question_answer 1) If C and R denote capacity and resistance, the dimensions of C R are :
A)
\[{{M}^{0}}{{L}^{0}}T\]
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B)
\[M{{L}^{0}}T\]
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C)
\[{{M}^{0}}{{L}^{0}}{{T}^{0}}\]
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D)
not expressible in terms of M, L and T
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question_answer 2) An arrow is shot into in. its range is 200 m and its time of flight is 5 s. If \[g=10\,m/{{s}^{2}},\]then the horizontal component of velocity of the arrow is :
A)
12.5 m/s
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B)
250 m/s
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C)
31.25 m/s
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D)
40 m/s
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question_answer 3) A force of 49 newton is just able to move a block of wood weighting 10 kg on a rough horizontal surface- Its coefficient of friction is:
A)
1
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B)
0.7
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C)
0.5
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D)
zero
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question_answer 4) Two bodies of masses m and 2 m have equal kinetic energies. The ratio of their linear momenta is :
A)
\[1\]
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B)
\[\frac{1}{2}\]
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C)
\[0.5\]
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D)
\[2\]
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question_answer 5) A ball of mass ' m' elastically collides with a wall with velocity \['\upsilon '\] then change in its momentum is equal to :
A)
\[2m\]
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B)
\[2\,m\upsilon \]
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C)
\[+8m\upsilon \]
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D)
Zero
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question_answer 6) A solid sphere is rotating about a diameter at an angular velocity \[\omega .\] If it cools so that its radius reduces to\[\frac{1}{n}\] of its original value, its angular velocity of becomes :
A)
\[\frac{\omega }{n}\]
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B)
\[\frac{\omega }{{{n}^{2}}}\]
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C)
\[n\omega \]
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D)
\[{{n}^{2}}\omega \]
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question_answer 7) Two satellites A and B go around planet P in circular orbits having radius 4R and R respectively. If the speed of satellite A is \[3\upsilon \] then the speed of satellite B will be :
A)
\[6\upsilon \]
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B)
\[9\upsilon \]
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C)
\[3\upsilon \]
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D)
none of these
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question_answer 8) When a drop splits up into a number of drops, then :
A)
Area increases
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B)
Volume increases
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C)
Energy is absorbed
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D)
Energy is liberated
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question_answer 9) A 5maluminium wire \[(\gamma =7\times {{10}^{10}}N/{{m}^{2}})\]of diameter 3mm supports a 40 kg mass. In order to have the same elongation in a copper wire \[(\gamma =12\times {{10}^{10}}N/{{m}^{2}})\] of the same length under the same weight, the diameter should be in mm :
A)
1.75
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B)
2.0
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C)
2:3
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D)
5.0
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question_answer 10) At which of the following temperature, the value of surface tension of water is minium?
A)
\[4{}^\circ C\]
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B)
\[25{}^\circ C\]
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C)
\[50{}^\circ C\]
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D)
\[75{}^\circ C\]
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question_answer 11) In isochoric process :
A)
\[\Delta \omega =0\]
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B)
\[\Delta \omega =0\]
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C)
\[\Delta a=0\]
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D)
\[\Delta T=0\]
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question_answer 12) If the temperature difference on the two sides of a wall increases from 100°C to 200°C, its thermal conductivity :
A)
remains unchanged
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B)
is doubled
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C)
is halned
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D)
becomes four times
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question_answer 13) Let there be four articles having colours blue, red, black and white. When they are heated together and allowed to cool, which article will cool at the earliest?
A)
Blue
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B)
Red
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C)
Black
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D)
White
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question_answer 14)
An ideal gas is taken through the cycle \[A\to B\to C\to A,\] as shown in figure. If the net heat supplied to the gas in the cycle is 5J, the work done by the gas in the process.\[C\to A\] A is :
A)
-5J
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B)
-10J
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C)
-15J
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D)
-20J
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question_answer 15) A piece of red glass when heated in dark to red hot state will appear to be :
A)
White
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B)
Red
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C)
Green
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D)
Invisible
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question_answer 16) The period of oscillation of a simple pendulum of constant length at surface of the earth is T. Its time period inside a mine will be :
A)
cannot be compared.
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B)
equal to T
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C)
less than T
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D)
more than T
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question_answer 17) A particle executing simple harmonic motion has a time peiod of 4 sec. After how much internal of time from \[t=0\]will its displacement be half of its amplitude :
A)
\[\frac{1}{3}\]sec
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B)
\[\frac{1}{2}\]sec
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C)
\[\frac{2}{3}\] sec
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D)
\[\frac{1}{6}\] sec
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question_answer 18) A train approaches a stationary observer the velocity of train being\[\frac{1}{20}\]of the velocity of sound. A sharp blast is blown with the whistle of the engine at equal intervals of a second. The interval between the successive blasts as heard by the observer?
A)
\[\frac{1}{20}\] sec
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B)
\[\frac{1}{20}\] min
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C)
\[\frac{19}{20}\] sec
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D)
\[\frac{19}{20}\] min
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question_answer 19) Which of the following equations represents a wave travelling along \[y\]-axis?
