \text{l}{{0}^{\text{8}}}\text{ m}/\text{s}\]and the speed of light in a medium is \[\text{1}.\text{25}\times \text{l}{{0}^{\text{8}}}\text{ m}/\text{s}.\] Then the refractive index of medium is
A)
1.5
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B)
0.42
done
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C)
2.4
done
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D)
3.75
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question_answer 28) What is the focal length of a double convex lens for which the radius of curvature of each surface is 60 cm ? (n = 1.5)
A)
30 cm
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B)
60 cm
done
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C)
90 cm
done
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D)
30 cm
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question_answer 29) The ratio of maximum and minimum intensities in an interference pattern is 36 1. The ratio of the amplitudes of the two interfering waves will be
A)
5 : 7
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B)
7 : 4
done
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C)
4 : 7
done
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D)
7 : 5
done
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question_answer 30) A slide projector gives a magnification 10. If a slide of dimensions 3 cm x 2 cm is projected on the screen, then the area of image screen is
A)
\[\text{6}000\text{c}{{\text{m}}^{\text{2}}}\]
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B)
\[\text{6}00\text{c}{{\text{m}}^{\text{2}}}\]
done
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C)
\[\text{6}0\text{ c}{{\text{m}}^{\text{2}}}\]
done
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D)
\[\text{6 c}{{\text{m}}^{\text{2}}}\]
done
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question_answer 31) The focal length of the objective of a telescope is 60 cm. To obtain a magnification of 20 for the relaxed eye, the length of telescope should be
A)
80 cm
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B)
40 cm
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C)
63 cm
done
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D)
57 cm
done
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question_answer 32) An electron is accelerated at 10 kV to a tungsten target. The wavelength of X-ray photon produced will be
A)
\[0.62\overset{\text{o}}{\mathop{\text{A}}}\,\]
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B)
\[2.48\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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C)
\[0.124\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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D)
\[1.24\overset{\text{o}}{\mathop{\text{A}}}\,\]
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question_answer 33) Photoelectric threshold wavelength for tungsten is 2300 A. Work function for it will be
A)
5.38 eV
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B)
53.9 eV
done
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C)
\[5.39\times {{10}^{-8}}eV\]
done
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D)
None of these
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question_answer 34) One nuclear fission release 200 MeV energy. The number of fissions per second which will produce 10 MW of power by a generator of efficiency 25% will be
A)
\[\text{1}.\text{25}\times \text{l}{{0}^{\text{19}}}\]
done
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B)
\[\text{1}.\text{25}\times \text{l}{{0}^{\text{18}}}\]
done
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C)
\[\text{3}.\text{125}\times \text{1}{{0}^{11}}\]
done
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D)
\[\text{5}\times \text{l}{{0}^{\text{11}}}\]
done
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question_answer 35) The ratio of the radius of the orbit for the electron orbiting the hydrogen nucleus to that of an electron orbiting a deuterium nucleus is
A)
1 : 1
done
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B)
1 : 2
done
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C)
2 : 1
done
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D)
1 : 3
done
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question_answer 36) The relation between the half-life T and mean life t of a radioactive sample is
A)
T = 0.693 t
done
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B)
t = 0.693 T
done
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C)
t = t
done
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D)
t = 2.718 T
done
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question_answer 37) Which of the following techniques is concerned with ultrasonic waves?
A)
X-ray photography
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B)
Sonography
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C)
CATSCAN
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D)
ECG
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question_answer 38) The average energy released per fission is
A)
108 MeV
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B)
200 MeV
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C)
1000 MeV
done
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D)
more than 100 MeV
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question_answer 39) In a common base circuit, the collector current changes by 0.04 mA when the collector-base voltage is changed by 0.5 V. Output resistance (in \[k\Omega \]) is
A)
6
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B)
20
done
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C)
16
done
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D)
12.5
done
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question_answer 40) Three capacitors of capacitances 3\[\mu \]F, 9\[\mu \]F and 18\[\mu \]F are connected once in series and another time in parallel. The ratio of equivalent capacitances in the two cases will be
A)
1 : 15
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B)
15 : 1
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C)
1 : 1
done
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D)
1 : 3
done
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question_answer 41)
The equivalent capacitance between points A and B of circuit shown in the figure is 9uF luF 4.5 |af 6^F
A)
\[9\mu F\]
done
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B)
\[1\mu F\]
done
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C)
\[4.5\mu F\]
done
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D)
\[6\mu F\]
done
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question_answer 42) 1000 drops of water each of radius r and charged to a potential V coalesce together to form a big drop. The potential of big drop will be
A)
10 V
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B)
100 V
done
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C)
1000 V
done
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D)
\[\frac{V}{100}\]
done
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question_answer 43) Two cells, each of emf£ and internal resistance r are connected in parallel across a resistance R. The power delivered to R is maximum when
