question_answer 1) A large number of bullets are fired in all directions with same speed v. What is the maximum area on the ground on which these bullets will spread
A)
\[\pi \frac{{{V}^{2}}}{g}\]
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B)
\[\pi \frac{{{V}^{2}}}{{{g}^{2}}}\]
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C)
\[{{\pi }^{2}}\frac{{{V}^{4}}}{{{g}^{2}}}\]
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D)
\[{{\pi }^{2}}\frac{{{V}^{2}}}{{{g}^{2}}}\]
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question_answer 2) A force vector applied on a body is given by \[\overset{\text{ }\!\!\hat{\ }\!\!\text{ }}{\mathop{\text{F}}}\,\text{=6}\overset{\text{ }\!\!\hat{\ }\!\!\text{ }}{\mathop{\text{i}}}\,\text{-8}\overset{\text{ }\!\!\hat{\ }\!\!\text{ }}{\mathop{\text{j}}}\,\text{+10}\overset{\text{ }\!\!\hat{\ }\!\!\text{ }}{\mathop{\text{k}}}\,\] and acquires an acceleration of 1 m/s2. Then the mass of the body is
A)
10\[\sqrt{2}\]kg
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B)
\[2\sqrt{10}\] kg
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C)
10kg
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D)
20kg
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question_answer 3) A 2 kg block is dropped from a height of 0.4 m on a spring of force constant k = 1960 N/m. The maximum compression of the spring is
A)
0.1 m
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B)
0.2 m
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C)
0.3m
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D)
0.4m
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question_answer 4) A solid sphere of mass 2 kg rolls up a \[30{}^\circ \] incline with an initial speed 10 m/s. The maximum height reached by the sphere is\[(g=10m/{{s}^{2}})\]
A)
3.5m
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B)
7.0m
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C)
10.Sm
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D)
14.0m
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question_answer 5) The ratio of the adiabatic bulk modulus to the isothermal bulk modulus of a perfect gas is equal to (symbols have their usual meanings)
A)
\[{{C}_{p}}-{{C}_{v}}\]
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B)
\[\frac{{{C}_{p}}}{{{C}_{v}}}\]
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C)
\[\frac{{{C}_{v}}}{{{C}_{p}}}\]
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D)
\[\sqrt{\frac{{{C}_{p}}}{{{C}_{v}}}}\]
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question_answer 6) A simple pendulum has time period T. The pendulum is completely immersed in a non-viscous liquid whose density is one-tenth, of that of the material of the bob. The time period of the pendulum immersed in liquid is
A)
\[T\]
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B)
\[\sqrt{\frac{9}{10}}T\]
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C)
\[\sqrt{\frac{10}{9}T}\]
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D)
\[\frac{T}{10}\]
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question_answer 7) How many times more intense is a 90 dB sound than a 40 dB sound?
A)
2.5
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B)
5
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C)
50
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D)
10s
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question_answer 8) If\[x=\frac{{{\varepsilon }_{0}}lv}{t}\] where \[{{\varepsilon }_{0}}\] is the permittivity of free space, v is length, v is potential difference and t is time. The dimensions of X are the same as that of
A)
charge
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B)
resistance
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C)
voltage
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D)
current
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question_answer 9) An electric dipole placed in a uniform electric field will have minimum potential energy when the dipole moment is inclined to the field at an angle
A)
\[\pi \]
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B)
\[\frac{\pi }{2}\]
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C)
zero
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D)
\[\frac{3\pi }{2}\]
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question_answer 10)
In the figure, the equivalent capacitance between A and B is
A)
3.75 \[\pi F\]
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B)
5.25 \[\pi F\]
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C)
6.5 \[\pi F\]
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D)
10.5 \[\pi F\]
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question_answer 11) If we add impurity to a metal those atoms also deflect electrons. Therefore,
A)
the electrical and thermal conductivities both increase
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B)
the electrical and thermal conductivities both decrease
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C)
the electrical conductivity increases but thermal conductivity decreases
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D)
the electrical conductivity decreases but thermal conductivity increases
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question_answer 12) A toroidal solenoid with an air core has an average radius of 15 cm, area of cross-section 12 cm2 and 1200 turns. Ignoring the field variation across the cross-section of the toroid, the self-inductance of the toroid is
A)
4.6 mH
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B)
6.9 mH
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C)
2.3 mH
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D)
9.2 mH
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question_answer 13) Two plane mirrors are placed perpendicular to each other. A ray strikes one mirror and after reflection from the second mirror will be
A)
perpendicular to the original ray
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B)
parallel to the original ray
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C)
at\[45{}^\circ \]to the original ray
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D)
can be at any angle to the original ray
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question_answer 14) An electron moving with velocity\[2\times {{10}^{7}}m/s\] describes a circle in a magnetic field of strength\[2\times {{10}^{-2}}T\]. If \[\left( \frac{e}{m} \right)\] of electron is\[1.76\times {{10}^{11}}C/kg\]then the diameter of the circle is nearly
A)
1.1 cm
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B)
1.1 mm
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C)
1.1m
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D)
11cm
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question_answer 15) An electron makes transition inside a hydrogen atom. The orbital angular momentum of the electron may change by
A)
\[h\]
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B)
\[\frac{h}{3\pi }\]
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C)
\[\frac{h}{2\pi }\]
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D)
\[\frac{h}{4\pi }\]
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question_answer 16) The transfer ratio \[\beta \] of a transistor is 50. The input resistance of the transistor when used in the common emitter mode is 1 \[K\Omega \] The peak value of the collector alternating current for an input peak voltage of 0.01V is
A)
100 \[\mu \]A
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B)
500 \[\mu \]A
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C)
0.01 \[\mu \]A
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D)
0.25 \[\mu \]A
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question_answer 17) A combination of convex and concave lenses has power 4 D. If the convex lens has power 5 D, the focal length of the concave lens will be
A)
100cm
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B)
100 cm
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C)
\[-1\text{ }cm\]
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D)
\[\frac{100}{-9}\]cm
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question_answer 18) A scooter of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10 s is
A)
360 N
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B)
720 N
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C)
180 N
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D)
\[120\times 10.8\text{ }N\]
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question_answer 19) A heat engine absorbs heat at\[327{}^\circ C\]and exhausts heat at\[127{}^\circ C\]. The efficiency of engine is \[\eta \] and the maximum amount of work performed by the engine per kilocalorie of heat input is W. Then,
A)
\[\eta \]=0.38
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B)
\[\eta \]=0.88
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C)
W=1596J
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D)
W=1400J
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question_answer 20) A simple pendulum with length L and mass of the bob is vibrating with an amplitude a. Then the maximum tension in the string is