A)
\[y\] = A sin \[(x-\omega t)\]
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B)
\[x\] = A sin \[(Ky-\omega t)\]
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C)
\[y\] = A sin \[Ky\cos \omega t\]
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D)
\[y\] = A cos\[Ky\sin \omega t\]
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question_answer 20) The difference between soft and hard \[x\]-rays is of :
A)
velocity
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B)
intensity
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C)
frequency
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D)
polarization
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question_answer 21) The capacity of an isolated conducting sphere of radius R is proportional to :
A)
\[{{R}^{2}}\]
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B)
\[\frac{1}{{{R}^{2}}}\]
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C)
\[\frac{1}{R}\]
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D)
\[R\]
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question_answer 22) Two spheres of radii \[{{R}^{2}}\] and \[{{R}_{1}}\]respectively are charged and joined by a wire. The ratio of electric field of spheres is:
A)
\[R_{2}^{2}/R_{1}^{2}\]
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B)
\[R_{1}^{2}/R_{2}^{2}\]
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C)
\[{{R}_{2}}/{{R}_{1}}\]
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D)
\[{{R}_{1}}/{{R}_{2}}\]
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question_answer 23) If a positive charge is shifted from a low potential region to a high potential region, the electric potential energy :
A)
decreases
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B)
increases
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C)
remains the same
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D)
may increase or decrease
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question_answer 24)
The equivalent resistance between A and B is :
A)
10 \[\Omega \]
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B)
20 \[\Omega \]
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C)
30 \[\Omega \]
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D)
40\[\Omega \]
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question_answer 25) An electrical cable of copper has just one wire of radius 9 mm. Its resistance is 5\[\Omega .\] the single wire of the cable is replaced by 6 different well insulated copper wires each of radius 3 mm. The total resistance of the cable will now be equal to :
A)
27\[\Omega \]
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B)
90 \[\Omega \]
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C)
4\[\Omega \]
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D)
7.5 \[\Omega \]
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question_answer 26) A current of 2 ampere flowing through a conductor produces 80 joule of heat in ten seconds. The resistance of the conductor is :
A)
0.5\[\Omega \]
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B)
2\[\Omega \]
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C)
4\[\Omega \]
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D)
20\[\Omega \]
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question_answer 27) A thermo electric refrigerator works on :
A)
Joule effect
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B)
See back effect
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C)
Peltier effect
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D)
Thermionic effect
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question_answer 28) A small circular flexible loop of wire of radius ' r' cories a current \[I.\] It is placed in a uniform magnetic field B. The tension in the loop will be doubled if :
A)
\[I.\] is doubled
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B)
B is halved
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C)
r is doubled
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D)
both B and \[I.\] are doubled
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question_answer 29) Two parallel wires carrying current in the same direction attract each other because of :
A)
potential difference between them
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B)
mutual inductance between them
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C)
electric force between them
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D)
magnetic force between them
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question_answer 30) A hydrogen atom is paramagnetic. A hydrogen molecule is :
A)
diamagnetic
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B)
paramagnetic
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C)
ferromagnetic
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D)
none of these
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question_answer 31) A galvanometer has resistance of 400\[\Omega \]and deflects full scale for current of 0.2 mA through it. The shunt resistance required to covert it into 3A ammeter is :
A)
0.027\[\Omega \]
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B)
0.054\[\Omega \]
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C)
0.0135\[\Omega \]
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D)
none of these
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question_answer 32) The power factor of a series LCR circuit when at resonance is :
A)
zero
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B)
0.5
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C)
1.0
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D)
Depends on values of L, C and R
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question_answer 33) For high frequency, capacitor offers :
A)
more resistance
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B)
less resistance
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C)
zero resistance
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D)
none of these
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question_answer 34) In an oscillating LC circuit the maximum charge on the capacitor is Q. The charge on the capacitor, when the energy is stored equally between the electric and magnetic field is :
A)
\[\frac{\theta }{2}\]
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B)
\[\frac{\theta }{\sqrt{2}}\]
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C)
\[\frac{\theta }{\sqrt{3}}\]
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D)
\[\frac{\theta }{3}\]
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question_answer 35) If \[{{\upsilon }_{g,}}{{\upsilon }_{x}}\]and \[{{\upsilon }_{m}}\] are the speeds of gamma rays X rays and micro waves respectively in vacuum then :
A)
\[{{\upsilon }_{g}}>{{\upsilon }_{m}}>{{\upsilon }_{x}}\]
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B)
\[{{\upsilon }_{g}}>{{\upsilon }_{x}}>{{\upsilon }_{m}}\]
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C)
\[{{\upsilon }_{g}}={{\upsilon }_{x}}={{\upsilon }_{m}}\]
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D)
none of these
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question_answer 36) A person standing in front of a mirror finds his image larger than himself. This implies that the mirror is :
A)
convex
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B)
parabolic
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C)
plane
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D)
convave
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question_answer 37) For a telescope, larger be diameter of the objective lens :
A)
greater the resolving power
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B)
smaller is the resolving power
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C)
greater is the magnifying power
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D)
smaller is the magnifying power
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question_answer 38) If the critical angle for total internal reflection from medium to vacuum is 30°, the velocity of light in medium is :
A)
\[3\times {{10}^{8}}m/s\]
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B)
\[1.5\times {{10}^{8}}m/s\]
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C)
\[6\times {{10}^{8}}m/s\]
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D)
\[\sqrt{3}\times {{10}^{8}}m/s\]
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question_answer 39) The deviation is maximum for which colour:
A)
Violet
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B)
Red
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C)
Blue
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D)
