Planck's constant has the dimensions (unit) of
A)
Energy
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B)
Linear momentum
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C)
Work
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D)
Angular momentum
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Dimensions of resistance in an electrical circuit, in terms of dimension of mass M, of length L, of time T and of current I, would be:
A)
\[[M{{L}^{2}}{{T}^{-3}}{{I}^{-1}}]\]
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B)
\[[M{{L}^{2}}{{T}^{-2}}]\]
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C)
\[[M{{L}^{2}}{{T}^{-1}}{{I}^{-1}}]\]
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D)
\[[M{{L}^{2}}{{T}^{-3}}{{I}^{-2}}]\]
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Which of the following is a one-dimensional motion?
A)
Landing of an aircraft
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B)
Earth revolving around the sun
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C)
Motion of wheels of a moving trains
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D)
Train running on a straight track
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A police jeep is chasing with, velocity of 45 km/h a thief in another jeep moving with velocity 153 km/h. Police fires a bullet with muzzle velocity of 180 m/s. The velocity it will strike the car of the thief is
A)
150 m/s
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B)
27 m/s
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C)
450 m/s
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D)
250 m/s
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The angle between the two vectors\[\vec{A}=3\hat{i}+4\hat{j}+5\hat{k}\]and\[\vec{B}=3\hat{i}+4\hat{j}-5\hat{k}\] will be
A)
zero
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B)
\[{{45}^{o}}\]
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C)
\[{{90}^{o}}\]
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D)
\[{{180}^{o}}\]
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A particle staring from the origin (0, 0) moves in a straight line in the \[(x,y)\] plane. Its coordinates at a later time are\[(\sqrt{3},3).\]The path of the particle makes with the A'-axis an angle of:
A)
\[{{30}^{o}}\]
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B)
\[{{45}^{o}}\]
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C)
\[{{60}^{o}}\]
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D)
\[{{0}^{o}}\]
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Two bodies of mass 3 kg and 4 kg are suspended at the ends of massless string passing over a frictionless pulley. The acceleration of the system is \[(g=9.8\,m/{{s}^{2}})\]
A)
\[~4.9\text{ }m/{{s}^{2}}\]
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B)
\[~2.45\text{ }m/{{s}^{2}}\]
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C)
\[~1.4\text{ }m/{{s}^{2}}\]
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D)
\[~9.5\text{ }m/{{s}^{2}}\]
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A monkey of mass 20 kg is holding a vertical rope. The rope will not break when a mass of 25 kg is suspended from it but will break if the mass exceeds 25 kg. What is the maximum acceleration with which the monkey can climb up along the rope.\[(g=10\,m/{{s}^{2}})\]
A)
\[~10\text{ }m/{{s}^{2}}\]
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B)
\[~25\text{ }m/{{s}^{2}}\]
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C)
\[~2.5\text{ }m/{{s}^{2}}\]
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D)
\[~5\text{ }m/{{s}^{2}}\]
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The potential energy of a certain spring when stretched through a distance 'S' is 10 joule. The amount of work (in joule) that must be done on this spring to stretch it through an additional distance 'S' will be
A)
30
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B)
40
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C)
10
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D)
20
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A bomb of mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The velocity of 18 kg mass is\[6\,m{{s}^{-1}}.\]The kinetic energy of the other mass is
A)
256 J
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B)
486 J
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C)
524 J
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D)
324 J
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The angular velocity of second's hand of a watch will be
A)
\[\frac{\pi }{60}rad/\sec \]
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B)
\[\frac{\pi }{30}rad/\sec \]
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C)
\[60\,\pi \,rad/\sec \]
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D)
\[30\,\pi \,rad/\sec \]
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A wheel has angular acceleration of \[3.0\text{ }rad/{{s}^{2}}\]and an initial angular speed of 2.00 rad/s. In a time of 2 s it has rotated through an angle (in radian) of
A)
6
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B)
10
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C)
12
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D)
4
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Two spheres of masses m and M are situated in air and the gravitational force between them is F. The space around the masses is now filled with a liquid of specific gravity 3. The gravitational force will now be
A)
\[\frac{F}{9}\]
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B)
3F
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C)
F
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D)
\[\frac{F}{3}\]
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Radius of orbit of satellite of earth is R, Its kinetic energy is proportional to
A)
\[\frac{1}{R}\]
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B)
\[\frac{1}{\sqrt{R}}\]
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C)
R
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D)
\[\frac{1}{{{R}^{3/2}}}\]
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A log of wood of mass 120 kg floats in water, The weight that can be put on the raft to make it just sink should be (density of wood\[600\text{ }kg/{{m}^{3}}\] )
A)
80 kg
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B)
5 0kg
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C)
60 kg
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D)
30 kg
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The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?
A)
Length = 50 cm, diameter = 0.5 mm
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B)
Length =100 cm, diameter == 1 mm
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C)
Length = 200 cm, diameter = 2 mm
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D)
Length = 300 cm, diameter = 3 mm
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The energy supply being cut-off, an electric heater element cools down to the temperature of its surroundings, but it will not cool further because
A)
supply is cut off
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B)
it is made of metal
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C)
surroundings are radiating
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D)
element and surroundings have the same temperature.
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Newton's law of cooling is used in laboratory for the determination of the
A)
specific heat of the gases
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B)
the latent heat of gases
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C)
specific heat of liquids
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D)
latent heat of liquids
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If the door of a refrigerator is kept open, then which of the following is true
A)
Room is cooled
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B)
Room is heated
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C)
Room is either cooled or heated
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D)
Room is neither cooled nor heated
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One mole of an ideal gas at an initial temperature of TK does 6R joules of work adiabatically. If the ratio of specific heats of this gas at constant pressure and at constant volume is 5/3, the final temperature of gas will be:
A)
\[(T+2.4)K\]
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B)
\[(T-2.4)K\]
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C)
\[(T+4)K\]
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D)
\[(T-4)K\]
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A particle doing simple harmonic motion, amplitude = 4 cm, time period =12 sec. The ratio between time taken by it in going from its mean position to 2 cm and from 2 cm to extreme position is
A)
1
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B)
1/3
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C)
1/4
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D)
1/2
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The potential energy of a long spring when stretched by 2 cm is U. If the spring is stretcher by 8 cm the potential energy stored in it is:
A)
4 U
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B)
8 U
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C)
16 U
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D)
U/4
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A point source emits sound equally in all directions in a non-absorbing medium. Two points 1 and Q are at distance of 2m and 3 m respectively from the source. The ratio of the intensities of the waves at P and Q is:
A)
9 : 4
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B)
2 : 3
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C)
3 : 2
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D)
4 : 9
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The wave described by \[y=0.25\sin \]\[(10\pi x-2\pi t),\] where\[x\]and y are in metre and (in second, is wave travelling along the Note: Therefore, the wave is travelling along +ve direction with frequency 1 Hz and wavelength 0.2m.
