question_answer 1) In the relation V = \[V=\frac{\pi p{{r}^{4}}}{8\eta l}\] where the symbols have their usual meanings, the dimensions of V are
A)
\[[{{M}^{0}}{{L}^{3}}{{T}^{0}}]\]
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B)
\[[{{M}^{0}}{{L}^{3}}{{T}^{-1}}]\]
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C)
\[[{{M}^{0}}{{L}^{-3}}T]\]
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D)
\[[M{{L}^{3}}{{T}^{0}}]\]
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question_answer 2) A point moves such that its displacement as a function of time is given by \[{{x}^{2}}={{t}^{2}}+1.\] Its acceleration at time t is
A)
\[\frac{1}{{{x}^{4}}}\]
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B)
\[\frac{t}{{{x}^{2}}}\]
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C)
\[\frac{t}{x}-\frac{{{t}^{2}}}{{{x}^{3}}}\]
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D)
\[\frac{1}{x}-\frac{t}{{{x}^{2}}}\]
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question_answer 3) The angle of projection for which the horizontal range and the maximum height of the projectile are equal is
A)
\[45{}^\circ \]
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B)
\[\text{ }\!\!\theta\!\!\text{ =ta}{{\text{n}}^{-1}}(4)\]
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C)
\[\text{ }\!\!\theta\!\!\text{ =ta}{{\text{n}}^{-1}}(0.25)\]
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D)
none of these
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question_answer 4) A body of mass 10 kg falls from a height of 5 m (g = 10 m/s) and is stopped within one-tenth of a second on the ground. The force of interaction is
A)
100 N
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B)
zero
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C)
1000 N
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D)
1100N
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question_answer 5) Two bodies, having masses in the ratio 1:4, have kinetic energies in the ratio 4:1. The ratio of their linear momentum is
A)
1 : 1
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B)
1 : 2
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C)
2 : 1
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D)
1 : 4
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question_answer 6)
A mass m slides from rest down the surface of a frictionless hemispherical bowl of radius r from the highest point A. The velocity of mass when it reaches the bottom is
A)
\[\sqrt{2gr}\]
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B)
\[\sqrt{mgr}\]
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C)
2mgr
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D)
\[gr\]
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question_answer 7) An engine develops 20 HP. When rotating at a speed of 1800 rev/min. The torque that it delivers is
A)
400 N-m
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B)
60N-m
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C)
40 N-m
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D)
80 N-m
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question_answer 8) How much deep inside the earth (radius R) should a mango, so that his weight becomes one-fourth of that on earths surface?
A)
\[\frac{R}{4}\]
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B)
\[\frac{R}{2}\]
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C)
\[\frac{3R}{4}\]
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D)
None of these
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question_answer 9) If the speed of light were \[\frac{2}{3}\] of its present value, the energy released in a given atomic explosion will be decreased by a fraction
A)
\[\frac{2}{3}\]
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B)
\[\frac{4}{9}\]
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C)
\[\frac{5}{9}\]
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D)
\[\frac{2}{9}\]
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question_answer 10) 10. The difference between a photon and neutrino is
A)
the spin of photon is 1 and that of neutrino is \[\frac{1}{2}\] in units of \[\frac{h}{2\pi }\]
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B)
the spin of photon is \[\frac{1}{2}\] and that of neutrino is 1 in units of\[\frac{h}{2\pi }\]
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C)
both have equal spin but neutrino is electromagnetic in nature
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D)
both have unequal spin but neutrino is electromagnetic in nature
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question_answer 11) Alcohol is more volatile than water, because
A)
its boiling point is lower than water
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B)
it is an organic liquid
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C)
its freezing point is lower than water
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D)
its vapour pressure is 2.5 times greater than water
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question_answer 12) Certain substance emits wavelengths \[{{\lambda }_{1,}}{{\lambda }_{2,}}{{\lambda }_{3}}\] and \[{{\lambda }_{4,}}\] when it is at a high temperature. When the substance is at a colder temperature, it will absorb only the following wavelengths
A)
\[{{\lambda }_{1}}\]
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B)
\[{{\lambda }_{2}}\]
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C)
\[{{\lambda }_{1}}\,\text{and}\,{{\lambda }_{2}}\]
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D)
\[{{\lambda }_{1,}}{{\lambda }_{2,}}{{\lambda }_{3}}\,\text{and}\,{{\lambda }_{4}}\]
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question_answer 13) The deflection in a moving coil galvanometer is reduced to half when it is shunted with a coil of resistance S. The resistance of the galvanometer G = 40 \[\Omega .\] The value of Sis
A)
80\[\Omega .\]
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B)
40\[\Omega .\]
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C)
20\[\Omega .\]
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D)
15\[\Omega .\]
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question_answer 14) In Ingen-Hausz experiment the wax melts up to 5 cm and 10 cm on bars A and B respectively. The ratio of the thermal conductivities of A and B is
A)
1 : 2
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B)
1 : 4
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C)
1:8
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D)
1 : 16
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question_answer 15) A body executes SHM with an amplitude A. Its energy is half kinetic and half potential when the displacement is
A)
\[\frac{A}{3}\]
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B)
\[\frac{A}{2}\]
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C)
\[\frac{A}{\sqrt{2}}\]
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D)
\[\frac{A}{2\sqrt{2}}\]
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question_answer 16) The period of the simple pendulum in a stationary lift is T. If the lift move upwards with an acceleration g, the period will be
A)
\[\infty \]
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B)
\[\sqrt{\frac{3}{5}}T\]
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C)
\[\sqrt{\frac{5}{3}}T\]
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D)
\[\frac{T}{\sqrt{2}}\]
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question_answer 17) A wave travelling along positive y-axis is given by\[y=A\text{ }sin\]\[(\omega -kx).\] If it is reflected from rigid boundary such that 80% amplitude is reflected, then equation of reflected wave is
A)
\[y=A\sin (\omega t+kx)\]
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B)
\[y=-0.8A\sin (\omega t+kx)\]
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C)
\[y=0.8A\sin (\omega t+kx)\]
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D)
\[y=A\sin (\omega t+0.8\,kx)\]
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question_answer 18) The surface charge density of the earth is
A)
\[{{10}^{-9}}c{{m}^{-2}}\]
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B)
\[{{10}^{-6}}c{{m}^{-2}}\]
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C)
\[-{{10}^{-9}}c{{m}^{-2}}\]
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D)
\[-100\text{ }c{{m}^{-2}}\]
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question_answer 19) The work done in increasing the voltage across the plates of a capacitor from 5V to 10 V is W. The work done in increasing the voltage from 10 V to 15V will be
A)
\[W\]
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B)
\[\frac{4W}{3}\]
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C)
\[\frac{5W}{3}\]
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D)
\[2W\]
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question_answer 20)
The current flowing in the given circuit is 0.1 A. The potential difference between the points \[x\] and y is
A)
4.0V
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B)
3.0V
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C)
2.5V
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D)
2.0V
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question_answer 21) The neutral temperature of a thermocouple is \[300{}^\circ C\]. What is the inversion temperature, if the temperature of cold junction is\[10{}^\circ C\]?