A)
mg
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B)
\[mg\left[ 1+{{\left( \frac{a}{L} \right)}^{2}} \right]\]
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C)
\[mg{{\left[ 1+\frac{a}{2L} \right]}^{2}}\]
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D)
mg\[{{\left[ 1+\left( \frac{a}{L} \right) \right]}^{2}}\]
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question_answer 21) Two charged conducting spheres of radii \[{{R}_{1}}\] and\[{{R}_{2}}\] separated by a large distance are connected by a long wire. The ratio of the charges on them is
A)
\[\frac{{{R}_{1}}}{{{R}_{2}}}\]
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B)
\[\frac{{{R}_{2}}}{{{R}_{1}}}\]
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C)
\[\frac{{{R}_{{{1}^{2}}}}}{{{R}_{{{2}^{2}}}}}\]
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D)
\[\frac{{{R}_{{{2}^{2}}}}}{{{R}_{{{1}^{2}}}}}\]
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question_answer 22) A proton and an a-particle, accelerated through the same potential difference, enter a region of uniform magnetic field normally. If the radius of the proton orbit is 10 cm, then radius of a-orbit is
A)
10cm
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B)
\[10\sqrt{2}\]cm
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C)
20cm
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D)
\[5\sqrt{2}\] cm
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question_answer 23) In a noiseless transformer, an alternating current of 2 A is flowing in the primary coil. The number of turns on the primary and secondary coils are 100 and 20 respectively. The value of the current in the secondary coil is
A)
0.08 A
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B)
0.4 A
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C)
5 A
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D)
10 A
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question_answer 24) A solenoid 30 cm long is made by winding 2000 loops of wire on an iron rod whose cross-section is 1.5 cm2. If the relative permeability of the iron is 6000, what is the self-inductance of the solenoid?
A)
1.5 H
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B)
2.5 H
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C)
3.5 H
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D)
0.5 H
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question_answer 25) A luminous object is placed 20 cm from surface of a convex mirror and plane mirror is set, so that virtual images formed in two mirrors coincide. If plane mirror is at a distance of 12 cm from object, then focal length of convex mirror is
A)
5cm
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B)
10cm
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C)
20 cm
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D)
40 cm
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question_answer 26) In a shunted ammeter, only 10% of current passes through the galvanometer of resistance G. The resistance of the shunt is
A)
\[9G\]
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B)
\[10G\]
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C)
\[\frac{G}{9}\]
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D)
\[\frac{G}{10}\]
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question_answer 27)
The output Y of the logic circuit shown in figure is best represented as
A)
\[\overline{A}+\overline{B.C}\]
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B)
\[A+\overline{B.}\]
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C)
\[\overline{A+B.C}\]
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D)
\[A+\overline{B.}\,C\]
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question_answer 28) A resistor of 6 k\[\Omega \] with tolerance 10% and another of 4 k\[\Omega \] with tolerance 10% are connected in series. The tolerance of combination is about
A)
5%
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B)
10%
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C)
12%
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D)
15%
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question_answer 29) A stone attached to a rope of length 80 cm is rotated in vertical plane with a speed of 240 rpm. At the moment when the velocity of the stone is directed vertically upwards, the rope ruptures. To what further height does the stone rise? (The air resistance should be neglected)
A)
10.3m
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B)
41.2m
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C)
20.4m
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D)
24.9m
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question_answer 30) Two bodies of masses 10 kg and 100 kg are separated by a distance of 2m. The gravitational potential at the mid-point on the line joining the two is
A)
\[7.3\times {{10}^{-7}}\text{J/kg}\]
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B)
\[7.3\times {{10}^{-8}}\text{J/kg}\]
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C)
\[7.3\times {{10}^{-9}}\text{J/kg}\]
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D)
\[7.3\times {{10}^{-6}}\text{J/kg}\]
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question_answer 31) A vessel has 6 g of hydrogen at pressure p and temperature 500 K. A small hole is made in it so, That hydrogen leaks out. How much hydrogen leaks out if the final pressure is \[\frac{P}{2}\] and temperature falls to 300 K?
A)
2 g
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B)
3 g
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C)
4 g
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D)
1 g
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question_answer 32) For an enclosure maintained at 1000 K, the maximum radiation occurs at wavelength \[{{\lambda }_{m.}}\] If the temperature is raised to 2000 K, the peak will shift to
A)
\[{{\lambda }_{m.}}/2\]
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B)
\[2{{\lambda }_{m.}}\]
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C)
\[{{2}^{4}}{{\lambda }_{m.}}\]
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D)
\[{{2}^{-4}}{{\lambda }_{m.}}\]
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question_answer 33) An electron moving in a circular orbit of radius R, with a period T is equivalent to a magnetic dipole of dipole moment
A)
\[\frac{2\pi \operatorname{Re}}{T}\]
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B)
\[\frac{\pi eR}{T}\]
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C)
\[\frac{\pi e{{R}^{2}}}{T}\]
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D)
\[\pi {{R}^{2}}_{e}T\]
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question_answer 34) A coil of area\[5c{{m}^{2}}\]and of 20 turns is placed in uniform magnetic field of\[{{10}^{3}}T\]The normal to the plane of the coil makes an angle of\[60{}^\circ \]with the magnetic field. The flux in max well through the coil, is
A)
\[{{10}^{5}}\]
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B)
\[5\times {{10}^{4}}\]
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C)
\[2\times {{10}^{4}}\]
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D)
\[5\times {{10}^{3}}\]
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question_answer 35) A coil has an inductance of 0.7 H and is joined in series with a resistance of 220 \[\Omega \] When an alternating emf of 220 Vat 50 cps is applied to it, then the wattless component of the current in the circuit is
A)
5 A
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B)
0.5 A
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C)
0.7 A
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D)
7 A
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question_answer 36) An electron jumps from the 4th orbit to the 2nd orbit of hydrogen atom. Given the Rydbergs constant\[R={{10}^{5}}c{{m}^{-1}},\]the frequency in Hz of the emitted radiation will be
A)
\[\frac{3}{10}\times {{10}^{5}}\]
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B)
\[\frac{16}{3}\times {{10}^{15}}\]
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C)
\[\frac{9}{16}\times {{10}^{15}}\]
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D)
\[\frac{3}{4}\times {{10}^{15}}\]
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question_answer 37) The decay constant K of a radioactive sample is the probability of decay of an atom in unit time. Then,
A)
\[\lambda \]decreases as the atom becomes older
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B)
\[\lambda \]increases as the age of atoms increases
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C)
\[\lambda \]independent of the age of atoms
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D)
\[\lambda \]behaviour of \[\lambda \]A with time depends on the nature of the activity
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question_answer 38) 38. If a surface has work function 4.0 eV, what is the maximum velocity of electrons liberated from the surface when it is irradiated with ultraviolet radiation of wavelength 0.2 \[\mu m\]?