A)
\[r=R\]
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B)
\[R=\frac{r}{2}\]
done
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C)
\[R=2\,r\]
done
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D)
\[R=0\]
done
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question_answer 44)
Two batteries of emf 4 V and 8 V with internal resistances 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)
\[\frac{1}{3}A\,\,and\,\,3V\]
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B)
\[\frac{1}{6}A\,\,and\,\,4V\]
done
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C)
\[\frac{1}{9}A\,\,and\,\,9V\]
done
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D)
\[\frac{1}{2}A\,\,and\,\,12V\]
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question_answer 45) In a potentiometer experiment the galvanometer 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 0 the balance is obtained across 50 cm of the wire. The internal resistance of the cell is
A)
0.5\[\Omega \]
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B)
0.6\[\Omega \]
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C)
1.2\[\Omega \]
done
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D)
1.5\[\Omega \]
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question_answer 46) The minimum resistance that can be obtained by connecting 5 resistances of \[\frac{1}{4}\Omega \] each, is 4
A)
\[\frac{4}{5}\Omega \]
done
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B)
\[\frac{5}{4}\Omega \]
done
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C)
\[20\,\Omega \]
done
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D)
\[0.05\,\,\Omega \]
done
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question_answer 47) A proton, electron and an a-particle is accelerated through the same potential difference enter a region of uniform magnetic field, moving at right angles to the magnetic field B. The ratio of their kinetic energies is
A)
2 1 1
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B)
2 2 1
done
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C)
1 2 1
done
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D)
1 1 2
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question_answer 48) A current loop of area 0.01 m2 and carrying acurrent of 10 A is held perpendicular to a magnetic field of intensity 0.1 T. The torque acting on the loop (in N-m) is
A)
1.1
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B)
0.8
done
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C)
0.001
done
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D)
0.01
done
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question_answer 49) The alternating voltage and current in an electric circuit are respectively given by \[E=100\,\,\sin \,100\,\pi t\] \[\text{I }=\text{ 5 sin 100}\pi \text{t}\] The reactance of the circuit will be
A)
200
done
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B)
0.050
done
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C)
10
done
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D)
zero
done
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question_answer 50) A uniform metallic wire has a constant voltage across it. The heat produced is double, if
A)
both length and radius of the wire are halved
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B)
both length and radius of the wire are doubled
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C)
only radius is doubled
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D)
only length is doubled
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question_answer 51) The quantum number which is responsible for the size of electron cloud is
A)
spin
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B)
azimuthal
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C)
principal
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D)
magnetic
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question_answer 52) To deposit one equivalent weight of silver at cathode the charge required will be
A)
\[9.65\times {{10}^{4}}C\]
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B)
\[9.65\times {{10}^{3}}C\]
done
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C)
\[9.65\times {{10}^{5}}C\]
done
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D)
\[9.65\times {{10}^{7}}C\]
done
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question_answer 53) ?Electrons are filled in energy orbitals, in increasing order of energy.? This statement is related to
A)
Plancks rule
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B)
Hunds rule
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C)
Faults rule
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D)
Aufbau principle
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question_answer 54) Ascorbic acid is a
A)
enzyme
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B)
vitamin
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C)
protein
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D)
None of these
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question_answer 55) The outer electronic configuration of transitional elements is
A)
\[(n-1)\,{{s}^{2}}n{{d}^{1-5}}\]
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B)
\[(n+1)\,{{s}^{2}}n{{d}^{1-5}}\]
done
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C)
\[(n+1)\,{{s}^{2}}{{p}^{6}}(n-1)\,{{d}^{1-10}},n{{s}^{0-2}}\]
done
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D)
\[n{{s}^{2}}(n+1)\,{{d}^{1-10}}\]
done
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question_answer 56) Strongest base is
A)
RbOH
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B)
LiOH
done
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C)
KOH
done
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D)
NaOH
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question_answer 57) If the pH of an aqueous solution is 4.7, then its \[{{H}^{+}}\] concentration will be
A)
\[3\times {{10}^{-6}}\]
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B)
\[3\times {{10}^{-5}}\]
done
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C)
\[2\times {{10}^{-5}}\]
done
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D)
\[5\times {{10}^{-5}}\]
done
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question_answer 58) Conjugated double bond is present in
A)
butylene
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B)
butadiene
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C)
isobutylene
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D)
propylene
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question_answer 59) A radioactive element has a half-life of 10 yr. What percentage of the original amount of it would you expect to remain after 20 yr?
A)
12.5
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B)
8
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C)
0
done
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D)
25
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question_answer 60) Given, \[{{H}_{2}}O{{H}_{3}}{{O}^{+}}+{{F}^{-}}\] \[{{F}^{-}}+{{H}_{2}}OHF+O{{H}^{-}}\] Which of the following relation is correct?
