question_answer 1) A bar magnet is oscillating in the earth's magnetic field with a period T. What happens to its period and motion if its mass is quadrupled?
A)
Motion remains SH with time period = 4T
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B)
Motion remains SH and period remains nearly constant
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C)
Motion remains SH with time period\[=\frac{T}{2}\]
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D)
Motion remains SH with time period\[=2T\]
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question_answer 2) A charged particle moves through a magnetic field in a direction perpendicular to it. Then the
A)
acceleration remains unchanged
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B)
velocity remains unchanged
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C)
speed of the particle remains unchanged
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D)
direction of the particle remains unchanged
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question_answer 3) A man weighs 80 kg. He stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of\[5\text{ }m/{{s}^{2}}\]. What would be the reading on the scale?\[(g=10m/{{s}^{2}})\]
A)
800 N
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B)
1200 N
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C)
zero
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D)
400 N
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question_answer 4) Which of the following units denotes the dimensions\[[M{{L}^{2}}/{{Q}^{2}}],\]where Q denotes the electric charge?
A)
\[Wb/{{m}^{2}}\]
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B)
Henry (H)
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C)
\[H/{{m}^{2}}\]
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D)
Weber (Wb)
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question_answer 5) The vector sum of two forces is perpendicular to their vector difference. In that case, the forces
A)
are not equal to each other in magnitude
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B)
cannot be predicted
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C)
are equal to each other
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D)
are equal to each other in magnitude
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question_answer 6) A ball rolls without slipping. The radius of gyration of the ball about an axis passing through its centre of mass is K. If radius of the ball be R, then the fraction of total energy associated with its rotational energy will be
A)
\[\frac{{{K}^{2}}}{{{K}^{2}}+{{R}^{2}}}\]
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B)
\[\frac{{{R}^{2}}}{{{K}^{2}}+{{R}^{2}}}\]
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C)
\[\frac{{{K}^{2}}+{{R}^{2}}}{{{R}^{2}}}\]
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D)
\[\frac{{{K}^{2}}}{{{R}^{2}}}\]
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question_answer 7) The acceleration due to gravity on the planet A is 9 times the acceleration due to gravity on planet B. A man jumps to a height of 2 m on the surface of A. What is the height of jump by the same person on the planet B?
A)
6 m
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B)
2/3 m
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C)
2/9 m
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D)
18 m
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question_answer 8) When a long spring is stretched by 2 cm, its potential energy is U. If the spring is stretched by 10 cm, the potential energy in it will be
A)
10 U
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B)
25 U
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C)
U/5
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D)
5U
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question_answer 9) An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius r. The Coulomb force \[\overrightarrow{F}\]between the two is
A)
\[k\frac{{{e}^{2}}}{{{r}^{3}}}\overrightarrow{r}\]
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B)
\[-k\frac{{{e}^{2}}}{{{r}^{3}}}\overrightarrow{r}\]
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C)
\[-k\frac{{{e}^{2}}}{{{r}^{2}}}\hat{r}\]
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D)
\[-k\frac{{{e}^{2}}}{{{r}^{3}}}\hat{r}\] (where\[k=\frac{1}{4\pi {{\varepsilon }_{0}}}\])
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question_answer 10) A charge q is located at the centre of a cube. The electric flux through any face is
A)
\[\frac{\pi q}{6(4\pi {{\varepsilon }_{0}})}\]
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B)
\[\frac{q}{6(4\pi {{\varepsilon }_{0}})}\]
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C)
\[\frac{2\pi q}{6(4\pi {{\varepsilon }_{0}})}\]
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D)
\[\frac{4\pi q}{6(4\pi {{\varepsilon }_{0}})}\]
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question_answer 11) An observer moves towards a stationary source of sound with a speed 1/5th of the speed of sound. The wavelength and frequency of the source emitted are\[\lambda \]and\[f\] respectively. The apparent frequency and wavelength recorded by the observer are respectively
A)
\[f,1.2\lambda \]
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B)
\[0.8f,0.8\lambda \]
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C)
\[1.2f,1.2\lambda \]
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D)
\[1.2f,\lambda \]
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question_answer 12) Consider a compound slab consisting of two different materials having equal thickness and thermal conductivities K and 2K respectively. The equivalent thermal conductivity of the slab is
A)
3K
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B)
\[\frac{4}{3}K\]
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C)
\[\frac{2}{3}K\]
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D)
\[\sqrt{2}K\]
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question_answer 13) Fuse wire is a wire of
A)
low resistance and low melting point
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B)
low resistance and high melting point
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C)
high resistance and high melting point
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D)
high resistance and low melting point
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question_answer 14) Solar energy is mainly caused due to
A)
fusion of protons during synthesis of heavier elements
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B)
gravitational contraction
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C)
burning of hydrogen in the oxygen
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D)
fission of uranium present in the sun
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question_answer 15)
An equiconvex lens is cut into two halves along (i)\[XOX'\]and (ii)\[YOY'\]as shown in the figure. Let\[f,f',f''\]be the focal lengths of the complete lens, of each half in case (i), and of each half in case (ii), respectively.