A)
\[4.4\times {{10}^{5}}m/s\]
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B)
\[8.8\times {{10}^{7}}m/s\]
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C)
\[8.8\times {{10}^{5}}m/s\]
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D)
\[4.4\times {{10}^{7}}m/s\]
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question_answer 39) An installation consisting of an electric motor driving a water pump lifts 75 L of water per second to a height of 4.7 m. If the motor consumes a power of 5 kW, then the efficiency of the installation is
A)
39%
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B)
69%
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C)
93%
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D)
96%
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question_answer 40) The Keplers second law states that the straight line joining the planet to the sun sweeps out equal areas in equal times. The statement is equivalent to saying that
A)
total acceleration is zero
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B)
transverse acceleration is zero
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C)
longitudinal acceleration is zero
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D)
radial acceleration is zero
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question_answer 41) The number of possible structures of amines\[({{C}_{7}}{{H}_{9}}N)\]having one benzene ring is
A)
5
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B)
3
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C)
4
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D)
6
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question_answer 42) Vitamin\[{{B}_{1}}\]is
A)
riboflavin
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B)
cobalamin
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C)
thiamine
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D)
pyridoxine
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question_answer 43) During roasting of zinc blende, it converts to
A)
\[ZnO\]
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B)
\[ZnS{{O}_{4}}\]
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C)
\[ZnC{{O}_{3}}\]
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D)
\[Zn\]
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question_answer 44) \[Xe{{F}_{4}}\]reacts with water at\[-80{}^\circ C\]to give
A)
\[XeO{{F}_{2}}\]
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B)
\[XeO{{F}_{4}}\]
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C)
\[Xe{{O}_{3}}\]
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D)
\[Xe{{O}_{2}}{{F}_{2}}\]
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question_answer 45) The number of\[POP\]bonds in the structure of phosphorus pentaoxide and phosphorus trioxide are respectively
A)
6,6
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B)
5,5
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C)
5, 6
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D)
6, 5
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question_answer 46) The most unsymmetrical and symmetrical systems are respectively
A)
tetragonal, cubic
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B)
triclinic, cubic
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C)
rhombohedral, hexagonal
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D)
orthorhombic, cubic
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question_answer 47) In the reaction,\[HN{{O}_{3}}\]+Rpio\[\xrightarrow[{}]{{}}\]\[4HP{{O}_{3}}+x,\]the product X is
A)
\[N{{O}_{2}}\]
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B)
\[{{N}_{2}}{{O}_{5}}\]
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C)
\[{{N}_{2}}{{O}_{3}}\]
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D)
\[{{H}_{2}}O\]
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question_answer 48) The basicity of orthophosphoric acid is
A)
2
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B)
4
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C)
3
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D)
5
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question_answer 49) In the radioactive change, \[_{z}{{p}^{A}}{{\xrightarrow[{}]{{}}}_{z+1}}{{Q}^{A}}{{\xrightarrow[{}]{{}}}_{z-1}}{{R}^{A-4}}{{\xrightarrow[{}]{{}}}_{z-1}}{{S}^{A-4}},\] the radiations emitted in sequence are
A)
\[\alpha ,\beta ,\gamma \]
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B)
\[\beta ,\alpha ,\gamma \]
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C)
\[\gamma ,\alpha ,\beta \]
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D)
\[\beta ,\gamma ,\alpha \]
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question_answer 50) In contact process of manufacture\[{{H}_{2}}S{{O}_{4}},\]the catalyst used is
A)
iron
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B)
\[{{V}_{2}}{{O}_{5}}\]
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C)
chromium
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D)
oxides of nitrogen
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question_answer 51) Which of the following is pseudohalogen?
A)
\[I{{F}_{7}}\]
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B)
\[{{(CN)}_{2}}\]
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C)
\[IC{{l}_{2}}\]
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D)
\[I_{3}^{-}\]
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question_answer 52) Correct formula of calomel is
A)
\[HgC{{l}_{2}}\]
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B)
\[HgC{{l}_{2}}.{{H}_{2}}O\]
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C)
\[H{{g}_{2}}C{{l}_{2}}\]
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D)
\[HgS{{O}_{4}}\]
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question_answer 53) The angle in case of a water molecule is approximately
A)
\[90{}^\circ \]
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B)
\[180{}^\circ \]
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C)
\[105{}^\circ \]
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D)
\[75{}^\circ \]
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question_answer 54) Which one is an example of globular protein?
A)
Keratin
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B)
Collagen
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C)
Insulin
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D)
Myosin
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question_answer 55) Which of the following reaction takes place when a mixture of concentrated\[HN{{O}_{3}}\]and \[{{H}_{2}}S{{O}_{4}}\]reacts with benzene at 350K?
A)
Sulphonation
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B)
Nitration
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C)
Hydrogenation
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D)
Dehydration
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question_answer 56) How many chiral carbon atoms are present in 2, 3, 4 - Trichloropentane?
A)
Three
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B)
Two
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C)
One
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D)
Four
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question_answer 57) Geometry of reaction intermediate in\[{{S}_{N}}1\]reaction is
A)
tetrahedral
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B)
planar
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C)
triangular bipyramidal
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D)
None of the above
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question_answer 58) In acetylene molecule, the two carbon atoms are linked by
A)
One-o-bond and two Ti-bonds
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B)
two o-bonds and one TC-bond
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C)
three o-bonds
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D)
three TC-bonds
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question_answer 59) In a galvanic cell, which one of the following statements is not correct?