A)
-ve\[x-\]direction with frequency 1 Hz
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B)
+ve\[x-\]direction with frequency n Hz and wavelength\[\lambda =0.2\,m\]
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C)
+ve\[x-\]direction with frequency 1 Hz and wavelength\[\lambda =0.2\,m\]
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D)
-ve \[x-\]direction with amplitude 0.25 m and Wavelength\[\lambda =0.2\,m\]
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A simple pendulum of period T has a metal bot which is negatively charged. If it is allowed to oscillate above a positively charged metal plate its period will
A)
remains equal to T
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B)
less than T
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C)
greater than T
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D)
infinite
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An electric dipole of moment \[\vec{P}\]is lying along a uniform electric field\[\vec{E}.\] The work done in rotating the dipole by \[{{90}^{o}}\] is:
A)
\[\sqrt{2}\,pE\]
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B)
\[\frac{pE}{2}\]
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C)
\[2pE\]
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D)
pE
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In a parallel plate capacitor, the distance between the plates is d and potential difference across the plates is V. Energy stored per unit volume between the plates of capacitor is
A)
\[\frac{{{Q}^{2}}}{2{{V}^{2}}}\]
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B)
\[\frac{1}{2}{{\varepsilon }_{0}}\frac{{{V}^{2}}}{{{d}^{2}}}\]
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C)
\[\frac{1}{2}\frac{{{V}^{2}}}{{{\varepsilon }_{0}}{{d}^{2}}}\]
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D)
\[\frac{1}{2}{{\varepsilon }_{0}}\frac{{{V}^{2}}}{d}\]
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A bullet of mass 2 gm is having a charge of\[2\,\mu C.\] Through what potential difference must it be accelerated, starting from rest, to acquire a speed of 10 m/s
A)
5kV
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B)
50 kV
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C)
5 V
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D)
50 V
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Resistances n, each of r ohm, when connected in parallel give an equivalent resistance of R ohm. If these resistances were connected in series, the combination would have a resistance in ohms, equal to
A)
\[{{n}^{2}}R\]
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B)
\[R/{{n}^{2}}\]
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C)
\[R/n\]
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D)
nR
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A capacitor is connected to a cell of emf E having some internal resistance r. The potential difference across the
A)
Cell is < E
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B)
Cell is E
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C)
Capacitor is > E
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D)
Capacitor is < E
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When three identical bulbs of 60 W, 200 V rating are connected in series to a 200 V supply, the power drawn by them will be
A)
60 W
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B)
180 W
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C)
10 W
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D)
20 W
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A steady current of 1.5 A flows through a copper volammeter for 10 min. If the electrochemical equivalent of copper is\[30\times {{10}^{-5}}g{{C}^{-1}},\] the mass of copper deposited on the electrode will be
A)
0.40 g
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B)
0.50 g
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C)
0.67 g
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D)
0.27 g
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Two free parallel wires carrying currents in opposite direction
A)
Attract each other
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B)
Repel each other
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C)
Neither attract nor repel
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D)
Get rotated to be perpendicular to each other
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A beam of electrons passes undeflected through mutually perpendicular electric and magnetic fields. If the electric field is switched off, and the same magnetic field is maintained, the electrons move:
A)
in an elliptical orbit
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B)
in a circular orbit
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C)
along a parabolic path
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D)
along a straight line
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A bar magnet has a magnetic moment equal to \[5\times {{10}^{-5}}\times weber\times m.\] It is suspended in a mag- netic field which has a magnetic induction \[\text{(B)}\] equal to\[8\pi \times {{10}^{-4}}\] tesla. The magnet vibrates with a period of vibration equal to 15 sec. The moment of inertia of the magnet is
A)
\[22.5\,kg\times {{m}^{2}}\]
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B)
\[11.25\times kg\times {{m}^{2}}\]
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C)
\[5.62\times kg\times {{m}^{2}}\]
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D)
\[7.16\times {{10}^{-7}}\,kg\,{{m}^{2}}\]
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There are four light-weight-rod sample A, B, C, D separately suspended by threads. A bar magnet is slowly brought near each sample and the following observations are noted
(i) A is feebly repelled (ii) B is feebly attracted (iii) C is strongly attracted (iv) D remains unaffected
Which one of the following is true?
A)
C is of diamagnetic material
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B)
D is of a ferromagnetic material
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C)
A is of a non-magnetic material
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D)
B is of paramagnetic material
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The wing span of an aeroplane is 20 metre. It is flying in a field, where the vertical component of magnetic field of earth is\[5\times {{10}^{-5}}\]tesla, with velocity 360 km/h. The potential difference produced between the blades will be
A)
0.10 V
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B)
0.15V
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C)
0.20V
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D)
0.30V
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A rectangular, a square, a circular and an el- liptical loop, all in the\[(x-y)\] plane, are moving out of a uniform magnetic field with a constant velocity,\[\vec{V}=v\hat{i}.\]The magnetic field is directed along the negative z-axis direction. The induced emf, during the passage of these loops, out of the field region, will not remain constant for
A)
the rectangular, circular and elliptical loops
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B)
the circular and the elliptical loops
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C)
only the elliptical loop
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D)
any of the four loops
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A coil of inductive reactance\[31\,\Omega \]has a resistance of\[8\,\Omega .\]It is placed in series with a condenser of capacitive reactance\[25\,\Omega \]. The combination is connected to an AC source of 110 V. The power factor of the circuit is
A)
0.56
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B)
0.64
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C)
0.80
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D)
0.33
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An AC voltage is applied to a resistance R and an inductor L in series. If R and the inductive reactance are both equal to\[3\,\Omega ,\] the phase difference between the applied voltage and the current in the circuit is
A)
\[\pi /4\]
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B)
\[\pi /2\]
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C)
zero
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D)
\[\pi /6\]
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The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma rays is
A)
gamma rays, ultraviolet, infrared, micro- waves
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B)
microwaves, gamma rays, infrared, ultra- violet
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C)
infrared, microwave, wave, ultraviolet, gamma rays
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D)
microwave infrared, ultraviolet, gamma rays
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The energy of the electromagnetic waves is of the order of 15 keV. To which part of the spectrum does it belong?
A)
\[\gamma -\]rays
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B)
X-rays
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C)
Infrared rays
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D)
Ultraviolet rays
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The sun makes \[{{0.5}^{o}}\] angle on earth surface. Its image is made by convex lens of 50 cm focal length. The diameter of the image will be
A)
5 mm
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B)
4.36 mm
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C)
7 mm
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D)
None of these
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A transparent cube of 15 cm edge contains a small air bubble. Its apparent depth when viewed through one face is 6 cm and when viewed through the opposite face is 4 cm. Then the refractive index of the material of the cube is
A)
2.0
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B)
2.5
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C)
1.6
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D)
1.5
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A lens having focal length and aperture of diameter d forms an image of intensity I. Aperture of diameter \[\frac{d}{2}\] in central region of lens is covered by a black paper. Focal length of lens and intensity of image now will be respectively.