A)
\[f'=f,f''=f\]
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B)
\[f'=2f,f''=2f\]
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C)
\[f'=f,f''=2f\]
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D)
\[f'=2f,f''=f\]
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question_answer 16) A diamagnetic material in a magnetic field moves
A)
perpendicular to the field
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B)
from weaker to the stronger parts of the field
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C)
from stronger to the weaker parts of the field
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D)
in none of the above directions
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question_answer 17) A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens. Then its focal length will
A)
become small, but non-zero
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B)
remain unchanged
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C)
become zero
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D)
become infinite
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question_answer 18) \[\overrightarrow{A}\times \overrightarrow{B}=\overrightarrow{B}\times \overrightarrow{A},\]then the angle between A and B is
A)
\[\pi \]
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B)
\[\pi /3\]
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C)
\[\pi /2\]
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D)
\[\pi /4\]
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question_answer 19) Two spheres of masses m and M are situated in air and the gravitational force between them is F. The space around the masses is now filled with a liquid of specific gravity 3. The gravitational force will now be
A)
\[\frac{F}{3}\]
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B)
\[\frac{F}{9}\]
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C)
\[3F\]
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D)
\[F\]
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question_answer 20) The potential energy of a simple harmonic oscillator when the particle is half way to its end point is
A)
\[\frac{1}{4}E\]
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B)
\[\frac{1}{2}E\]
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C)
\[\frac{2}{3}E\]
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D)
\[\frac{1}{8}E3\] (where E is the total energy)
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question_answer 21) In case of a forced vibration, the resonance wave becomes very sharp when the
A)
applied periodic force is small
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B)
quality factor is small
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C)
damping force is small
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D)
restoring force is small
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question_answer 22) A stationary particle explodes into two particles of masses\[{{m}_{1}}\]and\[{{m}_{2}}\]which move in opposite directions with velocities\[{{v}_{1}}\]and\[{{v}_{2}}\]. The ratio of their kinetic energies\[{{E}_{1}}/{{E}_{2}}\]is
A)
1
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B)
\[{{m}_{1}}{{v}_{2}}/{{m}_{2}}{{v}_{1}}\]
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C)
\[{{m}_{2}}/{{m}_{1}}\]
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D)
\[{{m}_{1}}/{{m}_{2}}\]
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question_answer 23) An ideal gas heat engine operates in a Carnot cycle between\[227{}^\circ C\]and\[127{}^\circ C\]. It absorbs 6 kcal at the higher temperature. The amount of heat (in kcal) converted into work is equal to
A)
1.6
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B)
1.2
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C)
4.8
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D)
3.5
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question_answer 24) We consider the radiation emitted by the human body. Which of the following statements is true?
A)
The radiation is emitted during the summers and absorbed during the winters
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B)
The radiation emitted lies in the ultraviolet region and hence is not visible
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C)
The radiation emitted is in the infra-red region
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D)
The radiation is emitted only during the day
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question_answer 25) Three capacitors each of capacity\[4\mu F\]are to be connected in such a way that the effective capacitance is\[6\mu F\]. This can be done by
A)
connecting two in series and one in parallel
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B)
connecting two in parallel and one in series
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C)
connecting all of them in series
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D)
connecting all of them in parallel
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question_answer 26) In a Wheatstone's bridge all the four arms have equal resistance R. If the resistance of the galvanometer arm is also R, the equivalent resistance of the combination as seen by the battery is
A)
R
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B)
2R
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C)
\[\frac{R}{4}\]
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D)
\[\frac{R}{2}\]
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question_answer 27) A sample of radioactive element has a mass of 10 g at an instant r = 0. The approximate mass of this element in the sample after two mean lives is
A)
3.70 g
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B)
6.30 g
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C)
1.35 g
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D)
2.50 g
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question_answer 28) The volume occupied by an atom is greater than the volume of the nucleus by factor of about
A)
\[{{10}^{10}}\]
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B)
\[{{10}^{15}}\]
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C)
\[{{10}^{1}}\]
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D)
\[{{10}^{5}}\]
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question_answer 29) In electrolysis the mass deposited on an electrode is directly proportional to
A)
current
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B)
square of current
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C)
concentration of solution
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D)
inverse of current
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question_answer 30) The mass of proton is 1.0073 u and that of neutron is 1.0087 u (u = atomic mass unit). The binding energy of\[2H{{e}^{4}}\]is
A)
28.4 MeV
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B)
0.061 u
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C)
0.0305 J
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D)
0.0305 erg
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question_answer 31) Given, mass of helium nucleus w 4.0015 u. Barrier potential of a p-n junction diode does not depend on
A)
forward bias
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B)
doping density
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C)
diode design
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D)
temperature
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question_answer 32) Thomson's cathode-ray tube experiment demonstrated that
A)
the e/m of electrons is greater than the e/m of protons
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B)
the e/m ratio of the cathode-ray particles changes when a different gas is placed in the discharge tube
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C)
cathode rays are streams of negatively charged ions
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D)
all the mass of an atom is essentially in the nucleus
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question_answer 33) Which of the following parameters does not characterize the thermodynamic state of matter?
A)
Temperature
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B)
Pressure
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C)
Work
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D)
Volume
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question_answer 34) In which of the following systems will the radius of the first orbit (n = 1) be minimum?
A)
Deuterium atom
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B)
Hydrogen atom
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C)
Doubly ionized lithium
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D)
Singly ionized helium
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question_answer 35) A long solenoid carrying a current produces a magnetic field B along its axis. If the current is doubled and the number of turns per cm is halved, the new value of the magnetic field is
A)
2B
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B)
4B
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C)
B/2
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D)
B
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question_answer 36)
Following diagram performs the logic function of
A)
OR gate
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B)
AND gate
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C)
XOR gate
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D)
NAND gate
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question_answer 37) "Parsec" is the unit of
A)
time
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B)
distance
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C)
frequency
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D)
angular acceleration
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question_answer 38) Which of the following is an amorphous solid?
