question_answer 1) The angle subtended by the vector \[A=4\hat{i}+3\hat{j}+12\hat{k}\]with the \[x-\]axis is
A)
\[{{\sin }^{-1}}\left( \frac{3}{13} \right)\]
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B)
\[{{\sin }^{-1}}\left( \frac{4}{13} \right)\]
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C)
\[{{\cos }^{-1}}\left( \frac{4}{13} \right)\]
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D)
\[{{\cos }^{-1}}\left( \frac{3}{13} \right)\]
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question_answer 2) The velocity of a particle v at an instant t is given by \[v=at+b{{t}^{2}}\]the dimension of b is
A)
[L]
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B)
\[[L{{T}^{-1}}]\]
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C)
\[[L{{T}^{-2}}]\]
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D)
\[[L{{T}^{-3}}]\]
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question_answer 3) The distance travelled by an object along a straight line in time t is given by\[s=3-4t+5{{t}^{2}},\] the initial velocity of the object is
A)
3 unit
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B)
- 3 unit
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C)
4 unit
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D)
- 4 unit
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question_answer 4) A pellet of mass 1 g is moving with an angular velocity of 1 rad/s along a circle of radius 1 m the centrifugal force is
A)
0.1 dyne
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B)
1 dyne
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C)
10 dyne
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D)
100 dyne
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question_answer 5) Two point objects of masses 1.5 g and 2.5 g respectively are at a distance of 16 cm apart, the centre of gravity is at a distance \[x\]from the object of mass 1.5 g where \[x\] is
A)
10 cm
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B)
6 cm
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C)
13 cm
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D)
3 cm
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question_answer 6) If the earth shrinks such that its mass does not change but radius decreases to one quarter of its original value then one complete day will take
A)
96 h
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B)
48 h
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C)
6 h
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D)
1.5 h
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question_answer 7) A shell of mass 10 kg is moving with a velocity of \[10\,\text{m}{{\text{s}}^{-1}}\] when it blasts and forms two parts of mass 9 kg and 1 kg respectively. If the 1st mass is stationary, the velocity of the \[\text{2}\,\text{nd}\] is
A)
1 m/s
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B)
10 m/s
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C)
100 m/s
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D)
1000 m/s
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question_answer 8) Force required to move a mass of 1 kg at rest on a horizontal rough plane (\[\mu =0.1\] and\[g=9.8\,m{{s}^{-2}}\]) is
A)
0.98 N
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B)
0.49 N
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C)
9.8 N
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D)
4.9 N
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question_answer 9) A rocket of mass 100 kg bums 0.1 kg of fuel per sec. If velocity of exhaust gas is 1 km/s, then it lifts with an acceleration of
A)
\[1000\,\text{m}{{\text{s}}^{-2}}\]
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B)
\[100\,\text{m}{{\text{s}}^{-2}}\]
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C)
\[10\,\text{m}{{\text{s}}^{-2}}\]
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D)
\[\text{1}\,\text{m}{{\text{s}}^{\text{2}}}\]
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question_answer 10) The weight of a body on surface of earth is 12.6 N. When it is raised to a height half the radius of earth its weight will be
A)
2.8 N
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B)
5.6 N
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C)
12.5 N
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D)
25.2 N
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question_answer 11) A beaker of radius 15 cm is filled with a liquid of surface tension 0.75 N/m. Force across an imaginary diameter on the surface of the liquid is
A)
\[0.075\,N\]
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B)
\[1.5\times {{10}^{-2}}N\]
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C)
\[0.225\,N\]
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D)
\[2.25\times {{10}^{-2}}\,N\]
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question_answer 12) Two springs are joined and attached to a mass of 16 kg. The system is then suspended vertically from a rigid support. The spring constant of the two springs are \[{{k}_{1}}\]and \[{{k}_{2}}\] respectively. The two springs are \[{{k}_{1}}\]and \[{{k}_{2}}\]respectively. The period of vertical oscillations of the system will be
A)
\[\frac{1}{8\pi }\sqrt{{{k}_{1}}+{{k}_{2}}}\]
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B)
\[8\pi \sqrt{\frac{{{k}_{1}}+{{k}_{2}}}{{{k}_{1}}{{k}_{2}}}}\]
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C)
\[\frac{\pi }{2}\sqrt{{{k}_{1}}-{{k}_{2}}}\]
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D)
\[\frac{\pi }{2}\sqrt{\frac{{{k}_{1}}}{{{k}_{2}}}}\]
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question_answer 13) The equation of a progressive wave can be given by\[y=15\]\[\sin (660\pi t-0.02\pi x)\,cm.\] The frequency of the wave is
A)
330 Hz
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B)
342 Hz
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C)
365 Hz
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D)
660 Hz
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question_answer 14) A hollow cylinder with both sides open generates a frequency \[f\] in air. When the cylinder vertically immersed into water by half its length the frequency will be