A)
Anode is negatively charged
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B)
Cathode is positively charged
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C)
Reduction takes place at the anode
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D)
Reduction takes place at the cathode
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question_answer 60) The zig-zag motion of colloidal particles was first observed by
A)
John Tyndall
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B)
Robert Brown
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C)
Zsigmondy
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D)
Ostwald
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question_answer 61) Which of the following is not present in DNA?
A)
Adenine
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B)
Guanine
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C)
Uracil
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D)
Thymine
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question_answer 62) Oxygen and ozone are
A)
isotopes
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B)
isomers
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C)
isobars
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D)
allotropes
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question_answer 63) Which of the following is weakest acid?
A)
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B)
done
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C)
done
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D)
done
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question_answer 64) The reaction between an alkyl halide and an alkoxide ion to give an ether is known as
A)
Williamsons synthesis
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B)
Clemmensens reduction
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C)
Fittig reaction
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D)
Wurtz reaction
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question_answer 65)
\[C\xrightarrow[{}]{{{H}_{2}}O}D\] Here, D is
A)
\[C{{H}_{3}}\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,OC{{H}_{2}}C{{H}_{3}}\]
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B)
\[C{{H}_{3}}O\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,C{{H}_{2}}C{{H}_{3}}\]
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C)
\[C{{H}_{3}}\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,C{{H}_{2}}C{{H}_{2}}OH\]
done
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D)
\[C{{H}_{3}}C{{H}_{2}}\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,C{{H}_{2}}OH\]
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question_answer 66) \[[CoBr{{(N{{H}_{3}})}_{5}}]S{{O}_{4}}\]and\[[CoS{{O}_{4}}{{(N{{H}_{3}})}_{5}}]Br\]are related to each other as
A)
ionisation isomers
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B)
linkage isomers
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C)
coordinatiom isomers
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D)
optical isomiers
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question_answer 67) Which of the following atoms has no neutron in its nucleus?
A)
Helium
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B)
Lithium
done
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C)
Protium
done
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D)
Tritium
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question_answer 68) With increasing bond order, stability of a bond
A)
increases
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B)
decreases
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C)
remains unaltered
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D)
None of these
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question_answer 69) Urotropine is obtained by the reaction of\[N{{H}_{3}}\]with
A)
\[C{{H}_{3}}OH\]
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B)
\[HCHO\]
done
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C)
\[C{{H}_{3}}CHO\]
done
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D)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
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question_answer 70) Wolff-Kishner reaction is used for the reduction of
A)
carboxylic acids
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B)
carbonyl compounds
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C)
olefins
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D)
nitro compounds
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question_answer 71)
4-bromo-l-butanol [A] can be converted into 5-hydroxy pentanoic acid [B] by following method [s] \[I.\]\[A\xrightarrow[{}]{Mg/ether}\xrightarrow[(ii){{H}_{3}}{{O}^{+}}]{(i)C{{O}_{2}}}B\] \[II.\]\[A\xrightarrow[{}]{KCN}\xrightarrow[{}]{{{H}_{3}}{{O}^{+}}}B\] \[III.\]\[A\xrightarrow[{}]{Aq.\,KOH}\xrightarrow[{}]{KMn{{O}_{4}}/{{H}^{+}}}B\]
Select the correct alternate
A)
\[I,\text{ }II,\text{ }III\]
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B)
\[I,\text{ }II\]
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C)
\[II,\text{ }III\]
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D)
\[II\]
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question_answer 72) Oil of winter green is
A)
done
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B)
done
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C)
done
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D)
done
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question_answer 73) \[\alpha -D-\]glucose and\[\beta -D-\]glucose have a specific rotation of\[+112{}^\circ \]and\[+19.2{}^\circ \] respectively. In aqueous solution, the rotation becomes\[+52{}^\circ \]. This is known as
A)
racemisation
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B)
mutarotation
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C)
inversion
done
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D)
enolisation
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question_answer 74) Time required to decompose\[S{{O}_{2}}C{{l}_{2}}\]to half of its initial amount is 60 min. If the decomposition is a first order reaction, what is the rate constant of the reaction?
A)
\[1.925\times {{10}^{-4}}s\]
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B)
\[2.092\times {{10}^{-4}}{{s}^{-1}}\]
done
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C)
\[1.925\times {{10}^{-4}}{{s}^{-1}}\]
done
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D)
\[2.925\times {{10}^{-4}}{{s}^{-1}}\]
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question_answer 75) Which of the following has a bond order of 1.75?
A)
\[ClO_{3}^{-}\]
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B)
\[ClO_{4}^{-}\]
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C)
\[NO_{3}^{-}\]
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D)
\[CO_{3}^{2-}\]
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question_answer 76) The ionisation energy of nitrogen is larger than that of oxygen because of
A)
greater attraction of electrons by the nucleus
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B)
the size of nitrogen atom being smaller
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C)
the half-filled p-orbitals possess extra stability
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D)
greater penetration effect
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question_answer 77) Which one is the strongest reducing agent?
A)
\[N{{H}_{3}}\]
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B)
\[As{{H}_{3}}\]
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C)
\[Sb{{H}_{3}}\]
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D)
\[P{{H}_{3}}\]
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question_answer 78) Preparation of ethane by electrolysis of aqueous solution of potassium acetate is called
A)
Wurtz reaction
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B)
Kolbes electrolysis
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C)
Grignard reaction
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D)
Sabatier-Sendersens reaction
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question_answer 79) What is density of\[S{{O}_{2}}\]gas at\[27{}^\circ C\]and 2 arm pressure? (Atomic weight\[S=32,\text{ O}=16,\] \[R=0.0821\text{ }L\text{ }atm\text{ }{{K}^{-1}}mo{{l}^{-1}}\])
A)
5.0246
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B)
4.1246
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C)
3.0196
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D)
5.1969
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question_answer 80) 38.00 mL of moist nitrogen gas were collected at\[27{}^\circ C\]and 746.5 mm pressure. What is the volume of the gas at\[0{}^\circ C\]and 760 mm pressure? (Aq. tension at\[27{}^\circ C\]is 26.5 mm).
A)
32.76
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B)
23.76
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C)
12.05
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D)
11.56
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question_answer 81) What is the enthalpy of hydrogenation of ethylene, given that the enthalpy of combustion of ethylene, hydrogen and ethane are\[-1410.0,-286.2\]and\[-1560.6\text{ }kJ\text{ }mo{{l}^{-1}}\]respectively at 298 K?