Green
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question_answer 40) In single slit diffraction pattern :
A)
central fringe has neglight width than others
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B)
all fringes are of same width
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C)
central frings does not exist
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D)
none of the above
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question_answer 41) The relation between amplification factor\[(\mu ),\] plate resistance\[({{r}_{p}}),\] and mutual conductance \[({{g}_{m}}),\]of a triode value is given by :
A)
\[\mu ={{r}_{p}}\times {{g}_{m}}\]
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B)
\[{{r}_{p}}=\mu \times {{g}_{m}}\]
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C)
\[{{g}_{m}}=\mu \times {{r}_{p}}\]
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D)
none of these
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question_answer 42) A light of wavelength 5000Å falls on a sensitive plate with photo electric work function 1.90 eV. Kinetic energy of the emitted photo electrons will be : Given, \[h=6.62\times {{10}^{-34}}\]Joule-second)
A)
0.1 eV
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B)
2 eV,
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C)
0.581 eV
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D)
1.581 eV
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question_answer 43) Continuous emission spectrum, the emitted wavelength range depends upon :
A)
temperature of the source
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B)
material of the source
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C)
surface area of the source
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D)
all of the above
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question_answer 44) The emission of electrons is possible by :
A)
photo electric effect
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B)
the mionic effect
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C)
both (a) and (b)
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D)
none of the above
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question_answer 45) An electron and a proton are possessing same amount of kinetic energies. The de-Broglie wavelength is greater for :
A)
electron
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B)
proton
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C)
both same
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D)
none of these
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question_answer 46) In a mean life of radiactive sample :
A)
about\[\frac{1}{3}\] of substance disintefrates
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B)
about \[\frac{3}{3}\]of the substance disintefrates
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C)
about 90% of the substance disintefrates
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D)
almost all the substance disintefrates
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question_answer 47) For the stability of any nucleus :
A)
binding energy per nucleon will be more
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B)
binding energy per nucleon will be less
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C)
no. of electrons will be more
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D)
none of these
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question_answer 48) H the half-life of any sample of radioactive substance is 4 days, then the fraction of sample will remain undecayed after 2 days, will be :
A)
\[\sqrt{2}\]
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B)
\[\frac{1}{\sqrt{2}}\]
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C)
\[\frac{\sqrt{2-1}}{\sqrt{2}}\]
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D)
\[\frac{1}{2}\]
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question_answer 49) On applying reverse bias to a junction diode, it:
A)
lowers the potential barrier
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B)
raises the potential barrier
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C)
increases the majority carrier current
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D)
increase the minority carrier current
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question_answer 50) An -type semiconductor is :
A)
negatively charged
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B)
positively charged
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C)
neutral
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D)
none of the above
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question_answer 51) \[n\] small metal drops of same size are charged to V volt each. If they coalesce to form a single large drop, then its potential will be:
A)
\[V/n\]
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B)
\[Vn\]
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C)
\[V{{n}^{1/3}}\]
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D)
\[V{{n}^{2/3}}\]
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question_answer 52) In an adiabatic process, the state of a gas is changed from\[{{P}_{1,}}{{V}_{1,}}{{R}_{1\,\,}}\]to\[{{P}_{2,}}{{V}_{2,}}{{R}_{2.\,\,}}\]which of the following relation is correct?
A)
\[{{T}_{1}}V\,{{_{1}^{\gamma }}^{-1}}={{T}_{2}}V\,{{_{2}^{\gamma }}^{-1}}\]
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B)
\[{{P}_{1}}V\,{{_{1}^{\gamma }}^{-1}}={{P}_{2}}V\,{{_{2}^{\gamma }}^{-1}}\]
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C)
\[{{T}_{1}}P\,_{1}^{\gamma }={{T}_{2}}P\,_{2}^{\gamma }\]
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D)
\[{{T}_{1}}V\,_{1}^{\gamma }={{T}_{2}}V\,_{2}^{\gamma }\]
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question_answer 53) Minimum and maximum values of Possion's ratio for a metal lies between:
A)
\[-\infty \,to\,+\,\infty \]
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B)
0 to 1
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C)
\[-\infty \,\]to 1
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D)
0 to 0.5
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question_answer 54) A wire of diameter 1 mm breaks under a tension of 1000 N. Another wire, of same material as that of the first one, but of diameter 2 mm breaks under a tension of :
A)
500 N
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B)
100 N
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C)
1000 N
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D)
4000 N
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question_answer 55) In a capillary tube experiment, a vertical, 30 cm long capillary tube is dipped in water. The water rises upto a height of 10 cm due to capillary action If this experiment is conducted in a freely falling elevator, the length of the water column becomes :
A)
10 cm
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B)
20 cm
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C)
30 cm
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D)
zero
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question_answer 56) An aeroplane gets its upward lift due to a phenomenon described by the :
A)
Archimedes principle
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B)
Bernoulli's principle
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C)
Buoyancy principle
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D)
Pascal law
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question_answer 57) A wooden block is taken to the bottom of a deep, calm lake of water and then released. It rises up with a :
A)
constant acceleration
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B)
decreasing acceleration
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C)
constant velocity
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D)
decreasing velocity
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question_answer 58)
A hollow conducting sphere is placed in an electric field produced by a point charge placed at P as shown in figure, Let \[{{V}_{A}}{{V}_{B,}}{{V}_{C}}\]potentials at points A, B and C respectively. Then
A)
\[{{V}_{C}}>{{V}_{B}}\]
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B)
\[{{V}_{B}}>{{V}_{C}}\]
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C)
\[{{V}_{A}}>{{V}_{B}}\]
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D)
\[{{V}_{A}}={{V}_{C}}\]
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question_answer 59) A parallel plate air capacitor is charged and then isolated. When a dielectric material is inserted between the plates of the capacitor, then which of the following does not change?