A)
\[f\]
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B)
\[2f\]
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C)
\[f/2\]
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D)
\[f/4\]
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question_answer 15) Two stretched strings have lengths; and 21 while tension are T and 4T respectively. If they are made of same material the ratio of their frequency is
A)
2:1
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B)
1:2
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C)
1 : 1
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D)
1 : 4
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question_answer 16) When sound is produced in an aeroplane moving with a velocity of 200 m/s horizontal its echo is heard after \[10\sqrt{5}\,s.\] If velocity of sound in air is the elevation of aircraft is
A)
250 m
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B)
\[250\sqrt{5}\,m\]
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C)
\[12.50\,m\]
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D)
2500 m
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question_answer 17) Two tuning forks of frequency \[{{n}_{1}}\]and \[{{n}_{2}}\]produces n beats per second. If \[{{n}_{2}}\]and n are known, \[{{n}_{1}}\]may be given by
A)
\[\frac{{{n}_{2}}}{n}+{{n}_{2}}\]
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B)
\[{{n}_{2}}n\]
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C)
\[{{n}_{2}}\pm n\]
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D)
\[\frac{{{n}_{2}}}{n}-{{n}_{2}}\]
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question_answer 18) A car moving with a velocity of 36 km/h crosses a siren of frequency 500 Hz. The apparent frequency of siren after passing it will be
A)
520 Hz
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B)
485 Hz
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C)
540 Hz
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D)
460 Hz
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question_answer 19) Six molecules speeds 2 unit, 5 unit, 3 unit, 6 units, 3 unit and 5 unit respectively. The rms speed is
A)
4 unit
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B)
1.7 unit
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C)
4.2 unit
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D)
5 unit
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question_answer 20) Which one of the figure gives the temperature dependence of density of water correctly?
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 21) A bullet emerge from a barrel of length 1.2 m with a speed of \[640\,\text{m}{{\text{s}}^{-1}}.\]Assuming constant acceleration, the approximate time that it spends in the barrel after the gun is fired is
A)
4 ms
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B)
40 ms
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C)
400 us
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D)
1s
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question_answer 22) A body of mass 3 kg acted upon by a constant force is displaced by S metre, given by relation \[S=\frac{1}{3}{{t}^{2}},\]where t is in second. Work done by the force in 2 is
A)
\[\frac{8}{3}J\]
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B)
\[\frac{19}{5}J\]
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C)
\[\frac{5}{19}J\]
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D)
\[\frac{3}{8}\,J\]
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question_answer 23) The ionisation potential of hydrogen atom is -13.6 eV. An electron in the ground state of a hydrogen atoms absorbs a photon of energy 12.75 eV. How many different spectral line can one expect when the electron make a downward transition?
A)
1
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B)
4
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C)
2
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D)
6
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question_answer 24) A piece of wood is floating in water. When the temperature of water rises, the apparent weight of the wood will
A)
increase
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B)
decrease
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C)
may increase or decrease
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D)
remain same
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question_answer 25) An experiment takes 10 min to raise v temperature of water from \[\text{0}{{\,}^{\text{o}}}\text{C}\]and \[\text{100}{{\,}^{\text{o}}}\text{C}\]and another 55 min to convert it totally into steam by a stabilized heater. The latent heat of vaporization comes out to be
A)
530 cal/g
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B)
540 cal/g
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C)
550 cal/g
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D)
560 cal/g
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question_answer 26) Which of the following substance has the highest elasticity?
A)
Steel
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B)
Copper
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C)
Rubber
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D)
Sponge
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question_answer 27) A wire is stretched under a force. If the wire suddenly snaps the temperature of the wire.
A)
remains the same
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B)
decrease
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C)
increase
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D)
first decrease then increase
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question_answer 28) When the room temperature becomes equal to the dew point, the relative humidity of the room is
A)
100%
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B)
zero %
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C)
70%
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D)
85 %
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question_answer 29) At what temperature will the rms speed of air molecules be double that NTP?