A)
135.6
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B)
\[-135.6\]
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C)
125.6
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D)
\[-125.6\]
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question_answer 82) What is the pH value of\[0.03\text{ }N\text{ }HCl\]solution?
A)
2.5229
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B)
3.2229
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C)
1.5229
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D)
None of these
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question_answer 83) The\[{{H}_{2}}{{O}^{+}}\]ion concentration of a solution having pH 6.58 is
A)
\[2.63\times {{10}^{7}}\]
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B)
\[2.63\times {{10}^{-7}}\]
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C)
\[36.2\times {{10}^{7}}\]
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D)
\[36.2\times {{10}^{-7}}\]
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question_answer 84) One mole of magnesium nitride on reaction with an excess of water gives
A)
one mole of ammonia
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B)
one mole of nitric acid
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C)
two moles of ammonia
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D)
two moles of nitric acid
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question_answer 85) Photoelectric effect is maximum in
A)
Cs
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B)
Na
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C)
K
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D)
\[Li\]
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question_answer 86) Fused ionic compounds
A)
are insulators
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B)
are used as semiconductors
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C)
conduct electricity
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D)
do not conduct electricity
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question_answer 87) The bonds between P atoms and\[Cl\]atoms in\[PC{{l}_{5}}\]are likely to be
A)
ionic with no covalent character
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B)
covalent with some ionic character
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C)
covalent with no ionic character
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D)
ionic with some metallic character
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question_answer 88) Covalent compounds are soluble in
A)
polar solvents
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B)
non-polar solvents
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C)
concentrated acids
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D)
all solvents
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question_answer 89) An ingredient of baking powder is
A)
sodium bicarbonate
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B)
sodium chloride
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C)
borax
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D)
sodium carbonate
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question_answer 90) The most reactive allotrope of phosphorus is
A)
violet phosphorus
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B)
white phosphorus
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C)
red phosphorus
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D)
scarlet phosphorus
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question_answer 91) Correct order representing electro negativities of halogens is
A)
\[F<Cl<Br<I\]
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B)
\[F>Cl>Br>I\]
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C)
\[F>Cl<Br<I\]
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D)
\[F<Cl>Br>I\]
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question_answer 92) For a first order reaction,\[A\to \]products, if k is the rate constant then the half-life period of the reaction is
A)
\[\frac{1}{k}\log \frac{[A]}{{{[A]}_{0}}}\]
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B)
\[\frac{1}{k}\frac{1}{[A]}\]
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C)
\[\frac{0.693}{k}\]
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D)
\[\frac{\log 2}{k}\]
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question_answer 93) Dead burnt plaster is
A)
\[CaS{{O}_{4}}.2{{H}_{2}}O\]
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B)
\[MgS{{O}_{4}}.2{{H}_{2}}O\]
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C)
\[CaS{{O}_{4}}.1/2{{H}_{2}}O\]
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D)
\[CaS{{O}_{4}}\]
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question_answer 94) The active constituent of bleaching powder is
A)
\[Ca{{(OCl)}_{2}}\]
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B)
\[Ca(OCl)Cl\]
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C)
\[Ca{{(Cl{{O}_{2}})}_{2}}\]
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D)
\[Ca(Cl{{O}_{2}})Cl\]
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question_answer 95) Which of the following is applied in this reaction? \[C{{H}_{3}}CHBrC{{H}_{2}}C{{H}_{3}}\xrightarrow[{}]{Alc.\,KOH}\] (i) \[C{{H}_{3}}CH=CHC{{H}_{3}}\]major product (ii)\[C{{H}_{2}}=CHC{{H}_{2}}C{{H}_{3}}\]minor product
A)
Hermanns rule
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B)
Kharasch effect
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C)
Saytzeffs rule
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D)
Markownikoffs rule
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question_answer 96) Which of the following compound is unknown?
A)
\[NC{{l}_{5}}\]
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B)
\[N{{l}_{3}}\]
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C)
\[SbC{{l}_{3}}\]
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D)
\[NC{{l}_{3}}\]
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question_answer 97) Group displacement law was given by
A)
Becquerel
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B)
Rutherford
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C)
Soddy and Fajan
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D)
Madam Curie
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question_answer 98) Which of the following represents the Lewis structure of\[{{N}_{2}}\]molecule?
A)
done
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B)
done
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C)
done
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D)
done
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question_answer 99) Cellulose is a polymer containing the monomer
A)
ribose
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B)
glucose
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C)
fructose
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D)
starch
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question_answer 100) Minamata disease is due to pollution of
A)
organic waste into drinking water
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B)
oil spill in water
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C)
industrial waste mercury into fishing water
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D)
arsenic into the atmosphere
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question_answer 101) The viruses with nucleic acid but without protein coat are known as
A)
viroids
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B)
virions
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C)
capsomeres
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D)
prions
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question_answer 102) Identify the vector suitable to clone long fragments of DNA.
A)
Phage vectors
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B)
Bacterial plasmids
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C)
Yeast plasmids
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D)
Cosmids
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question_answer 103) Genetic recombination by transduction in bacterial was discovered first in
A)
Salmonella typhimurium
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B)
Escherichia coli
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C)
Streptococcus pneumoniae
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D)
Agrobactermm tumefaciens
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question_answer 104) The brown hair present at the base of the petiole of Pteris are called
A)
setae
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B)
ramenta
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C)
spines
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D)
stipules
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question_answer 105) Number of peristomial teeth in Funaria capsule is
A)
16
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B)
32
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C)
64
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D)
128
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question_answer 106) Development of haploid plants from totipotent pollen is called
A)
androgenesis
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B)
parthenocarpy
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C)
emasculation
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D)
somatic hybridization
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question_answer 107) Grass stem elongates after initial growth due to
A)
lateral meristem
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B)
secondary meristem
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C)
intercalary meristem
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D)
apical meristem
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question_answer 108) Protoplast lacks
A)
cytoplasm
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B)
nucleus
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C)
plasma membrane
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D)
cell wall
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question_answer 109) An example of physiological xerophyte is
A)
Salvinia
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B)
Euphorbia
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C)
Salicornia
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D)
Agave
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question_answer 110) Blood glands of Pheretima are located in which segments?
