question_answer 1) \[3.0\text{ }mW\]of 400 nm light is incident on a photoelectric cell, if 0.1% of the photons are contributing in ejection of electrons, then the current in the cell is
A)
\[0.48\text{ }\mu A\]
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B)
resistance value not given
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C)
zero
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D)
\[0.96\text{ }\mu A\]
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question_answer 2) What is the effect of increasing the intensity of light that falls on the emitter in a photoelectric effect apparatus?
A)
Cut-off frequency decreases
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B)
Stopping potential decreases
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C)
Time delay for emission of photoelectron decreases
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D)
Saturation photocurrent increases
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question_answer 3) The ratio of the acceleration due to gravity at the bottom of a deep mine and that on the surface of the earth is 978/980. Find the depth of the mine if the density of the earth is uniform through and the radius of the earth is 6300 km
A)
12.86km
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B)
13.0km
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C)
25.38km
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D)
90.9km
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question_answer 4) A body falls from rest. In the last second of its fall it covers half of the total distance. If g is \[9.8\text{ }m/{{s}^{2}},\]then the total time of its falls is (in second)
A)
2
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B)
\[2+\sqrt{2}\]
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C)
\[4-\sqrt{2}\]
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D)
3
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question_answer 5) A pressure of\[x\]dyne\[c{{m}^{-2}}\]is equivalent to
A)
\[\left( \frac{x}{10} \right)N{{m}^{-2}}\]
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B)
\[\left( \frac{x}{100} \right)N{{m}^{-2}}\]
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C)
\[10x\,N{{m}^{-2}}\]
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D)
\[\left( \frac{x}{{{10}^{4}}} \right)\,N{{m}^{-2}}\]
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question_answer 6)
As shown in figure a uniform solid sphere rolls on a horizontal surface at 20 m/s. If then rolls up the incline shown. What will be the value of h, where the ball stops?
A)
28.6m
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B)
8.6m
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C)
6m
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D)
18.6m
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question_answer 7) A racing car moving towards a cliff sounds its horn. The driver observes that the sound reflected from the cliff has a pitch one octave higher than the actual sound of the horn. If v is the velocity of sound, the velocity of the car is
A)
\[\frac{v}{\sqrt{2}}\]
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B)
\[\frac{v}{2}\]
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C)
\[\frac{v}{3}\]
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D)
\[\frac{v}{4}\]
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question_answer 8) A ball falls vertically on to a floor, with momentum p and then bounces repeatedly, the coefficient of restitution is e. The total momentum imparted by the ball to the floor is
A)
\[p(1+e)\]
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B)
\[\frac{p}{1-e}\]
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C)
\[p\left( \frac{1+e}{1-e} \right)\]
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D)
\[p\left( 1-\frac{1}{e} \right)\]
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question_answer 9) A car accelerates from rest at a constant rate a for some time after which it decelerates at a constant rate p to come to rest. If the total time elapsed is t, the distance travelled by the car is
A)
\[\frac{1}{2}\left( \frac{\alpha \beta }{\alpha +\beta } \right){{t}^{2}}\]
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B)
\[\frac{1}{2}\left( \frac{\alpha +\beta }{\alpha \beta } \right){{t}^{2}}\]
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C)
\[\frac{1}{2}\left( \frac{{{\alpha }^{2}}+{{\beta }^{2}}}{\alpha \beta } \right){{t}^{2}}\]
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D)
\[\frac{1}{2}\left( \frac{{{\alpha }^{2}}-{{\beta }^{2}}}{\alpha \beta } \right){{t}^{2}}\]
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question_answer 10) A ball is thrown from a point with a speed\[{{v}_{0}}\]at an angle of projection\[\theta \]. From the same point and the same instant, a person starts running with constant speed\[\frac{{{v}_{0}}}{2}\]to catch the ball will the person be able to catch the ball? If yes, what should be the angle of projection?
A)
Yes, \[60{}^\circ \]
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B)
Yes, \[30{}^\circ \]
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C)
No
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D)
Yes,\[45{}^\circ \]
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question_answer 11) A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a place, it follows that
A)
its velocity is constant
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B)
its acceleration is constant
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C)
its kinetic energy is constant
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D)
its moves in a straight line
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question_answer 12) A wooden block of mass M resting on a rough horizontal surface is pulled with a force F at an angle with the horizontal. If\[\mu \]is the coefficient of kinetic friction between the block and the surface, then acceleration of the block is
A)
\[\frac{F}{M}(\cos \phi +\mu \sin \phi )-\mu g\]
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B)
\[F\sin \frac{\phi }{M}\]
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C)
\[\mu F\cos \phi \]
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D)
\[\mu Fsin\,\phi \]
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question_answer 13) The particle is released from a height h. At a certain height, its KE is two times that of potential energy. Height and speed of the particle at that instant are
A)
\[\frac{h}{3},\sqrt{\frac{2gh}{3}}\]
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B)
\[\frac{h}{3},2\sqrt{\frac{gh}{3}}\]
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C)
\[\frac{2h}{3},\sqrt{\frac{2gh}{3}}\]
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D)
\[\frac{h}{3},\sqrt{2gh}\]
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question_answer 14) The time period of a satellite of earth is 5 h. If the separation between the earth and the satellite is increased to 4 times the previous value, the new time period will become
A)
10 h
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B)
80 h
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C)
40 h
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D)
20 h
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question_answer 15) A disk starts rotating from rest about its axis with an angular acceleration equal to\[a=10\] \[rad/{{s}^{2}}\]where t is time in second. At\[t=0\]disk is at rest. The time taken by disk to make its first complete revolution is
A)
\[{{\left( \frac{6\pi }{5} \right)}^{1/3}}\]
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B)
\[{{\left( \frac{3\pi }{10} \right)}^{1/3}}\]
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C)
\[{{\left( \frac{2\pi }{5} \right)}^{1/2}}\]
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D)
\[{{\left( \frac{6\pi }{13} \right)}^{1/3}}\]
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question_answer 16) A steel ball is dropped in oil, then
A)
the ball attains constant velocity after same time
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B)
the ball stops
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C)
the speed of ball will keep on increasing
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D)
None of the above
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question_answer 17) The pressure inside a tyre is 4 arm at\[27{}^\circ C\]. If the tyre burst suddenly, new temperature will be
A)
300 (4)772
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B)
300 (4)277
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C)
300 (2)772
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D)
300 (4)-277
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question_answer 18) Compute the number of moles and in 1.00 \[c{{m}^{2}}\]of an ideal gas at a pressure of 100 Pa and a temperature of 220 K
A)
\[3.35\times {{10}^{-8}}mol\]
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B)
\[4.57\times {{10}^{-7}}mol\]
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C)
\[5.47\times {{10}^{-8}}mol\]
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D)
\[2.75\times {{10}^{-8}}mol\]
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question_answer 19) A parallel plate condenser with a dielectric of dielectric constant K between the plates has a capacity C and is charged to a potential V volt. The dielectric slab is slowly removed from between the plates and then reinserted. The net work done by the system in this process is
A)
\[\frac{1}{2}(K-1)C{{V}^{2}}\]
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B)
\[C{{V}^{2}}=\frac{(K-1)}{K}\]
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C)
\[(K-1)C{{V}^{2}}\]
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D)
zero
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question_answer 20) A potential of 500 V is observed near the surface C with \[V=0\] at infinity. If two such drops of the same charge and radius combine to form a single spherical drop, the potential at the surface at the new drop?