A)
\[{{K}_{b}}={{K}_{w}}\]
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B)
\[{{K}_{b}}\times {{K}_{b}}={{K}_{w}}\]
done
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C)
\[\frac{{{K}_{a}}}{{{K}_{b}}}={{K}_{w}}\]
done
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D)
\[{{K}_{b}}=\frac{1}{{{K}_{w}}}\]
done
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question_answer 61) The allowed values of m for \[l=2\] is
A)
\[0,\pm 1\]
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B)
\[\pm \,\,1,\,\,\pm 2\]
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C)
\[0,\pm \,\,1,\,\,\pm 2\]
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D)
\[0,\,\,\pm 2\]
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question_answer 62) Alkaline dilute \[KMn{{O}_{4}}\] solution is called
A)
Etard reagent
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B)
Benedict reagent
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C)
Mullikans reagent
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D)
Baeyefs reagent
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question_answer 63) 2 moles of \[PC{{l}_{5}}\] is heated in one litre vessel. At equilibrium 0.4 mole \[C{{l}_{2}}\] is formed. The value of equilibrium constant will be
A)
\[1\times {{10}^{-3}}\]
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B)
\[1\times {{10}^{-2}}\]
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C)
\[2\times {{10}^{-1}}\]
done
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D)
\[1\times {{10}^{-1}}\]
done
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question_answer 64) If 19 is the atomic number of an element, then this element will be
A)
a metal with +3 oxidation state
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B)
a metal with +1 oxidation state
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C)
an inert gas
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D)
a metal with -3 oxidation state
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question_answer 65) At \[{{25}^{o}}C\] the solubility of sparingly soluble binary salt \[AgCl\] is \[1.25\times {{10}^{-5}}\]mol/L. What will be the value of \[{{K}_{sp}}\] at the same temperature?
A)
\[1.25\times {{10}^{-5}}\]
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B)
\[1.56\times {{10}^{-10}}\]
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C)
\[1.\times {{10}^{-10}}\]
done
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D)
\[1.44\times {{10}^{-10}}\]
done
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question_answer 66) Nesslefs reagent is used to detect
A)
\[P{{O}_{4}}^{3-}\]
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B)
\[MN{{O}_{4}}^{-}\]
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C)
\[N{{H}_{4}}^{+}\]
done
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D)
\[Cr{{O}_{4}}^{2-}\]
done
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question_answer 67) The correct increasing order of electron affinity is
A)
Be, B, N, C
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B)
C, N, B, Be
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C)
Be, N, B, C
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D)
Be, B, C, N
done
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question_answer 68) Nitrobenzene, on reaction with fuming nitric acid at \[{{90}^{o}}C\], the product is
A)
done
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B)
done
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C)
done
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D)
done
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question_answer 69) The oxidation number of C in \[C{{H}_{4}},C{{H}_{3}}Cl,C{{H}_{2}}C{{l}_{2}},CHC{{l}_{3}}\] and \[CC{{l}_{4}}\] is respectively
A)
-4, -2, 0, +2, +4
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B)
+2, 4, 0, -2, -4
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C)
4, 2, 0, -2, -4
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D)
0, 2, -2, 4, 4
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question_answer 70) Latent heat of vaporisation of a liquid at 500 K and 1 atm pressure is 10.0 kcal/mol. What will be the change in internal energy of 3 moles of liquid at same temperature?
A)
-13.0 kcal
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B)
-27.0 kcal
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C)
27.0 kcal
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D)
13.0 kcal
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question_answer 71) If LPG cylinder contains mixture of butane and isobutane, then the amount of oxygen that would be required for combustion of 1 kg of it will be
A)
2.7 kg
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B)
1.8 kg
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C)
3.58 kg
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D)
4.5 kg
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question_answer 72) The oxidation number of Cr in \[Cr{{O}_{2}}C{{l}_{2}}\] is
A)
+ 2
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B)
+ 3
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C)
+ 4
done
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D)
+ 6
done
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question_answer 73) lonisation energy is highest in
A)
\[[Ne]\,\,3{{s}^{1}}\]
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B)
\[[Ne]\,\,3{{s}^{2}}3{{p}^{3}}\]
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C)
\[[Ne]\,\,3{{s}^{10}},4{{s}^{2}},4{{p}^{3}}\]
done
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D)
\[[Ne]\,\,3{{s}^{2}}3{{p}^{4}}\]
done
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question_answer 74) In the following molecules, the hybrid state at 1 and 3 carbon atoms is \[\overset{1}{\mathop{C}}\,{{H}_{2}}=\overset{2}{\mathop{C}}\,=\overset{3}{\mathop{C}}\,H-\overset{4}{\mathop{C}}\,{{H}_{3}}\]
A)
\[s{{p}^{2}}\]
done
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B)
\[s{{p}^{3}}\]
done
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C)
\[s{{p}^{3}}d\]
done
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D)
sp
done
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question_answer 75) The IUPAC name of \[{{(C{{H}_{3}})}_{3}}C-CH=C{{H}_{2}}\] is
A)
vinyl trimethyl methane
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B)
2, 2-dimethyl-3-butene
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C)