A)
Glass
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B)
Diamond
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C)
Salt
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D)
Sugar
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question_answer 39) A bread gives a boy of mass 40 kg an energy of 21 k-J. If the efficiency is 28%, then the height can be climbed by him using this energy, is
A)
22.5m
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B)
15m
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C)
10m
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D)
5m
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question_answer 40) The kinetic energy of 1 g molecule of a gas, at normal temperature and pressure is\[(R=8.31J/mol-K)\]
A)
\[3.4\times {{10}^{3}}J\]
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B)
\[2.97\times {{10}^{3}}J\]
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C)
\[1.2\times {{10}^{2}}J\]
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D)
\[0.66\times {{10}^{4}}J\]
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question_answer 41) Plate current will be maximum when
A)
both the grid and anode are negative
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B)
both the grid and anode are positive
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C)
grid is positive and anode is negative
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D)
grid is negative and anode is positive
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question_answer 42) For driving current of 2 A for 6 min in a circuit, 1000J of work is to be done. The emf of the source in the circuit is
A)
1.38V
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B)
1.68V
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C)
2.03V
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D)
3.10V
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question_answer 43) An iron rod of length 2 m and cross-sectional area of\[50\text{ }m{{m}^{2}}\]is stretched by 0.5 mm, when a mass of 250 kg is hung from its lower end. Young's modulus of iron rod is
A)
\[19.6\times {{10}^{20}}N/{{m}^{2}}\]
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B)
\[19.6\times {{10}^{18}}N/{{m}^{2}}\]
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C)
\[19.6\times {{10}^{10}}N/{{m}^{2}}\]
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D)
\[19.6\times {{10}^{15}}N/{{m}^{2}}\]
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question_answer 44) Speed of a ball of 2 cm radius in a viscous liquid is 20 cm/s. Then the speed of 1 cm radius of ball in the same liquid is
A)
80 cm/s
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B)
40 m/s
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C)
10 cm/s
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D)
5 cm/s
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question_answer 45) A particle is thrown vertically upwards. Its velocity at half of the height is 10 m/s. Then the maximum height attained by it is \[(g=10\text{ }m/{{s}^{2}})\]
A)
16m
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B)
10m
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C)
8m
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D)
18m
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question_answer 46) The reactance of a coil when used in the AC power supply (220 V, 50 cycle/s) is\[50\,\Omega \]. The inductance of the coil is nearly
A)
0.16 H
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B)
0.22 H
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C)
2.2 H
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D)
1.6 H
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question_answer 47) The angle for which maximum height and horizontal range are same for a projectile is
A)
\[32{}^\circ \]
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B)
\[48{}^\circ \]
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C)
\[76{}^\circ \]
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D)
\[84{}^\circ \]
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question_answer 48) When a car moves on a road with uniform speed of 30 km/h, then the net resultant force on the car is
A)
the driving force, drives the car in the direction of propagation of car
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B)
the resistive force acts opposite to the direction of propagation of car
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C)
zero
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D)
none of the above
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question_answer 49) To draw maximum current from a combination of cells, how should the cells be grouped?
A)
Series
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B)
Parallel
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C)
Mixed
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D)
Depends upon the relative values of external and internal resistance
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question_answer 50) What causes change in the colours of the soap or oil films for the given beam of light?
A)
Angle of incidence
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B)
Angle of reflection
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C)
Thickness of film
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D)
None of the above
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question_answer 51) Carborundum is
A)
\[SiC\]
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B)
\[AlC{{l}_{3}}\]
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C)
\[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]
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D)
\[A{{l}_{2}}{{O}_{3}}.2{{H}_{2}}O\]
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question_answer 52) The number of unpaired electron in\[M{{n}^{2+}}\]is
A)
4
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B)
5
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C)
6
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D)
7
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question_answer 53) The bond order of nitrogen molecule is
A)
2
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B)
2.5
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C)
3
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D)
none of these
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question_answer 54) Paracetamol is used as
A)
antipyretic
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B)
analgesics
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C)
antiseptics
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D)
antibiotics
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question_answer 55) The number of water molecules in Mohr?s salt is
A)
5
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B)
6
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C)
7
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D)
10
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question_answer 56) Which of the following is most basic?
A)
\[P{{H}_{3}}\]
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B)
\[As{{H}_{3}}\]
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C)
\[Sb{{H}_{3}}\]
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D)
\[N{{H}_{3}}\]
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question_answer 57) The half-life of\[_{6}{{C}^{14}}\](if its\[\lambda \]is\[2.31\times {{10}^{-4}}\]) is
A)
\[2\times {{10}^{2}}yr\]
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B)
\[3\times {{10}^{3}}yr\]
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C)
\[3.5\times {{10}^{4}}yr\]
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D)
\[4\times {{10}^{3}}yr\]
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question_answer 58) Oxidation number of Mn atom in\[KMn{{O}_{4}}\]is
A)
6
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B)
7
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C)
14
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D)
5
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question_answer 59) Benzoic acid is dissolved in benzene, van't Hoff factor will be
A)
1
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B)
0.5
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C)
1.5
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D)
2
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question_answer 60) The Gibbs free energy for a reversible reaction at equilibrium is
A)
positive
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B)
negative
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C)
zero
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D)
can be positive or negative
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question_answer 61) Which of the following electronic configuration is not possible?
A)
\[1{{s}^{2}},\text{ }2{{s}^{2}}\]
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B)
\[3{{d}^{10}},\text{ }4{{s}^{2}},4{{p}^{2}}\]
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C)
\[1{{s}^{2}},\text{ }2{{s}^{2}},\text{ }2{{p}^{6}}\]
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D)
\[1{{s}^{2}},\text{ }2{{s}^{2}},\text{ }2{{p}^{2}},\text{ }3{{s}^{1}}\]
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question_answer 62) Aldehydes and ketones can be distinguished by using
A)
Lucas reagent
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B)
Tollen's reagent
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C)
lodoform test
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D)
Phenyl hydrazine
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question_answer 63) Which radioactive elements is inert gas?
A)
\[Ra\]
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B)
\[Rn\]
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C)
\[Pu\]
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D)
\[Po\]
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question_answer 64) Which of the following has tetrahedral structure?
A)
\[NH_{4}^{+}\]
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B)
\[CO_{3}^{2-}\]
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C)
\[{{K}_{4}}[Fe{{(CN)}_{6}}]\]
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D)
None of these
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question_answer 65) Which is strongest acid?