A)
590V
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B)
690V
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C)
790V
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D)
890V
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question_answer 21) A ball rolls off the stairway with a horizontal velocity of magnitude 1.8 m/s. The steps are 0.20 m high and 0.20 m wide. Which step will the ball hit first?
A)
First
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B)
Second
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C)
Third
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D)
Fourth
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question_answer 22) A point P lies on the axis of a ring of mass M and radius R at a distance 2R from its centre O. A small particle starts from P and reaches Q under gravitational attraction only. Its speed of at O will be
A)
Zero
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B)
\[\sqrt{\frac{2GM}{R}}\]
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C)
\[\sqrt{\frac{2GM}{R}(\sqrt{5}-1)}\]
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D)
\[\sqrt{\frac{2GM}{R}\left( 1-\frac{1}{\sqrt{5}} \right)}\]
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question_answer 23) If gas molecules undergo in elastic collision with the walls of the container, then
A)
temperature of the gas will increase
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B)
temperature of the gas will fall
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C)
pressure of the gas will increase
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D)
neither the temperature nor the pressure will change
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question_answer 24) Magnetic field at the centre of a circular loop of area A is B. The magnetic moment of the loop will be
A)
\[\frac{B{{A}^{2}}}{{{\mu }_{0}}\pi }\]
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B)
\[\frac{B{{A}^{3/2}}}{{{\mu }_{0}}\pi }\]
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C)
\[\frac{B{{A}^{3/2}}}{{{\mu }_{0}}{{\pi }^{1/2}}}\]
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D)
\[\frac{2B{{A}^{3/2}}}{{{\mu }_{0}}{{\pi }^{1/2}}}\]
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question_answer 25)
A particle is moving in a circle of radius r with constant speed v. The change in velocity of particle while moving from A to B\[(<AOB=50{}^\circ )\]is
A)
\[2v\text{ }cos\text{ }50{}^\circ \]
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B)
\[2v\text{ }sin\text{ }50{}^\circ \]
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C)
\[2v\text{ }cos25{}^\circ \]
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D)
\[2v\,\sin \,25{}^\circ \]
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question_answer 26) A 24 kg block resting on a floor has a rope secured to its top. The maximum tension the rope can withstand without breaking is 310 N. The minimum time in which the block can be lifted a vertical distance of 4.6 m by pulling on the rope is
A)
1.2s
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B)
1.3s
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C)
1.7 s
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D)
2.3 s
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question_answer 27) The upper end of a wire 1 m long and 2 mm radius is clamped. The lower end is twisted through an angle of\[45{}^\circ \]. The angle of shear is
A)
\[0.09{}^\circ \]
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B)
\[0.9{}^\circ \]
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C)
\[9{}^\circ \]
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D)
\[90{}^\circ \]
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question_answer 28) Two plano-convex lenses of radius of curvature R and refractive index\[\mu =1.5\]will have equivalent focal length equal to R when they are placed
A)
at distance \[\frac{R}{4}\]
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B)
at distance \[\frac{R}{2}\]
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C)
at distance R
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D)
in contact with each other
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question_answer 29) A point moves in a straight line so that its displacement \[x\](metre) in time t (second) is given by\[{{x}^{2}}={{t}^{2}}+1\]. Its acceleration in m/s , is
A)
\[\frac{1}{x}-\frac{1}{{{x}^{2}}}\]
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B)
\[-\frac{t}{{{x}^{2}}}\]
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C)
\[-\frac{{{t}^{2}}}{{{x}^{3}}}\]
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D)
\[\frac{1}{{{x}^{3}}}\]
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question_answer 30) The threshold wavelength for a photo-sensitive surface is \[6000\,\overset{\text{o}}{\mathop{\text{A}}}\,\] and the wavelength of incident light is \[5000\,\overset{\text{o}}{\mathop{\text{A}}}\,\]. Then the maximum energy of emitted electrons would be
A)
0.041 eV
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B)
0.41 eV
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C)
4.1 eV
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D)
41 eV
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question_answer 31) Two resistances are connected in two gaps of a metre bridge. The balance point is 20 cm from the zero end. A resistance of\[15\,\Omega \]is connected in series with the smaller of the two. The null point shift to 40 cm. The value of the smaller resistance in Ohm is
A)
3
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B)
6
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C)
9
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D)
12
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question_answer 32) A capacitor of\[1\mu F\]initially charged to 10 V is connected across an ideal inductor of 0.1 mH. The maximum current in the circuit is
A)
0.5 A
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B)
1 A
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C)
1.5 A
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D)
2 A
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question_answer 33) An electron in hydrogen atom first jumps from second excited state to first excited state and then from first excited state to ground state. Let the ratio of wavelength, momentum and energy of photons emitted in these two cases be a, b and c respectively. Then
A)
\[a=\frac{9}{4}\]
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B)
\[b=\frac{27}{5}\]
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C)
\[c=\frac{5}{27}\]
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D)
\[c=\frac{1}{a}=\frac{5}{27}\]
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question_answer 34) If an electron has orbital angular momentum quantum number\[l=7,\]then it will have an orbital angular momentum equal to
A)
\[7\left( \frac{h}{2\pi } \right)\]
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B)
\[42\left( \frac{h}{2\pi } \right)\]
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C)
\[\sqrt{7}\left( \frac{h}{2\pi } \right)\]
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D)
\[\sqrt{56}\left( \frac{h}{2\pi } \right)\]
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question_answer 35) \[_{92}{{U}^{238}}\]on absorbing a neutron goes over to\[_{92}{{U}^{239}}\]. This nucleus emits an electron to go over to neptunium which on further emitting an electron goes over to plutonium. The resulting plutonium can be expressed as
A)
\[_{94}P{{u}^{239}}\]
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B)
\[_{90}P{{u}^{219}}\]
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C)
\[_{93}P{{U}^{240}}\]
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D)
\[_{92}P{{U}^{240}}\]
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question_answer 36)
The expansion of unit mass of a particle gas at constant pressure is shown in the diagram given below here
A)
\[a=\]volume,\[b={}^\circ C\]temperature
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B)
\[a=\]volume,\[K=\]temperature
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C)
\[a={}^\circ C\]temperature,\[b=\]volume
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D)
\[a=K\]temperature,\[b=\]volume
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question_answer 37) Suppose the kinetic energy of a body oscillating with amplitude A and at a distance \[x\]is given by \[K=\frac{3x}{{{x}^{2}}+{{A}^{2}}}\] The dimensions of B are the same as that of
A)
work/time
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B)
\[work\times distance\]
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C)
work/distance
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D)