A)
Electric field between the plates
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B)
Potential difference across the plates
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C)
Charge on the plates
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D)
Energy stored in the capacitor
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question_answer 60) A spherical drop of mercury having a potential of 2.5 V is obtained as a result of merging 125 droplets. The potential of a constituent droplets would be:
A)
1.0 V
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B)
0.5 V
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C)
0.2 V
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D)
0.1 V
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question_answer 61) Essential compound to manufacture acrolin is:
A)
glycerol
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B)
benzene
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C)
phenol
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D)
ammonia
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question_answer 62) Hybridization present in\[CI{{F}_{3}}\]is:
A)
\[s{{p}^{2}}\]
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B)
\[s{{p}^{3}}\]
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C)
\[ds{{p}^{2}}\]
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D)
\[s{{p}^{3}}d\]
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question_answer 63) Oxidation number of sulphur in \[{{H}_{2}}{{S}_{2}}{{O}_{8}}\]is:
A)
+6
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B)
+8
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C)
+21
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D)
+7
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question_answer 64) Number of electrons surrounding Kr in \[Kr{{F}_{2}}\] is:
A)
10
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B)
6
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C)
4
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D)
8
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question_answer 65) Reason of passively of iron is:
A)
\[F{{e}_{2}}{{O}_{3}}\]
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B)
\[F{{e}_{3}}{{O}_{4}}\]
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C)
\[FeO\]
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D)
\[F{{e}_{2}}{{O}_{4}}3{{H}_{2}}O\]
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question_answer 66) Half-life of radioactive substance is 4 days. Amound of the substance decayed in two days is:
A)
\[\frac{1}{\sqrt{2}}\]
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B)
\[1-\frac{1}{\sqrt{2}}\]
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C)
\[20%\]
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D)
\[\frac{1}{8}\]
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question_answer 67) \[{{K}_{2}}Hg{{I}_{4}}\]is used to test the following:
A)
\[NH_{4}^{+}\]
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B)
\[Cl\]
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C)
\[Br\]
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D)
\[I\]
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question_answer 68) \[H-I-O\]bond angle in\[{{H}_{2}}{{O}_{2}}\]is:
A)
\[90{}^\circ \]
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B)
\[180{}^\circ \]
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C)
\[109.5{}^\circ \]
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D)
\[94.8{}^\circ \]
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question_answer 69) Iodine is tested by the following reagent
A)
starch
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B)
urea
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C)
glucose
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D)
glycerol
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question_answer 70) Half-life of a radioactive element is:
A)
0.693
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B)
\[\frac{1}{0.693}\]
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C)
\[\frac{0.693}{k}\]
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D)
\[\frac{k}{0.693}\]
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question_answer 71) Radioactive metal is:
A)
Li
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B)
Ce
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C)
Na
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D)
Ra
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question_answer 72) Which has smallest size?
A)
\[N{{a}^{+}}\]
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B)
\[M{{g}^{2+}}\]
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C)
\[Ne\]
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D)
\[{{O}^{2-}}\]
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question_answer 73) Phenol on reaction with Br; gives:
A)
\[o-\] Bromo phenol
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B)
\[p-\]Bromo phenol
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C)
2, 4, 6 tribromo phenol
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D)
1, 3, 5 tribromo benzene
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question_answer 74) Electron deficient molecule is:
A)
\[CC{{l}_{4}}\]
done
clear
B)
\[PC{{l}_{5}}\]
done
clear
C)
\[B{{F}_{3}}\]
done
clear
D)
\[S{{F}_{6}}\]
done
clear
View Answer play_arrow
question_answer 75) Which is the correct relation for diffusion of gases:
A)
\[r\propto s\]
done
clear
B)
\[r\propto \sqrt{d}\]
done
clear
C)
\[r\propto \frac{1}{\sqrt{d}}\]
done
clear
D)
none of these
done
clear
View Answer play_arrow
question_answer 76) Aniline with\[CHC{{l}_{3}}\]and KOH on heating \[CHC{{l}_{3}}\]gives:
A)
isocyanide
done
clear
B)
cyanide
done
clear
C)
phenol
done
clear
D)
salicylic acid
done
clear
View Answer play_arrow
question_answer 77) Geometrical isomerism is found in:
A)
pentene-1
done
clear
B)
pentane
done
clear
C)
2-butene
done
clear
D)
butene-1
done
clear
View Answer play_arrow
question_answer 78) Most acidic is:
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
question_answer 79) Hydrolysis of sodium acetate gives:
A)
acidic solution
done
clear
B)
basic solution
done
clear
C)
amphoteric solution
done
clear
D)
neutral solution
done
clear
View Answer play_arrow
question_answer 80) Isotopic pair is:
A)
\[_{20}{{X}^{40}}{{,}_{21}}{{X}^{40}}\]
done
clear
B)
\[_{20}{{X}^{40}}{{,}_{20}}{{X}^{41}}\]
done
clear
C)
\[_{20}{{X}^{20}}{{,}_{41}}{{X}^{20}}\]
done
clear
D)
None
done
clear
View Answer play_arrow
question_answer 81) \[Z\xrightarrow[{}]{PCl}X\xrightarrow[{}]{alc\,KOH}Y\xrightarrow[{}]{conc\,{{H}_{2}}S{{O}_{4}}}Z\]Here Z is:
A)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\]
done
clear
B)
\[{{(C{{H}_{3}})}_{2}}-C-OH\]