A)
\[590{}^\circ C\]
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B)
\[610{}^\circ C\]
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C)
\[310{}^\circ C\]
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D)
\[290{}^\circ C\]
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question_answer 22) Two bulbs 100 W, 250 V and 200 W, 250 V are connected in parallel across a 500 V line. Then
A)
100 W bulb will be fused
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B)
200 W bulb will be fused
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C)
both bulbs will be fused
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D)
no bulb will be fused
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question_answer 23) An electron is moving in a circle of radius r in a uniform magnetic field B. Suddenly the field is D reduced to \[\frac{B}{2}.\] The radius of the circle now becomes
A)
\[\frac{r}{2}\]
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B)
\[\frac{r}{4}\]
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C)
2r
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D)
4r
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question_answer 24) If the number of turns per unit length of a coil of solenoid is doubled, the self-inductance of solenoid will be
A)
remain unchanged
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B)
be halved
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C)
be doubled
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D)
becomes four times
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question_answer 25) A copper ring is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet is
A)
equal to that due to gravity
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B)
less than that due to gravity
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C)
more than that due to gravity
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D)
none of the above
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question_answer 26) An inductance, a capacitance and a resistance are connected in series across a source of alternating voltage. At resonance, the applied voltage and the current flowing through the circuit will have a phase difference
A)
\[\frac{\pi }{4}\]
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B)
zero
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C)
\[\pi \]
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D)
\[\frac{\pi }{2}\]
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question_answer 27) To which region of electromagnetic spectrum, the frequency 1 GHz corresponding?
A)
Ultraviolet rays
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B)
Radiowaves
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C)
Visible radiation
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D)
X-rays
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question_answer 28) When an object is moved along the axis of a lens, images three times the size of the object are obtained when the object is at 16 cm and at 8 cm respectively from the lens. The focal length and nature of the lens are
A)
12 cm, concave
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B)
4 cm, concave
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C)
12 cm, convex
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D)
4 cm, convex
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question_answer 29) Which one of the following phenomena is used in optical fibres?
A)
Scattering
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B)
Successive reflections
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C)
Refraction
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D)
Total internal reflection
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question_answer 30) The ratio of specific charge of a proton to that of an a-particle is
A)
1 : 4
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B)
1: 2
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C)
4: 1
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D)
2 : 1
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question_answer 31) A metallic surface ejects electrons when exposed to green light of intensity \[I\] but no photoelectrons are emitted when exposed to yellow light of intensity \[I\] It is possible to eject electrons from the same surface by
A)
yellow light of same intensity which is more than \[I\]
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B)
green light of any intensity
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C)
red light of any intensity
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D)
none of the above
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question_answer 32) In hydrogen spectrum the wavelength of \[{{H}_{\alpha }}\] line is 656 nm, where as in the spectrum of a distant galaxy, \[{{H}_{\alpha }}\]line wavelength is 706 nm. Estimated speed of galaxy with respect to earth is
A)
\[2\times {{10}^{8}}m/s\]
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B)
\[2\times {{10}^{7}}m/s\]
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C)
\[2\times {{10}^{6}}m/s\]
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D)
\[2\times {{10}^{5}}m/s\]
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question_answer 33)
The resistance of a germanium junction diode, whose\[V-I\]is shown in figure is \[\text{(}{{\text{V}}_{\text{k}}}\text{=0}\text{.3}\,\text{V)}\]
A)
\[5\,k\,\Omega \]
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B)
\[0.2\,k\,\Omega \]
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C)
\[2.3\,k\,\Omega \]
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D)
\[\left( \frac{10}{2.3} \right)k\,\Omega \]
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question_answer 34) A circular loop of radius R carrying current \[I\] lies in \[xy\] plane with its centre at origin. The total magnetic flux through \[x-y\] plane is
A)
directly proportional to \[I\]
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B)
directly proportional to R
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C)
directly proportional to \[{{R}^{2}}\]
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D)
zero
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question_answer 35) The essential distinction between X-rays and -\[y\]rays is that
A)
\[y\]-rays have smaller wavelength than -rays
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B)
\[y\]-rays emanate from nucleus while X-rays emanate from outer part of the atom
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C)
\[y\]-rays have greater ionizing power than X-rays
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D)
\[y\]-rays are more penetrating than X-rays
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question_answer 36) A convex mirror is used to form an image of a real object. Then, the incorrect statement is
A)
The image lies between the pole and the focus
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B)
The image is diminished in size
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C)
The image is erect
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D)
The image is real
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question_answer 37) A vessel is half-filled with a liquid of refractive index \[\mu \]. The other half of the vessel is filled with an immiscible liquid of refractive index 1.5\[\mu \]. The apparent depth of the vessel is 50% of the actual depth. Then \[\mu \] is
A)
1.4
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B)
1.5
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C)
1.6
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D)
1.67
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question_answer 38) Which of the following is not a unit of charge?