\[work\times time\]
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question_answer 38) A block at rest explodes into 3 parts of the same mass. The momentum of the two parts are - 2pi and pj. The momentum of the third part will have a magnitude
A)
p
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B)
\[p\sqrt{3}\]
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C)
\[p\sqrt{5}\]
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D)
zero
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question_answer 39) ball falls from rest from a height h on to a floor and rebounds to a height\[\frac{h}{4}\]. The coefficient of restitution between the ball and the floor is
A)
\[\frac{1}{2}\]
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B)
\[\frac{1}{4}\]
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C)
\[\frac{1}{\sqrt{2}}\]
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D)
\[\frac{3}{4}\]
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question_answer 40) Capacitance of a capacitor becomes\[\frac{4}{3}\]times its original value if a dielectric slab of thickness\[t=\frac{d}{2}\]is inserted between the plates (d = separation between the plates). The dielectric constant of the slab is
A)
6
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B)
8
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C)
4
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D)
2
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question_answer 41) For a certain organ pipe, three successive resonance frequencies are observed at 425, 595 and 765 Hz respectively. Taking the speed of sound in air to be 340 m/s, determine the fundamental frequency of the pipe
A)
42.5 Hz
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B)
85 Hz
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C)
170 Hz
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D)
425 Hz
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question_answer 42) Energy released in the fission of a single\[_{92}{{U}^{235}}\]nucleus is 200 MeV. The fission rate of\[_{92}{{U}^{235}}\]fuelled reactor operating at power level of 5 MW is
A)
\[1.56\times {{10}^{14}}/s\]
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B)
\[1.56\times {{10}^{17}}/s\]
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C)
\[1.56\times {{10}^{20}}/s\]
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D)
\[1.56\times {{10}^{-17}}/s\]
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question_answer 43) A stone is dropped into a well. If the depth of water below the top be h and the velocity of sound is v, then the splash in water is heard after T second. Then
A)
\[T=\sqrt{\frac{2h}{g}}+\frac{h}{v}\]
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B)
\[T=2\sqrt{\frac{2h}{g}}\]
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C)
\[T=\frac{2h}{v}\]
done
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D)
\[T=\sqrt{\frac{2h}{g}}\times \frac{h}{v}\]
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question_answer 44) A square of side 3 cm is located at a distance 25 cm from a concave of square is at the axis of the mirror and the plane is normal to axis of mirror. The area enclosed by the image of the square is
A)
\[4c{{m}^{2}}\]
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B)
\[6c{{m}^{2}}\]
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C)
\[16c{{m}^{2}}\]
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D)
\[36c{{m}^{2}}\]
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question_answer 45) A block of metal weighing 2 kg is resting on a frictionless plane. It is struck by a jet releasing water at a rate of 1 kg/s and at a speed of 5 m/s. The initial acceleration of the block will be
A)
\[2.5\text{ }m/{{s}^{2}}\]
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B)
\[5.0\text{ }m/{{s}^{2}}\]
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C)
\[10\text{ }m/{{s}^{2}}\]
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D)
\[25\text{ }m/{{s}^{2}}\]
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question_answer 46) The radius of earth is 6400 km and\[g=10\] \[m/{{s}^{2}}\]. In order that a body of 5 kg weighs zero at the equator, the angular speed of earth will be
A)
\[\frac{1}{80}rad/s\]
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B)
\[\frac{1}{400}rad/s\]
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C)
\[\frac{1}{800}rad/s\]
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D)
\[\frac{1}{1600}rad/s\]
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question_answer 47) The ratio of the mean KE of chlorine and oxygen molecules at the same temperature is
A)
16 : 35.5
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B)
35.5 : 16
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C)
\[{{(35.5)}^{2}}:{{(16)}^{2}}\]
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D)
1 : 1
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question_answer 48) Zener diodes are used for
A)
rectification
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B)
amplification
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C)
stabilization of voltage
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D)
production of carrier waves
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question_answer 49) In Ingen hausz experiment the wax melts upto 2 cm and 5 cm on the iron and the silver rods respectively. If K for silver is taken as 1, then its value for iron is
A)
0.4
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B)
0.16
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C)
2.5
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D)
6.25
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question_answer 50) Solar spectrum at time of total solar eclipse is
A)
line emission spectrum
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B)
line absorption spectrum
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C)
continuous emission spectrum
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D)
band absorption spectrum
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question_answer 51) The alkane which has only primary hydrogen atom is
A)
pentane
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B)
iso-pentane
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C)
neo-pentane
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D)
2,2-dimethyl butane
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question_answer 52)
The IUPAC name of is
A)
2-amino pent-3-enoic acid
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B)
4-amino pent-2-enoic acid
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C)
3-ene-2-amino pentanoic acid
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D)
2-ene-4-amino pentanoic acid
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question_answer 53) The electrophile in the nitration of benzene is
A)
\[NO_{2}^{+}\]
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B)
\[N{{O}_{2}}\]
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C)
\[N{{O}^{+}}\]
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D)
\[NO_{2}^{-}\]
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question_answer 54) Glycerol can be separated from spent-lye in soap industry by
A)
steam distillation
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B)
fractional distillation
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C)
distillation under reduced pressure
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D)
ordinary distillation
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question_answer 55) \[Ca{{C}_{2}}+{{H}_{2}}O\xrightarrow{{}}A\xrightarrow[{}]{{{H}_{2}}S{{O}_{4}}/HgS{{O}_{4}}}B\]Identify A and B in the given reaction
A)
\[{{C}_{2}}{{H}_{2}}\]and\[C{{H}_{3}}CHO\]
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B)
\[C{{H}_{4}}\]and\[HCOOH\]
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C)
\[{{C}_{2}}{{H}_{4}}\]and\[C{{H}_{3}}COOH\]
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D)
\[{{C}_{2}}{{H}_{2}}\] and\[C{{H}_{3}}COOH\]
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question_answer 56) Benzene vapour mixed with air when passed over\[{{V}_{2}}{{O}_{5}}\]catalyst at 775 K gives
A)
glyoxal
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B)
oxalic acid
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C)
maleic anhydride
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D)
fumaric acid
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question_answer 57) Etherates are
A)
ethers
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B)
solution in ether
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C)
complexes of ethers with Lewis acid
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D)