A)
\[f\,and\,\frac{1}{4}\]
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B)
\[\frac{3f}{4}\,and\frac{I}{2}\]
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C)
\[f\,and\,\frac{3I}{4}\]
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D)
\[\frac{f}{2}\,and\,\frac{I}{2}\]
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Mole fraction of the solute in a 1,00 molal aqueous solution is:
A)
1.7700
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B)
0.1770
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C)
0.0177
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D)
0.0344
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The mass of electron is\[9.11\times {{10}^{-31}}\,kg,\] Planck constant is \[6.626\times {{10}^{-34}}\,Js,\]the uncertainty involved in the measurement of velocity within a distance of \[0.1\,\overset{\text{o}}{\mathop{\text{A}}}\,\]is
A)
\[5.79\times {{10}^{8}}\,m\,{{s}^{-1}}\]
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B)
\[5.79\times {{10}^{5}}\,m\,{{s}^{-1}}\]
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C)
\[5.79\times {{10}^{6}}\,m\,{{s}^{-1}}\]
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D)
\[5.79\times {{10}^{7}}\,m\,{{s}^{-1}}\]
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View Answer play_arrow
. Which of the following exhibits only +3 oxidation state?
A)
U
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B)
Th
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C)
Pa
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D)
Ac
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In \[NO_{3}^{-}\] ion, number of bond pair and lone pair electrons are respectively
A)
2, 2
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B)
3, 1
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C)
1, 3
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D)
4, 8
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A gaseous mixture was prepared by taking equal moles of CO and\[{{N}_{2}}.\]If the total pressure of the mixture was found to be 1 atmosphere, the partial pressure of the nitrogen \[({{N}_{2}})\] in the mixture is
A)
1 atm
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B)
0.9 atm
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C)
0.8 atm
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D)
0.5 atm
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The molar heat capacity of water at constant pressure P, is \[75\,J{{K}^{-1}}\,mo{{l}^{-1}}.\]When\[1.0\,kJ\]of heat is supplied to 100 g of water which is free to expand, the increase in temperature of water is
A)
1.2 K
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B)
2.4 K
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C)
4.8 K
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D)
6.6 K
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The following equilibrium constants are given
\[{{N}_{2}}+3{{H}_{2}}\rightleftharpoons 2N{{H}_{3}};{{K}_{1}}\] \[{{N}_{2}}+{{O}_{2}}\rightleftharpoons 2NO;{{K}_{2}}\] \[{{H}_{2}}\frac{1}{2}{{O}_{2}}\rightleftharpoons {{H}_{2}}O;{{K}_{3}}\] The equilibrium constant of the reaction\[2N{{H}_{3}}+\frac{5}{2}{{O}_{2}}\rightleftharpoons 2NO+3{{H}_{2}}O\]in terms of \[{{K}_{1}},{{K}_{2}}\]and \[{{K}_{3}}\]
A)
\[K=\frac{{{K}_{2}}\times K_{3}^{2}}{{{K}_{1}}}\]
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B)
\[K=\frac{K_{2}^{2}\times {{K}_{3}}}{{{K}_{1}}}\]
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C)
\[K=\frac{{{K}_{1}}\times {{K}_{2}}}{{{K}_{3}}}\]
done
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D)
\[K=\frac{{{K}_{2}}\times K_{3}^{3}}{{{K}_{1}}}\]
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The rapid change of pH near the stoichiometric point of an acid-base titration is the basic of in dicator detection. pH of the solution is related to the ratio of the concentration of conjugate acid (HIn) and base\[(I{{n}^{-}})\]forms of the indicator by the expression
A)
\[\log \left[ \frac{I{{n}^{-}}}{HIn} \right]=p{{K}_{a}}+pH\]
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B)
\[\log \left[ \frac{HIn}{I{{n}^{-}}} \right]={{K}_{a}}+pH\]
done
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C)
\[\log \left[ \frac{HIn}{I{{n}^{-}}} \right]=pH+p{{K}_{a}}\]
done
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D)
\[\log \left[ \frac{I{{n}^{-}}}{HIn} \right]=pH-p{{K}_{a}}\]
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View Answer play_arrow
Standard reduction potentials of the half reactions are given below
\[{{F}_{2}}(g)+2{{e}^{-}}\xrightarrow{{}}2{{F}^{-}}(aq);{{E}^{o}}=+2.85\,V\] \[C{{l}_{2}}(g)+2{{e}^{-}}\xrightarrow{{}}2C{{l}^{-}}(aq);{{E}^{o}}=+1.36\,V\] \[B{{r}_{2}}(l)+2{{e}^{-}}\xrightarrow{{}}2B{{r}^{-}}(aq);{{E}^{o}}=+1.06\,V\] \[{{I}_{2}}(s)+2{{e}^{-}}\xrightarrow{{}}2{{I}^{-}}(aq);{{E}^{o}}=+0.53\,V\] The strongest oxidation and reducing agents respectively are
A)
\[{{F}_{2}}\]and\[{{I}^{-}}\]
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B)
\[B{{r}_{2}}\]and\[C{{l}^{-}}\]
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C)
\[C{{l}_{2}}\]and\[B{{r}^{-}}\]
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D)
\[C{{l}_{2}}\]and\[{{I}_{2}}\]
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Which one of the following pairs of substances on reaction will not evolve\[{{H}_{2}}\]gas?
A)
Iron and \[{{H}_{2}}S{{O}_{4}}\](aqueous)
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B)
Iron and steam
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C)
Sodium and ethyl alcohol
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D)
Copper and HC1 (aqueous)
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In the replacement reaction
The reaction will be most favourable if M hap- pens to be
A)
Na
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B)
K
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C)
Rb
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D)
Li
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The products obtained fusion of \[BaS{{O}_{4}}\]with \[N{{a}_{2}}C{{O}_{3}}\]is
A)
\[~BaC{{O}_{3}}\]
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B)
BaO
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C)
\[~Ba{{(OH)}_{2}}\]
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D)
\[~BaHS{{O}_{4}}\]
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Aluminium is extracted from alumina \[(A{{l}_{2}}{{O}_{3}})\] by electrolysis of a molten mixture of
A)
\[A{{l}_{2}}{{O}_{3}}+N{{a}_{3}}Al{{F}_{6}}+Ca{{F}_{2}}\]
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B)
\[A{{l}_{2}}{{O}_{3}}+KF+N{{a}_{3}}Al{{F}_{6}}\]
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C)
\[A{{l}_{2}}{{O}_{3}}+HF+NaAl{{F}_{4}}\]
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D)
\[A{{l}_{2}}{{O}_{3}}+Ca{{F}_{2}}+NaAl{{F}_{4}}\]
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Which of the following anion is present in chain structure of silicate?