A)
\[\text{519}{{\,}^{\text{o}}}\text{C}\]
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B)
\[\text{619}{{\,}^{\text{o}}}\text{C}\]
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C)
\[\text{719}{{\,}^{\text{o}}}\text{C}\]
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D)
\[\text{819}{{\,}^{\text{o}}}\text{C}\]
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question_answer 30) The refractive indices of glass and quartz w. r. t. air are 3/2 and 12/5 respectively. The refractive index of quartz w. r. t. glass is
A)
8/5
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B)
5/8
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C)
5/18
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D)
18/5
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question_answer 31) The radius of curvature of concave mirror is 24 cm and the image is magnified by 1.5 times. The object distance is
A)
20 cm
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B)
8 cm
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C)
16 cm
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D)
24 cm
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question_answer 32) A point source of light is kept at a depth of h in water of refractive index 4/3. The radius of the circle at the surface of water through which light emits is
A)
\[\frac{3}{\sqrt{7}}h\]
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B)
\[\frac{\sqrt{7}}{3}h\]
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C)
\[\frac{\sqrt{3}}{7}h\]
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D)
\[\frac{7}{\sqrt{3}}h\]
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question_answer 33) 4 point charges each +q is placed on the circumference of a circle of diameter 2d in, such a way that they form a square. The potential at the centre is
A)
0
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B)
\[\frac{4q}{d}\]
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C)
\[\frac{4d}{q}\]
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D)
\[\frac{q}{4d}\]
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question_answer 34) 64 identical spheres of charge q and capacitance C each are combined to form a large sphere is The charge and capacitance of the large sphere is
A)
\[64q,C\]
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B)
\[16q,4C\]
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C)
\[64q,4C\]
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D)
\[16q,64C\]
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question_answer 35) Lenzs law of electromagnetic induction corresponds to the
A)
law of conservation of charge
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B)
law of conservation of energy
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C)
law of conservation of momentum
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D)
law of conservation of angular momentum
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question_answer 36) Which of the following statement is correct?
A)
The rest mass of a stable nucleus is less than the sum of the rest masses of its separated nucleons.
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B)
The rest mass of a stable nucleus is greater than the sum of the rest masses of its separated nucleons.
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C)
In nuclear fission, energy is released by fusion two nuclei of medium mass (approximately100 amu).
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D)
In nuclear fission, energy is released by fragmentation of a very low nucleus.
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question_answer 37) A Si and a Ge diode has identical physical dimensions. The band gap in Si is larger than that in Ge. An identical reverse bias is applied across the diodes
A)
The reverse current in Ge is larger than that in Si
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B)
The reverse current in Si is larger than that in Ge
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C)
The reverse current is identical in the two diodes
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D)
The relative magnitude of the reverse currents cannot be determined from the given data only
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question_answer 38) A thin wire of resistance \[4\Omega \] is bent to form a circle. The resistance across any diameter is
A)
\[4\Omega \]
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B)
\[2\Omega \]
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C)
\[1\,\Omega \]
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D)
\[8\,\Omega \]
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question_answer 39) A battery of e. m. f. E and internal resistance r is connected to an external resistance R the condition for maximum power transfer is
A)
\[r<R\]
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B)
\[r>R\]
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C)
\[r=1/R\]
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D)
\[r=R\]
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question_answer 40) The binary number 10111 is equivalent to the decimal number
A)
19
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B)
31
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C)
23
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D)
22
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question_answer 41) Which one of the following pairs is obtained on heating ammonium dichromate?
A)
\[{{N}_{2}}\]and\[{{H}_{2}}O\]
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B)
\[{{N}_{2}}O\]and \[{{H}_{2}}O\]
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C)
\[N{{O}_{2}}\]and\[{{H}_{2}}O\]
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D)
NO and \[N{{O}_{2}}\]
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question_answer 42) Which one of the following processes is used for the manufacture of calcium?
A)
Reduction of CaO with carbon
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B)
Reduction of CaO with hydrogen
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C)
Electrolysis of a mixture of anhydrous \[\text{CaC}{{\text{l}}_{\text{2}}}\] and \[\text{KCl}\]
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D)
Electrolysis of molten \[\text{Ca(OH}{{\text{)}}_{2}}\]
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question_answer 43) Composition of azurite mineral is
A)
\[CuC{{O}_{3}}.CuO\]
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B)
\[Cu{{(HC{{O}_{3}})}_{2}}.Cu{{(OH)}_{2}}\]
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C)
\[2CuC{{O}_{3}}-Cu{{(OH)}_{2}}\]
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D)
\[CuC{{O}_{3}}.2Cu{{(OH)}_{2}}\]
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question_answer 44) When KI is added to acidified solution of sodium nitrite, then
A)
NO gas is liberated and \[{{\text{I}}_{\text{2}}}\] is set free
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B)
\[{{\text{N}}_{2}}\]gas is liberated and HI is produced
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C)
\[{{\text{N}}_{\text{2}}}\text{O}\]gas is liberated and \[{{\text{I}}_{2}}\] is set free
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D)
\[{{\text{N}}_{\text{2}}}\]gas is liberated and \[\text{HOI}\]is produced
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question_answer 45) \[\text{Fe(OH}{{\text{)}}_{\text{3}}}\]can be separated from \[\text{Al(OH}{{\text{)}}_{3}}\]by the addition of
A)
NaCI solution
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B)
dil. HCl solution
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C)
NaOH solution
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D)
\[\text{N}{{\text{H}}_{\text{4}}}\text{Cl}\]and \[\text{N}{{\text{H}}_{\text{4}}}\text{OH}\]
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question_answer 46) Select the incorrect statement among the following.