A)
Faraday
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B)
Frankline
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C)
Coulomb
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D)
Ampere/second
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question_answer 39) What is maximum height of a stone thrown vertically upward, if its velocity is halved in 1.5s? \[(g=10m/{{s}^{2}})\]
A)
20m
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B)
25m
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C)
30m
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D)
45m
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question_answer 40) In the Boolean algebra A B is same as
A)
\[\overline{A+B}\]
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B)
\[A.B\]
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C)
\[\overline{A.B}\]
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D)
\[A+B\]
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question_answer 41) Elements having the same number of nucleons and different number of protons are
A)
isotones
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B)
positrons
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C)
isotopes
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D)
isobars
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question_answer 42) Acetic acid exists in benzene solution in the dimeric form. In an actual experiment the vant Hoff factor was found to be 0.52. Then the degree of dissociation of acetic acid is
A)
0.48
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B)
0.88
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C)
0.96
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D)
0.52
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question_answer 43) The number of d-electron in\[F{{e}^{2+}}\](at. no. of \[Fe=26\]) is not equal to that of the
A)
p-electrons in Ne (at. no. =10)
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B)
s-electrons in Mg (at. no. =12)
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C)
d-electrons in Fe
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D)
p-electrons in\[C{{l}^{-}}\]
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question_answer 44) How many number of atoms are there in a cube based unit cell having one atom on each comer and two atoms on each body diagonal of cube?
A)
8
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B)
6
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C)
4
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D)
9
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question_answer 45) Which of the following substances has the highest melting point?
A)
\[NaCl\]
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B)
\[KCl\]
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C)
\[MgO\]
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D)
\[BaO\]
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question_answer 46) Of the following reactions, only one is a redox reaction identify it.
A)
\[Ca{{(OH)}_{2}}+2HCl\xrightarrow[{}]{{}}CaC{{l}_{2}}+2{{H}_{2}}O\]
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B)
\[BaC{{l}_{2}}+MgS{{O}_{4}}\xrightarrow[{}]{{}}BaS{{O}_{4}}+MgC{{l}_{2}}\]
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C)
\[2{{S}_{2}}O_{7}^{2-}+{{H}_{2}}O\xrightarrow[{}]{{}}4SO_{4}^{2-}+4{{H}^{+}}\]
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D)
\[C{{u}_{2}}S+2FeO\xrightarrow[{}]{{}}2Cu+2Fe+S{{O}_{2}}\]
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question_answer 47) The Nemst equation giving dependence of electrode potential on concentration is
A)
\[E=E{}^\circ +\frac{2.303RT}{nF}\log \frac{[M]}{[{{M}^{n+}}]}\]
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B)
\[E=E{}^\circ +\frac{2.303RT}{nF}\log \frac{[{{M}^{n+}}]}{[M]}\]
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C)
\[E=E{}^\circ -\frac{2.303F}{nRT}\log \frac{[{{M}^{n+}}]}{[M]}\]
done
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D)
\[E=E{}^\circ -\frac{2.303RT}{nF}\log [{{M}^{n+}}]\]
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question_answer 48) At high pressures, the compressibility factor\[z\]is equal to
A)
unity
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B)
\[1-\frac{Pb}{RT}\]
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C)
\[1+\frac{Pb}{RT}\]
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D)
zero
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question_answer 49) A compound contains 69.5% oxygen and 30.5% nitrogen and its molecular weight is 92. The formula of the compound is
A)
\[{{N}_{2}}O\]
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B)
\[N{{O}_{2}}\]
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C)
\[{{N}_{2}}{{O}_{4}}\]
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D)
\[{{N}_{2}}{{O}_{5}}\]
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question_answer 50) The reaction\[A\xrightarrow[{}]{{}}B\]follows first order kinetics. The time taken for 0.8 mole of A to produce 0.6 mole of B is 1 h. What is the time taken for conversion of 0.9 mole of A to produce 0.675 mole of B?
A)
1 h
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B)
0.5 h
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C)
0.25 h
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D)
2h
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question_answer 51) Which order for ionisation energy is correct?
A)
\[Be<B<C<N<O\]
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B)
\[B<Be<C<O<N\]
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C)
\[Be>B>C>N>O\]
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D)
\[B<Be<N<C<O\]
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question_answer 52) How many grams of\[Ca{{C}_{2}}{{O}_{4}}\] will dissolve in distilled water to make one litre of saturated solution of it? (\[{{K}_{sp}}\] for\[Ca{{C}_{2}}{{O}_{4}}=2.5\times {{10}^{-9}}mo{{l}^{2}}{{L}^{-2}}\])
A)
0.0064 g
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B)
0.1028 g
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C)
0.1280 g
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D)
0.2056 g
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question_answer 53) In the extraction of copper from its sulphide ore, the metal is formed by reduction of \[C{{u}_{2}}O\]with
A)
\[FeS\]
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B)
CO
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C)
\[C{{u}_{2}}S\]
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D)
\[S{{O}_{2}}\]
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question_answer 54) Which one of the following substances has the highest proton affinity?
A)
\[{{H}_{2}}S\]
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B)
\[N{{H}_{3}}\]
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C)
\[P{{H}_{3}}\]
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D)
\[{{H}_{2}}O\]
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question_answer 55) 1.520 g of the hydroxide of a metal on ignition gave 0.995 g of oxide. The equivalent weight of metal is
A)
1.520
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B)
0.995
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C)
19.00
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D)
9.00
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question_answer 56) Thermite is a mixture of
A)
Fe and\[Al\]
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B)
ferric oxide and aluminium powder
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C)
barium peroxide and magnesium powder
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D)
\[Cu\]and\[Al\]
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question_answer 57) A molecule\[X{{Y}_{2}}\]contains two a, two n bonds and one lone pair of electron in the valence shell of X. The arrangement of lone pair as well as bond pairs is
A)
square pyramidal
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B)
linear
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C)
trigonal planar
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D)
unpredictable
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question_answer 58) The maximum oxidation state exhibited by manganese (at. no. = 25) is
A)
+3
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B)
+4
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C)
+6
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D)
+7
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question_answer 59) Which of the following is a disaccharide?