A)
\[{{[S{{i}_{2}}O_{5}^{2}]}_{n}}\]
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B)
\[{{[SiO_{3}^{2-}]}_{n}}\]
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C)
\[SiO_{4}^{4-}\]
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D)
\[S{{i}_{2}}O_{7}^{6-}\]
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Percentage of Se (atomic mass = 78.4) in per- oxidase anhydrase enzyme is 0.5% by mass, then minimum molecular mass of peroxidase anhydrase enzyme is:
A)
\[1.576\times {{10}^{4}}\]
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B)
\[1.576\times {{10}^{3}}\]
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C)
15.76
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D)
\[21.36\times {{10}^{4}}\]
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View Answer play_arrow
In Duma's method for estimation of nitrogen. 0.25 g of an organic compound gave 40 mL of nitrogen collected at 300 K temperature and 725 mm pressure. If the aqueous tension at 300 K is 25 mm, the percentage of nitrogen in the compound is
A)
16.76
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B)
15.76
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C)
17.36
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D)
18.20
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Which one is not in IUPAC system?
A)
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B)
done
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C)
done
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D)
done
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View Answer play_arrow
In a \[{{S}_{N}}2\]substitution reaction of the type\[R-Br+C{{l}^{-}}\xrightarrow{DMF}R-Cl+B{{r}^{+}}\]. Which one of the following has the highest relative rate?
A)
done
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B)
done
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C)
\[C{{H}_{3}}C{{H}_{2}}Br\]
done
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D)
\[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}Br\]
done
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View Answer play_arrow
The molecular formula of diphenyl methane is\[{{C}_{13}}{{H}_{12}}.\]
How many structural isomers are possible when one of the hydrogen is replaced by a chlorine atom?
A)
6
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B)
4
done
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C)
8
done
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D)
7
done
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View Answer play_arrow
\[C{{H}_{3}}-CHCl-CH-C{{H}_{3}}\]has a chiral centre. Which one of the following represent its R-configuration?
A)
done
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B)
done
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C)
done
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D)
done
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View Answer play_arrow
Which alkene on ozonolysis gives \[C{{H}_{3}}C{{H}_{2}}CHO\] and
A)
done
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B)
\[C{{H}_{3}}C{{H}_{2}}CH=CHC{{H}_{2}}C{{H}_{3}}\]
done
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C)
\[C{{H}_{3}}C{{H}_{2}}CH=CHC{{H}_{3}}\]
done
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D)
done
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View Answer play_arrow
Which one of the following alkenes will react faster with Ha under catalytic hydrogenation conditions? (R = Alkyl Substituent)
A)
done
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B)
done
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C)
done
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D)
done
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View Answer play_arrow
The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was
A)
Ammonia
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B)
Phosgene
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C)
Methylisocyanate
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D)
Methylamine
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View Answer play_arrow
A nuclide of an alkaline earth metal undergoes radioactive decay by emission of the\[\alpha -\]particles in succession. The group of the periodic table to which the resulting daughter element would belong is
A)
group 4
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B)
group 6
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C)
group 16
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D)
group 14
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View Answer play_arrow
The faction of total volume occupied by the atoms present in a simple cube is
A)
\[\frac{\pi }{3\sqrt{2}}\]
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B)
\[\frac{\pi }{4\sqrt{2}}\]
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C)
\[\frac{\pi }{4}\]
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D)
\[\frac{\pi }{6}\]
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View Answer play_arrow
Structure of a mixed oxide is cubic close-packed (ccp). The cubic unit cell of mixed oxide is com- posed of oxide ions. On fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are occupied by a monovalent metal B. The formula of the oxide is
A)
\[AB\,{{O}_{2}}\]
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B)
\[{{A}_{2}}B{{O}_{2}}\]
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C)
\[{{A}_{2}}{{B}_{3}}{{O}_{4}}\]
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D)
\[A{{B}_{2}}{{O}_{2}}\]
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View Answer play_arrow
A solution contains non-volatile solute of molecular mass\[{{M}_{2}}\]. Which of the following can be used to calculate the molecular mass of solute in terms of osmotic pressure? Note: (\[{{m}_{2}}=\]mass of solute, V = volume of solution, \[\pi =\]osmotic pressure)
A)
\[{{M}_{2}}=\left( \frac{{{m}_{2}}}{\pi } \right)VRT\]
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B)
\[{{M}_{2}}=\left( \frac{{{m}_{2}}}{V} \right)\frac{RT}{\pi }\]
done
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C)
\[{{M}_{2}}=\left( \frac{{{m}_{2}}}{V} \right)\pi RT\]
done
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D)
\[{{M}_{2}}=\left( \frac{{{m}_{2}}}{V} \right)\frac{\pi }{RT}\]
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View Answer play_arrow
The cell reaction of a cell is\[Mg(s)+C{{u}^{2+}}(aq)\xrightarrow{{}}Cu(s)+M{{g}^{2+}}(aq)\]. If the standard reduction potentials of Mg and Cu are -2.37 and +0.34 V respectively. The emf of the cell is
A)
2.03 V
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B)
-2.03 V
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C)
+2.71 V
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D)
-2.71 V
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View Answer play_arrow
The rate constant and rate of reaction are same for
A)
first order
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B)
zero order
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C)
second order
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D)
all are wrong
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View Answer play_arrow
Non-electrolyte colloidal surfactants is
A)
\[{{C}_{17}}{{H}_{35}}COONa\]
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B)
done
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C)
\[{{C}_{n}}{{H}_{2n+1}}{{(OC{{H}_{2}}C{{H}_{2}})}_{x}}OH\]
done
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D)
done
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View Answer play_arrow
The substance used in the thermite process of reducing metal ores is
A)
Aluminium
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B)
Thorium
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C)
Heated Pt gauge
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D)
Carbon
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View Answer play_arrow
When\[HN{{O}_{3}}\]is dropped into the palm and washed with water, it turns into yellow. It shows the presence of
A)
\[N{{O}_{2}}\]
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B)
\[{{N}_{2}}O\]
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C)
NO
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D)
\[{{N}_{2}}{{O}_{5}}\]
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View Answer play_arrow
In the reaction\[2Ag+2{{H}_{2}}S{{O}_{4}}\to A{{g}_{2}}S{{O}_{4}}+2{{H}_{2}}O+S{{O}_{2}}{{H}_{2}}S{{O}_{4}}\]acts as
A)
Reducing agent
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B)
Oxidising agent
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C)
Catalytic agent
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D)
Dehydrating agent
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View Answer play_arrow
When chlorine reacts with cold and dilute solution of sodium hydroxide, the products obtained are
A)
\[C{{l}^{-}}+Cl{{O}^{-}}\]
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B)
\[C{{l}^{-}}+ClO_{2}^{-}\]
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C)
\[C{{l}^{-}}+ClO_{3}^{-}\]
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D)
\[C{{l}^{-}}+ClO_{4}^{-}\]
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View Answer play_arrow
Which one of the following configurations represents a noble gas?