A)
\[{{\text{O}}_{\text{3}}}\]is used as germicide for purification of air
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B)
In \[{{O}_{3}},O-O\]bond length is identical with that of molecular oxygen
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C)
\[{{\text{O}}_{\text{3}}}\]molecule is angular in shape
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D)
\[{{\text{O}}_{\text{3}}}\]is an oxidising agent
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question_answer 47) The brown complex obtained in the detection of nitrate radical is formulated as \[\text{ }\!\![\!\!\text{ Fe(}{{\text{H}}_{2}}\text{O}{{\text{)}}_{5}}\text{NO }\!\!]\!\!\text{ S}{{\text{O}}_{4}}.\]What is the oxidation number of Fe in this complex?
A)
+1
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B)
+2
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C)
+3
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D)
0
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question_answer 48) Sodium nitrate on reduction with Zn in presence of NaOH solution produces \[\text{N}{{\text{H}}_{\text{3}}}\text{.}\]Mass of sodium nitrate absorbing Imole of electron will be
A)
7.750
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B)
10.625
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C)
8.000
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D)
9.875
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question_answer 49) In transforming 0.01 mole of PbS to \[\text{PbS}{{\text{O}}_{4}},\]the volume of 10 volume \[{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}\]required will be
A)
11.2mL
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B)
22.4 mL
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C)
33.6 mL
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D)
44.8 mL
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question_answer 50) An unknown element forms an oxide. What will be the equivalent weight of the element if the oxygen content is 20% by weight?
A)
16
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B)
32
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C)
8
done
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D)
64
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question_answer 51) \[\text{2N HCl}\] solution will have same molar concentration as a
A)
\[4.0\text{ }N\text{ }{{H}_{2}}S{{O}_{4}}\]
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B)
\[0.5\text{ }N\text{ }{{H}_{2}}S{{O}_{4}}\]
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C)
\[1\text{ }N\text{ }{{H}_{2}}S{{O}_{4}}\]
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D)
\[2\text{ }N\text{ }{{H}_{2}}S{{O}_{4}}\]
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question_answer 52) 1 mole of methyl amine on reaction with nitrous acid gives at NTP
A)
1.0 L of nitrogen
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B)
22.4 L of nitrogen
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C)
11.2 L of nitrogen
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D)
5.6 L of nitrogen
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question_answer 53) Addition of sodium acetate to 0.1 M acetic acid will cause
A)
increase in pH
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B)
decrease in pH
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C)
no change in pH
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D)
change in pH that cannot be predicted
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question_answer 54) The electronic configuration \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{9}}\]represents a
A)
metal atom
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B)
non metal atom
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C)
non-metallic anion
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D)
metallic cation
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question_answer 55) Unusually high boiling point of water is result of
A)
intermolecular hydrogen bonding
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B)
intramolecular hydrogen bonding
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C)
both intra and inter molecular hydrogen bonding
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D)
high specific heat
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question_answer 56) In the reaction \[3A\xrightarrow{{}}2B,\] rate of reaction \[+\frac{d(B)}{dt}\] is equal to
A)
\[-\frac{1}{3}\frac{d[A]}{dt}\]
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B)
\[-\frac{2}{3}\frac{d[A]}{dt}\]
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C)
\[+\frac{2d[A]}{dt}\]
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D)
\[-\frac{3}{2}+\frac{d[A]}{dt}\]
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question_answer 57) In a given shell the order of screening effect is
A)
\[~s\text{ }>\text{ }p\text{ }>\text{ }d\text{ }>\text{ }f\]
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B)
\[5\text{ }>\text{ }p\text{ }>\text{ }f\text{ }>\text{ }d\]
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C)
\[f\text{ }>d>\text{ }p>s\]
done
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D)
\[s\text{ }<\text{ }p\text{ }<\text{ }d\text{ }<\text{ }f\]
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question_answer 58) A catalyst is a substance which
A)
increases the equilibrium constant of the reaction
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B)
increases equilibrium concentration of products
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C)
does not alter the reaction mechanism
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D)
changes the activation energy of the reaction
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question_answer 59) Which of the following expressions gives the de-Broglie relationship?