A)
Cellobiose
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B)
Starch
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C)
Cellulose
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D)
Fructose
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question_answer 60) In the reaction of p-chlorotoluene with\[KN{{H}_{2}}\]in liq\[N{{H}_{3}},\]the major product is
A)
o-toluidine
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B)
m-toluidine
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C)
p-toluidine
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D)
p-chloroaniline
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question_answer 61) . Unstable substances exhibit higher radioactivity due to
A)
low p/n ratio
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B)
high p/n ratio
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C)
\[p/n=1\]
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D)
none of these
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question_answer 62) The pH of a dilute solution of acetic acid was found to be 4.3. The addition of a small crystal of sodium acetate will cause pH to
A)
become less than 4.3
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B)
become more than 4.3
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C)
remain equal to 4.3
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D)
unpredictable
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question_answer 63) Which of the following is paramagnetic?
A)
\[N{{H}_{2}}OH\]
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B)
\[{{N}_{2}}{{O}_{3}}\]
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C)
\[N{{O}_{2}}\]
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D)
\[{{N}_{2}}{{H}_{6}}C{{l}_{2}}\]
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question_answer 64) Sugar containing an impurity of common salt can be purified by crystallization from
A)
benzene
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B)
alcohol
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C)
petroleum ether
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D)
water
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question_answer 65) The\[C-H\]and\[C-C\]bond distance are shortest in
A)
methane
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B)
ethane
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C)
ethene
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D)
ethyne
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question_answer 66) Among the following identify the species with an atom in +6 oxidation state
A)
\[MnO_{4}^{-}\]
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B)
\[Cr(CN)_{6}^{3-}\]
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C)
\[NiF_{6}^{2-}\]
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D)
\[Cr{{O}_{2}}C{{l}_{2}}\]
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question_answer 67) Which of the following can effectively remove all types of hardness of water?
A)
Washing soda
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B)
Soap
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C)
Slaked lime
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D)
Boiling
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question_answer 68)
The increasing order of dehydration of following is
A)
\[I<II<II<IV\]
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B)
\[II<III<IV<I\]
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C)
\[I<III<II<IV\]
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D)
\[I<IV<II<III\]
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question_answer 69) The solution of Na in dry ether not only contains\[Na_{slov.}^{+}\]and\[e_{slov.}^{-}\]but also contains \[Na_{slov.}^{-}\]formed by the following disproportionatipn reaction. \[2Na(s)Na_{solv.}^{+}+Na_{solv.}^{-}\] The large sodide ion can be stabilized by making its
A)
cryptand-222
done
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B)
clatherate
done
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C)
complex with saticylaldehyde
done
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D)
complex with acetylacetone
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question_answer 70) The electronic configurations of the elements X, Y, Z and J are given below. Which element has the highest metallic character?
A)
\[X=2,8,4\]
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B)
\[Y=2,8,8\]
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C)
\[Z=2,8,8,1\]
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D)
\[J=2,8,8,7\]
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question_answer 71) Aniline reacts with\[NaN{{O}_{2}}\]and\[HCl\]at room temperature to give
A)
nitroaniline
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B)
phenol
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C)
chloroaniline
done
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D)
diazonium chloride
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question_answer 72) Which of the following is least soluble in water?
A)
HCHO
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B)
\[C{{H}_{3}}CHO\]
done
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C)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
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D)
\[{{C}_{6}}{{H}_{5}}COC{{H}_{3}}\]
done
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question_answer 73) In the reaction \[C{{H}_{3}}CHO+HCN\xrightarrow[{}]{{}}C{{H}_{3}}CH(OH)CN\] A chiral centre is produced. This product would be
A)
laevo-rotatory
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B)
meso-compound
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C)
dextro-rotatory
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D)
racemic mixture
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question_answer 74) Which of the following is a primary standard in volumetric analysis?
A)
\[FeS{{O}_{4}}\]
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B)
\[FeS{{O}_{4}}{{(N{{H}_{4}})}_{2}}S{{O}_{4}}6{{H}_{2}}O\]
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C)
\[NaOH\]
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D)
\[HCl\]
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question_answer 75) In case of halides of\[S,Se,Te\]and\[Po,\]as the size of the halogen increases, the maximum coordination number of the element
A)
decreases
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B)
increases
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C)
remains unaffected
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D)
none of the above
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question_answer 76) Which of the following has highest dipole moment?