A)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}\]
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B)
\[1{{s}^{2}},2{{s}^{2}},2{{p}^{6}},3{{s}^{1}}\]
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C)
\[1{{s}^{2}},2{{s}^{2}},2{{p}^{6}}\]
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D)
\[1{{s}^{2}},2{{s}^{2}},2{{p}^{6}},3{{s}^{2}},3{{p}^{6}},4{{s}^{2}}\]
done
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View Answer play_arrow
Copper sulphate solution reacts with KCN to give
A)
\[Cu{{(CN)}_{2}}\]
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B)
\[CuCN\]
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C)
\[{{K}_{2}}[Cu{{(CN)}_{4}}]\]
done
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D)
\[{{K}_{3}}[Cu{{(CN)}_{4}}]\]
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View Answer play_arrow
\[\left[ Pt{{(N{{H}_{3}})}_{4}}C{{l}_{2}} \right]B{{r}_{2}}\]and\[\left[ Pt{{(N{{H}_{3}})}_{4}}B{{r}_{2}} \right]C{{l}_{2}}\] are related to each other as
A)
optical isomers
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B)
coordinate isomers
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C)
ionization isomers
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D)
linkage isomers
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View Answer play_arrow
2-chlorobutane obtained by chlorination of butane, will be
A)
meso-form
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B)
\[d-\]form
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C)
racemic form
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D)
\[f-\]form
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View Answer play_arrow
Action of water in the presence of sulphuric acid with the following alkenes
(i) and (ii) \[C{{H}_{3}}-CH=C{{H}_{2}}\]gives
A)
(i) and (ii) \[C{{H}_{3}}-\underset{OH}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{3}}\]
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B)
(i) and (ii)\[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}OH\]
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C)
(i) and (ii)\[C{{H}_{3}}-\underset{OH}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{3}}\]
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D)
(i) and (ii) \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}OH\]
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View Answer play_arrow
. In the reaction, product P is
A)
done
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B)
done
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C)
done
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D)
\[{{C}_{6}}{{H}_{5}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-{{C}_{6}}{{H}_{5}}\]
done
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View Answer play_arrow
In a reaction of aniline a coloured product C was obtained.
The structure of C would be:
A)
done
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B)
done
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C)
done
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D)
done
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View Answer play_arrow
Which of the following structure represents the peptide chain?
A)
done
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B)
done
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C)
done
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D)
done
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View Answer play_arrow
Structures of some common polymers are given. Which one is not correctly presents?
A)
\[Nylon-6.6-{{\{NH{{(C{{H}_{2}})}_{6}}NHCO{{(C{{H}_{2}})}_{4}}-CO-\}}_{n}}\]
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B)
\[Teflon-(C{{F}_{2}}-C{{F}_{2}}){{-}_{n}}\]
done
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C)
done
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D)
done
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View Answer play_arrow
Which of the following is considered to be an anticancer species?
A)
done
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B)
done
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C)
done
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D)
done
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View Answer play_arrow
Starch can be used as an indicator for the detection of traces of
A)
Glucose in aqueous solution
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B)
Proteins in blood
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C)
Iodine in aqueous solution
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D)
Urea in blood
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View Answer play_arrow
What is true for photolithotrophs?
A)
Obtain energy from radiations and hydro- gen from organic compounds
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B)
Obtain energy from radiations and hydro- gen from inorganic compounds
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C)
Obtain energy from organic compounds
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D)
Obtain energy from inorganic com- pounds
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View Answer play_arrow
What is true for plasmid?
A)
Plasmids are widely used in gene transfer
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B)
These are found in virus
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C)
Plasmid contain gene for vital activities
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D)
These are main part of chromosome
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View Answer play_arrow
Match items in Column I with those in Column II:
Column I Column II A. Peritrichous flagellation J. Ginkgo B. Living fossil K. Macrocystes C. Rhizophore L. Escherichia coli D. Smallest flowering plant M. Selaginella E. Largest Perennial alga N. Wolffia
Select the correct answer with the following
A)
A-L; B-J; C-M; D-N; E-K
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B)
A-K; B-J; C-L; D-M; E-N
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C)
A-J; B-K; C-N; D-L; E-K
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D)
A-N; B-L; C-KL; D-N; E-J
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View Answer play_arrow
Given below are four matchings of an animal and their respiratory organ:
A. Silver fish Trachea B. Scorpion book lung C. Sea squirt pharyngeal gills D. Dolphin Skin
The correct matching are:
A)
A and D
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B)
A, B and C
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C)
B and D
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D)
C and D
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View Answer play_arrow
Edible part of banana:
A)
Epicarp
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B)
Mesocarp and less developed endocarp
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C)
Endocarp and less developed mesocarp
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D)
Epicarp and mesocarp
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View Answer play_arrow
The cells of the quiescent centre are character- ized by:
A)
Having dense cytoplasm and prominent nuclei
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B)
Having light cytoplasm and small nuclei
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C)
Dividing regularly to add to the corpus
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D)
Dividing regularly to add to tunica
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View Answer play_arrow
During an injury nasal septum gets damaged and for its recovery which cartilage is preferred:
A)
Elastic cartilage
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B)
Hyaline cartilage
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C)
Calcified cartilage
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D)
Fibrous cartilage
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View Answer play_arrow
Areolar connective tissue joins:
A)
Fat body with muscles
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B)
Integument with muscles
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C)
Bones with muscles
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D)
Bones with bones
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View Answer play_arrow
The epithelial tissue present on the inner surface of bronchioles and fallopian tubes is:
A)
Squamous
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B)
Cuboidal
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C)
Glandular
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D)
Ciliated
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View Answer play_arrow
Element necessary for the middle lamella:
A)
Ca
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B)
Zn
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C)
K
done
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D)
Cu
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View Answer play_arrow
Centromere is required for
A)
Movement of chromosomes towards poles
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B)
Cytoplasmic cleavage
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C)
Crossing over
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D)
Transcription
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View Answer play_arrow
The main organelle involved in modification and routing of newly synthesized proteins to their destinations is:
A)
Endoplasmic reticulum
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B)
Lysosome
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C)
Mitochondria
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D)
Chloroplast
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View Answer play_arrow
Spoilage of oil can be detected by which fatty acid:
A)
Oleic acid
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B)
Linolenic acid
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C)
Linoleic acid
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D)
Erucic acid
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View Answer play_arrow
Cancer cells are more easily damaged by radiation than normal cells because they are:
A)
Undergoing rapid division
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B)
Different in structure
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C)
Non-dividing
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D)
Starved of mutation
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View Answer play_arrow
An organic substance bound to an enzyme and essential for its activity is called
A)
Coenzyme
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B)
Holoenzyme
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C)
Apoenzyme
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D)
isoenzyme
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View Answer play_arrow
Given below is a schematic break-up of the phases/stages of cell cycle. Which one of the following is the correct indication stage/phase in the cell cycle?