A)
1, 2 and 3
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B)
3, 4 and 5
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C)
4, 5 and 6
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D)
10, 11 and 12
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question_answer 111) Silicates consumed along with food by Pheretima and excreted by
A)
flame cells
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B)
chloragogen cells
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C)
intestinal cells
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D)
basal cells
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question_answer 112) Association between barnacles and Limulus is
A)
symbiosis
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B)
antagonism
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C)
ectocommens.alism
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D)
endocommensalism
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question_answer 113) The cells are chlorophyllous, fewer in number, unique in shape and inner walls thick. This decription fits into
A)
subsidiary cells
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B)
guard cells
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C)
passage cells
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D)
bulliform cells
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question_answer 114) The scientific name of lung fluke of man is
A)
Hymenolepis nana
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B)
Schistosomum haematobium
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C)
Paragonimus westermani
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D)
Echinococcus granulosus
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question_answer 115) Plasmodium falciparum causes which type of malaria?
A)
Quartan
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B)
Pernicious
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C)
Tertian
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D)
Benign tertian
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question_answer 116) The structures which join two bones at joints are made up of
A)
elastic fibres
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B)
collagen fibres
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C)
fibrocytes
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D)
chondrocytes
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question_answer 117) Development of mesoderm in the form of muscles in body wall, leaving alimentary canal non-muscular is the feature of
A)
acoelomates
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B)
pseudocoelomates
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C)
enterocoelomates
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D)
schizocoelomates
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question_answer 118) Dermatobiasis in cattle is caused by
A)
maggots of bot fly
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B)
wriggler of mosquito
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C)
nits of head louse
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D)
drones of honey bee
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question_answer 119) The type of vascular bundles in the stem of Dracaena is
A)
radial
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B)
bicollateral
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C)
amphicribal
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D)
amphivasal
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question_answer 120) Schuffners dots produced by Plasmodium are
A)
reserve food
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B)
antibodies
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C)
hormones
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D)
antigens
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question_answer 121) Which of the following has thorns bearing leaves and flowers on them?
A)
Duranta
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B)
Artabotrys
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C)
Carissa
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D)
Bougainvillea
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question_answer 122) When malic acid is the respiratory substrate
A)
the amount of carbon dioxide released is more than the oxygen consumed
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B)
the amount of carbon dioxide released is less than the oxygen consumed
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C)
the amount of carbon dioxide released is equal to oxygen consumed
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D)
carbon dioxide is not released
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question_answer 123) The risk of spoilage is less in salted pickles because of
A)
guttation
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B)
plasmolysis
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C)
imbibition
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D)
diffusion
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question_answer 124) In photosynthesis electron transport system, manganese ions are associated with
A)
oxygen evolving complex
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B)
cytochrome \[{{f}_{0}}-{{f}_{1}}\]
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C)
cytochromehy bg \[{{b}_{6}}-f\]complex
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D)
plastoquinones
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question_answer 125) Which of the following is needed both in photosynthesis and respiration?
A)
Chlorophyll
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B)
Carbon dioxide
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C)
Oxygen
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D)
Cytochrome
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question_answer 126) Identify the trisaccharide
A)
Mannose
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B)
Maltose
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C)
Raffinose
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D)
Galactose
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question_answer 127) Karyotype means a
A)
single haploid set of chromosomes of an organisms
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B)
diagrammatic representation of the chromosome
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C)
genes constituting a single set of chromosomes
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D)
type of nucleus of an organism
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question_answer 128) The underground stem of this genus is a rhizome
A)
Allium
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B)
Gloriosa
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C)
Scilla
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D)
Lilium
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question_answer 129) The characteristic fruit type in Asteraceae is
A)
carcerulus
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B)
capsule
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C)
cypsela
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D)
caryopsis
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question_answer 130) Mode of feeding in tunicates
A)
acrophagus
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B)
parasitic
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C)
ciliary or filter
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D)
myxotrophic
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question_answer 131) Valve of Thebesius is present in the heart of
A)
fish
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B)
frog
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C)
Chamaeleon
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D)
rabbit
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question_answer 132) Soluble fibrinogen is converted into insoluble fibrin by the action of
A)
thromboplastin
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B)
cephalin
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C)
heparin
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D)
thrombin
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question_answer 133) Silicosis is caused by
A)
acid rain
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B)
depletion of ozone
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C)
inhalation of aerosols
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D)
inhalation of sulphur dioxide
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question_answer 134) The plasmid \[_{\text{p}}\text{B}{{\text{R}}_{\text{322}}}\] used in biotechnology is
A)
yeast
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B)
\[{{\text{M}}^{\text{32}}}\]phage
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C)
parasite
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D)
cloning vehicle
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question_answer 135) In Cycas, diploxylic condition is found in
A)
stem
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B)
root
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C)
coralloid root
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D)
leaflet
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question_answer 136) The cyst wall of Euglena is made up of
A)
carbohydrates
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B)
lipoproteins
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C)
lipids
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D)
histones
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question_answer 137) Western blot test is done for the conformation of
A)
malaria
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B)
filaria
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C)
anaemia
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D)
AIDS
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question_answer 138) Separation of sick and non-productive birds from healthy and productive birds is known as
A)
deworming
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B)
culling
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C)
dubbing
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D)
cannibalism
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question_answer 139) In Spirogyra, a brief period of tetranucleate condition is found in
A)
hold fast
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B)
gametangium
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C)
vegetative cell
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D)
germinating zygote
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question_answer 140) An example for holandric inheritance is
A)
epidermolysis
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B)
Turners syndrome
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C)
haemophilia
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D)
webbed toes
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question_answer 141) For a gene with two alleles, if the gene frequency of recessive gene is 0.2. What is the genotypic frequency of homozygous dominant?
A)
0.064
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B)
0.8
done
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C)
0.64
done
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D)
0.32
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question_answer 142) The number of lobes in left lung of rabbit is
A)
two
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B)
three
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C)
four
done
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D)
five
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question_answer 143) When one gene influences the expression of another non-allelic gene, it is termed as
A)
epistasis
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B)
poly multiple allelism
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C)
segregation
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D)
pleiotropy
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question_answer 144) An example of sex-influenced inheritance is
A)
haemophilia
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B)
colour blindness
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C)
baldness
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D)
Downs syndrome
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question_answer 145) Which one of the following is a reference to xenogamy?