A)
1,1-dichloroethene
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B)
cis-1, 2-dichloroethene
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C)
trans-1, 2-dichloroethene
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D)
All have same dipole moment
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question_answer 77) Presence of peroxides in old stocks of ethers can be tested by first treating them with\[F{{e}^{2+}}\]ions and then adding an aqueous solution of
A)
\[KCNS\]
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B)
\[HgC{{l}_{2}}\]
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C)
\[SnC{{l}_{2}}\]
done
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D)
\[KI\]
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question_answer 78) The decay constant of\[^{226}Ra\]is\[1.36\times {{10}^{-11}}{{s}^{-1}}\]. A sample of Ra- 226, having an activity of 1.5 \[mCi\]will contain
A)
\[4.0\times {{10}^{18}}atoms\]
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B)
\[205\times {{10}^{15}}atoms\]
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C)
\[3.5\times {{10}^{7}}atoms\]
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D)
\[4.7\times {{10}^{10}}atoms\]
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question_answer 79) Ammonia is obtained by the action of\[{{H}_{2}}O\]on
A)
\[CaC{{N}_{2}}\]
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B)
\[M{{g}_{3}}{{N}_{2}}\]
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C)
BN
done
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D)
all of these
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question_answer 80) Give the IUPAC name of the following \[C{{H}_{3}}\overset{\begin{smallmatrix} S \\ |\,\,| \end{smallmatrix}}{\mathop{C}}\,C{{H}_{2}}COOH\]is
A)
3-thiabutanoic acid
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B)
3-sulphobutanoic acid
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C)
3-thiobutanoic acid
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D)
3-thioxobutanoic acid
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question_answer 81) An alcohol on treatment with alkaline \[KMn{{O}_{4}}\]gives a brown precipitate, the alcohol is
A)
\[{{(C{{H}_{3}})}_{3}}COH\]
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B)
\[{{({{C}_{2}}{{H}_{5}})}_{3}}COH\]
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C)
\[{{({{C}_{2}}{{H}_{5}})}_{2}}C(C{{H}_{3}})OH\]
done
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D)
\[{{(C{{H}_{3}})}_{3}}CC{{H}_{2}}OH\]
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question_answer 82) The compound, which on reaction with aqueous nitrous acid at low temperature, produces an oily nitrosoamine is
A)
diethylamine
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B)
ethylamine
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C)
aniline
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D)
methylamine
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question_answer 83) \[[Ag{{(N{{H}_{3}})}_{2}}OH]\]liberates silver when it reacts with
A)
\[HCOOH\]
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B)
\[C{{H}_{3}}COOH\]
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C)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
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D)
\[C{{H}_{3}}OH\]
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question_answer 84) Methyl n-propyl ketone on oxidation with \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] and\[{{H}_{2}}S{{O}_{4}}\] give mainly
A)
\[C{{H}_{3}}C{{H}_{2}}COOH+C{{H}_{3}}COOH\]
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B)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOH+HCOOH\]
done
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C)
\[C{{H}_{3}}COOH+HCOOH\]
done
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D)
\[C{{H}_{3}}C{{H}_{2}}COOH+C{{O}_{2}}+{{H}_{2}}O\]
done
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View Answer play_arrow
question_answer 85) If\[KMn{{O}_{4}}\]is reduced by oxalic acid in an acidic medium, then oxidation number of Mn changes from
A)
4 to 2
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B)
6 to 4
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C)
+7 to +2
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D)
7 to 4
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question_answer 86) 0.01 M solution of\[{{H}_{2}}A\]has pH equal to 4, if \[{{K}_{{{a}_{1}}}}\]for the acid is\[4.45\times {{10}^{-7}},\]the concentration of\[H{{A}^{-}}\]ion in solution would be
A)
0.01 N
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B)
\[4.45\times {{10}^{-5}}\]
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C)
\[8.0\times {{10}^{-5}}\]
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D)
unpredictable
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question_answer 87) The percentage by weight of hydrogen in\[{{H}_{2}}{{O}_{2}}\]is
A)
5.88
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B)
6.25
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C)
25
done
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D)
50
done
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question_answer 88) A gas has a characteristic fishy odour and blue colour. It restores the colour of blackened lead paintings. It also bleaches in the absence of moisture. The gas is
A)
\[{{O}_{2}}\]
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B)
\[S{{O}_{2}}\]
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C)
\[C{{l}_{2}}\]
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D)
\[{{O}_{3}}\]
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question_answer 89) A neutral compound with molecular formula \[{{C}_{3}}{{H}_{8}}O\]evolves\[{{H}_{2}}\]when treated with sodium metal and gives iodoform test. The compound is
A)
\[{{(C{{H}_{3}})}_{2}}CHOH\]
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B)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\]
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C)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
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D)
\[C{{H}_{3}}C{{H}_{2}}CHO\]
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question_answer 90) In second group,\[{{H}_{2}}S\]is passed in the presence of dil.\[HCl\]because
A)
\[HCl\]checks incomplete precipitation of higher group radicals
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B)
\[HCl\]checks precipitation of sulphur
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C)
both [a] and [b]
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D)
none of the above
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question_answer 91) The rate of reaction of which of the following is not affected by pressure?
A)
\[PC{{l}_{3}}+C{{l}_{2}}\rightleftharpoons PC{{l}_{5}}\]
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B)
\[{{N}_{2}}+3{{H}_{2}}\rightleftharpoons 2N{{H}_{3}}\]
done
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C)
\[{{N}_{2}}+{{O}_{2}}\rightleftharpoons 2NO\]
done
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D)
\[S{{O}_{2}}+{{O}_{2}}\rightleftharpoons 2S{{O}_{3}}\]
done
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question_answer 92) Acidic buffer solution is produced on mixing the following aqueous solutions of
A)
\[N{{H}_{4}}Cl+N{{H}_{4}}OH\]
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B)
\[C{{H}_{3}}COONa+C{{H}_{3}}COOH\]
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C)
\[NaCl+NaOH\]
done
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D)
\[N{{a}_{2}}S{{O}_{4}}+{{H}_{2}}S{{O}_{4}}\]
done
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question_answer 93) For an ideal gas, Joule-Thomson coefficient is
A)
zero
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B)
negative
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C)
positive
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D)
depend on molecular weight
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question_answer 94) Benzene on oxidation with\[{{V}_{2}}{{O}_{5}}\]produce
A)
toluene
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B)
benzaldehyde
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C)
maleic anhydride
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D)
benzophenone
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question_answer 95) The linkage present in proteins and peptides is
A)
\[-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-\]
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B)
\[-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-O-O-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-\]
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C)
\[-NH-\]
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D)
\[-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-NH\]
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question_answer 96) \[RCOCl+{{H}_{2}}\xrightarrow[{}]{Pd/BaS{{O}_{4}}}RCHO+HCl\] This reaction is known as
A)
Rosenmunds reaction
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B)
Stephens reaction
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C)
Meerwein Ponndorf verley reduction
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D)
Clemmensens reduction
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question_answer 97) Starch is a polymer of
A)
glucose
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B)
fructose
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C)
both [a] and [b]
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D)
none of these
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question_answer 98) Ferric alum has the composition \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}.F{{e}_{2}}{{(S{{O}_{4}})}_{3}}.x{{H}_{2}}O\] The value of\[x\]is
A)
7
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B)
24
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C)
6
done
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D)
25
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question_answer 99) The use of plaster of Paris is in
A)
whitewash
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B)
toothpaste
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C)
black board chalk
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D)
surgery and dentistry
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question_answer 100) Nesslers reagent is used for the test of
A)
\[CrO_{4}^{2-}\]
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B)
\[MnO_{4}^{-}\]
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C)
\[NH_{4}^{+}\]
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D)
\[PO_{4}^{3-}\]
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question_answer 101) The book Genera plantarum was written by
A)
Bessey
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B)
Hutchinson
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C)
Engler and Pranti
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D)
Bentham and Hooker
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question_answer 102) Which of the following is not a true fish?