A)
A-Cytokinesis
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B)
B-Metaphase
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C)
C-Karyokinesis
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D)
D-Synthetic phase
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View Answer play_arrow
Given below is the representation of a certain event at a particular stage of a type of cell division which is this stage:
A)
Prophase of Mitosis
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B)
Both prophase and metaphase of mitosis
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C)
Prophase I during meiosis
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D)
Prophase II during meiosis
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View Answer play_arrow
Arrange the following events of meiosis in correct sequence:
(1) Crossing over (2) Synapsis (3) Terminalisation of chiasmata (4) Disappearance of nucleolus
A)
(2), (3), (4), (1)
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B)
(2), (1), (4), (3)
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C)
(2), (1), (3), (4)
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D)
(1), (2), (3), (4)
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View Answer play_arrow
Stomata of a plant open due to:
A)
Influx of potassium ions
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B)
Efflux of potassium ions
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C)
Influx of hydrogen ions
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D)
Influx of calcium ions
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View Answer play_arrow
Which one of the following statements is correct?
A)
At present it is not possible to grow maize without chemical fertilizers
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B)
Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies
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C)
Both Azotobacter and Rhizobium fix atmospheric nitrogen in root nodules of plants
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D)
Cyanobacteria such as Anabaena and Nostoc are important mobilizers of phosphates and potassium for plant nutrition in soil
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View Answer play_arrow
Parts A, B, C and D of the human eye are shown in the diagram. Select the option which gives correct identification along with its functions/ characteristics:
A)
A-Retina-contains photo receptors-rods and cones.
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B)
B-Blind spot-has only a few rods and cones
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C)
C-Aqueous chamber-reflects the light which does not pass through the lens
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D)
D-choroid-its anterior part forms ciliary body
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View Answer play_arrow
Passive absorption of minerals depend on:
A)
Temperature
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B)
Temperature and metabolic inhibitor
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C)
Metabolic inhibitor
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D)
Humidity
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View Answer play_arrow
The deficiencies of micronutrients affect not only growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport:
A)
Ca, K, Na
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B)
Co, Ni, Mo
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C)
Mn, Co, Ca
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D)
Cu, Mn, Fe
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View Answer play_arrow
Which one of the following is not a micronutrient?
A)
Molybdenum
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B)
Magnesium
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C)
Zinc
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D)
Boron
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View Answer play_arrow
Which pigment system is inactivated in red drop?
A)
PS-I and PS-II
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B)
PS-I
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C)
PS-II
done
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D)
None
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View Answer play_arrow
Stomata of CAM plants:
A)
Are always open
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B)
Open during the day and close at night
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C)
Open during the night and close during the day
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D)
Never open
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View Answer play_arrow
Oxygenic photosynthesis occurs in:
A)
Chlorobium
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B)
Chromatium
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C)
Oscillatoria
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D)
Rhodospirillum
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View Answer play_arrow
The structures that are formed by stacking of organized flattened membranous sacs in the chloroplasts are;
A)
Stroma
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B)
Cristae
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C)
Grana
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D)
Stroma lamellae
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View Answer play_arrow
How many ATP molecules are produced by aerobic oxidation of one molecule of glucose?
A)
2
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B)
4
done
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C)
38
done
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D)
34
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View Answer play_arrow
How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to \[C{{O}_{2}}\]and\[{{H}_{2}}O\]yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal?
A)
Two
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B)
Thirty
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C)
Fifty-seven
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D)
One
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View Answer play_arrow
The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products.
Arrows numbered 4, 8, and 12 can all be
A)
NADH
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B)
ATP
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C)
\[{{H}_{2}}O\]
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D)
\[FAD+or\,FAD{{H}_{2}}\]
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View Answer play_arrow
Which plant is LDP?
A)
Tobacco
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B)
Glycine max
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C)
Mirabilis jalapa
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D)
Spinach
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View Answer play_arrow
Opening of floral buds into flowers is a type of:
A)
Autonomic movement of growth
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B)
Autonomic movement of locomotion
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C)
Autonomic movement of variation
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D)
Paratonic movement of growth
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View Answer play_arrow
Dr F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly cut coleoptile stumps. Of what significance is this experiment?
A)
It made possible the isolation and exact identification of auxin.
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B)
It is the basis for quantitative determination of small amounts of growth- promoting substances.
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C)
It supports the hypothesis that IAA is auxin.
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D)
It demonstrated polar movements of auxins
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View Answer play_arrow
Which one is correctly matched:
A)
Vit.-E -Tocoferol
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B)
Vit. D - Riboflavin
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C)
Vit. B - Calciferol
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D)
Vit. A - Thiamine
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View Answer play_arrow
A patient is generally advised to specially consume more meat, lentils, milk and eggs in diet only when he suffers from:
A)
Anemia
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B)
Scurvy
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C)
Kwashiorkor
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D)
Rickets
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View Answer play_arrow
Select the correct match of the digested products in humans given in column I with their absorption site and mechanism in column II.
A)
Column I Column II Glycine, glucose small intestine, active
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B)
Column I Column II Fructose, \[N{{a}^{+}}\] small intestine, passive absorption
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C)
Column I Column II Glycerol, fatty acids duodenum, move as chylomicrons
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D)
Column I Column II Cholesterol, maltose large intestine, active absorption
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View Answer play_arrow
Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing unusually high content of
A)
Chloroform
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B)
Carbon dioxide
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C)
Carbon monoxide
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D)
Carbon disulphide
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View Answer play_arrow
Listed below are four respiratory capacities (a-d) and four jumbled respiratory volumes of a normal human adult:
Respiratory Capacities volumes [a] Residual volume 2500 mL [b] Vital capacity 3500 mL [c] inspiratory reserve volume 1200 mL [d] Inspiratory capacity 4500 mL
Which one of the following is the correct match- ing of two capacities and volumes?
A)
[b] 2500 mL, [c] 4500 mL
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B)
[c] 1200 mL, [d] 2500 mL
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C)
[d] 3500 mL, [a] 1200 mL
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D)
[a] 4500 mL, [b] 3500 mL
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View Answer play_arrow
The figure shows a diagrammatic view of human respiratory system with labels A, B, C and D. Select the option which gives correct identification and main function and/or characteristic.
A)
A-trachea - long tube supported by complete cartilaginous rings for conducting inspired air
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B)
B-pleural membrane - surround ribs on both sides to provide cushion against rubbing.
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C)
C-Alveoli - thin walled vascular bag like structures for exchange of gases.
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D)
D-Lower end of lungs - diaphragm pulls it down during inspiration.
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View Answer play_arrow
What is correct for Blood group 'O':
A)
No antigens but both a and b antibodies are present
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B)
A antigen and b antibody
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C)
Antigen and Antibody both absent
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D)
A and B antigens and a, b, antibodies
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View Answer play_arrow
Which one of the following has an open circulatory system?