done
clear
C)
\[C{{H}_{3}}-CH-C{{H}_{3}}\]
done
clear
D)
none of above
done
clear
View Answer play_arrow
question_answer 82) Fuel used in nuclear reactor is:
A)
plutonium
done
clear
B)
thorium
done
clear
C)
radium
done
clear
D)
deuterium
done
clear
View Answer play_arrow
question_answer 83) Atomic number of an element is equal to the number of:
A)
protons
done
clear
B)
neutrons
done
clear
C)
electrons
done
clear
D)
protons + neutrons
done
clear
View Answer play_arrow
question_answer 84) Following pair is separated by yellow ammonium sulphide:
A)
\[CdS,B{{i}_{2}}Si\]
done
clear
B)
\[B{{i}_{2}}{{S}_{3}},PbS\]
done
clear
C)
\[PbS,\text{ }HgS\]
done
clear
D)
\[CDS,\text{ }A{{g}_{2}}{{S}_{3}}\]
done
clear
View Answer play_arrow
question_answer 85) Cationic hydrolysis gives the following solution:
A)
acidic
done
clear
B)
basic
done
clear
C)
neutral
done
clear
D)
amphoteric
done
clear
View Answer play_arrow
question_answer 86) Which gives nucleophilic addition most easily:
A)
\[C{{H}_{3}}CHO\]
done
clear
B)
\[C{{H}_{3}}C{{H}_{2}}CHO\]
done
clear
C)
\[C{{H}_{3}}\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,CHO\]
done
clear
D)
\[HCHO\]
done
clear
View Answer play_arrow
question_answer 87) Compound reacting with alkaline\[KMn{{O}_{4}}\]:
A)
\[C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix} OH \\ | \end{smallmatrix}}{\mathop{C}}}\,-C{{H}_{3}}\]
done
clear
B)
\[C{{H}_{3}}-\overset{\begin{smallmatrix} OH \\ | \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}\]
done
clear
C)
\[{{(C{{H}_{3}})}_{3}}-C-C{{H}_{2}}OH\]
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 88) Lucas reagent reacts fastest with:
A)
butanol-1
done
clear
B)
butanol-2
done
clear
C)
2-mefhyl-propanol-2
done
clear
D)
2-methyl-propanol-1
done
clear
View Answer play_arrow
question_answer 89) Reagent used to extract silver from\[A{{g}_{2}}S\]is:
A)
\[NaCN\]
done
clear
B)
\[NaCN\]in presence of\[{{O}_{2}}\]
done
clear
C)
\[NaCl\]
done
clear
D)
\[AgN{{O}_{3}}\]
done
clear
View Answer play_arrow
question_answer 90) Number of moles of\[{{K}_{2}}C{{r}_{2}}{{O}_{2}}\]reduced by one mole of\[S{{n}^{2+}}\]:
A)
\[\frac{1}{3}\]
done
clear
B)
3
done
clear
C)
\[\frac{1}{6}\]
done
clear
D)
6
done
clear
View Answer play_arrow
question_answer 91) \[S{{N}^{2}}\]mechanism is involed in the following substitution:
A)
\[C{{H}_{1}}-C{{H}_{2}}-Cl+O{{H}^{-}}\]
done
clear
B)
\[C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\overset{\begin{smallmatrix} Cl \\ | \end{smallmatrix}}{\mathop{C}}}\,-C{{H}_{3}}-O{{H}^{-}}\]
done
clear
C)
\[C{{H}_{3}}-\overset{\begin{smallmatrix} Cl \\ | \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}+O{{H}^{-}}\]
done
clear
D)
\[C{{H}_{3}}-C{{H}_{2}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix} Cl \\ | \end{smallmatrix}}{\mathop{C}}}\,-C{{H}_{3}}+O{{H}^{-}}\]
done
clear
View Answer play_arrow
question_answer 92) Radioactive isotope of hydrogen is:
A)
Uranium
done
clear
B)
Deuterium
done
clear
C)
Tritium
done
clear
D)
None
done
clear
View Answer play_arrow
question_answer 93) Electronic configuration of hydride ion is:
A)
\[1\,{{s}^{0}}\]
done
clear
B)
\[1\,{{s}^{1}}\]
done
clear
C)
\[1\,{{s}^{2}}\]
done
clear
D)
\[1{{s}^{1}}\,2{{s}^{1}}\]
done
clear
View Answer play_arrow
question_answer 94) Suitable condition for melting of ice:
A)
high temp. and high pressure
done
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B)
high temp. and low pressure
done
clear
C)
low temp. and low pressure
done
clear
D)
low temp. high pressure
done
clear
View Answer play_arrow
question_answer 95) Least ionised salt is:
A)
\[KCl\]
done
clear
B)
\[AgCl\]
done
clear
C)
\[MgC{{l}_{2}}\]
done
clear
D)
\[CaC{{l}_{2}}\]
done
clear
View Answer play_arrow
question_answer 96) Difference in the melting and boiling points of inert gases is:
A)
large
done
clear
B)
small
done
clear
C)
no difference
done
clear
D)
any of these
done
clear
View Answer play_arrow
question_answer 97) Essential component of amalgam is:
A)
Fe
done
clear
B)
\[Pb\]
done
clear
C)
Hg
done
clear
D)
Cr
done
clear
View Answer play_arrow
question_answer 98) Following is estimated by Liebig method:
A)
C and H
done
clear
B)
\[{{N}_{2}}\]
done
clear
C)
\[C{{l}_{2}}\]
done
clear
D)
\[B{{r}_{2}}\]
done
clear
View Answer play_arrow
question_answer 99) Inorganic graphite is:
A)
BN
done
clear
B)
\[B{{F}_{3}}\]
done
clear
C)
\[{{B}_{2}}{{H}_{6}}\]
done
clear
D)
none of these
done
clear
View Answer play_arrow
question_answer 100) Nausadar is:
A)
\[N{{H}_{1}}N{{O}_{3}}\]
done
clear
B)
\[N{{H}_{4}}Cl\]
done
clear
C)
\[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\]
done
clear
D)
\[N{{H}_{4}}OH\]
done
clear
View Answer play_arrow
question_answer 101) Number of unpaired electrons in\[{{O}_{2}}\]molecule is:
A)
zero
done
clear
B)
one
done
clear
C)
two
done
clear
D)
four
done
clear
View Answer play_arrow
question_answer 102) Anode in the galvanic cell is:
A)
negative electrode
done
clear
B)
positive electrons
done
clear
C)
neutral electrode
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 103) Normal solution is:
A)
inert solution
done
clear
B)
acidic solution
done
clear
C)
one litre containing one equivalent
done
clear
D)
basic solution
done
clear
View Answer play_arrow
question_answer 104) In exothermic reaction heat is:
A)
given out
done
clear
B)
absorbed
done
clear
C)
not involved
done
clear
D)
given out or absorbed
done
clear
View Answer play_arrow
question_answer 105) Element having maximum electron affinity is:
A)
\[{{F}_{2}}\]
done
clear
B)
\[C{{l}_{2}}\]
done
clear
C)
\[B{{r}_{2}}\]
done
clear
D)
\[{{I}_{2}}\]
done
clear
View Answer play_arrow
question_answer 106) Bond order in benzene is:
A)
1
done
clear
B)
2
done
clear
C)
1.5
done
clear
D)
none of these
done
clear
View Answer play_arrow
question_answer 107) Phenol and benzoic acid may be distinguished by:
A)
\[NaHC{{O}_{3}}\]
done
clear
B)
\[NaOH\]
done
clear
C)
\[Na\]
done
clear
D)
\[PC{{l}_{5}}\]
done
clear
View Answer play_arrow
question_answer 108) Correct order of basic nature is:
A)
\[N{{H}_{3}}>C{{H}_{3}}N{{H}_{2}}>{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]
done
clear
B)
\[{{C}_{6}}{{H}_{5}}N{{H}_{2}}>N{{H}_{3}}>C{{H}_{3}}N{{H}_{2}}\]
done
clear
C)
\[C{{H}_{3}}N{{H}_{2}}>N{{h}_{3}}>{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 109) Element having maximum ionization energy:
A)
Na
done
clear
B)
Li
done
clear
C)
K
done
clear
D)
Rb
done
clear
View Answer play_arrow
question_answer 110) \[HCHO\]reacts with\[N{{H}_{3}}\]to give:
A)
urotropine
done
clear
B)
bakelite
done
clear
C)
teryline
done
clear
D)
gylaptal
done
clear
View Answer play_arrow
question_answer 111) The magnetic moment of\[{{K}_{3}}[Fe{{(CN)}_{6}}]\]is found to be 1.7 BM. How many unpaired electron (s) is/are present per molecule?