A)
Dog fish
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B)
Devil fish
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C)
Catfish
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D)
Sawfish
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question_answer 103) During mitosis, the number of chromosomes get
A)
change
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B)
no change
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C)
may be change if cell is mature
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D)
may be change if cell is immature
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question_answer 104) During transcription, the DNA site at which RNA polymerase binds is called
A)
promoter
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B)
regulator
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C)
receptor
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D)
enhancer
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question_answer 105) Bacteria do not possess
A)
capsule
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B)
ribosome
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C)
mitochondria
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D)
plasma membrane
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question_answer 106) Thermal cycler is used in this reaction
A)
radioactivity
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B)
enzyme catalysed
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C)
chemical reactions
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D)
PCR
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question_answer 107) Sporozoite, infectious stage of Plasmodium parasite contains
A)
two nucleus and a vacuole
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B)
one nucleus and several vacuoles
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C)
vacuoles and chloroplasts
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D)
a nucleus
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question_answer 108) The shape of chromosome is determined by
A)
centrosome
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B)
centromere
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C)
chromomere
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D)
telomere
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question_answer 109) Heteroneries stage is
A)
transformation of sexual individual into asexual
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B)
sexually matured with two regions atoke and epitoke
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C)
sexually immatured with two regions etoke and epitoke
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D)
all of the above
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question_answer 110) In Funaria, calyptra is derived from
A)
capsule
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B)
columella
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C)
antheridium
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D)
archegonium
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question_answer 111) Biologically most resistant plant material is
A)
lignin
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B)
cutin
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C)
suberin
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D)
sporopollenin
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question_answer 112) Which of the following techniques other than microscopy is used for the study of cell ?
A)
Plasmolysis
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B)
Maceration
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C)
Chromatography
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D)
Auto-radiography
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question_answer 113) Earthworms have no special sense organs. Still they are sensitive to
A)
touch and sound
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B)
light and sound
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C)
touch, taste and sound
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D)
touch, taste and light
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question_answer 114) What will be the gametic chromosome number in a cell, if somatic cells have 40 chromosomes ?
A)
10
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B)
20
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C)
30
done
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D)
40
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question_answer 115) The ATP production in photosynthesis is called
A)
phototropism
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B)
phosphorylation
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C)
photooxidation
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D)
photophosphorylation
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question_answer 116) Duramen of heart wood is
A)
region of pericycle
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B)
another name of cambium
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C)
inner region of secondary wood
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D)
outer region of secondary wood
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question_answer 117) The term heterosis was first used by
A)
Shull
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B)
NEBorlaug
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C)
MS Swaminathan
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D)
RMishra
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question_answer 118) The larva of Bombyx mori is
A)
cocoon
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B)
nymph
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C)
caterpillar
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D)
trochophore
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question_answer 119) Gemmule formation in sponges is helpful in
A)
sexual reproduction
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B)
asexual reproduction
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C)
only dissemination
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D)
none of the above
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question_answer 120) Organs not similar in structure and origin but perform the same function
A)
homologous structures
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B)
analogous structures
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C)
adaptive structures
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D)
variable structures
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question_answer 121) In Dryopteris, the opening mechanism of sporangium is effectively operated by
A)
stalk
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B)
annulus
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C)
stomium
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D)
peristome
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question_answer 122) Tunica corpus theory is used for
A)
shoot apex
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B)
root apex
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C)
leaf apex
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D)
both [a] and [b]
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question_answer 123) The part of earth and atmosphere supporting life is
A)
biota
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B)
biome
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C)
ecotone
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D)
biosphere
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question_answer 124) Lendcels and hydathodes are small pores with which of the following common attributes?
A)
They allow exchange of gases
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B)
Their opening and closing is not regulated
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C)
They always remain closed
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D)
They are found on the same organ of plants
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question_answer 125) Chloragogen cells of earthworms are analogous to vertebrate
A)
lungs
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B)
liver
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C)
gut
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D)
kidney
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question_answer 126) Change in one base in mRNA leading to termination of polypeptide is known as which type of mutations?
A)
Sense
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B)
None-sense
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C)
Gibberish
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D)
Framshift
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question_answer 127) Taenia solium derives its energy from the breakdown of
A)
nucleic acids
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B)
amino acids
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C)
glycogen
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D)
glycerol
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question_answer 128) Which of the following hormone is produced during leaf fall ?
A)
ABA
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B)
Cytokinin
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C)
Florigen
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D)
Vernalin
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question_answer 129) Which fish selectively feed on larva of mosquito?
A)
Gambusia
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B)
Rohu
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C)
Glorias
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D)
Exocoetus
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question_answer 130) Lomentum is a term used to describe a kind of
A)
fruit
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B)
seed
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C)
inflorescence
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D)
outgrowth from seed
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question_answer 131) House-fly possesses
A)
two pairs of wings
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B)
one pair of wings
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C)
three pairs of wings
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D)
none of the above
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question_answer 132) Sunken stomata are found in
A)
Nerium
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B)
Hydrilla
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C)
mango
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D)
none of these
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question_answer 133) Which Fish has an electric organ?