A)
Pheretima
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B)
Periplaneta
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C)
Hirudinaria
done
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D)
Octopus
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View Answer play_arrow
A person with unknown blood group under ABO system has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid certificate of his own blood type offers for blood donation without delay. What would have been the type of blood group of the donor friend?
A)
Type A
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B)
Type B
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C)
Type AB
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D)
Type O
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View Answer play_arrow
If Henle's loop were absent from mammalian nephron, which of the following is to be expected:
A)
There will be no urine formation
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B)
There will be hardly any change in the quality and quantity of urine formed
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C)
The urine will be more concentrated
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D)
The urine will be more dilute
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View Answer play_arrow
Consider the following four statements (i)-(iv) about certain desert animals such as kangaroo- rat.
(i) They have dark colour and high rate of reproduction and excrete solid urine (ii) They do not drink water, breathe at a slow rate to conserve water and have their body covered with thick hairs (iii) They feed on dry seeds and do not required drinking water (iv) They excrete very concentrated urine and do not use water to regulate body temperature.
Out of these four, which two are correct:
A)
(iii) and (i)
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B)
(i) and (ii)
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C)
(iii) and (iv)
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D)
(ii) and (iii)
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Which one of the following option gives the correct categorization of six animals according to the type of nitrogenous wastes, they give out?
A)
Ammonotelic Ureotelic Uricotelic Pigeon, Humans Aquatic Amphibia, Lizards Cockroach, Frog
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B)
Ammonotelic Ureotelic Uricotelic Frog, Lizards Aquatic Amphibia, Humans Cockroach, Pigeon
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C)
Ammonotelic Ureotelic Uricotelic Aquatic Amphibia Frog, Humans Pigeon, Lizards, Cockroach
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D)
Ammonotelic Ureotelic Uricotelic Aquatic Amphibia Cockroach, Humans Frog, Pigeon, Lizards
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Human urine is usually acidic because:
A)
hydrogen ions are actively secreted into the filtrate
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B)
the sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries
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C)
excreted plasma proteins are acidic
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D)
potassium and sodium exchange generates acidity
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Which statement is correct for muscle contraction?
A)
Length of H-zone decreases
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B)
Length of A-band remains constant
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C)
Length of I-band increases
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D)
Length of two Z-line increases
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Which one of the following is the correct matching of three items and their grouping category?
A)
Items Groups Cytosine, uracil, thiamine Pyrimidines
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B)
Items Groups Malleus, incus, cochlea Ear ossicles
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C)
Items Groups Ilium, ischium, pubis Coxal bones of pelvic girdle
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D)
Items Groups Actin, myosin, rodopsin Muscle proteins
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The characteristics and an example of a synovial joint in humans is:
A)
Characteristics Examples Fluid cartilage between two bones, limited movements Knee joint
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B)
Characteristics Examples Fluid filled between two joints, provides cushion Skull bones
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C)
Characteristics Examples Fluid filled synovial cavity between two bones Joint between atlas and axis
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D)
Characteristics Examples Lymph filled between two bones, limited movement Gliding joint between carpals
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What is the intensity of sound in normal conversation?
A)
10-20 decibel
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B)
30-60 decibel
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C)
70-90 decibel
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D)
120-150 decibel
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Parkinson's disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotrans- mitter:
A)
Norepinephrine
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B)
Acetylcholine
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C)
GABA
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D)
Dopamine
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Which one of the following is the correct differ- ence between rod cells and cone cells of our retina?
A)
Rod cells Cone cells Overall function Vision in poor light Colourvision and detailed vision in bright light
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B)
Rod cells Cone cells Distribution More concen- trated in the centre of retina Evenly distributed all over retina
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C)
Rod cells Cone cells Visual acuity High Low
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D)
Rod cells Cone cells Visual pigment lodopsin Rhodopsin
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Which set is similar?
A)
Corpus luteum - Graafian follicles
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B)
Sebum - Sweat
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C)
Bundle of his-Pace maker
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D)
Vita B7 - Niacin
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Which hormone causes dilation of blood vessel increased oxygen consumption an glucogenesis?
A)
ACTH
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B)
Insulin
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C)
Adrenalin
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D)
Glucagon
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Given below is an incomplete table on certain hormones, their source glands and one major effect of each on the body in humans. Identify the correct option for the three blanks A, B and C.
Glands Secretion Effect on Body A Oestrogen Maintenance of secondary sexual characters Alpha cells of Islets of Langerhans B Raises blood sugar level Anterior pituitary C Over section leads to gigantism Visual pigment lodopsin Rhodopsin
A)
A B C Placenta Glucagon Calcitionin
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B)
A B C Ovary Glucagon Growth hormone
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C)
A B C Placenta Insulin Vasopressin
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D)
A B C Ovary Insulin Calcitonin
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Which one of the following hormones though synthesised elsewhere, is stored and released by the master gland?
A)
Melanocyte stimulating hormone
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B)
Antidiuretic hormone
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C)
Luteinizing hormone
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D)
Prolactin
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During regeneration, modification of an organ to other organ is known as:
A)
Morphogenesis
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B)
Epimorphosis
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C)
Morphallaxis
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D)
Accretionary growth
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Select the wrong statement:
A)
Isogametes are similar in structure, function and behavior
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B)
Anisogametes differ either in structure, function of behavior
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C)
In oomycetes female gamete is smaller and motile, while male gamete is larger and non-motile
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D)
Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy
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Adventive embryony in citrus is due to:
A)
Nucllus
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B)
Integuments
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C)
Zygotic embryo
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D)
Fertilized egg
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An ovule which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is:
A)
Campylotropous
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B)
Anatropous
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C)
Orthotropous
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D)
Hemitropous
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Unisexuality of flowers prevents:
A)
geitonogamy, but not xenogamy
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B)
autogamy and geitonogamy
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C)
autogamy, but not geitonogamy
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D)
both geitonogamy and xenogamy
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Perisperm differs from endosperm in:
A)
Being a haploid tissue
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B)
Having no reserve food
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C)
Being a diploid tissue
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D)
Its formation by fusion of secondary nucleus with several sperms
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Which of the following pairs is not correctly matched?
A)
Mode of reproduction Example Conidia Penicillium
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B)
Mode of reproduction Example Offset Water hyacinth
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C)
Mode of reproduction Example Rhizome Banana
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D)
Mode of reproduction Example Binary fission Sargassum
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During embryonic development, the establishment of polarity along anterior/posterior, dorsalventral or medial/lateral axis is called:
A)
Organizer phenomena
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B)
Axis formation
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C)
Anamorphosis
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D)
Pattern formation
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A change in the amount of yolk and its distribution in the egg will effect:
A)
Fertilization
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B)
Formation of zygote
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C)
Pattern of cleavage
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D)
Number of blastomeres produced
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Given below is a diagrammatic sketch for a portion of human male reproductive system. Select the correct set of the names of the parts labelled A, B, C, D.