A)
1
done
clear
B)
2
done
clear
C)
3
done
clear
D)
4
done
clear
View Answer play_arrow
question_answer 112) Which among the following is an electron deficient compound?
A)
\[N{{F}_{3}}\]
done
clear
B)
\[P{{F}_{3}}\]
done
clear
C)
\[B{{F}_{3}}\]
done
clear
D)
\[As{{F}_{3}}\]
done
clear
View Answer play_arrow
question_answer 113) Arrange the hydra-acids of halogens in increasing order of acidity.
A)
\[HF<HCl<HBr<HI\]
done
clear
B)
\[HI<HBr<HCl<HF\]
done
clear
C)
\[HF<HBr<HI<HCl\]
done
clear
D)
\[HF<HI<HBr<HCl\]
done
clear
View Answer play_arrow
question_answer 114) What is the product of the reaction of\[{{H}_{2}}{{O}_{2}}\]with\[C{{l}_{2}}\]?
A)
\[{{O}_{2}}+HOCl\]
done
clear
B)
\[HCl+{{O}_{2}}\]
done
clear
C)
\[{{H}_{2}}O+HCl\]
done
clear
D)
\[HCl+{{H}_{2}}\]
done
clear
View Answer play_arrow
question_answer 115) Which of the following organo-silicon compound on hydrolysis will give a three dimensional silicone?
A)
\[{{R}_{3}}SiCl\]
done
clear
B)
\[RSiC{{l}_{3}}\]
done
clear
C)
\[SiC{{l}_{4}}\]
done
clear
D)
\[{{R}_{2}}SiC{{l}_{2}}\]
done
clear
View Answer play_arrow
question_answer 116) \[NaOCl\] is used as a bleaching agent and sterilising agent. It can be synthesized by the action of:
A)
\[NaCl\]with\[{{H}_{2\,}}O\]
done
clear
B)
\[N{{H}_{4}}Cl\]with\[NaOH\]
done
clear
C)
\[C{{l}_{2}}\]with cold and dilute\[NaOH\]
done
clear
D)
\[C{{l}_{2}}\]with hot and concentrated\[NaOH\]
done
clear
View Answer play_arrow
question_answer 117) How can you synthesize nitric oxide in the laboratory?
A)
Zinc with cold and dilute\[HN{{O}_{3}}\]
done
clear
B)
Zinc with concentrated\[HN{{O}_{3}}\]
done
clear
C)
Copper with cold and dilute\[HN{{O}_{3}}\]
done
clear
D)
Heating\[N{{H}_{4}}N{{O}_{3}}\]
done
clear
View Answer play_arrow
question_answer 118) Which of the following does not have a lone pair on the central atom?
A)
\[N{{H}_{3}}\]
done
clear
B)
\[P{{H}_{3}}\]
done
clear
C)
\[B{{F}_{3}}\]
done
clear
D)
\[PC{{l}_{3}}\]
done
clear
View Answer play_arrow
question_answer 119) Which colourless gas evolves when\[N{{H}_{4}}Cl\]reacts with zinc in a dry cell battery?
A)
\[N{{H}_{3}}\]
done
clear
B)
\[{{N}_{2}}\]
done
clear
C)
\[{{H}_{2}}\]
done
clear
D)
\[C{{l}_{2}}\]
done
clear
View Answer play_arrow
question_answer 120) What is the nature of the bond between B and O in\[{{({{C}_{2}}{{H}_{5}})}_{2}}OB{{H}_{3}}\]?