tertiary butyl ethane
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D)
3, 3-dimethyl-l-butene
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question_answer 76) The number of \[\sigma \] and n bonds in\[C{{H}_{2}}=CH-CH=C{{H}_{2}}\]
A)
\[8\sigma \] and \[2\pi \] bonds
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B)
\[9\sigma \] and \[1\pi \] bond
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C)
\[9\sigma \]and \[3\pi \] bonds
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D)
\[9\sigma \] and \[2\pi \] bonds
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question_answer 77) \[CuS{{O}_{4}}\] dissolves in \[N{{H}_{3}}\]due to formation of
A)
\[Cu{{(OH)}_{2}}\]
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B)
\[[Cu{{(N{{H}_{3}})}_{4}}{{(OH)}_{2}}]\]
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C)
\[[Cu{{(N{{H}_{3}})}_{4}}]S{{O}_{4}}\]
done
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D)
\[CuO\]
done
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question_answer 78) Phenacetin is used as
A)
antiseptic
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B)
analgesic
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C)
antipyretic
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D)
antimalarial
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question_answer 79) The highest magnetic moment will be shown by
A)
Ni
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B)
Co
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C)
Fe
done
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D)
Zn
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question_answer 80) Gypsum is
A)
\[CaS{{O}_{4}}.\,2{{H}_{2}}O\]
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B)
\[CaC{{O}_{3}}.\,2{{H}_{2}}O\]
done
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C)
\[CaS{{O}_{4}}.\,1/2{{H}_{2}}O\]
done
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D)
\[Si{{O}_{2}}\]
done
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question_answer 81) Propene \[\xrightarrow{HBr}\,\,A\xrightarrow[\left( ii \right)\text{ }{{H}_{2}}O/boil]{\left( i \right)Mg/ether}B\]In the above sequence of reactions B is
A)
propane
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B)
butane
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C)
propene
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D)
ethane
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question_answer 82) Which is a characteristic of a catalyst?
A)
It changes the equilibrium point
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B)
It initiates the reaction
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C)
It alters the rate of a reaction
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D)
It increases the average kinetic energy of the molecules
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question_answer 83) 83. The product \[C{{H}_{3}}-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,-CHC{{l}_{2}}\] is formed when \[HOCl\] reacts with
A)
\[C{{H}_{3}}-C{{H}_{2}}-C\equiv CH\]
done
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B)
\[C{{H}_{3}}-C\equiv CH\]
done
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C)
\[C{{H}_{3}}-C\equiv C-C{{H}_{3}}\]
done
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D)
\[CH\equiv CH\]
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View Answer play_arrow
question_answer 84) Which of the following is an electrophile?
A)
\[{{H}_{2}}O\]
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B)
\[N{{H}_{3}}\]
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C)
\[AlC{{l}_{3}}\]
done
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D)
\[{{C}_{2}}{{H}_{5}}N{{H}_{2}}\]
done
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question_answer 85) A sample of radioactive substance with a \[{{t}_{1/2}}=3\] days was found to contain 3g of it, when received exactly after 12 days. The amount of radioactive substance when it was sealed
A)
48 g
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B)
12 g
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C)
24 g
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D)
6g
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question_answer 86) The correct electronic configuration of Cu (29)
A)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{1}}\]
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B)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{5}}3{{d}^{11}},4{{s}^{1}}\]
done
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C)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{9}},4{{s}^{1}}\]
done
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D)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{5}}3{{d}^{10}},4{{s}^{2}}\]
done
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View Answer play_arrow
question_answer 87) Which enzyme is effective in the following reaction? \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\xrightarrow{{}}2{{C}_{2}}{{H}_{5}}OH+2C{{O}_{2}}\]
A)
Invertase
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B)
Zymase
done
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C)
Maltase
done
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D)
a-amylase
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question_answer 88) Which of the following is a buffer?
A)
\[N{{H}_{4}}OH+N{{H}_{4}}Cl\]
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B)
\[NaOH+N{{a}_{2}}S{{O}_{4}}\]
done
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C)
\[NaOH+C{{H}_{3}}COONa\]
done
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D)
\[{{K}_{2}}S{{O}_{4}}+{{H}_{2}}S{{O}_{4}}\]
done
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question_answer 89) The most electronegative element in periodic table is
A)
Fr
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B)
F
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C)
He
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D)
N
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question_answer 90) Cryolite is the ore of
A)
Fe
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B)
Cu
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C)
Ag
done
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D)
Al
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question_answer 91) Which of the following is not a member of 3d-transition series?