A)
A B C D Ureter Seminal vesicle Prostate Bulbourethral gland
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B)
A B C D Ureter Prostate Seminal vesicle Bulbouretharal gland
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C)
A B C D Vas deferens Seminal vesicle Prostate Bulbourethral gland
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D)
A B C D Vas deferens Seminal vesicle Bulbourethral gland Prostate
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The figure given below depicts a diagrammatic sectional view of the female reproductive sys- tem of humans. Which one set of three parts out of I-VI have been correctly identified?
A)
(I) Perimetrium, (II) Myometrium, (III) Fallopian tube
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B)
(II) Endometrium, (III) Infundibulum, (IV) Fimbriage
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C)
(III) Infundibulum, (IV) Fimbriae, (V) Cervix
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D)
(IV) Oviducal funnel, (V) Uterus (VI) Cervix
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Which of the following layers in an antral follicle is acellular?
A)
Zona pellucida
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B)
Granulosa
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C)
Thecaintema
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D)
Stroma
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Consider the statements given below regarding contraception and answer as directed thereafter:
(i) Medical Termination of Pregnancy (MTP) during first trimester is generally safe (ii) Generally chances of conception are nil until mother breast-feeds the infant up to two years (iii) Intrauterine devices like copper-T are effective contraceptives (iv) Contraception pills may be taken upto one week after coitus to prevent conception.
Which two of the above statement are correct?
A)
(i), (iii)
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B)
(i), (ii)
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C)
(ii), (iii)
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D)
(iii), (iv)
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What is the figure given below showing in particular?
A)
Tubectomy
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B)
Vasectomy
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C)
Ovarian cancer
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D)
Uterine cancer
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Number of Bar Body in XXXX female:
A)
1
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B)
2
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C)
3
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D)
4
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A plant of Fi-generation has genotype "AABbCC". On selfing of this plant what is the phenotypic ratio in\[{{F}_{2}}-\]generation:
A)
3 : 1
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B)
1 : 1
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C)
9 : 3 : 3 : 1
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D)
27 : 9 : 9 : 9 : 3 : 3 : 3 : 1
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Christmas disease is another name for:
A)
Haemophilia B
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B)
Hepatitis B
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C)
Down's syndrome
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D)
Sleeping sickness
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A self-fertilizing trihybrid plant forms:
A)
4 different gametes and 16 different zygotes
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B)
8 different gametes and 16 different zygotes
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C)
8 different gametes and 32 different zygotes
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D)
8 different gametes and 64 different zygotes
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How many different kinds of gametes will be produced by a plant having the genotype AABbCC?
A)
Three
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B)
Four
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C)
Nine
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D)
Two
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Which one of the following is an example of polygenic inheritance?
A)
Flower colour in Mirabilis jalapa
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B)
Production of male honey bee
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C)
Pod shape in garden pea
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D)
Skin colour in humans
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Study the pedigree chart given below. What does it show?
A)
Inheritance of a recessive sex-linked disease like haemophilia
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B)
Inheritance of a sex-linked inborn error of metabolism like phenylketonuria
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C)
Inheritance of a condition like phenylke- tonuria as an autosomal recessive trait
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D)
The pedigree chart is wrong as this is not possible
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In the following human pedigree, the filled symbols represent the affected individuals. Identify the type of given pedigree. Note:
A)
X-linked dominant
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B)
Autosomal dominant
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C)
X-linked recessive
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D)
Autosomal recessive
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Gene and cistron words are sometimes used synonymously because:
A)
One cistron contains many genes
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B)
One gene contains many cistrons
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C)
One gene contains one cistron
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D)
One gene contains no cistron
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In which condition, the gene ratio remains con- stant for any species:
A)
Sexual selection
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B)
Random mating
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C)
Mutation
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D)
Gene flow
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What is true about T-lymphocytes in mammals?
A)
There are three main types-cytotoxic T-cells, helper T-cells and suppressor T-cells
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B)
These originate in lymphoid tissues
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C)
They scavenge damaged cells and cellular debris
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D)
These are produced in thyroid
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Which of the following plants are used as green manure in crop fields and in sandy soils?
A)
Crotalaria juncea and A lhagi camelorum
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B)
Calotropis procera and Phyllanthus niruri
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C)
Saccharum munja and Lantana camara
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D)
Dichanthium annulatum andAzolla nilotica
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Which one of the following is not used inorganic farming?
A)
Glomus
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B)
Earthworm
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C)
Oscillatoria
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D)
Snail
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Which one of the following palindromic base sequences in DNA can be easily cut at about the middle by some particular restriction enzyme?
A)
5'___CGTTCG____3' 3'____ATGGTA ____5'
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B)
5'____GATATG____3' 3'_____CTACTA ____5'
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C)
5'____GAATTC____3' 3'_____CTTAAG____5'
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D)
5'____CACGTA____3' 3'____CTCAGT____5'
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View Answer play_arrow
Bacillus thuringiensis (Bt) strains have been used for designing novel
A)
Bioinsecticidal plants
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B)
Biomineralization processes
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C)
Biofertilizers
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D)
Biometallurgical techniques
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Certain characteristic demographic features of developing countries are
A)
High fertility, high density, rapidly rising mortality rate and very young age distribution
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B)
High infant mortality, low fertility, uneven population growth and a very young age distribution
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C)
High mortality high density, uneven population growth and a very old age distribution
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D)
High fertility, low or rapidly falling mortality rate, rapid population growth and a very young age distribution
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Bamboo plant is growing in a far forest then what will be the trophic level of it:
A)
First trophic level \[({{T}_{1}})\]
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B)
Second trophic level \[({{T}_{2}})\]
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C)
Third trophic level \[({{T}_{3}})\]
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D)
Fourth trophic level \[({{T}_{4}})\]
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The table below gives the populations (in thousands) of ten species (A-J) in four areas (a-d) consisting of the number of habitats given within brackets against each. Study the table and answer the question which follows:
Area and Number of Habitats Species, and their populations (in thousands] in the areas a (11) A B C D E F G H I J b (11) 2.3 1.2 0.52 6.0 - 3.1 1.1 9.0 - 10. c (11) 10.2 - 0.62 - 1.5 3.0 - 8.2 1.1 11.2 d (13) 11.3 0.9 0.48 2.4 1.4 4.2 0.8 8.4 2.2 4.1 d(12) 3.2 10.2 11.1 4.8 0.4 3.3 0.8 7.3 11.3 2.1
Which area out of \[a\] to \[d\] shows maximum species diversity?
A)
d
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B)
a
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C)
b
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D)
c
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Which of the following is absent in polluted water?
A)
Hydrilla
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B)
Water hyacinth
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C)
Larva of stone fly
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D)
Blue green algae
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