A)
Ripening of androecium earlier to gynoecium
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B)
Pollen grains of one flower reaching the stigma of another flower present on the same plant
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C)
Pollen grains of one flower, reaching the stigma of another flower present on a different plant of the same species
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D)
The inability of pollen to germinate on the stigma of the same flower
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question_answer 146) Which one of the following is useful in identifying the different strains of causal microbe of an infectious disease?
A)
Colchicine
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B)
Agrobacterium
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C)
Complementary DNA
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D)
Crystal violet
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question_answer 147) The photoperiodic cycles of 6 hours of dark period and 18 hours of light period induce flower formation in
A)
Xanthium
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B)
tobacco
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C)
soybean
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D)
Beta vulgaris
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question_answer 148) When one molecule of glucose is completely oxidised during aerobic respiration, how many molecules of carbon dioxide are released due to tricarboxylic acid cycle?
A)
One
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B)
Two
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C)
Three
done
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D)
Four
done
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question_answer 149) Which of the following reaction does not take place in the cell organelle, that is referred to as power house of the cell?
A)
Glycine decarboxylation
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B)
Glyceraldehyde 3-phosphate drogenation
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C)
Fumaric acid hydration
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D)
Cytochrome oxidation
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question_answer 150) Swollen and spongy petioles are characteristic of
A)
Trapa
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B)
Wolffia
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C)
Ceratophyllum
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D)
Limnophila
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question_answer 151) A plant with low \[C{{O}_{2}}\] compensation point is
A)
Atriplex patula
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B)
Leucopoa kingu
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C)
Gossypium hirsutum
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D)
Tidestromia oblongifolia
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question_answer 152) During which phase of their replication, the bacteriphages release lysozyme?
A)
Adsorption
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B)
Maturation
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C)
Eclipse
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D)
Penetration
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question_answer 153) In Pheretima, the number of ring vessels per segment in 12th and 13th segment, is
A)
10 pairs
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B)
10 pairs
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C)
12 pairs
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D)
24 pairs
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question_answer 154) A couple whose sons are colour blind with AB blood group, identify the parent from the following.
A)
Mother colourblind with blood group-A and father normal with blood group-B
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B)
Mother normal with blood group-A and father colourblind with blood group-B
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C)
Mother colourblind with blood group-B and father normal with blood group-B
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D)
Mother normal with blood group-A and father colourblind with blood group-B
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question_answer 155) An example of vestigial organ is
A)
wing of ApteryJc
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B)
tail of Macropus
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C)
eyelid of man
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D)
flipper of whale
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question_answer 156) In a cross between individuals with genotypes TrRr, if the resulting number of off springs is 16, identify the number of genotypes with TtRr and TtRR amongst them.
A)
1 and 2
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B)
2 and 3
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C)
3 and 1
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D)
4 and 2
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question_answer 157) During oxygen transport, the oxyhaemoglobin at the tissue level liberates oxygen to the cells due to
A)
\[{{O}_{2}}\] concentration is high and \[C{{O}_{2}}\] is low
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B)
\[{{O}_{2}}\] concentration is low and \[C{{O}_{2}}\] is high
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C)
\[{{O}_{2}}\] tension is low and \[C{{O}_{2}}\] tension is high
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D)
\[{{O}_{2}}\] tension is high and \[C{{O}_{2}}\] tension is low
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question_answer 158) The gestation period of cow is
A)
30 days
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B)
270 days
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C)
280 days
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D)
300 days
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question_answer 159) In protein synthesis, the initiator codon is
A)
AAA
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B)
AGC
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C)
AAT
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D)
AUG
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question_answer 160) Adaptive radiation is an example of
A)
directional selection
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B)
diversifying selection
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C)
stabilising selection
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D)
sympatric speciation
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question_answer 161) What percentage of homozygous \[R{{h}^{-}}\] will be born amongst 4 children couple where the husband is heterozygous for \[R{{h}^{+}}\]and wife is homozygous for \[R{{h}^{-}}\] gene?
A)
25%
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B)
50%
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C)
75%
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D)
100%
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question_answer 162) One of the human diseases due to magnification of heavy metal is
A)
Minimata
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B)
asthma
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C)
tuberculosis
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D)
elephantiasis
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question_answer 163) The ears of a mammal living in a cold area were smaller than the one living in a warm area. This is an example of
A)
Bergmans rule
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B)
Jordans rule
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C)
Aliens rule
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D)
Glogers rule
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question_answer 164) The growth rate of population stabilises after
A)
logarithmic phase
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B)
stationary phase
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C)
carrying capacity
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D)
negative acceleration phase
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question_answer 165) Identify from the following which can give a complementary and palindromic sequence.
A)
5ATATCC3
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B)
5 CCGAAT 3
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C)
5GAATTCS
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D)
3AGGTTCS
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question_answer 166) According to IUGN red list, what is the status of red panda (Athurus fulgens)?
A)
Vulnerable species
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B)
Critically endangered species
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C)
Extinct species
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D)
Endangered species
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question_answer 167) In which one pair, both the plants can be vegetatively propagated by leaf pieces?
A)
Bryophyllum and Kalanchoe
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B)
Chrysanthemum and Agave
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C)
Agave and Kalanchoe
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D)
Asparagus and Bryophyllum
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question_answer 168) G-6-P dehydrogenase deficiency is associated with haemolysis of
A)
lymphocytes
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B)
RBCs
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C)
platelets
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D)
leucocytes
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question_answer 169) The name of Norman Borlaug is associated with
A)
green revolution
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B)
yellow revolution
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C)
white revolution
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D)
blue revolution
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question_answer 170) Which one of the following makes use of RNA as a template to synthesise DNA?
A)
Reverse transcriptase
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B)
DNA dependent RNA polymerase
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C)
DNA polymerase
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D)
RNA polymerase
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question_answer 171) One of the most important function of botanical gardens is that
A)
one can observe tropical plant there
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B)
they allow ex situ conservation of germplasm
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C)
they provide the natural habitat for wildlife
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D)
they provide a beautiful area for recreation
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question_answer 172) Protein synthesis in an animal cell occurs
A)
only on the ribosomes present in cytosol
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B)
on ribosomes present in cytoplasm as well as in mitochondria
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C)
only on ribosomes attached to the nuclear envelope and endoplasmic reticulum
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D)
on ribosomes present in the nucleolus as well as in cytoplasm
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question_answer 173) Which of the following is not true for a species?