A)
\[HClO\]
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B)
\[HCl{{O}_{2}}\]
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C)
\[HCl{{O}_{3}}\]
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D)
\[HCl{{O}_{4}}\]
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question_answer 66) If phosphoric acid is allowed to react with sufficient quantity of\[NaOH,\]the product obtained is
A)
\[N{{a}_{3}}P{{O}_{4}}\]
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B)
\[Na{{H}_{2}}P{{O}_{4}}\]
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C)
\[N{{a}_{2}}HP{{O}_{4}}\]
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D)
\[NaHP{{O}_{3}}\]
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question_answer 67) The concentration unit, independent of temperature would be
A)
molality
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B)
molarity
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C)
normality
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D)
weight per volume
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question_answer 68) Hexamethylenetetramine formed by the reaction of formaldehyde and
A)
ammonia
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B)
primary amine
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C)
secondary amine
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D)
tertiary amine
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question_answer 69) During Lassaigne's test N and S present in an organic compound changes into
A)
\[N{{a}_{2}}S\]and\[NaCN\]
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B)
\[NaSCN\]
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C)
\[N{{a}_{2}}S{{O}_{4}}\]and\[NaCN\]
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D)
\[N{{a}_{2}}S\]and\[NaCN\]
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question_answer 70) The quantum of light energy is
A)
photon
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B)
neutron
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C)
electron
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D)
proton
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question_answer 71) When ethyl alcohol reacts with\[C{{l}_{2}}\]in presence of\[NaOH,\]the product will be
A)
\[C{{H}_{3}}Cl\]
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B)
\[{{C}_{2}}{{H}_{5}}Cl\]
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C)
\[CC{{l}_{3}}.CHO\]
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D)
\[CHC{{l}_{3}}\]
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question_answer 72) The oxidation number of Fe in\[F{{e}_{3}}{{O}_{4}}\]is
A)
\[+8/3\]
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B)
\[+3/8\]
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C)
\[-8/3\]
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D)
\[-3/8\]
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question_answer 73) When lead nitrate is heated, it gives
A)
\[N{{O}_{2}}\]
done
clear
B)
\[PbO\]
done
clear
C)
both and
done
clear
D)
NO
done
clear
View Answer play_arrow
question_answer 74) Size of colloidal particle is
A)
\[{{10}^{-9}}m\text{ }to\text{ }{{10}^{-7}}m\]
done
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B)
\[{{10}^{-4}}cm\text{ }to\text{ }{{10}^{-7}}cm\]
done
clear
C)
\[{{10}^{-6}}m\text{ }to\text{ }{{10}^{-8}}m\]
done
clear
D)
\[{{10}^{-6}}cm\text{ }to\text{ }{{10}^{-9}}cm\]
done
clear
View Answer play_arrow
question_answer 75) Gun metal is an alloy of
A)
\[Mg,\text{ }Sn,\text{ }Zn\]
done
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B)
\[Cu,\text{ }Ni,\text{ }Zn\]
done
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C)
\[Cu,\text{ }Sn,\text{ }Zn\]
done
clear
D)
\[Cu,\text{ }Sb,\text{ }Zn,\text{ }Pb\]
done
clear
View Answer play_arrow
question_answer 76) \[{{C}_{6}}{{H}_{6}}+C{{l}_{2}}\xrightarrow{light}P\]Product 'P' is
A)
\[{{C}_{6}}{{H}_{5}}Cl\]
done
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B)
\[{{C}_{6}}{{H}_{4}}C{{l}_{2}}\]
done
clear
C)
\[{{C}_{6}}{{H}_{6}}C{{l}_{6}}\]
done
clear
D)
none of these
done
clear
View Answer play_arrow
question_answer 77) \[{{C}_{6}}{{H}_{6}}+C{{H}_{3}}\xrightarrow[{}]{anhy.AlC{{l}_{3}}}{{C}_{6}}{{H}_{5}}C{{H}_{3}}+HCl\] Above reaction is
A)
Kolbe?s synthesis
done
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B)
Wurtz reaction
done
clear
C)
Wurtz-Fittig reaction
done
clear
D)
Friedel-Craft's reaction
done
clear
View Answer play_arrow
question_answer 78) Which of the following substance is used as an ant knocking compound?
A)
Tetraethyl lead
done
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B)
Lead tetrachloride
done
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C)
Lead acetate
done
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D)
Ethyl acetate
done
clear
View Answer play_arrow
question_answer 79) An orbital, in which\[n=4,l=2\]is expressed as
A)
\[4p\]
done
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B)
\[4d\]
done
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C)
\[4f\]
done
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D)
\[3d\]
done
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question_answer 80) Which of the following gas is maximum present in atmosphere?
A)
\[Ar\]
done
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B)
\[C{{O}_{2}}\]
done
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C)
\[He\]
done
clear
D)
\[Xe\]
done
clear
View Answer play_arrow
question_answer 81) Hydrolysis of acetonitrile in acidic medium gives
A)
\[C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}\]
done
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B)
\[C{{H}_{3}}COOH\]
done
clear
C)
\[C{{H}_{3}}CON{{H}_{2}}\]
done
clear
D)
\[C{{H}_{3}}CHO\]
done
clear
View Answer play_arrow
question_answer 82) IUPAC name\[{{C}_{2}}{{H}_{5}}CN\]is
A)
ethyl cyanide
done
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B)
propionitrile
done
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C)
propane nitrite
done
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D)
cyano ethane
done
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View Answer play_arrow
question_answer 83) Which of the following is organometallic compound?
A)
\[C{{H}_{3}}MgBr\]
done
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B)
\[{{(C{{H}_{3}}COO)}_{2}}Pb\]
done
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C)
\[C{{H}_{3}}COONa\]
done
clear
D)
All of these
done
clear
View Answer play_arrow
question_answer 84) Which of the following is good conductor of electricity?
A)
Diamond
done
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B)
Graphite
done
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C)
Solid\[NaCl\]
done
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D)
Wood
done
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question_answer 85) ?Equal volumes of gases under similar conditions of pressure and temperature posses equal number of molecules". This law is given by
A)
Avogadro
done
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B)
Berzelius
done
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C)
Gay Lussac
done
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D)
Graham
done
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question_answer 86) Most favourable condition for ionic bonding are
A)
high charge, small cadon, large anion
done
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B)
low charge, large cation, small anion
done
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C)
low charge, large cation, large anion
done
clear
D)
high charge, small cadon, small anion
done
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View Answer play_arrow
question_answer 87) In aluminothermite process\['Al'\]act as a/an
A)
flux
done
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B)
oxidising agent
done
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C)
reducing agent
done
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D)
solder
done
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View Answer play_arrow
question_answer 88) The electronic configuradon of nitrogen can be expressed as
A)
\[1{{s}^{2}},2{{s}^{2}},2p_{x}^{2},p_{y}^{1}p_{z}^{0}\]
done
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B)
\[1{{s}^{2}},2{{s}^{2}},2p_{x}^{1},p_{y}^{1},p_{z}^{1}\]
done
clear
C)
\[1{{s}^{2}},2{{s}^{2}},2p_{x}^{3},p_{y}^{0},p_{z}^{0}\]
done
clear
D)
\[1{{s}^{2}},2{{s}^{2}},2p_{x}^{1},p_{y}^{2},p_{z}^{0}\]
done
clear
View Answer play_arrow
question_answer 89) Which of the following is formed by the action of water on\[N{{a}_{2}}{{O}_{2}}\]?