A)
Covalent
done
clear
B)
Co-ordinate covalent
done
clear
C)
Ionic bond
done
clear
D)
Banana shaped bond
done
clear
View Answer play_arrow
question_answer 121) Trochophore is the larva of:
A)
Neopilina
done
clear
B)
Chiton
done
clear
C)
Pila
done
clear
D)
all of these
done
clear
View Answer play_arrow
question_answer 122) Food storage in Leucosolenia occur by :
A)
ostia
done
clear
B)
osculum
done
clear
C)
thesocytc
done
clear
D)
spongocoel
done
clear
View Answer play_arrow
question_answer 123) Organs which differ in origin but perform similar functions :
A)
analogous
done
clear
B)
homologous
done
clear
C)
vestigial
done
clear
D)
any of above
done
clear
View Answer play_arrow
question_answer 124) Blood leaving liver and going towards heart is rich in :
A)
bile
done
clear
B)
urea
done
clear
C)
ammonia
done
clear
D)
oxygen
done
clear
View Answer play_arrow
question_answer 125) Sequence of DNA (Non-coding) is known as :
A)
exon
done
clear
B)
intron
done
clear
C)
cistron
done
clear
D)
none
done
clear
View Answer play_arrow
question_answer 126) How many sperms are formed by four primary spermatocyte:
A)
1
done
clear
B)
4
done
clear
C)
16
done
clear
D)
32
done
clear
View Answer play_arrow
question_answer 127) 'Digestion' word means :
A)
buring of food
done
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B)
oxidation of food
done
clear
C)
hydrolysis of food
done
clear
D)
break down of food
done
clear
View Answer play_arrow
question_answer 128) Maximum absorption of water occurs in:
A)
colon
done
clear
B)
rectum
done
clear
C)
large intestine
done
clear
D)
small intestine
done
clear
View Answer play_arrow
question_answer 129) Set which includes only analogous organts is:
A)
wings of butterfly, housefly and bat
done
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B)
hindlegs of horse grasshopper and bat
done
clear
C)
wings of btterfly and Wingspread fo bat and birds
done
clear
D)
mandibles of cockrach, mosquito and honey bee.
done
clear
View Answer play_arrow
question_answer 130) Convergent Evolution' is shown by :
A)
homologous organs
done
clear
B)
analogous organs
done
clear
C)
vestigial organs
done
clear
D)
above three
done
clear
View Answer play_arrow
question_answer 131) Chloragogen cells of earthworms are analogous to vertebrate :
A)
lungs
done
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B)
liver
done
clear
C)
gut
done
clear
D)
kidneys
done
clear
View Answer play_arrow
question_answer 132) Class Crustacea differ from Insecta in having ;
A)
two pairs of antennae
done
clear
B)
jointed foot
done
clear
C)
chitinous cuticle
done
clear
D)
none of these
done
clear
View Answer play_arrow
question_answer 133) In DNA, which is absent :
A)
Adenine
done
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B)
Thymine
done
clear
C)
Guanine
done
clear
D)
Uracil
done
clear
View Answer play_arrow
question_answer 134) Neural canal is present in :
A)
humerus
done
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B)
tibio-fibula
done
clear
C)
vertebral column
done
clear
D)
cranial bones
done
clear
View Answer play_arrow
question_answer 135) Sigmoid notch is formed by :
A)
cavity formed by humerus
done
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B)
cavity formed by radio ulna
done
clear
C)
cavity formed by tibio fibula
done
clear
D)
cavity formed by femur
done
clear
View Answer play_arrow
question_answer 136) Lymphocytes are formed by :
A)
plasma cells
done
clear
B)
mast cells
done
clear
C)
liver cells
done
clear
D)
none of these
done
clear
View Answer play_arrow
question_answer 137) On high mountains, difficulty in breathing is due to :
A)
decrease in partial pressure of \[{{O}_{2}}\]
done
clear
B)
decrease in amount of \[{{O}_{2}}\]
done
clear
C)
increase in \[C{{O}_{2}}\] conc
done
clear
D)
all of the above
done
clear
View Answer play_arrow
question_answer 138) Which of the following character is presence essentially in chordates?
A)
Ventral spinal chord
done
clear
B)
Dorsal heart
done
clear
C)
Pharyngeal gill slits
done
clear
D)
Blood flow in forward direction in ventral blood vessels
done
clear
View Answer play_arrow
question_answer 139) If drosal nerve of spinal cord is broken down then its effect is :
A)
no impulse is transmitted
done
clear
B)
impulse is transmitted but slowly
done
clear
C)
impulse is trasmitted fast
done
clear
D)
no effect on impulse
done
clear
View Answer play_arrow
question_answer 140) Striped muscles are characterised by :
A)
syncytial
done
clear
B)
spindle shape
done
clear
C)
uninucleate
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 141) Bowman's capsule is found in :
A)
glomerulus
done
clear
B)
uriniferous tubule
done
clear
C)
nephron
done
clear
D)
malpighian capsule
done
clear
View Answer play_arrow
question_answer 142) Which of the following hormone stimulates the gastric secretion ?
A)
Enterogastrone
done
clear
B)
Gastrin
done
clear
C)
CCK-PZ
done
clear
D)
Villiknin
done
clear
View Answer play_arrow
question_answer 143) Example of Analogous organs is :
A)
wings of bird and insect
done
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B)
forelimbs of horse and man
done
clear
C)
teeth of elephant and man
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 144) During staravation what will be sequence of ending of food stuffs?
A)
Carbohydrate - Fat - Protein
done
clear
B)
Carbohydrate - Protein - Fat
done
clear
C)
Fat - Protein - Carbohydrate
done
clear
D)
Fat - Carbohydrate - Protein
done
clear
View Answer play_arrow
question_answer 145) Number of cranial nerves in frog :
A)
10 pairs
done
clear
B)
9 pairs
done
clear
C)
12 pairs
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 146) How many ATP are formed by oxidation of one glucose molecular in liver cells?
A)
36
done
clear
B)
38
done
clear
C)
2
done
clear
D)
8
done
clear
View Answer play_arrow
question_answer 147) A haemophilic woman marries a normal man then :
A)
all the children will be normal
done
clear
B)
all the sons will be haemophilic
done
clear
C)
all the girls will be haemophilic
done
clear
D)
half girls will be haemophilic
done
clear
View Answer play_arrow
question_answer 148) Husband has blood group A and wife has blood group B. What is the blood group of children?
A)
A
done
clear
B)
B
done
clear
C)
AB
done
clear
D)
All A, B, AB or O
done
clear
View Answer play_arrow
question_answer 149) Which insect is useful for us?