A)
Members of a species can interbreed
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B)
Variations occurs among members of a species
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C)
Each species is reproductively isolated from every other species
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D)
Gene flow does not occur between the populations of a species
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question_answer 174) Potometer works on the principle of
A)
amount of water absorbed equals the amount transpired
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B)
osmotic pressure
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C)
root pressure
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D)
potential difference between the tip of the tube and that of the plant
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question_answer 175) Which of the following is the relatively most accurate method for dating of fossils?
A)
Potassium-argon method
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B)
Uranium-lead method
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C)
Electron spin resonance method
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D)
Radio-carbon method
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question_answer 176) During transcription holoenzyme RNA polymerase binds to a DNA sequence and the DNA assumes a saddle-like structure at that point. What is that sequence called?
A)
CAAT box
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B)
GGTT box
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C)
AAAT box
done
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D)
TATA box
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question_answer 177) Telomerase is an enzyme, which is a
A)
repetitive DNA
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B)
RNA
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C)
simple protein
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D)
ribonucleoprotein
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question_answer 178) Centromere is required for
A)
transcription
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B)
crossing over
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C)
cytoplasmic cleavage
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D)
movement of chromosomes towards poles
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question_answer 179) In Ornithine cycle, which of the following wastes are removed from the blood?
A)
Urea and urine
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B)
Ammonia and urea
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C)
Carbon dioxide and ammonia
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D)
Carbon dioxide and urea
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question_answer 180) Damage to thymus in a child may lead to
A)
a reduction in haemoglobin content of blood
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B)
a reduction in stem cell production
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C)
loss of antibody mediated immunity
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D)
loss of cell mediated immunity
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question_answer 181) Biodiversity Act of India was passed by the Parliament in the year
A)
1996
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B)
1992
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C)
2002
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D)
2000
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question_answer 182) During which stage in the complete oxidation of glucose, are the greatest number of ATP molecules formed from ADP?
A)
Conversion of pyruvic acid to acetyl Co-A
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B)
Electron transport chain
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C)
Glycolysis
done
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D)
Krebs cycle
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question_answer 183) A woman with normal vision, but whose father was colourblind, marries a colourblind man. Suppose that the fourth child of this couple was a boy. This boy
A)
must have normal colour vision
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B)
will be partially colourblind since he is heterozygous for the colourblind mutant allele
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C)
must be colourblind
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D)
may be colourblind or may be of normal vision
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question_answer 184) Which of the following is geneally used for induced mutagenesis in crop plants?
A)
Alpha particles
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B)
X-rays
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C)
UV(260nm)
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D)
Gamma rays (from cobalt 60)
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question_answer 185) Which one of the following depresses brain activity and produces feeling of calmness, relaxation and drowsiness?
A)
Valium
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B)
Morphine
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C)
Hashish
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D)
Amphetamines
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question_answer 186) Golden rice is transgenic crop of the future with the following improved trait.
A)
High lysine (essential amino acid) content
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B)
Insect resistance
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C)
High protein content
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D)
High vitamin-Acontent
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question_answer 187) Photosynthetic Active Radiation (PAR) has the following range of wavelengths.
A)
400 to 700 nm
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B)
450 to 950 nm
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C)
340 to 450 nm
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D)
500 to 600 nm
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question_answer 188) The catalytic efficiency of two different enzymes can be compared by
A)
the \[{{K}_{m}}\] value
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B)
the pH optimum value
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C)
formation of the product
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D)
molecular size of the enzyme
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question_answer 189) Which one of the following pairs is mismatched?
A)
Savanna - Acacia trees
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B)
Prairie - Epiphytes
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C)
Tundra - Permafrost
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D)
Coniferous forest - Evergreen tress
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question_answer 190) Using imprints from a plate with complete medium and carrying bacterial colonies, you can selected streptomycin resistant mutants prove that such mutations do not originate as adaptation. These imprints need to be used
A)
only on plates with streptomycin
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B)
on plates with minimal medium
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C)
only on plates without streptomycin
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D)
on plates with and without streptomycin
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question_answer 191) A patient is generally advised to specially consume more meat, lentils, milk and eggs in diet only, when he suffers from
A)
kwashiorkor
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B)
rickets
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C)
anaemia
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D)
scurvy
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question_answer 192) Epithelial cells of the intestine involved in food absorption have on their surface
A)
pinocytic vesicles
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B)
phagocytic vesicles
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C)
zymogen granules
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D)
microvilli
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question_answer 193) Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example.
A)
Enlargement of body size by swallowing air in puffer fish
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B)
Melanism in moths
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C)
Poison fangs in snakes
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D)
Colour change in Chamaeleon
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question_answer 194) For retting of jute, the fermenting microbe used is
A)
Helicobactor pylori
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B)
methophilic bacteria
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C)
Streptococcus lactis
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D)
butyric acid bacteria
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question_answer 195) From the following statements, select the wrong one
A)
Millipedes have two pairs of appendage in each segment of the body
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B)
Prawn has two pairs of antennae
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C)
Animals belonging to phylum-Porifera are exclusively marine
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D)
Nematocysts are characteristic of phylum-Cnidaria
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question_answer 196) Nucleotide are building blocks of nucleic acid, nucleotide is a composite molecule formed
A)
(base-sugar-phosphate) n
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B)
base-sugar-OH
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C)
base-sugar-phosphate
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D)
sugar-phosphate
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question_answer 197) Which one of the following experiments suggest that simplest living organisms could not have originated spontaneously from non- living matter?
A)
Microbes did not appear in stored meat
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B)
Larvae could appear in decaying organic matter
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C)
Microbes appeared from unsterilized organic matter
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D)
Meat was not spoiled, when heated and kept sealed in a vessel
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question_answer 198) There exists a close association between the alga and the fungus within a lichen. The fungus
A)
fixes the atmospheric nitrogen for the alga
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B)
provides protection, anchorage and absorption for the alga
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C)
provides food for the alga
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D)
releases oxygen for the alga
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question_answer 199) A student wishes to study the cells structure under a light microscope having 10X eyepiece and 45X objective. He should illuminate the object by which one of the following colors of light so as to get the best possible resolution?
A)
Yellow
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B)
Green
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C)
Blue
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D)
Red
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question_answer 200) At what stage of the cell cycle are histone proteins synthesised in a eukaryotic cell?
A)
During entire prophase
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B)
During telophase
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C)
During S-phase
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D)
During \[{{\text{G}}_{\text{2}}}\text{-stage}\]of prophase
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