complexes of ethers with Lewis base
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question_answer 58) When acetaldehyde is heated with Fehling's solution it gives a precipitate of
A)
\[Cu\]
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B)
\[CuO\]
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C)
\[C{{U}_{2}}O\]
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D)
\[Cu+C{{u}_{2}}O+CuO\]
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question_answer 59) The end product of\[C{{H}_{3}}COOH\xrightarrow{CaC{{O}_{3}}}A\xrightarrow{Heat}B\xrightarrow{N{{H}_{2}}OH}C\]
A)
acetaldehyde
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B)
acetoxime
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C)
formaldehyde oxime
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D)
methyl cyanide
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question_answer 60) 4-methyl benzene sulphonic acid reacts with sodium acetate to give
A)
done
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B)
done
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C)
done
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D)
done
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question_answer 61) Hydrogen peroxide when added to a solution of potassium permanganate acidified with sulphuric acid
A)
forms water only
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B)
acts as an oxidising agent
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C)
reduces sulphuric acid
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D)
acts as a reducing agent
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question_answer 62) Water is oxidised to oxygen by
A)
\[Cl{{O}_{2}}\]
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B)
\[KMn{{O}_{4}}\]
done
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C)
\[{{H}_{2}}{{O}_{2}}\]
done
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D)
fluorine
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View Answer play_arrow
question_answer 63) The magnetic moment u, of transition metals is related to the number of unpaired electrons, n as
A)
\[\mu =n{{(n+2)}^{2}}\]
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B)
\[\mu ={{n}^{2}}(n+2)\]
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C)
\[\mu =\sqrt{n(n+2)}\]
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D)
\[\mu =\frac{n}{\sqrt{(n+2)}}\]
done
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View Answer play_arrow
question_answer 64) Which of the following is a carbonate ore?
A)
Malachite
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B)
Diaspore
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C)
Pyrolusite
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D)
Cassiterite
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question_answer 65) The substance used in the thermite process of reducing metal ores is
A)
thorium
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B)
aluminium
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C)
carbon
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D)
platinum
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question_answer 66) Cuprous ion is colourless while cupric ion is coloured because
A)
both have half-filled p and d-orbital
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B)
cuprous ion has completed d-orbital and cupric ion has incomplete d-orbital
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C)
cuprous ion has incomplete d-orbital and cupric ion has complete d-orbital
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D)
both have unpaired electrons in d-orbital
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View Answer play_arrow
question_answer 67) Copper sulphate solution reacts with KCN to give
A)
\[CuCN\]
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B)
\[Cu{{(CN)}_{2}}\]
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C)
\[{{K}_{3}}[Cu{{(CN)}_{4}}]\]
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D)
\[{{K}_{2}}(Cu{{(CN)}_{4}}]\]
done
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question_answer 68) Which of the following is weightless when weighed in magnetic field?
A)
\[ScC{{l}_{3}}\]
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B)
\[FeC{{l}_{3}}\]
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C)
\[TiC{{l}_{3}}\]
done
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D)
\[VC{{l}_{3}}\]
done
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View Answer play_arrow
question_answer 69) The number of amino acids in insulin is
A)
30
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B)
21
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C)
51
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D)
40
done
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question_answer 70) Which of the following contains cobalt?
A)
Vitamin-A
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B)
Vitamin-C
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C)
Vitamin-K
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D)
Vitamin \[-{{B}_{12}}\]
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View Answer play_arrow
question_answer 71) Which of the potassium salt is added to baking powder?
A)
\[KHC{{O}_{3}}\]
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B)
\[KHS{{O}_{4}}\]
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C)
Potassium citrate
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D)
Potassium hydrogen tartarate
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View Answer play_arrow
question_answer 72) A deliquescent white crystalline hydroxide X reacts with a nitrate Y to form another hydroxide which decomposes to give a insoluble brown layer of its oxide. X is a powerful cautery and breaks down the proteins of skin flesh to a pasty mass. X and Y are
A)
\[NaOH,AgN{{O}_{3}}\]
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B)
\[NaOH,Zn{{(N{{O}_{3}})}_{2}}\]
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C)
\[NaOH,Al{{(N{{O}_{3}})}_{3}}\]
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D)
\[Ca{{(OH)}_{2}},HgN{{O}_{3}}\]
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View Answer play_arrow
question_answer 73) The cation which gives a yellow precipitate with potassium chromate is
A)
\[N{{H}_{4}}\]
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B)
\[B{{a}^{2+}}\]
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C)
\[C{{a}^{2+}}\]
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D)
\[N{{a}^{+}}\]
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View Answer play_arrow
question_answer 74) The hydrogen atoms in chloroform are
A)
acidic
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B)
basic
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C)
neutral
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D)
unpredictable
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View Answer play_arrow
question_answer 75) What is the compound C in the following sequence of reactions? \[Phenol\xrightarrow{NaOH}A\xrightarrow[47\,atm]{C{{O}_{2}},410\,K}B\xrightarrow{HCl}C\]
A)
Benzoicacid
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B)
Salicylic acid
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C)
Benzaldehyde
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D)
Salicylaldehyde
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View Answer play_arrow
question_answer 76) Victor Meyer's test is not given by
A)
\[{{(C{{H}_{3}})}_{2}}CHOH\]
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B)
\[{{C}_{2}}{{H}_{5}}OH\]
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C)
\[{{(C{{H}_{3}})}_{2}}COH\]
done
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D)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\]
done
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View Answer play_arrow
question_answer 77) An organic compound with molecular formula \[{{C}_{3}}{{H}_{5}}N\]on hydrolysis forms an acid which reduces Fehling's solution. The compound can be
A)
ethanenitrile
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B)
ethyl carbylamines
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C)
ethaoxyethane
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D)
propane nitrile
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question_answer 78) Bubble gum contains
A)
thiokol rubber
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B)
styrene-butadiene rubber
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C)
isobutylene-isoprene rubber
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D)
acrylonitrile-butadiene rubber
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View Answer play_arrow
question_answer 79) Which of the following is a tetrabasic acid?