A)
Torpedo
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B)
Rhinoceros
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C)
Scoliodon
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D)
Cat fish
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question_answer 134) Three most abundant elements in protoplasm are
A)
carbon, sodium and hydrogen
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B)
carbon, hydrogen and \[{{O}_{2}}\]
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C)
nitrogen, carbon and \[{{O}_{2}}\]
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D)
carbon, phosphorus and oxygen
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question_answer 135) Genetically engineered bacteria is used for the production of
A)
thyroxin
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B)
human insulin
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C)
epinephrine
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D)
cortisol
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question_answer 136) Inulin is a
A)
lipid
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B)
protein
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C)
human insulin
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D)
polysaccharide
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question_answer 137) Jumping genes in maize were discovered by
A)
Hugo de Vries
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B)
TH Morgan
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C)
Barbara McClintock
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D)
Mendel
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question_answer 138) Which of the following is not a pentose sugar?
A)
arabinose
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B)
xylose
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C)
xylulose
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D)
mannose
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question_answer 139) Nucleolus is the site for the synthesis of
A)
DNA
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B)
mRNA
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C)
tRNA
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D)
ribosomes
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question_answer 140) Which of the following statement is not true ?
A)
Animal cells never contain chloroplast unlike many plant cells
done
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B)
Animal cells contain ultrascopic chloroplast while plant cells contain microscopic chloroplast
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C)
Plant cells have cellulosic cell wall while animal cells do not
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D)
Plant cells have central vacuoles while animal-cells do not
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question_answer 141) Which of the following factor controls the human population density ?
A)
Industry
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B)
Climate
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C)
Communication
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D)
Natural resources
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question_answer 142) Chromosomal aberration is due to
A)
aneuploidy
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B)
polyploidy
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C)
physical effects
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D)
all of these
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question_answer 143) What used to described as Nissi granules in a nerve cell are now identified as
A)
cell metabolites
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B)
fat granules
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C)
ribosomes
done
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D)
mitochondria
done
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question_answer 144) Ageing of an animal body is associated with deterioration in its
A)
connective tissue
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B)
glandular tissue
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C)
epithelial tissue
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D)
both [a] and [b]
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question_answer 145) Photochemical smog always contains
A)
\[{{O}_{3}}\]
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B)
\[C{{H}_{4}}\]
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C)
\[CO\]
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D)
\[\text{P}{{\text{O}}_{\text{4}}}\]
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question_answer 146) The posterior end of Ancylostoma has
A)
anus
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B)
curved tail
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C)
bursa
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D)
caudal spine
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question_answer 147) Quantasomes are found in
A)
mitochondria
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B)
chloroplast
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C)
lysosome
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D)
endoplasmic reticulum
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question_answer 148) In Pinus, male cone bears a large number of
A)
ligules
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B)
anthers
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C)
microsporophylls
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D)
megasporophylls
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question_answer 149) Hydroponics is a
A)
airless culture
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B)
waterless culture
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C)
soilless culture
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D)
none of these
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question_answer 150) Lysosomes are formed by
A)
endoplasmic reticulum
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B)
mitochondrion
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C)
Golgi membrane
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D)
both [a] and [c]
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question_answer 151) Nissls granules are characteristic of
A)
muscle tissue
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B)
connective tissue
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C)
nerve tissue
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D)
epithelial tissue
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question_answer 152) Gastric vacuoles are analogous to the
A)
peroxisomes
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B)
alimentary canal of higher animals
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C)
mouth of higher animals
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D)
liver of higher animals
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question_answer 153) Genetic information is carried by long chain macromolecules made up of
A)
amino acids
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B)
nucleotides
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C)
chromosomes
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D)
enzymes
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question_answer 154) Fertilization of ovum in human being occur in
A)
fallopian tube
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B)
cervix
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C)
fundus
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D)
all of these
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question_answer 155) Which one are correctely matched?
A)
Vitamin-E-tocopherol
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B)
Vitamin-D-riboflavin
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C)
Vitamin-B-calciferol
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D)
Vitamin-A-thiamine
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question_answer 156) Believers in spontaneous generation theory assumed that
A)
organisms arose only from other similar organisms
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B)
organisms could arise only from air
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C)
organisms arose-from non-living material
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D)
organisms always arise from air
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question_answer 157) Half-life period of \[{{C}^{14}}\]is
A)
500 years
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B)
5000 years
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C)
50 years
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D)
\[5\times {{10}^{4}}years\]
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question_answer 158) Maximum number of plasmids discovered so far
A)
50 kilo base
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B)
500 kilo base
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C)
5000 kilo base
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D)
5 kilo base
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question_answer 159) The lytic enzymes released by sperm is
A)
acrosome
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B)
ligase
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C)
androgamone
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D)
hyaluronidase
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question_answer 160) Transfer of genes from one gene pool to another is called
A)
speciation
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B)
genetic drift
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C)
gene flow
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D)
mutation
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question_answer 161) A material which arrests cell division, is obtained from
A)
Crocus
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B)
Colchicum
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C)
Dalbergia
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D)
Chrysanthemum
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question_answer 162) Chromosomes in a bacterial cell can be 1-3 in number and
A)
are always circular
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B)
are always linear
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C)
can be either circular or linear, but never both within the same cell
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D)
can be circular as well as linear within the same cell
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question_answer 163) Example of an aggregate fruit is
A)
Pyrus mains
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B)
Ananas sarivus
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C)
Annona squamosal
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D)
Arcocarpiis integrifolia
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question_answer 164) Identify the edible freshwater teleosts
A)
sharks
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B)
rays and skates
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C)
Hilsa hilsa
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D)
Catla catla
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question_answer 165) The blood cell which shows phagocytosis is
A)
monocyte
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B)
barsophil
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C)
eosinophil
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D)
platelets
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question_answer 166) In angiosperms, which of the following part is triploid ?