A)
Periplaneta
done
clear
B)
Musca
done
clear
C)
Bombyx
done
clear
D)
Mosquitoes
done
clear
View Answer play_arrow
question_answer 150) Which is called soluble FUMA?
A)
r- WA
done
clear
B)
t ?RNA
done
clear
C)
m-RNA
done
clear
D)
hn-RNA
done
clear
View Answer play_arrow
question_answer 151) Which cell organelle is covered by only one unit membrane?
A)
Nucleus
done
clear
B)
Plastids
done
clear
C)
Mitochondria
done
clear
D)
Lysosome
done
clear
View Answer play_arrow
question_answer 152) The s-phase of cell cycle is characterized by:
A)
duplication of chromosome
done
clear
B)
shotening of chromosome
done
clear
C)
duplication of DNA
done
clear
D)
duplicatin of centriole
done
clear
View Answer play_arrow
question_answer 153) Quiscent centre is present in :
A)
root apex
done
clear
B)
shoot apex
done
clear
C)
parenchyma
done
clear
D)
collenchyma as
done
clear
View Answer play_arrow
question_answer 154) e -DNA is formed from m-RNA by which enzyme:
A)
restriction endonuclease
done
clear
B)
reverse transcriptase
done
clear
C)
DNA polymerase
done
clear
D)
RNA polymerase
done
clear
View Answer play_arrow
question_answer 155) Mutation is more common when it is present in:
A)
dominant condition
done
clear
B)
recessive condition
done
clear
C)
constant in population
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 156) In DNA, which is absent ?
A)
Adenine
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B)
Guanine
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C)
Uracil
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D)
Cytosine
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question_answer 157) Cell membrane is made up of :
A)
protein
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B)
cellulose
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C)
lipids,
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D)
lipids carbohydrates and protein
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question_answer 158) Living in same habitat organisms of same species from :
A)
biosphere
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B)
community
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C)
population
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D)
niche
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question_answer 159) Which of the following constitute about 10-20% of total circular RNA?
A)
m-RNA
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B)
r -RNA
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C)
t -RNA
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D)
hn -RNA
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question_answer 160) Jumping genes in maize were discovered by:
A)
Hugo de Vries
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B)
T.H. Morgan
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C)
Barbara McClintock
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D)
Mendel
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question_answer 161) Innitiation codon is:
A)
AUG
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B)
UUU
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C)
UAG
done
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D)
AAG
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question_answer 162) Which statement is incorrect?
A)
Plant viruses contain RNA
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B)
Animal viruses contain DNA
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C)
\[{{T}_{4}}\]contains double strand DNA
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D)
TMV contains double stranded RNA
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question_answer 163) Pollination occuring from one flower to another of same plant is :
A)
autogamy
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B)
allogamy
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C)
geitenogamy
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D)
none of these
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question_answer 164) Aleuron layer is found in :
A)
embryo
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B)
nuceltus
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C)
endosperm
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D)
endodermis
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question_answer 165) Core of chlorophyll is formed by :
A)
Fe
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B)
Mn
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C)
\[C{{H}_{3}}\]
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D)
Mg
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question_answer 166) By anaerobic process, the cow dung is used to produce :
A)
methane
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B)
butane
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C)
ethane
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D)
propane By anaerobic process, the cow dung is used to produce biogas. Biogas is a mixture of methane \[(C{{H}_{4}})\]and carbon dioxide \[(C{{O}_{2}}).\]
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question_answer 167) 'Heterosis' is related to :
A)
cloning
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B)
selection
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C)
hybridization
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D)
introduction
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question_answer 168) Phytotron is :
A)
a controlled condition chamber for tissue
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B)
leaf culture process
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C)
special culture of plants
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D)
root culture process
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question_answer 169) Fruits are formed in :
A)
Brassica
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B)
Fern
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C)
Cycas
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D)
Funaria
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question_answer 170) \[C{{O}_{2}}\]acceptor in CAM plants is in :
A)
mesophyll cells
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B)
bundle sheath
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C)
both
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D)
none of the above
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question_answer 171) If centromere is the middle, the chromosome is called :
A)
sub-metacentric
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B)
metacentric
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C)
acentric
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D)
telocentric
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question_answer 172) Which hormone is responsible for mobilization of storage food during seed germination?
A)
Auxin
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B)
Gibberellin
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C)
Cytokinin
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D)
Ethylene
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question_answer 173) P-proteins belong to :
A)
xylem parenchyma
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B)
trichomes
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C)
sieve tube elements
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D)
tracheids and vessels
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question_answer 174) The wall of bacteria is consists of :
A)
N-acetyl glucosamine
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B)
N-acetyl muramic acid
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C)
both and
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D)
cellulose
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question_answer 175) Which enzyme is most specific ?
A)
Trypsin
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B)
Pepsin
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C)
Sucrase
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D)
Nuclease
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question_answer 176) The organelles, those take part in photorespiration are :
A)
chloroplast and mitochondria
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B)
cloroplast, mitochondria and peroxisome
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C)
mitochondria and peroxisome
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D)
mitochondria only
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question_answer 177) Pneumatophores are meant for :
A)
respiration
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B)
anchorage
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C)
protection
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D)
nutrition
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question_answer 178) Non-coding sequences of DNA are :
A)
exon
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B)
intron
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C)
rhizoids
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D)
cistron
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question_answer 179) Mosses are attached to substratum by :
A)
roots
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B)
capsule
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C)
rhizoids
done
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D)
cistron
done
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question_answer 180) Mark the correct sequence of layers found in root anatomy :
A)
Epiblema, cortex, endodermis, pericycle
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B)
Cortex, epiblema, pericycle, endodermis
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C)
Epiblema, cortex, pericycle, endodermis
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D)
Cortex, epiblema, endodermis, epidermis
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