A)
Orthophosphoric acid
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B)
Hypophosphorus acid
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C)
Metaphosphoric acid
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D)
Pyrophosphoric acid
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View Answer play_arrow
question_answer 80) Glass reacts with
A)
oleum
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B)
\[HF\]
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C)
\[HN{{O}_{3}}\]
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D)
\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
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View Answer play_arrow
question_answer 81) 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
question_answer 82) In an octahedral crystal field splitting the number of orbitals pushed down in energy is
A)
3
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B)
2
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C)
5
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D)
zero
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View Answer play_arrow
question_answer 83) \[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]N{{O}_{2}}\]and\[[Co{{(N{{H}_{3}})}_{4}}Cl.N{{O}_{2}}]Cl\]are
A)
optical
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B)
geometrical
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C)
ionisation
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D)
linkage
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question_answer 84) Hybridisation of\[Fe\]in\[{{K}_{3}}[Fe{{(CN)}_{6}}]\]is
A)
\[s{{p}^{3}}\]
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B)
\[{{d}^{2}}s{{p}^{3}}\]
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C)
\[s{{p}^{3}}{{d}^{2}}\]
done
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D)
\[ds{{p}^{3}}\]
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View Answer play_arrow
question_answer 85) In zinc blende structure, the coordination number of\[Z{{n}^{2+}}\]ion is
A)
2
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B)
6
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C)
8
done
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D)
4
done
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question_answer 86) The mole fraction of water in 20% aqueous solution of\[{{H}_{2}}{{O}_{2}}\]is
A)
\[\frac{20}{80}\]
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B)
\[\frac{80}{20}\]
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C)
\[\frac{68}{77}\]
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D)
\[\frac{77}{68}\]
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View Answer play_arrow
question_answer 87) 18 g of glucose is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at\[100{}^\circ C\]is
A)
759.2 torr
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B)
760.5 torr
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C)
76.8 torr
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D)
752.40 torr
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View Answer play_arrow
question_answer 88) Which of the following element outermost orbit's last electron has magnetic quantum number\[m=\text{0}\]?
A)
\[Na\]
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B)
\[O\]
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C)
\[Cl\]
done
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D)
\[N\]
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View Answer play_arrow
question_answer 89) The wavelength of radiation having frequency 1000 Hz is
A)
\[3\times {{10}^{13}}cm\]
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B)
\[3\times {{10}^{7}}cm\]
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C)
\[3000\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
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D)
\[300\text{ }nm\]
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View Answer play_arrow
question_answer 90) The bond dissociation energies of gaseous\[{{H}_{2}},C{{l}_{2}}\]and\[HCl\]are 104, 58 and 103 kcal respectively. The enthalpy of formation of \[HCl\]gas would be
A)
\[-\text{ }44\text{ }kcal\]
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B)
\[-\text{ }88\text{ }kcal\]
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C)
\[-22\text{ }kcal\]
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D)
\[-\text{ }11\text{ }kcal\]
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View Answer play_arrow
question_answer 91) A radioactive element with half-life 6.5 h has \[48\times {{10}^{19}}\]atoms. Number of atoms left after 26 h.
A)
\[3\times {{10}^{19}}\]
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B)
\[6\times {{10}^{19}}\]
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C)
\[12\times {{10}^{19}}\]
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D)
\[24\times {{10}^{19}}\]
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View Answer play_arrow
question_answer 92) \[_{13}A{{l}^{27}}\]is a stable isotope,\[_{13}A{{l}^{29}}\]is expected to disintegrate by
A)
\[\alpha -\]emission
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B)
\[\beta -\]emission
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C)
positron emission
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D)
proton emission
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question_answer 93) Which one of the following compounds has \[s{{p}^{2}}-\]hybridisation?
A)
\[C{{O}_{2}}\]
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B)
\[S{{O}_{2}}\]
done
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C)
\[{{N}_{2}}O\]
done
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D)
\[CO\]
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View Answer play_arrow
question_answer 94) Of the following sets which one does not contain isoelectronic species?
A)
\[SO_{3}^{2-},\text{ }CO_{3}^{2-},\text{ }NO_{3}^{-}\]
done
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B)
\[BO_{3}^{3-},\text{ }CO_{3}^{2-},\text{ }NO_{3}^{-}\]
done
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C)
\[C{{N}^{-}},\text{ }{{N}_{2}},\text{ }C_{2}^{2-}\]
done
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D)
\[PO_{4}^{3-},SO_{4}^{2-},ClO_{4}^{-}\]
done
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View Answer play_arrow
question_answer 95) Among\[A{{l}_{2}}{{O}_{3}},Si{{O}_{2}},{{P}_{2}}{{O}_{3}}\]and\[S{{O}_{2}}\]the correct order of acid strength is
A)
\[{{P}_{2}}{{O}_{3}}<A{{l}_{2}}{{O}_{3}}<Si{{O}_{2}}<S{{O}_{2}}\]
done
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B)
\[Si{{O}_{2}}<S{{O}_{2}}<A{{l}_{2}}{{O}_{3}}<{{P}_{2}}{{O}_{3}}\]
done
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C)
\[A{{l}_{2}}{{O}_{3}}<Si{{O}_{2}}<{{P}_{2}}{{O}_{3}}<S{{O}_{2}}\]
done
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D)
\[S{{O}_{2}}<{{P}_{2}}{{O}_{3}}<Si{{O}_{2}}<A{{l}_{2}}{{O}_{3}}\]
done
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View Answer play_arrow
question_answer 96) The equilibrium constant for the reaction\[S{{O}_{3}}(g)S{{O}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\]is\[{{K}_{c}}=4.9\times {{10}^{-2}}\]. The value of\[{{K}_{c}}\]for the reaction \[2S{{O}_{2}}(g)+{{O}_{2}}(g)2S{{O}_{3}}(g)\]will be
A)
416
done
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B)
\[2.40\times {{10}^{-3}}\]
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C)
\[9.8\times {{10}^{-2}}\]
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D)
\[4.9\times {{10}^{-2}}\]
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View Answer play_arrow
question_answer 97) A sample of\[N{{a}_{2}}C{{O}_{3}}.{{H}_{2}}O\]weighing 0.62 g is added to 100 mL of\[0.1\text{ }N\,{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] solution. What will be the resulting solution?