A)
\[p=\frac{h}{mv}\]
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B)
\[\lambda =\frac{h}{mv}\]
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C)
\[\lambda =\frac{h}{mp}\]
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D)
\[\lambda \,m=\frac{v}{p}\]
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question_answer 60) The bond order in \[\text{O}_{2}^{-}\]ion is
A)
2
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B)
1
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C)
2.5
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D)
1.5
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question_answer 61) The rms velocity of an ideal gas at constant pressure varies with density as
A)
\[\frac{1}{\sqrt{d}}\]
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B)
\[d\]
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C)
\[\sqrt{d}\]
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D)
\[{{d}^{2}}\]
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question_answer 62) Solubility product of \[\text{Mg(OH}{{\text{)}}_{\text{2}}}\]at ordinary temperature is \[\text{1}\text{.96}\times {{10}^{-11}}.pH\]of a saturated solution of \[\text{Mg(OH}{{\text{)}}_{\text{2}}}\]will be
A)
10.53
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B)
8.47
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C)
6.94
done
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D)
3.47
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question_answer 63) If the volume of the vessel in which the reaction \[2NO+{{O}_{2}}\text{ }\xrightarrow{{}}\text{ }2N{{O}_{2}}\] is occurring is diminished to 1/3rd of its initial volume. The rate of the reaction will be increased by
A)
3 times
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B)
9 times
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C)
27 times
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D)
36 times
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question_answer 64) For which reaction change of entropy will be positive?
A)
\[{{H}_{2}}(g)+{{I}_{2}}(g)\rightleftharpoons 2HI(g)\]
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B)
\[HCl(g)+N{{H}_{3}}(g)\rightleftharpoons N{{H}_{4}}Cl(s)\]
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C)
\[N{{H}_{4}}N{{O}_{3}}(s)\rightleftharpoons {{N}_{2}}O(g)+2{{H}_{2}}O(g)\]
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D)
\[MgO(s)+{{H}_{2}}(g)\rightleftharpoons Mg(s)+2{{H}_{2}}O(l)\]
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question_answer 65) The product p of the nuclear reaction\[_{92}^{235}U_{0}^{1}n\xrightarrow{{}}p+_{36}^{92}Kr+3_{0}^{1}n,\]is
A)
\[_{56}^{141}Sr\]
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B)
\[_{56}^{141}La\]
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C)
\[_{56}^{141}Ba\]
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D)
\[_{56}^{141}Cs\]
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question_answer 66) The freezing point of water is depressed by \[\text{0}\text{.37}{{\,}^{\text{o}}}\text{C}\] in a 0.01 molal NaCI solution. The freezing point of 0.02 molal solution of urea is depressed by
A)
\[0.37{{\,}^{o}}C\]
done
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B)
\[0.74{{\,}^{o}}C\]
done
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C)
\[0.185{{\,}^{o}}C\]
done
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D)
\[0{{\,}^{o}}C\]
done
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question_answer 67) Which one of the following gives, on ozonolysis, both aldehydes and ketones?
A)
\[M{{e}_{2}}C=CHMe\]
done
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B)
\[M{{e}_{2}}C=CM{{e}_{2}}\]
done
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C)
\[MeC{{H}_{2}}-C(Me)=CM{{e}_{2}}\]
done
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D)
\[MeCH(Me)-CH=CHMe\]
done
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View Answer play_arrow
question_answer 68) Benzoylation of phenol in alkaline medium is known as
A)
Friedel-Crafts reaction
done
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B)
Wurtz-Fittig reaction
done
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C)
Schotten-Baumann reaction
done
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D)
Sabatier Senderens reduction
done
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question_answer 69) Which one of the following compounds is most reactive towards nucleophilic addition?