A)
Fe
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B)
Co
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C)
Au
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D)
Cu
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question_answer 92) The solubility of \[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}\] is s mol/L. Its solubility product is
A)
\[72\,{{s}^{5}}\]
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B)
\[108\,{{s}^{5}}\]
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C)
\[9\,{{s}^{2}}\]
done
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D)
\[8\,{{s}^{3}}\]
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question_answer 93) A group 16 element exists in the monoatomic state in the metallic lattice. It also exists in two crystalline forms. The metal is
A)
S
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B)
Po
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C)
Se
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D)
Te
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question_answer 94) The bond energies of \[{{F}_{2}},C{{l}_{2}},B{{r}_{2}}\] and \[{{I}_{2}}\] are 155, 244, 193 and 151 kJ/mol. The weakest bond will be
A)
\[C{{l}_{2}}\]
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B)
\[B{{r}_{2}}\]
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C)
\[{{I}_{2}}\]
done
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D)
\[{{F}_{2}}\]
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question_answer 95) The process of converting hydrated alumina into anhydrous alumina is called
A)
smelting
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B)
roasting
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C)
calcination
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D)
dressing
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question_answer 96) If the hydrogen ion concentration in an acid is \[{{10}^{-8}}\] mol/L then the pH
A)
9
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B)
7
done
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C)
< 7
done
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D)
> 8
done
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question_answer 97) Tischenko reaction proceeds in the presence of
A)
Zn and \[ZnC{{l}_{2}}\]
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B)
Al powder
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C)
\[Al{{(O{{C}_{2}}{{H}_{5}})}_{3}}\] and anhydrous \[AlC{{l}_{3}}\]
done
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D)
\[FeC{{l}_{3}}\]
done
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View Answer play_arrow
question_answer 98) Which is most soluble in water?
A)
\[AgBr\]
done
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B)
\[AgCl\]
done
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C)
\[AgF\]
done
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D)
\[AgI\]
done
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View Answer play_arrow
question_answer 99) Blue vitriol is
A)
\[MgS{{O}_{4}}.\,7{{H}_{2}}O\]
done
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B)
\[CuS{{O}_{4}}.5{{H}_{2}}O\]
done
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C)
\[FeS{{O}_{4}}.7{{H}_{2}}O\]
done
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D)
\[CaS{{O}_{4}}.\,2{{H}_{2}}O\]
done
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question_answer 100) The silver is extracted by Parkes process. The basis of this method is
A)
silver is immiscible in molten Zn
done
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B)
Ag is miscible in NaCN
done
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C)
Ag is more miscible in molten Zn than in molten Pb
done
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D)
Ag is more miscible in molten Pb in comparison to molten Zn
done
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question_answer 101) Fright and flight hormone is secreted by
A)
pituitary gland
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B)
pineal gland
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C)
adrenal gland
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D)
thyroid gland
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question_answer 102) Glissons capsules are found in
A)
liver
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B)
kidney
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C)
pancreas
done
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D)
intestinal wall
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question_answer 103) Certain RNA viruses carry a gene for an enzyme that uses viral RNA as a template in the synthesis of DNA. This enzyme is
A)
viral nuclease
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B)
RNA replicase
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C)
RNA polymerase
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D)
reverse transcriptase
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question_answer 104) Which of the following disorder is associate with chronic alcoholism and malnutrition?
A)
Hobnail liver
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B)
Amyloid liver
done
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C)
Laennecs cirrhosis
done
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D)
All of the above
done
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question_answer 105) \[S{{O}_{2}}\]pollution is indicated by
A)
grasses
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B)
mosses
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C)
lichens
done
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D)
fossils
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question_answer 106) Hygroscopic roots are found in
A)
Bryophyllum
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B)
Vanda
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C)
Khizophora
done
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D)
All of these
done
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question_answer 107) Which of the following blood groups is universal donor?
A)
A
done
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B)
B
done
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C)
AB
done
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D)
O
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question_answer 108) Polytene chromosomes are found in
A)
muscles
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B)
salivary glands
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C)
connective tissue
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D)
endocrine glands
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question_answer 109) Biometric genetics deals with
A)
die biochemical explanations of various genetical phenomena
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B)
the effect of environment on genetic makeup of organisms
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C)
the genetical radiations on the living organisms
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D)
the inheritance of quantitative traits
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question_answer 110) The spread of AIDS is promoted by
A)
homosexuality
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B)
immoral way of life
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C)
use of infected needles in blood transfusion
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D)
All of the above
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question_answer 111) The study of life forms and environment of past ages is called
A)
Ecology
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B)
Geoecology
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C)
Palaeoecology
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D)
Neoecology
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question_answer 112) Entamoeba differs from Amoeba in
A)
having a large number of contractile vacuoles
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B)
having two contractile vacuoles
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C)
having no contractile vacuole
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D)
None of the above
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question_answer 113) Inulin is a polymer of
A)
glucose
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B)
fructose
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C)
lactose
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D)
galactose
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question_answer 114) Which of the following is most abundan enzymatic protein in plants?