A)
Neutral
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B)
Basic
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C)
Acidic
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D)
Unpredictable
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question_answer 98) Assertion An electrochemical cell can be set up only if the redox reaction is spontaneous. Reason (R) A reaction is spontaneous if free energy change is negative.
A)
Both assertion and reason are true and reason is the correct explanation of the assertion.
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B)
Both assertion and reason are true but reason is not the correct explanation of assertion.
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C)
Assertion is true, but reason is false.
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D)
Assertion is false but reason is true.
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question_answer 99) Random motion of colloidal particles is known as
A)
Dialysis
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B)
Tyndall effect
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C)
Brownian movement
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D)
Diffusion
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question_answer 100) On increasing the temperature, the rate of reaction increases because of
A)
more number of collisions
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B)
decrease in mean free path
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C)
more number of energetic electrons
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D)
less number of energetic electrons
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question_answer 101) Anaerobic photosynthetic bacteria appeared on the earth about
A)
500 million years ago
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B)
1500 million years ago
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C)
2500 million years ago
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D)
3500 million years ago
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question_answer 102) Many bacteria are now resistant to penicillin because
A)
penicillin cause gene mutations
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B)
previously resistant forms survived and reproduced better than non-resistant forms
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C)
hospital environment inhibits competition among bacteria
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D)
penicillin triggers the synthesis of resistant proteins
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question_answer 103) Cladogram represents
A)
features and shared characters depicting evolution in the form of a diagram
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B)
population
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C)
physiological relationships of organisms
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D)
None of the above
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question_answer 104) Viroids have
A)
single-stranded RNA not enclosed by protein coat
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B)
single-stranded DNA not enclosed by protein coat
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C)
double-stranded DNA enclosed by protein coat
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D)
double-stranded RNA enclosed by protein coat
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question_answer 105) E. coli lives in human intestine and cause
A)
urinary tract infection in infants only
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B)
diarrhoea only in adults
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C)
meningitis
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D)
None of the above
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question_answer 106) All are true about bacterial endospores except
A)
sporulation in bacteria is a method of reproduction
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B)
spores of all medically important bacteria are killed by autoclaving at 121°C for 15 minutes
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C)
spores can be stained by modified Zichi-Neelsen technique
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D)
bacterial spores help them to survive under favourable conditions
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question_answer 107) Diatoms do not decay easily because
A)
they have siliceous walls
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B)
their body is impervious to water
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C)
they are chitinous
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D)
they are abundant in saline soil
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question_answer 108) Sleeping sickness is caused by
A)
Trypanosoma
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B)
Leishmania
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C)
Entamoeba
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D)
Plasmodium
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question_answer 109) Myxamoebae of slime moulds are
A)
active vegetative forms
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B)
stages to overcome un favourable conditions
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C)
gametes which undergo sexual reproduction
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D)
resultants of sexual reproduction
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question_answer 110) The disease witches broom of leguminous family is caused by
A)
virus
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B)
mycophage
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C)
protozoan
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D)
fungus
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question_answer 111) In Pinus
A)
seed is winged but pollen grains are not
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B)
both seed and pollen grains are wingless
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C)
pollen grains are winged but seed is not
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D)
both seeds and pollen grains are winged
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question_answer 112) Which of the following plant does not belong to embryophyta?
A)
Dryopteris
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B)
Funaria
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C)
Cycas
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D)
Ulothrix
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question_answer 113) Hydra can parlyse prey by
A)
nematocysts
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B)
tentacles
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C)
mouth
done
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D)
None of these
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question_answer 114) The cysticercus form of Taenia can be traced in
A)
pig
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B)
goat
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C)
sheep
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D)
man
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question_answer 115) The typhlosole of earthworm is related with
A)
excretion
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B)
respiration
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C)
reproduction
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D)
absorption
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question_answer 116) Separating chromatids during metaphase and behaviour of chromosomes during mitotic and meiotic divisions can be best studied by
A)
phase contrast microscope
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B)
SEM
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C)
X-ray microscope
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D)
cell-fractionation method
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question_answer 117) In eukaryotic cells, the amount of basic proteins is often found to be
A)
more than the amount of DNA
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B)
less than the amount of DNA
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C)
equal to the amount of DNA
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D)
None of the above
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question_answer 118) Fluid mosaic model exhibits amphipathy because of
A)
glycoproteins
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B)
phospholipids
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C)
lipids
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D)
glycolipids
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question_answer 119) Most of the hydrolytic enzymes of lysosomes function at
A)
acidic pH
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B)
basic pH
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C)
neutral pH
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D)
any pH
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question_answer 120) Which one is indispensible for ATP synthesis?
A)
Calcium
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B)
Sulphur
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C)
Phosphorus
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D)
Iron
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question_answer 121) Occurrence of cells in diploid organisms containing multiples of the 2n genomes is known as
A)
aneuploidy
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B)
haploidy
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C)
amphidiploidy
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D)
allopolyploidy
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question_answer 122) The disorders such as alkaptonuria and phenylkeronuria are referred to as
A)
acquired disease
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B)
congenital disease
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C)
infectious disease
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D)
All of these
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question_answer 123) When DNA is formed from RNA, it is called
A)
D-DNA
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B)
Z-DNA
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C)
C-DNA
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D)
A-DNA
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question_answer 124) Which of the following term is not concerned with generic recombination in bacteria?