A)
\[C{{H}_{3}}CHO\]
done
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B)
\[PhCOC{{H}_{3}}\]
done
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C)
\[PhCOPh\]
done
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D)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
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View Answer play_arrow
question_answer 70) Distillation of acetone with concentrated sulphuric acid gives
A)
diacetone alcohol
done
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B)
mesityl oxide
done
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C)
mesitylene
done
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D)
propene-2-ol
done
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View Answer play_arrow
question_answer 71) \[\text{RC}{{\text{H}}_{\text{2}}}\text{C}{{\text{H}}_{\text{2}}}\text{OH}\] can be converted to \[\text{RC}{{\text{H}}_{\text{2}}}\text{C}{{\text{H}}_{\text{2}}}\text{COOH}\] by the following sequence of steps
A)
\[PB{{r}_{3}},KCN,{{H}_{3}}{{O}^{+}}\]
done
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B)
\[PB{{r}_{3}},KCN,{{H}_{2}}/{{P}^{+}}\]
done
clear
C)
\[KCN,{{H}_{3}}{{O}^{+}}\]
done
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D)
\[HCN,PB{{r}_{3}},{{H}_{3}}{{O}^{+}}\]
done
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View Answer play_arrow
question_answer 72) The major product P in the following reaction is\[C{{H}_{3}}-CH=C{{H}_{2}}\xrightarrow[peroxide]{HI}P\]
A)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}I\]
done
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B)
\[C{{H}_{3}}-\underset{\text{I}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{3}}\]
done
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C)
\[\underset{\text{I}}{\mathop{\underset{|}{\mathop{C}}\,}}\,{{H}_{2}}-CH=C{{H}_{2}}\]
done
clear
D)
\[\underset{\text{I}}{\mathop{\underset{|}{\mathop{C}}\,}}\,{{H}_{2}}-\underset{\text{I}}{\mathop{\underset{|}{\mathop{C}}\,}}\,{{H}_{2}}\]
done
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View Answer play_arrow
question_answer 73) Formation of cyanohydrin from a ketone is an example of
A)
electrophilic addition
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B)
nucleophilic substitution
done
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C)
nucleophilic addition
done
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D)
electrophilic substitution
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View Answer play_arrow
question_answer 74) Which of the following will exhibit cis-trans isomerism?
A)
\[C{{H}_{2}}BrC{{H}_{2}}Br\]
done
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B)
\[CB{{r}_{3}}C{{H}_{3}}\]
done
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C)
\[CHBr=CHBr\]
done
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D)
\[CB{{r}_{2}}=C{{H}_{2}}\]
done
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View Answer play_arrow
question_answer 75) How many primary amines are possible with the formula \[{{\text{C}}_{\text{4}}}{{\text{H}}_{\text{11}}}\text{N}\]?
A)
1
done
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B)
2
done
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C)
3
done
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D)
4
done
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View Answer play_arrow
question_answer 76) The IUPAC name of \[C{{H}_{3}}-CH=CH-C\equiv CH\]is
A)
pent-3-en-l-yne
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B)
pent-3-en-4-yne
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C)
pent-2-en-4-yne
done
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D)
pent-2-en-3-yne The IUPAC name of given compound is\[\underset{1}{\mathop{C}}\,{{H}_{3}}-\underset{pent\,-2-en-4-yne}{\mathop{\underset{2}{\mathop{C}}\,H=\underset{3}{\mathop{C}}\,H-\underset{4}{\mathop{C}}\,}}\,\equiv \underset{5}{\mathop{C}}\,-H\]
done
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View Answer play_arrow
question_answer 77) Which of the following will produce only one product on reduction with\[\text{LiAl}{{\text{H}}_{\text{4}}}\]?
A)
\[C{{H}_{3}}OCOC{{H}_{2}}C{{H}_{3}}\]
done
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B)
\[~C{{H}_{3}}C{{H}_{2}}OCOC{{H}_{2}}C{{H}_{3}}\]
done
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C)
\[C{{H}_{3}}C{{H}_{2}}OCOC{{H}_{3}}\]
done
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D)
\[C{{H}_{3}}C{{H}_{2}}OCOC{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\]
done
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View Answer play_arrow
question_answer 78) Which one of the following pairs gives effervescence with aq. \[\text{NaHC}{{\text{O}}_{\text{3}}}\]? \[\underset{(II)}{\mathop{\underset{C{{H}_{3}}COOC{{H}_{3}}}{\mathop{\underset{(I)}{\mathop{C{{H}_{3}}COCl}}\,}}\,}}\,\] \[\underset{(IV)}{\mathop{\underset{C{{H}_{3}}COOCOC{{H}_{3}}}{\mathop{\underset{(II)}{\mathop{C{{H}_{3}}COC{{H}_{3}}}}\,}}\,}}\,\]
A)
I and II
done
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B)
I and IV
done
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C)
II and III
done
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D)
I and III
done
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question_answer 79) Which of the following acids has the smallest dissociation constant?
A)
\[~C{{H}_{3}}CHFCOOH\]
done
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B)
\[~FC{{H}_{2}}C{{H}_{2}}COOH\]
done
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C)
\[BrC{{H}_{2}}C{{H}_{2}}COOH\]
done
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D)
\[C{{H}_{3}}CHBrCOOH\]
done
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View Answer play_arrow
question_answer 80) A tripeptide is written as glycine-alanine - glycine. The correct structure of the tripeptide 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 81) In guava, cucurbits flowers are
A)
hypogynous
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B)
epigynous
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C)
perigynous
done
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D)
Both and
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question_answer 82) In floral formula (K) denotes
A)
polysepalous
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B)
gamosepalous
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C)
polypetalous
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D)
gamopetalous
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question_answer 83) Which of the following is ideal for studying meiosis?