A)
Ribozyme
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B)
Rubisco
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C)
Pepsin
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D)
Yeast extract
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question_answer 115) The interval between infection and appearance of disease is known as
A)
incubation period
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B)
inoculation
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C)
penetration
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D)
infection period
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question_answer 116) \[\alpha \]- helical model of protein was proposed by
A)
Pauling and Corey
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B)
Stanley
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C)
Webster
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D)
Robert Brown
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question_answer 117) Hurlers disease is caused by
A)
absence of lysosome
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B)
absence of reductase
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C)
absence of lomasomes
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D)
absence of \[\alpha \]-protein
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question_answer 118) Which of the following is anucleated living plant cell?
A)
Sieve tube
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B)
Vessel
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C)
Tracheid
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D)
All of these
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question_answer 119) Oil storing plastids are called
A)
amyloplast
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B)
elaioplast
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C)
chromoplast
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D)
chloroplast
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question_answer 120) Which of the following cells of Leucosotenia sponge is self replicating and capable of giving rise to all other types of cells?
A)
Amoebocyte
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B)
Chromocyte
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C)
Choanocyte
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D)
Collenocyte
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question_answer 121) Incomplete dominance is shown by
A)
Pisum sativum
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B)
Neurospora crassa
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C)
Mirabilis jalapa
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D)
Saccharum
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question_answer 122) Which of the following is an ammonifying bacterium?
A)
Clostridium
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B)
Azotobacter
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C)
Nitrosococcus
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D)
Bacillus ramosus
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question_answer 123) In Selaginella, normally the number of prothallial cell is
A)
one
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B)
two
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C)
three
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D)
numerous
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question_answer 124) Hybrid vigour is due to
A)
heterozygosity
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B)
superiority of genes
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C)
homozygosity
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D)
mixing of cytoplasm of male and female gametes
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question_answer 125) Agar - agar is obtained from
A)
red algae
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B)
brown algae
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C)
cyanobacteria
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D)
Both (a) and (b)
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question_answer 126) Coralloid roots belong to
A)
Cycos
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B)
Pinus
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C)
Fern
done
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D)
Selaginella
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question_answer 127) An efficient root inducing chemical useful in horticulture is
A)
GAA
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B)
IBA
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C)
NAA
done
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D)
2, 4-D
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question_answer 128) Which of the following is synthesized in the dark- reaction of photosynthesis?
A)
NADPH2
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B)
ATP
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C)
Oxygen
done
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D)
PGA
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question_answer 129) The effect of pollen on the character of seed coat or pericarp is called
A)
ruminate endosperm
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B)
xenia
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C)
metaxenia
done
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D)
None of the above
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question_answer 130) Shell of Mollusca is produced by its
A)
radulla
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B)
thorax
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C)
mantle
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D)
abdomen
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question_answer 131) The main function of loop of Hente is
A)
conservation of water
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B)
filtration of blood
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C)
formation of urine
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D)
filtration of urine
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question_answer 132) Salmon fishes are also known as
A)
cod fish
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B)
trout
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C)
cartilaginous fish
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D)
bony fish
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question_answer 133) In mammals, digestion of starch starts from
A)
mouth
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B)
stomach
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C)
oesophagus
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D)
duodenum
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question_answer 134) Green muffler is used against, which type of pollution?
A)
air
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B)
water
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C)
soil
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D)
noise
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question_answer 135) The joint between human skull bones is called
A)
fibrous
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B)
synovial
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C)
cartilaginous
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D)
hinge
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question_answer 136) Which of the following is not an amino acid?
A)
Arginine
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B)
Lysine
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C)
Thymine
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D)
Tryptophan
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question_answer 137) The extra embryonic membranes of mammalian embryo are derived from
A)
trophoblast
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B)
formative cells
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C)
follicle cells
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D)
inner cell mass
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question_answer 138) Any plant susceptible to any disease is commonly known as
A)
tolerant host
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B)
inoculation
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C)
host
done
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D)
colonization
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question_answer 139) Minimata disease was caused due to pollution of water with
A)
AgNO3
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B)
oil
done
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C)
mercuric chloride
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D)
DDT
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question_answer 140) Aggregate fruit develops from
A)
syncarpous ovary
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B)
multicarpellary, syncarpous ovary
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C)
unilocular ovary
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D)
multicarpellary, apocarpous ovary
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question_answer 141) Which of the following is a sex-linked character?
A)
Polio
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B)
Diabetes
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C)
Baldness
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D)
Colorblindness
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question_answer 142) Urinary bladder is absent in
A)
reptiles
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B)
aves
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C)
amphibians
done
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D)
mammals
done
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question_answer 143) Which of the following disease occurs only in males?