A)
Ha
done
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B)
\[{{O}_{2}}\]
done
clear
C)
\[{{N}_{2}}\]
done
clear
D)
\[C{{O}_{2}}\]
done
clear
View Answer play_arrow
question_answer 90) Glycerol has
A)
1-primary-OH, 2-secondary-OH
done
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B)
2-primary-OH, 1 secondary-OH
done
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C)
3-primary-OH
done
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D)
1-primary-OH, 1 secondary OH, 1-tertiary OH
done
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View Answer play_arrow
question_answer 91) The long form of periodic table based on
A)
atomic number
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B)
atomic mass
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C)
electronic configuration
done
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D)
effective nuclear charge
done
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View Answer play_arrow
question_answer 92) Catalyst increases the rate of reaction
A)
by decreasing\[{{E}_{a}}\]
done
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B)
by increasing\[{{E}_{a}}\]
done
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C)
by decreasing A
done
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D)
by increasing entropy
done
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View Answer play_arrow
question_answer 93) Chlorobenzene is prepared commercially by
A)
Dew's process
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B)
Decon's process
done
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C)
Raschig process
done
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D)
Etard's process
done
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question_answer 94) In a radioactive decay, an emitted electron comes from
A)
the nucleus of atom
done
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B)
the orbit with principal quantum number
done
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C)
the inner orbital of the atom
done
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D)
the outer most orbit of the atom
done
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View Answer play_arrow
question_answer 95) Oleic, stearic, palmitic acids are
A)
nucleic acids
done
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B)
ammo acids
done
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C)
fatty acids
done
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D)
none of these
done
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View Answer play_arrow
question_answer 96) The weight of one molecule of a compound \[{{C}_{60}}{{H}_{122}}\]is
A)
\[1.3\times {{10}^{-20}}g\]
done
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B)
\[5.01\times {{10}^{-21}}g\]
done
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C)
\[3.72\times {{10}^{13}}g\]
done
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D)
\[1.4\times {{10}^{-21}}g\]
done
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question_answer 97) The value of 1 amu is equal to
A)
\[1.66\times {{10}^{-24}}g\]
done
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B)
12.00 g
done
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C)
\[1.9924\times {{10}^{-24}}g\]
done
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D)
1.0 g
done
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View Answer play_arrow
question_answer 98) Which of the following compound cannot reduce Fehling solution?
A)
HCOOH
done
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B)
\[C{{H}_{3}}COOH\]
done
clear
C)
HCHO
done
clear
D)
\[C{{H}_{3}}CHO\]
done
clear
View Answer play_arrow
question_answer 99) The metal present in vitamin\[{{B}_{12}}\]is
A)
iron
done
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B)
manganese
done
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C)
cobalt
done
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D)
mercury
done
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View Answer play_arrow
question_answer 100) The product obtained, heating ethanol with cone.\[{{H}_{2}}S{{O}_{4}}\]at\[165{}^\circ C-170{}^\circ C,\]is
A)
\[{{({{C}_{2}}{{H}_{5}})}_{2}}S{{O}_{4}}\]
done
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B)
\[C{{H}_{3}}COOH\]
done
clear
C)
\[C{{H}_{2}}=C{{H}_{2}}\]
done
clear
D)
\[{{C}_{2}}{{H}_{5}}HS{{O}_{4}}\]
done
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View Answer play_arrow
question_answer 101) Who coined the term antibiotics?
A)
Woodruff
done
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B)
Darwin
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C)
Selman Waksman
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D)
Flemming
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question_answer 102) The study of relationship between size and shape is called
A)
Allopatric
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B)
Allelopathy
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C)
Allomecry
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D)
Allogamy
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question_answer 103) Moulting hormone is secreted by
A)
corpora cardiacum
done
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B)
corpora allata
done
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C)
neurosecretory hormone
done
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D)
prothoracic gland
done
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View Answer play_arrow
question_answer 104) Haemodialysis helps in patient having
A)
anaemia
done
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B)
uremia
done
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C)
goitre
done
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D)
diabetes
done
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View Answer play_arrow
question_answer 105) Movements by pseudopodia of Amoeba are due to change in
A)
pressure
done
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B)
atmosphere
done
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C)
temperature
done
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D)
viscosity
done
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View Answer play_arrow
question_answer 106) A sponge harmful to oyster industry is
A)
Cliona
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B)
Euspongia
done
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C)
Hyolonema
done
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D)
Spongilla
done
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View Answer play_arrow
question_answer 107) During meiosis crossing over occurs at
A)
pachytene
done
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B)
zygotene
done
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C)
leptotene
done
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D)
diakinesis
done
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View Answer play_arrow
question_answer 108) Matrix of bone is composed of
A)
chondrin
done
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B)
ossein
done
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C)
osteon
done
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D)
auxin
done
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View Answer play_arrow
question_answer 109) It From outer to inside the sequence of three bones present in the middle ear of mammals is
A)
malleus, stapes and incus
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B)
stapes, malleus and incus
done
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C)
malleus, incus and stapes
done
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D)
incus, malleus and stapes
done
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View Answer play_arrow
question_answer 110) The reabsorprion of water in the kidney is under the control of
A)
LH
done
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B)
ADH
done
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C)
STH
done
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D)
ACTH
done
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question_answer 111) Glucagon is secreted by
A)
beta cells of pancreas
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B)
beta cells of islets of Langerhans
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C)
alpha cells of pancreas
done
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D)
adrenal cortex
done
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question_answer 112) Which pan of a sperm enters into an ovum during fertilization?