A)
Gamete
done
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B)
Pollen
done
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C)
Microsporangium
done
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D)
Root
done
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View Answer play_arrow
question_answer 84) To which of the following flower synandrous condition is found?
A)
Sunflower (Helianthus sp)
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B)
Gourd (Cucurbita sp)
done
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C)
Pea (Pisum sativum)
done
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D)
Lemon (Citrus sp)
done
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question_answer 85) Which of the following is photophospho-rylarion?
A)
Production of ATP from ADP
done
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B)
Production of NADP
done
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C)
Synthesis of ADP from ATP
done
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D)
Production of PGA
done
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View Answer play_arrow
question_answer 86) What is the structural element of cell wall?
A)
Matrix
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B)
Microtubules
done
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C)
Microfibrils
done
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D)
Arabinogalactans
done
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question_answer 87) Which chemical is used for induction of polyploidy?
A)
Cytokinin
done
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B)
Nitrous acid
done
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C)
Colchicine
done
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D)
IAA
done
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question_answer 88) In which book, Bentham and Hooker proposed their classification?
A)
Genera Plantarum
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B)
Species Plantarum
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C)
Historia Plantarum
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D)
Historia Naturae
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question_answer 89) When does a plant wilt?
A)
When phloem is blocked
done
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B)
When xylem is blocked
done
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C)
Pith is removed
done
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D)
A few leaves are removed
done
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question_answer 90) Which of the following sequence is a correct one foar meiotic cell cycle?
A)
\[{{G}_{1}}\to S\to {{G}_{2}}\to M\to {{G}_{1}}\]
done
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B)
\[{{G}_{1}}\to {{G}_{2}}\to M\to {{G}_{2}}\]
done
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C)
\[{{G}_{2}}\to {{G}_{1}}\to S\to M\to {{G}_{2}}\]
done
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D)
\[~S\to {{G}_{1}}\to {{G}_{2}}\to M\to S\]
done
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View Answer play_arrow
question_answer 91) In the following pairs, where do you get lignin in both the element?
A)
Tracheid and collenchyma
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B)
Sclerenchyma and sieve tube
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C)
Sclerenchyma and trachea
done
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D)
Parenchyma and endodennis
done
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question_answer 92) From which of the following, photosyntheric autotrophs receive their energy?
A)
Heat
done
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B)
Inorganic chemicals
done
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C)
Organic chemicals
done
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D)
Light
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View Answer play_arrow
question_answer 93) Study of pollen grain is called
A)
Ethmology
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B)
Palynology
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C)
Palaeobotany
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D)
\[\omega \]-raxonomy
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View Answer play_arrow
question_answer 94) A substance that induces dormancy of seed is
A)
ABA
done
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B)
GA
done
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C)
thio-urea
done
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D)
cytokinin
done
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question_answer 95) Plants purify air by which process?
A)
Photorespiration
done
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B)
Photosynthesis
done
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C)
Photophosphorylation
done
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D)
Transpiration
done
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question_answer 96) One of the characteristic of sieve tube is
A)
it is a part of phloem
done
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B)
function is transport of inorganic solutes
done
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C)
it is dead cell
done
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D)
sieve plate is not present
done
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View Answer play_arrow
question_answer 97) Chromosomes replicate in which stage of meiosis?
A)
Prophase-I
done
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B)
Prophase-II
done
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C)
Telophase-I
done
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D)
Interphase
done
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question_answer 98) Which one of the following conditions in chromosome number is called monosomy?
A)
2n + 1
done
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B)
2n + 2
done
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C)
2n - 1
done
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D)
2n - 2
done
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question_answer 99) Which one of the following statement correctly define the term homonym?
A)
Identical name of two different taxon
done
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B)
Two or more names belonging to the same taxon
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C)
When species name repeats the generic name
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D)
Other name of a taxon given in a language other than the language of zoological botanical nomenclature
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question_answer 100) Which of the following is called stress hormone?
A)
Absdsic add
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B)
Auxin
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C)
Cytokinin
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D)
Gibberellic add
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View Answer play_arrow
question_answer 101) Dimorphism of diloroplast is found in
A)
\[{{C}_{3}}\]plants
done
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B)
\[{{C}_{4}}-\] plants
done
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C)
CAM plants
done
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D)
Both and
done
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question_answer 102) Which of the following element is responsible for Minamata disease?