A)
Fabrys disease
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B)
Gauchers disease
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C)
Lesch- Nyhan disease
done
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D)
Hunters disease
done
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question_answer 144) The Taj Mahal is threatened due to effect of
A)
chlorine
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B)
hydrogen
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C)
sulphur dioxide
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D)
oxygen
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question_answer 145) Haploid endosperm is found in
A)
wheat
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B)
gram
done
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C)
gymnosperm
done
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D)
algae
done
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question_answer 146) Which of the following ecosystem has the highest gross primary productivity?
A)
Rain forest
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B)
Grassland
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C)
Coral reef
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D)
Mangroves
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question_answer 147) In double fertilization, second male gamete and secondary nucleus fuse to form
A)
embryo
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B)
embryo sac
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C)
endosperm
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D)
gamete
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question_answer 148) The biofertilizers are
A)
cowdung, manure
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B)
Anabaena and Azolla
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C)
chemical manure
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D)
All of the above
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question_answer 149) VNTRs is used in
A)
regulation of plant growth hormones
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B)
increasing the rate of photosynthesis in plant of desert zones
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C)
DNA fingerprinting
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D)
protoplasmic culture
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question_answer 150) Mental retardation in man associated with sex chromosomal abnormality is usually due to
A)
reduction in X complement
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B)
increase in X complement
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C)
moderate increase in Y complement
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D)
large increase in X complement
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question_answer 151) What base is responsible for hot spots in spontaneous point mutation?
A)
Adenine
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B)
Guanine
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C)
5- bromouracil
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D)
5- methylcytocine
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question_answer 152) A fruit, developing from an inflorescence is called
A)
etaerio
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B)
composite fruit
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C)
achene
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D)
berry
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question_answer 153) The plants may face wilting due to use of excess fertilizers because of
A)
endosmosis
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B)
exosmosis
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C)
imbibition
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D)
transpiration
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question_answer 154) Banana is propagated by
A)
seeds
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B)
leaf base
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C)
suckers
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D)
stem
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question_answer 155) In which type of ovule, micropyle, chalaza, funicle are in one vertical plane?
A)
Orthotropous
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B)
Anatropous
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C)
Circinotropous
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D)
Amphitropous
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question_answer 156) Brain sand is found in
A)
pineal body
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B)
thymus gland
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C)
thyroid gland
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D)
pituitary gland
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question_answer 157) Thylakoids are present in
A)
nucleus
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B)
mitochondria
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C)
chloroplast
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D)
cytoplasm
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question_answer 158) Sexual reproduction is absent in
A)
Mango
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B)
Cycos
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C)
Pinus
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D)
E. coli
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question_answer 159)
Match List- I (lamina shape) with List- II (examples in which they are found) and select the correct answer using the codes given below the lists. List - I List - II A. B. C. D. Acicular Linear Lanceolate Oblong 1. 2. 3. 4. Grass Nerium Banana Pine
A)
A B C D 4 1 2 3
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B)
4 1 3 2
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C)
4 2 3 1
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D)
4 3 2 1
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question_answer 160) Monocarpic plant is
A)
neem
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B)
bamboo
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C)
apple
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D)
mango
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question_answer 161) Sporangia bearing leaf is called
A)
cataphyll
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B)
sporophyll
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C)
leaflet
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D)
cladophyll
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question_answer 162) BOD stands for
A)
biological oxide demand
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B)
biological oxygen deduction
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C)
basic oxygen demand
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D)
biological oxygen demand
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question_answer 163) The book Origin of Species is written by
A)
Aristotle
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B)
Darwin
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C)
Watson
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D)
Lamarck
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question_answer 164) Product of photosynthesis in blue-green algae is
A)
glycogen like
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B)
glucoside
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C)
globulin
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D)
glycerophosphate
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question_answer 165) Pasteur used the term for fermentation
A)
zymogenosis
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B)
zymosis
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C)
anaerobic respiration
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D)
combustion
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question_answer 166) The first dicarboxylic acid in Krebs cycle is
A)
isocitric acid
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B)
pyruvic acid
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C)
oxalo acetic acid
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D)
\[\alpha \]- ketoglutaric acid
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question_answer 167) Chromosomes with median centromere and equal arms are termed
A)
telocentric
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B)
acentric
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C)
metacentric
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D)
submetacentric
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question_answer 168) Husk fibre coir of commerce is obtained from which part of Cocos nucifera?
A)
Epicarp
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B)
Endocarp
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C)
Mesocarci
done
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D)
Seed coat
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question_answer 169) The brood pouch in sea horse is found at the belly of
A)
male
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B)
female
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C)
absent
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D)
Both (a) and (b)
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question_answer 170) Flying fish is
A)
Scoliodon
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B)
Hippocampus
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C)
Exocetus
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D)
Torpedo
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question_answer 171) Turtle or tortoise are the members of
A)
Pisces
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B)
Amphibia
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C)
Reptilia
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D)
Mammalia
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question_answer 172) Mammalian character is
A)
seven cervical vertebrae
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B)
pulmonary respiration
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C)
sebaceous glands
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D)
All of the above
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question_answer 173) Which one of the following will be different in different animals?