A)
Transformation
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B)
Transduction
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C)
Translation
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D)
Conjugation
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question_answer 125) Recessive gene for amaurotic idiocy in human is
A)
penetrance gene
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B)
pleiotropic gene
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C)
lethal gene
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D)
epistaric gene
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question_answer 126) The thick roots that hang down from a banyan tree are called
A)
stilt roots
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B)
prop roots
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C)
pneumatophores
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D)
buttress root
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question_answer 127) The reserve carbohydrates in onion are stored in the fleshy leaves. The characteristic smell of onion bulb is due to presence of
A)
sugars
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B)
reserve carbohydrates
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C)
sulphur compounds
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D)
bad odour of the soil in which they are cultivated
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question_answer 128) Syngenecious condition means
A)
anthers fused and filaments free
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B)
both anthers and filaments fused
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C)
filaments fused and anthers free
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D)
filaments fused with carpals
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question_answer 129) The caryopsis is a fruit
A)
that does not have fruit wall
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B)
that is fleshy and many seeded
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C)
in which fruit wall and seed coat are fused
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D)
that dehisces to expel seed
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question_answer 130) The respiratory quotient (RQ) of a germinating castor seed is
A)
equal to one
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B)
greater than one
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C)
less than one
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D)
equal to zero
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question_answer 131) Pure cellulose is obtained from
A)
root hairs
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B)
stem hairs
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C)
leaf hairs
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D)
seed hairs
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question_answer 132) Glisson's capsule is associated with
A)
kidney
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B)
liver
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C)
pancreas
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D)
spleen
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question_answer 133) Cyclosis is a term used for
A)
the active movement of Paramecium
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B)
the active movement of the protoplasm in living cells
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C)
the active movement of blood cells
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D)
None of the above
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question_answer 134) The type of plants having adaptations to check transpiration are
A)
xerophytes
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B)
epiphytes
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C)
lithophytes
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D)
halophytes
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question_answer 135) In the higher plants, nitrate ions absorbed from the soil are converted to ammonia in two steps. In second step, the electrons required for reduction of nitrite ions are donated by
A)
cytochrome \[{{\text{P}}_{\text{450}}}\]
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B)
nitrate reductase
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C)
ferredoxin
done
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D)
nitrite reductase
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question_answer 136) In \[{{C}_{4}}\]plants, the primary \[C{{O}_{2}}\]acceptor is
A)
3-PGA
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B)
Oxaloacetic acid
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C)
RuBP
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D)
PEP
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question_answer 137) Emulsification is the function of
A)
bile
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B)
lipases
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C)
oesterases
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D)
proteases
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question_answer 138) Which of the following cations is required for the conversion of prothrombin into active thrombin by thromboplastin?
A)
\[C{{u}^{2+}}\]
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B)
\[P{{e}^{3+}}\]
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C)
\[F{{e}^{2+}}\]
done
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D)
\[C{{a}^{2+}}\]
done
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question_answer 139)
Match the different types of heart given in column \[\text{I}\] with their respective examples given in column\[\text{II}\text{.}\]Choose the answer showing correct combination of alphabets of two columns. Column \[\text{I}\](Heart) Column\[\text{II}\](Examples) A. Myogenic 1. Limulus B. Neurogenic 2. Mollusca C. Branchial heart 3. Human D. Pulmonary heart 4. Herdmania 5. Shark
A)
A B C D 2 1 5 3
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B)
1 2 3 5
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C)
2 4 5 1
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D)
4 1 3 5 The hearts of vertebrates, mutates and molluscs are considered myogenic.
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question_answer 140) Tube feet is the locomotory organ of
A)
star fish
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B)
jelly fish
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C)
cray fish
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D)
silver fish
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question_answer 141) How many saddle joints can be traced in human body?
A)
2
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B)
4
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C)
8
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D)
10
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question_answer 142) Addison's disease results from
A)
hyposecretion of adrenal
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B)
hypertrophy of gonads
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C)
hyperactivity of cells of Leydig
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D)
None of the above
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question_answer 143) Glands of Ze is open into hair follicle of 'eye lashes'. They are modified
A)
sebaceous glands
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B)
sweat glands
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C)
mucous glands
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D)
None of these
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question_answer 144) Heterospory and seed habit is connected to
A)
bract
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B)
strobilus
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C)
petiole
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D)
ligule
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question_answer 145) Gall nuts on plants is produced by
A)
larva of dipterous insects
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B)
larva of Anopheles
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C)
microorganism
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D)
fungi
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question_answer 146) Biosphere is
A)
Government protected area
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B)
ecosystem
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C)
place of individual interaction
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D)
earth's crust
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question_answer 147) The conservation of genetic resources with in natural ecosystem is
A)
ex situ conservation
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B)
in situ conservation
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C)
Both and
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D)
None of the above
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question_answer 148) Respiratory disorders occur due to automobile exhaust because of the release of
A)
CO
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B)
\[C{{H}_{4}}\]
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C)
Cl
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D)
\[{{H}_{2}}O\]
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question_answer 149) Sal forest is
A)
tropical rain forest
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B)
tropical evergreen forest
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C)
temperate deciduous
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D)
deciduous
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question_answer 150) A hypertension drug is obtained from
A)
Sida
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B)
Tulsi
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C)
Azadirachta
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D)
Rauwolffia
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question_answer 151) Consider the following two statements and answer accordingly Assertion In alcoholic drink, the alcohol is converted into glucose in liver. Reason Liver cells are able to produce glucose from alcohol by fermentation.