A)
Head
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B)
Tail
done
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C)
Whole of it
done
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D)
Middle piece
done
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View Answer play_arrow
question_answer 113) Yersninia pestis is responsible for
A)
syphilis
done
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B)
whooping cough
done
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C)
plague
done
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D)
leprosy
done
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View Answer play_arrow
question_answer 114) Male Anopheles does not transmit malarial parasite because
A)
it catches fever
done
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B)
it is too small to carry parasite
done
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C)
the parasite is killed in its stomach
done
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D)
it does not drink blood
done
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View Answer play_arrow
question_answer 115) Protein present in silk fibre is
A)
casein
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B)
keratin
done
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C)
elastin
done
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D)
fibroin
done
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View Answer play_arrow
question_answer 116) Ovulation takes place in a month between
A)
11-14 day
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B)
14-16 day
done
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C)
15-28 day
done
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D)
21-26 day
done
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View Answer play_arrow
question_answer 117) Sugar fructose is present in the secrection of
A)
Bartholin's gland
done
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B)
Cowper's gland
done
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C)
perineal glands
done
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D)
prostate gland
done
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question_answer 118) In sea anemone, the symmetry is
A)
radial
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B)
bilateral
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C)
spherical
done
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D)
absent
done
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question_answer 119) The colour of bone marrow in foetus is
A)
red
done
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B)
yellow
done
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C)
brown
done
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D)
none of these
done
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View Answer play_arrow
question_answer 120) Compound squamous epithelium is found in
A)
stomach
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B)
intestine
done
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C)
trachea
done
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D)
pharynx
done
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question_answer 121) Sacculus rotundus is a dilated part at posterior end of
A)
ileum
done
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B)
oesophagus
done
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C)
ilium
done
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D)
colon
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View Answer play_arrow
question_answer 122) Liver of man is
A)
bilobed
done
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B)
3-lobed
done
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C)
4-lobed
done
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D)
5-lobed
done
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View Answer play_arrow
question_answer 123) Cysricercus is the larval stage of
A)
pinworm
done
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B)
tapeworm
done
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C)
roundworm
done
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D)
liver fluke
done
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View Answer play_arrow
question_answer 124) Solenocytes are associated with
A)
respiration
done
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B)
digestion
done
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C)
excretion
done
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D)
nutrition
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question_answer 125) Which of following organ can be called a son of "blood bank" ?
A)
Heart
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B)
Spleen
done
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C)
Liver
done
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D)
Lungs
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question_answer 126) Colle's fracture is associated with
A)
femur
done
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B)
ulna
done
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C)
humerus
done
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D)
radius
done
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question_answer 127) The vital capacity of human being is about
A)
1200 mL
done
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B)
4800 mL
done
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C)
2400 mL
done
clear
D)
3600 mL
done
clear
View Answer play_arrow
question_answer 128) The percentage of \[{{O}_{2}}\]in inhaled air is about
A)
21%
done
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B)
16%
done
clear
C)
79%
done
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D)
4%
done
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View Answer play_arrow
question_answer 129) The gland often referred in relation to AIDS is
A)
adrenal
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B)
thyroid
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C)
thymus
done
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D)
pituitary
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question_answer 130) The hormone which stimulates constriction of gall bladder
A)
gastrin
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B)
secretin
done
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C)
glucagon
done
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D)
cholecystokinin
done
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View Answer play_arrow
question_answer 131) Broca's area is connected with
A)
learning and reasoning
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B)
speech function
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C)
receiving the impulses from eyes
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D)
sensation of smell
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question_answer 132) The cavity of diencephalon is known as
A)
\[\text{I}\] ventricle
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B)
\[\text{II}\] ventricle
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C)
\[\text{III}\] ventricle
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D)
iter
done
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question_answer 133) Normal level of urea in blood plasma is
A)
80-100 mg/100mL blood
done
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B)
18-38 mg/100 mL blood
done
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C)
30-40 mg/100 mL blood
done
clear
D)
1-10mg/100 mL blood
done
clear
View Answer play_arrow
question_answer 134) Sporogony of malarial parasite occurs in
A)
liver of man
done
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B)
RBCs of man
done
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C)
salivary glands of mosquito
done
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D)
stomach wall of mosquito
done
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View Answer play_arrow
question_answer 135) Which vitamin should not be stored ?
A)
Calciferol
done
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B)
Retinol
done
clear
C)
Niacin
done
clear
D)
Ascorbic acid
done
clear
View Answer play_arrow
question_answer 136) Which one of the following has an open circulatory system ?
A)
Pheretima
done
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B)
Periplaneta
done
clear
C)
Hirudinaria
done
clear
D)
Octopus
done
clear
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question_answer 137) The cranial capacity of Peking man was about
A)
900 cc
done
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B)
1660 cc
done
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C)
1075 cc
done
clear
D)
1450 cc
done
clear
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question_answer 138) Connecting link between annelids and mollusks is
A)
Neopilina
done
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B)
Peripatus
done
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C)
Periplaneta
done
clear
D)
Limulus
done
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View Answer play_arrow
question_answer 139) Labium majora of a female mammal is homologous to
A)
penis
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B)
prostate gland
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C)
epididymis
done
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D)
scrotal sac
done
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View Answer play_arrow
question_answer 140) Eustachian canal connects
A)
middle ear with external ear
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B)
middle ear with internal ear
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C)
external ear with internal ear
done
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D)
pharynx with middle ear
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View Answer play_arrow
question_answer 141) Shell of molluscs is derived from
A)
foot
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B)
mantle
done
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C)
ctenidia
done
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D)
placoid
done
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question_answer 142) Which is common between earthworm, leech and centipede ?