A)
Carbohydrates
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B)
lipids
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C)
Proteins
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D)
Vitamins
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question_answer 174) Mutualism is
A)
negative relationship
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B)
positive relationship
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C)
non- effective relationship
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D)
harmful relationship
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question_answer 175) What type of plants will flower when short photoperiods are followed by long photoperiods?
A)
Long- short day plants
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B)
Short- long day plants
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C)
Intermediate plants
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D)
None of the above
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question_answer 176) The bacteria breaking complex inorganic compounds in simple form are called
A)
parasites
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B)
scavengers
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C)
transformers
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D)
inducers
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question_answer 177) Carboxy haemoglobin is formed by combining haemoglobin with
A)
\[{{O}_{2}}\]
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B)
\[C{{O}_{2}}\]
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C)
\[CO\]
done
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D)
\[N{{O}_{2}}\]
done
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question_answer 178) Pancoasts syndrome is associated with
A)
neoplasm
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B)
neophrania
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C)
neophilism
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D)
neophobia
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question_answer 179) Nuhns glands are related with
A)
tongue
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B)
ear
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C)
hair
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D)
nose
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question_answer 180) When the Respiratory Quotient (RQ) is greater than 1, it indicates
A)
only aerobic respiration is taking place
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B)
only anaerobic respiration is taking place
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C)
Both (a) and (b)
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D)
None of the above
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question_answer 181) Dark purplish organ lying on the left side of abdomen is called
A)
liver
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B)
spleen
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C)
gallbladder
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D)
appendix
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question_answer 182) An octamer of four histones complexed with DNA is called
A)
endosome
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B)
puff ring
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C)
nucleotine
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D)
nucleosome
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question_answer 183) The leaves of Mimosa pudica when touched, droop down due to
A)
seismonasty
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B)
epinasty
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C)
nyctinasty
done
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D)
All of these
done
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question_answer 184) Corpora quadrigemina is related with
A)
vision
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B)
smell
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C)
taste
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D)
touch
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question_answer 185) Cryopreservation refers to germplasm protection by
A)
breeding with wild varieties
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B)
energy flow through each trophic level
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C)
high temperature treatment
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D)
low temperature treatment
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question_answer 186) Pheromone is
A)
produced by the environment
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B)
produced by the body and released outside
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C)
taken from outside into the body
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D)
it is not a hormone but a pigment
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question_answer 187) The process of maturation of reproductive cells in the testes is known as
A)
spermatocyte
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B)
spermatogenesis
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C)
androgenesis
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D)
spermiogenesis
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question_answer 188) The branch of science dealing with senescence is called
A)
Serology
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B)
Genology
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C)
Gerontology
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D)
Cosmology
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question_answer 189) Foolish seedling disease is associated with the discovery of
A)
auxin
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B)
gibberellin
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C)
cytokinin
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D)
abscisic acid
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question_answer 190) Female Anopheles is
A)
endogenous host for Plasmodium
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B)
exogenous host for Plasmodium
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C)
initial host
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D)
None of the above
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question_answer 191) Ultrastructure of gene includes
A)
cistron
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B)
muton
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C)
recon
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D)
All of these
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question_answer 192) Family- Leguminosae is divided on the basis of
A)
gynoecium
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B)
corolla
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C)
aestivation of calyx and corolla
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D)
corolla and androecium
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question_answer 193) Which of the following is communicable disease?
A)
Influenza
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B)
Diabetes
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C)
Hypertension
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D)
Kwoshiorkor
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question_answer 194) Y-chromosome of Drosophila contains genes for
A)
maleness
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B)
femaleness
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C)
infertility
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D)
None of the above
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question_answer 195) Interferons were discovered by
A)
Gajdusek
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B)
Stanley and Prusiner
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C)
Isaacs and Lindemann
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D)
Randies
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question_answer 196) Which of the following is a living fossil?
A)
Nautilus
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B)
Peripatus
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C)
Limulus
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D)
All of these
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question_answer 197) Sudden reappearance of some ancestral feature is
A)
atavism
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B)
segregation
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C)
epistasis
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D)
hypostasis
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question_answer 198) Which of the following is a pesticide?
A)
DDT
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B)
BHC
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C)
Aldrin
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D)
All of these
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question_answer 199) Glycolate cycle is meant for the metabolism a
A)
carbohydrates
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B)
amino acids
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C)
proteins
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D)
lipids
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question_answer 200) Cheese is prepared by using enzyme
A)
trypsin
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B)
rennin
done
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C)
zymase
done
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D)
dextran
done
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