A)
Zygote
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B)
Endosperm
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C)
Archegonia
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D)
Coralloid root
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question_answer 167) Mitochondria are often seen aggregated around
A)
food vacuole
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B)
contractile vacuole
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C)
water vacuole
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D)
all of these
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question_answer 168) Addisons disease results from
A)
hypertrophy of gonad
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B)
hyposecretion of adrenal cortex
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C)
hyperactivity of leydig cells
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D)
none of the above
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question_answer 169) Main difference between active and passive transport across cell membrane is that
A)
active transport occurs more rapidly than passive
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B)
passive transport is non-selective
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C)
passive transport is confined to anions and cations
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D)
passive transport requires a concentration gradient across the membrane, whereas active transport requires metabolic energy
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question_answer 170) Which statement is correct for muscle- contraction ?
A)
Length of H zone decreases
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B)
Length of A band decreases
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C)
Length of I band remain constant
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D)
Length of two Z line increases
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question_answer 171) Aleurone layer helps in
A)
growth
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B)
nutrition
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C)
protection
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D)
water absorption
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question_answer 172) Internal cork disease in apple is due to the deficiency of
A)
iron
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B)
copper
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C)
boron
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D)
phosphorus
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question_answer 173) When an animal turns sideways to the Sun to get the maximum amount of Sun on its flanks, this is an example of:
A)
motivation
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B)
habitation
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C)
posture
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D)
orientation
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question_answer 174) The main components of plasma membrane are
A)
lipids and proteins
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B)
lipids, proteins and carbohydrates
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C)
lipids only
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D)
proteins only
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question_answer 175) Pollination by insects is called
A)
zoophily
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B)
chiropterophily
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C)
anemophily
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D)
entomophily
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question_answer 176) The genetic material in \[\phi \times 174\] is
A)
single stranded DNA
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B)
single stranded RNA
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C)
double stranded DNA
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D)
double stranded RNA
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question_answer 177) The pH of stomach ranges between
A)
7.1 to 8.2
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B)
7.6 to 8.6
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C)
1.5 to 2.0
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D)
6.8 to 7.2
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question_answer 178) Removal of ring wood of tissue outside the vascular cambium from the tree trunk kills it because
A)
water cannot move up
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B)
food does not travel down and roots become starved
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C)
shoot become starved
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D)
annual ring are not produced
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question_answer 179) The high amount of E. coli in water is an indicator of
A)
hardness of water
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B)
industrial pollution
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C)
sewage pollution
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D)
presence of chlorine in water
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question_answer 180) Which of the following connects glycolysis to Krebs cycle?
A)
Acetyl Co-A
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B)
Ribozyme
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C)
Cytochrome oxidase
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D)
N-acetyl glucosamine
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question_answer 181) Which of the following theory explain structure of protoplasm?
A)
Surface tension theory
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B)
Colloidal theory
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C)
Sol-gel theory
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D)
Viscosity theory
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question_answer 182) An insect without metamorphosis is
A)
silver Fish
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B)
cray fish
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C)
bedbug
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D)
pediculus
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question_answer 183) Lichens show
A)
mutualism
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B)
commensalism
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C)
parasitism
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D)
saprophytism
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question_answer 184) In which of the following animal anal tail is found?
A)
Earthworm
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B)
Lower invertebrates
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C)
Scorpion
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D)
Snake
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question_answer 185) Which of the following statements is true
A)
All enzymes are proteins
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B)
All proteins are enzymes
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C)
All enzymes are not proteins
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D)
All enzymes and hormones are proteins
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question_answer 186) This is not the cell of areolar tissue
A)
macrophages
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B)
Schwann cell
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C)
plasma cell
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D)
adipose cell
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question_answer 187) Anaerobic respiration after glycolysis is called
A)
restoration
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B)
fermentation
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C)
multiplication
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D)
fragmentation
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question_answer 188) Portuguese man of war is
A)
Obelia
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B)
Pennatula
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C)
Coral
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D)
Physalia
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question_answer 189) In photosynthesis, photolysis of water is useful for
A)
reduction of NADP
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B)
oxidation of NADP
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C)
oxidation of FAD
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D)
none of the above
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question_answer 190) Liquid food drinking is
A)
imbibition
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B)
pinocytosis
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C)
phagocytosis
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D)
none of these
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question_answer 191) Terminating codons are also called
A)
initiating codons
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B)
stop signals
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C)
central dogma
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D)
none of these
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question_answer 192) A pome fruit is said to be false because
A)
the pericarp is inconspicuous
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B)
the endocarp is cartilagenous
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C)
fruit is derived from superior ovary
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D)
fruit is present in fleshy edible thalamus
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question_answer 193) In photosynthesis, the light energy is utilized in
A)
converting \[ATP\] into \[ADP\]
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B)
converting \[\text{C}{{\text{H}}_{\text{3}}}\] into \[{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}\text{OH}\]
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C)
converting \[\text{ADP}\] into \[\text{ATP}\]
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D)
converting \[\text{C}{{\text{O}}_{\text{2}}}\] into carbohydrate
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question_answer 194) Receptors of sensation produced when a person eats red chillies are located on which part of tongue ?
A)
Tip
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B)
Base
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C)
Side
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D)
None of these
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question_answer 195) In which of the following haemocyanin pigment is found ?
A)
Annelida
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B)
Echinodermata
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C)
Insects
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D)
Lower invertebrates
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question_answer 196) Photosystem-II occurs in
A)
grana
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B)
stroma
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C)
entire chloroplast.
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D)
chloroplast membrane
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question_answer 197) When a cluster of genes show linkage behaviour they
A)
do not show a chromosome map
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B)
show recombination during meiosis
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C)
do not show independent assortment
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D)
induce cell division
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question_answer 198) What is the function of centrosome ?
A)
Cell division
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B)
Cell plate formation
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C)
Cell differentiation
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D)
Cell wall formation
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question_answer 199) Keratinization of the skin is prevented by
A)
vitamin-A
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B)
vitamin-B
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C)
vitamin-C
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D)
vitamin-D
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question_answer 200) Christmas disease is another name for
A)
haemophilia-B
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B)
hepatitis-B
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C)
Downs syndrome
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D)
sleeping sickness
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