A)
They have Malpighian tubules
done
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B)
They are hermaphrodite
done
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C)
They have ventral nerve cord
done
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D)
They have no legs
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View Answer play_arrow
question_answer 143) Pneumatic bones are expected to be found in
A)
house lizard
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B)
flying fish
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C)
pigeon
done
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D)
tadpole of frog
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question_answer 144) The velocity of conduction of nerve impulse in frog is
A)
300 m/s
done
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B)
same as of electricity
done
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C)
faster than sound
done
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D)
30 m/s
done
clear
View Answer play_arrow
question_answer 145) Which compound has very important role in prebiotic evolution ?
A)
\[S{{O}_{2}}\]
done
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B)
NO
done
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C)
\[C{{H}_{4}}\]
done
clear
D)
\[S{{O}_{3}}\]
done
clear
View Answer play_arrow
question_answer 146) How many sperm cells are present in an average (3 cc) ejaculation?
A)
200 million
done
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B)
300 million
done
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C)
400 million
done
clear
D)
500 million
done
clear
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question_answer 147) A man of 'A' blood group marries a woman of AB' blood group, which type of progeny would indicate that man is heterozygous ?
A)
O
done
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B)
B
done
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C)
A
done
clear
D)
AB
done
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question_answer 148) Which one of the following is not a vestigial structure in Homo sapiens ?
A)
Third molar
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B)
Epiglottis
done
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C)
Plica semilunaris
done
clear
D)
Pyramidalis muscle
done
clear
View Answer play_arrow
question_answer 149) Balbiani rings are the structural features of
A)
allosomes
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B)
polytene chromosomes
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C)
autosomes
done
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D)
Lampbrush chromosomes
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question_answer 150) The permanent decrease in population number occurs due to
A)
migration
done
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B)
natality
done
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C)
emigration
done
clear
D)
mortality
done
clear
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question_answer 151) Benthic organisms are found in
A)
surface of marine water
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B)
middle of water in sea
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C)
bottom of sea
done
clear
D)
on ground
done
clear
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question_answer 152) In Whittaker's system of classification, prokaryotes belong to the kingdom
A)
Monera
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B)
Protista
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C)
Animalia
done
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D)
Fungi
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question_answer 153) The process which cannot cake place in the absence of viruses is
A)
transformation
done
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B)
conjugation
done
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C)
translocation
done
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D)
transduction
done
clear
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question_answer 154) Water bloom is generally caused by
A)
green algae
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B)
blue-green algae
done
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C)
bacteria
done
clear
D)
Hydrilla
done
clear
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question_answer 155) Clinging roots are found in
A)
Orchids
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B)
Trapa
done
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C)
Podostemon
done
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D)
Screwpine
done
clear
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question_answer 156) Winged petioles are characteristic of
A)
Podostemon
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B)
Citrus
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C)
neem
done
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D)
banana
done
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question_answer 157) Seed may be defined as
A)
ripened ovule
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B)
fertilized ovary
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C)
the gynoecium
done
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D)
embryo
done
clear
View Answer play_arrow
question_answer 158) Which one of die following is a saprophytic Biyophyte ?
A)
Ricda fluitans
done
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B)
Buxbaumia aphylla
done
clear
C)
Funaria hygrometrica
done
clear
D)
Sphagnum
done
clear
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question_answer 159) A genophore is made up of
A)
a single double stranded DNA
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B)
a single stranded DNA
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C)
UNA and histories
done
clear
D)
histones and non-histones
done
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question_answer 160) Who was awarded Nobel Prize for the synthesis of RNA?
A)
A Kornberg
done
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B)
H Khorana
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C)
Nirenberg
done
clear
D)
S Ochoa
done
clear
View Answer play_arrow
question_answer 161) Potato leaf roll or leaf curl of papaya are caused by
A)
fungi
done
clear
B)
viruses
done
clear
C)
bacteria
done
clear
D)
nematodes
done
clear
View Answer play_arrow
question_answer 162) Iodine is obtained from
A)
Laminaria
done
clear
B)
Chlorella
done
clear
C)
Potysiphonia
done
clear
D)
Porphyra
done
clear
View Answer play_arrow
question_answer 163) Covered smut of barley is caused by
A)
Ustilago hordei
done
clear
B)
Tilltetia caries
done
clear
C)
Ustilago nuda
done
clear
D)
Colletotrichum falcatum
done
clear
View Answer play_arrow
question_answer 164) Retort cells occur in
A)
Funaria
done
clear
B)
Pogonatum
done
clear
C)
Porella
done
clear
D)
Sphagnum
done
clear
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question_answer 165) The jute fibres anatomically are
A)
bast fibres
done
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B)
cortical fibres
done
clear
C)
xylem fibres
done
clear
D)
pith fibres
done
clear
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question_answer 166) Phloem parenchyma is absent in
A)
monocot stem
done
clear
B)
dicotstem
done
clear
C)
dicot root
done
clear
D)
dicot leaf
done
clear
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question_answer 167) Parachute type dispersal occurs in
A)
tomato
done
clear
B)
mustard
done
clear
C)
pea
done
clear
D)
cotton
done
clear
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question_answer 168) Root hair absorbs water from soil through
A)
turgor pressure
done
clear
B)
ion exchange
done
clear
C)
osmosis
done
clear
D)
DPD
done
clear
View Answer play_arrow
question_answer 169) Plants need one of the following for ATP formation
A)
N, P
done
clear
B)
N, Cu
done
clear
C)
N.Ca
done
clear
D)
K
done
clear
View Answer play_arrow
question_answer 170) In CAM plants, \[C{{O}_{2}}\]acceptor is
A)
RuBP
done
clear
B)
PEP
done
clear
C)
OAA
done
clear
D)
PGA
done
clear
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question_answer 171) The energy currency of cell is
A)
NAD
done
clear
B)
GDP
done
clear
C)
RNA
done
clear
D)
ATP
done
clear
View Answer play_arrow
question_answer 172) Which one of the following is a natural growth inhibitor?
A)
NAA
done
clear
B)
ABA
done
clear
C)
IAA
done
clear
D)
GA
done
clear
View Answer play_arrow
question_answer 173) Which one is a short day plant?