A)
Both Assertion and Reason are true and Reason is the correct explanation of Assertion
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B)
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
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C)
Assertion is true but Reason is false
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D)
Both Assertion and Reason are false
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question_answer 152) The yolk of avian eggs contain
A)
albumin
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B)
provitelin
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C)
vitellin and lecithin
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D)
All of the above
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question_answer 153) For being a good firewood, it must not be
A)
resinous
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B)
non-smoky
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C)
combustible
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D)
easy to dry
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question_answer 154) Cloning is meant for
A)
production of HGH gene in E. coli
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B)
to preserve the genotype of organism
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C)
to replace the original gene
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D)
All of the above
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question_answer 155) A slight opacity of cornea is
A)
mastitis
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B)
cataract
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C)
nebula
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D)
catarrh
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question_answer 156) The sporozoites of Plasmodium vivax are formed in
A)
gametocytes
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B)
sporoblasts
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C)
oocysts
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D)
spores
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question_answer 157) Diabetes in sipidus occurs due to hypersecretion of
A)
oxytocin
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B)
vasopressin
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C)
thymosine
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D)
insulin
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question_answer 158) Vascular grafts are made up of
A)
rubber tubes
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B)
dacron or Teflon
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C)
fibre glass
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D)
plastic
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question_answer 159) Hansen's disease is
A)
syphilis
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B)
poliomyelitis
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C)
mumps
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D)
leprosy
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question_answer 160) Syconus is characteristic of
A)
Ficus
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B)
Jack fruit
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C)
pineapple
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D)
All of these
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question_answer 161) Water enters from soil into the root hairs due to
A)
turgor pressure of roots hair
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B)
osmotic pressure of root hair
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C)
suction pressure
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D)
diffusion pressure
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question_answer 162) In recent years, presoaked laundry agent contains an enzyme
A)
pepsin
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B)
flavin
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C)
amylase
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D)
subtilin
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question_answer 163) Neoteny is seen in amphibians belonging to order
A)
Urodela
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B)
Gymnophiona
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C)
Anura
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D)
Apoda
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question_answer 164) Elephantiasis is caused by
A)
Entamoeba coli
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B)
Tryponosoma gambiense
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C)
Ascaris lumbricoides
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D)
Wuchereria bancrofti
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question_answer 165) Ergotamine tartarate extracted from Claviceps is used for cure of
A)
bodyache
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B)
headache
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C)
fever
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D)
severe stomach pain
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question_answer 166) The odd one among following is
A)
Nitrococcus, Nitrobacter, Nitrosomonas
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B)
Rhizobium, Aulosira, Bacillus, Polymyxa
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C)
Clostridiitm, Rhizobium, Nostoc
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D)
Anabaena, Nastoc, Azotobacter, Clostridium
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question_answer 167) Synzoospore is found in
A)
Ulothrix
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B)
Volvox
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C)
Vaucfieria
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D)
Oedogonium
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question_answer 168) Sponges have originated from
A)
ciliate protozoans
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B)
sporozoan protozoans
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C)
sarcodine protozoans
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D)
choanoflagellate protozoans
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question_answer 169) Chenopodium oil is most successfully used for the expulsion of
A)
tapeworm
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B)
liver fluke
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C)
flat worms
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D)
round worm
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question_answer 170) The speciation is complete in isolated populations and again when come in contact there will be
A)
successful hybridization
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B)
no hybridization
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C)
fertile hybrid
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D)
None of the above
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question_answer 171) Schizogony of Plasmodium is also called as
A)
sporogony
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B)
gamogony
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C)
agamogony
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D)
binary fission
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question_answer 172) The secretion of macromolecules by fusing a transport vesicle to the plasma membrane is
A)
pinocytosis
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B)
phagocytosis
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C)
endocytosis
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D)
exocytosis
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question_answer 173) Amount of DNA present in the mitochondria of Neurospora is
A)
10%
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B)
40%
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C)
1%
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D)
nil
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question_answer 174) When we eat sugarcane, we are ingesting
A)
glucose
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B)
starch
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C)
glycogen
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D)
cellulose
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question_answer 175) Nitrogen is the main constituent of
A)
fats
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B)
protein
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C)
polyphosphates
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D)
carbohydrates
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question_answer 176) At the cellular level energy is released. This process is
A)
anabolic
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B)
cacabolic
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C)
oxidation process
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D)
All of these
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question_answer 177) Inorganic prosthetic groups is
A)
coenzyme
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B)
activator
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C)
hormone
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D)
apoenzyme
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question_answer 178) Heterozygosity can be ascertained by
A)
back cross
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B)
reciprocal cross
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C)
blending inheritance
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D)
multiple crossing
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question_answer 179) Pleiotropy is a term that refers to the situation in which a gene influences more than one trait. Its example is given by
A)
sickle cell anaemia
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B)
haemophilia
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C)
colour blindness
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D)
Both and
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question_answer 180) Production of hybridoma is an example of
A)
transgenesis
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B)
cell cloning
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C)
gene cloning
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D)
None of these
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question_answer 181) An orthotropus ovule has micropyie and cbalaza
A)
parallel to funicle
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B)
parallel along with ovule
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C)
at right angle to funicle
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D)
in straight line with funicle
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question_answer 182) ABA closes stomata but which hormone encourages them to open?
A)
GA
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B)
Auxin
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C)
Cytokinin
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D)
Ethylene
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question_answer 183) Which one of the following micronutrient is required by plants in least quantity?
A)
Mo
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B)
B
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C)
Zn
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D)
Mn
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question_answer 184) An example of a parasitic plant which is strictly epiphytic is
A)
Cuscuta
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B)
Viscum
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C)
Orobanche
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D)
Rafflesia
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question_answer 185) In which one of the following do the two names refer to one and the same thing?
A)
Krebs' cycle and Calvin cycle
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B)
Tricarboxylic acid cycle and citric add cycle
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C)
Citric acid cycle and Calvin cycle
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D)
Tricarboxylic acid cycle and urea cycle
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question_answer 186) Which is the place of cellulose digestion in ruminants?
A)
Rumen
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B)
Reticulum
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C)
Omassum
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D)
Abomassum
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question_answer 187) The most abundant granulocytes in human blood are
A)
basophils
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B)
eosinophils
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C)
neutrophils
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D)
monocytes
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question_answer 188) A medicine that promotes the secretion of excess urine from body is
A)
uretic
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B)
monouretic
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C)
diuretic
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D)
muretic
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question_answer 189) Number of cervical vertebra in cow is
A)
5
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B)
6
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C)
7
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D)
11
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question_answer 190) Eyes of cats glitter at night due to presence of
A)
luciferin
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B)
tapetum cellulosum
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C)
tapetum fibrosum
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D)
porphyropsin
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question_answer 191) The plant material which is widely used in the preparation of culture medium is
A)
(a ) Cycas revolute
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B)
Cocos nucifera
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C)
Pinus longifolia
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D)
Borassus flabellifer
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question_answer 192) A species is a collection of denies. The demes is a group of
A)
genes in different environment
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B)
individuals in same environment
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C)
chromosome in same organism
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D)
population with a common gene pool
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question_answer 193) Apple scab disease is caused by
A)
Ustilago
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B)
Puccinia
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C)
Erysiphe
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D)
None of these
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question_answer 194) Blackwood is obtained from
A)
Albizzia
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B)
Tectona
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C)
Dalbergia
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D)
Manihot
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question_answer 195) Water pollution is caused due to
A)
sewage and other wastes
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B)
industrial effluents
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C)
agricultural discharges
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D)
All of the above
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question_answer 196) Smallest animal virus is
A)
pox virus
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B)
coliphage
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C)
rhino virus
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D)
polio virus
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question_answer 197) Ethylene is
A)
gaseous hormone
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B)
largest hormone
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C)
liquid-gas mixture
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D)
solid hormone
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question_answer 198) Circinate vernation in leaves is caused due to
A)
epinasty
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B)
hyponasty
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C)
apostrophe
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D)
None of these
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question_answer 199) Semen consists of an enzyme
A)
seminase
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B)
hyaluronidase
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C)
vasiculase
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D)
ligase
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question_answer 200) After exponential increase, population growth declines and stagnates. The growth curve is
A)
S-shaped
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B)
J-shaped
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C)
straight line
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D)
circular
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