A)
Brossica compestris
done
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B)
Rdphanus sativus
done
clear
C)
Glycine max
done
clear
D)
Papaversomniferum
done
clear
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question_answer 174) Florigen is produced in the region of
A)
leaves
done
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B)
fruit
done
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C)
root
done
clear
D)
trunk
done
clear
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question_answer 175) "Sanjeevani boori" is
A)
Selaginella kraussiana
done
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B)
Selaginella chrysocaculos
done
clear
C)
Selaginella bryopteris
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 176) The process of decay of dead organic matter is known as
A)
denitrification
done
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B)
nitrification
done
clear
C)
nitrogen fixation
done
clear
D)
ammonification
done
clear
View Answer play_arrow
question_answer 177) Apical dominance w caused by
A)
auxin
done
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B)
gibberellin
done
clear
C)
kinetin
done
clear
D)
ABA
done
clear
View Answer play_arrow
question_answer 178) Cystolith is made up of
A)
silica
done
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B)
calcium carbonate
done
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C)
calcium oxalate
done
clear
D)
inulin
done
clear
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question_answer 179) Growth of pollen tube towards embryo sac is
A)
geotropism
done
clear
B)
thigmotaxis
done
clear
C)
chemotaxis
done
clear
D)
all of these
done
clear
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question_answer 180) Ozone depletion in stratosphere would result in
A)
forest fires
done
clear
B)
global warming
done
clear
C)
skin cancer incidence
done
clear
D)
none of these
done
clear
View Answer play_arrow
question_answer 181) Molybdenum causes
A)
mottling
done
clear
B)
wilting
done
clear
C)
reclamation
done
clear
D)
chloros is
done
clear
View Answer play_arrow
question_answer 182) Which of the following is a test cross?
A)
\[Tt\times tt\]
done
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B)
\[TT\times tt\]
done
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C)
\[Tt\times Tt\]
done
clear
D)
\[tt\times tt\]
done
clear
View Answer play_arrow
question_answer 183) Tetradynamous stamens are found in family
A)
Malvaceae
done
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B)
Solanaceae
done
clear
C)
Crudferae
done
clear
D)
Liliaceae
done
clear
View Answer play_arrow
question_answer 184) The witches broom of legume is caused by
A)
virus
done
clear
B)
bacteria
done
clear
C)
fungus
done
clear
D)
mycoplasma
done
clear
View Answer play_arrow
question_answer 185) Opium is obtained from
A)
Oryza sativa
done
clear
B)
Coffea Arabica
done
clear
C)
Thea sinensis
done
clear
D)
Papaver somniferum
done
clear
View Answer play_arrow
question_answer 186) A pigment which absorbs red and far red light is
A)
carotene
done
clear
B)
xanthophyll
done
clear
C)
phytochrome
done
clear
D)
cytochrome
done
clear
View Answer play_arrow
question_answer 187) 1:2:1 phenotypic and genotypic ratio is found in
A)
complementary genes
done
clear
B)
blending inheritance
done
clear
C)
multiple alleles
done
clear
D)
pseudo alleles
done
clear
View Answer play_arrow
question_answer 188) From which of the following plant is a medicine for respiratory disorders obtained?
A)
Ephedra
done
clear
B)
Eucalyptus
done
clear
C)
Cannabis
done
clear
D)
Saccharum
done
clear
View Answer play_arrow
question_answer 189) Osmotic pressure of a solution is
A)
greater than pure solvent
done
clear
B)
less than pure solvent
done
clear
C)
equal to pure solvent
done
clear
D)
less than or greater than pure solvent
done
clear
View Answer play_arrow
question_answer 190) Decarboxyladon is involved in
A)
electron transport system
done
clear
B)
glycolysis
done
clear
C)
Krebs' cycle
done
clear
D)
lactic acid fermentation
done
clear
View Answer play_arrow
question_answer 191) Ginger multiplies vegetatively by
A)
tuber
done
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B)
corm
done
clear
C)
sucker
done
clear
D)
rhizome
done
clear
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question_answer 192) Damaged sieve tubes are sealed by deposition of
A)
pectin
done
clear
B)
callus
done
clear
C)
suberin
done
clear
D)
lignin
done
clear
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question_answer 193) During meiosis crossing over occurs between which part of homologous chromosome?
A)
Sister chromatids
done
clear
B)
Non-sister chromatids
done
clear
C)
Genes
done
clear
D)
Alleles
done
clear
View Answer play_arrow
question_answer 194) Phytotron is
A)
a controlled condition chamber for tissue culture
done
clear
B)
leaf culture process
done
clear
C)
special culture of plants
done
clear
D)
root culture process
done
clear
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question_answer 195) The backbone of RNA consists of which of the following sugar?
A)
Deoxyribose
done
clear
B)
Ribose
done
clear
C)
Sucrose
done
clear
D)
Maltose
done
clear
View Answer play_arrow
question_answer 196) Pigment present in cyanobacteria is
A)
r-phycocyanin
done
clear
B)
r-phycoerythrin
done
clear
C)
c-phycocyanin
done
clear
D)
anthocyanin
done
clear
View Answer play_arrow
question_answer 197) Stop codons are
A)
\[\text{AUG,}\,\text{GUG}\]
done
clear
B)
\[\text{UAA,}\,\text{UGA,}\,\text{UAG}\]
done
clear
C)
\[\text{UAC,}\,\text{UGG}\]
done
clear
D)
\[\text{AGU,}\,\text{AGA,}\,\text{UAC}\]
done
clear
View Answer play_arrow
question_answer 198) A lake with nutrients is called
A)
trophic
done
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B)
euphoric
done
clear
C)
oligotrophic
done
clear
D)
eutrophic
done
clear
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question_answer 199) Expanded green stem of Opuntia is called
A)
phylloclade
done
clear
B)
tendril
done
clear
C)
bulbs
done
clear
D)
cladode
done
clear
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question_answer 200) "Foolish seedling disease" of rice in Japan was caused by
A)
the deficiency of nitrogen
done
clear
B)
a bacterium
done
clear
C)
a fungus
done
clear
D)
a virus
done
clear
View Answer play_arrow
Choose the correct statement from the following.