A)
Hg
done
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B)
Pb
done
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C)
Cd
done
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D)
Fe
done
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question_answer 103) Shorter generation dme of E. coli compared to eukaryotes may be explained on the basis of
A)
shape
done
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B)
large surface : volume ratio
done
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C)
presence of cell wall
done
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D)
absence of organelles
done
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question_answer 104) Division in a bacterial cell is carried out through
A)
multiple fission
done
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B)
binary fission
done
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C)
budding
done
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D)
plasmotomy
done
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question_answer 105) The Gram (-) bacteria detect and respond to the chemicals in their surroundings by
A)
muramic acid
done
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B)
lipopolysaccharide
done
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C)
volutin granules
done
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D)
porin
done
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question_answer 106) Mesoglia is seen in between
A)
ectoderm and endoderm
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B)
ectoderm and mesoderm
done
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C)
mesoderm and endoderm
done
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D)
just below mesoderm
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question_answer 107) Green gland is the excretory organ of
A)
prawn
done
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B)
butterfly
done
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C)
snail
done
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D)
earthworm
done
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question_answer 108) The parasite, which completes its life cycle in a single host is
A)
Fasciola hepatica
done
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B)
Plasmodium vivax
done
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C)
Taenia soiium
done
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D)
Ascaris lumbricoides
done
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View Answer play_arrow
question_answer 109) Name one disease of mulberry silkworm caused by Protozoa
A)
pebrine
done
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B)
graseri
done
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C)
flacheri
done
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D)
muscardine
done
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question_answer 110) Water vascular system is present in which of the following phylum?
A)
Porifera
done
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B)
Cnidaria
done
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C)
Ctenophora
done
clear
D)
Echinodennata
done
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question_answer 111) Which one of the following bacterium is used extensively as biopesticide?
A)
Bacillus subtilis
done
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B)
Bacillus thuringiensis
done
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C)
Streptococcus lactis
done
clear
D)
Lactobacillus acidophilus
done
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View Answer play_arrow
question_answer 112) Which one among the following is just a cloning plasmid not an expression plasmid?
A)
pBAD-18-Cam
done
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B)
pBCSK
done
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C)
pUC18
done
clear
D)
pET
done
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View Answer play_arrow
question_answer 113) Royal jelly is secreted from
A)
hypopharyngeal gland
done
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B)
salivary gland
done
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C)
milk gland
done
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D)
integumentary gland
done
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View Answer play_arrow
question_answer 114) Uver damage caused by excessive drinking of alcohol is called
A)
hepatitis
done
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B)
dematitis
done
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C)
liver cirrhosis
done
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D)
liver diarrhea
done
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question_answer 115) Pests which only feed and oviposit on crop are called
A)
major pests
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B)
minor pests
done
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C)
accidental pests
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D)
occasional pests
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question_answer 116) In which triploblastic animal, coelom is absent?
A)
Platyhelminthes
done
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B)
Asdielnunthes
done
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C)
Annelids
done
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D)
Arthropoda
done
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question_answer 117) Name one frequently used fungidde
A)
griseonuvin
done
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B)
chloramphenicol
done
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C)
cycocel
done
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D)
ethylene
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question_answer 118) Pith is absent in
A)
protostele
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B)
eustele
done
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C)
amphiphloic stele
done
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D)
ectophloic stele
done
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question_answer 119) Small particles projecting from the inner membranes and cristae of mitochondria are known as
A)
myeloid bodies
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B)
microsomes
done
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C)
infonnosomes
done
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D)
oxysomes
done
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question_answer 120) In which of the following phyla, compound eyes are present?
A)
Annelida
done
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B)
Arthropoda
done
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C)
Mollusca
done
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D)
Echinodennata
done
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question_answer 121) Seed habit originated in
A)
Bryophyta
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B)
Pteridophyta
done
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C)
Gymnosperms
done
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D)
Angiosperms
done
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question_answer 122) Which one of the following is the infective stage of Ascaris lumbricoides?
A)
Unsegmented egg
done
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B)
Egg with first stage larva
done
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C)
Egg with second stage larva
done
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D)
Free third stage larva
done
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question_answer 123) The father of green revolution in India is
A)
Calvin
done
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B)
Haberiandt
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C)
Norman Boriaug
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D)
Swaminathan
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question_answer 124) In which stage of its life cycle, the silk moth begins to produce silk fibre?
A)
3rd instar larva
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B)
4th instar larva
done
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C)
5th instar larva
done
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D)
Pupa
done
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question_answer 125) The vector of the kala- azar is
A)
Aedes sp
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B)
Anopheles stephenis
done
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C)
Culex fatigans
done
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D)
Phlebotomus sp
done
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question_answer 126) The resolving power of a compound light microscope will be greatest if the source of light is
A)
blue
done
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B)
green
done
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C)
yellow
done
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D)
red
done
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question_answer 127) Which of the following be named for DNA produced from RNA?
A)
A-DNA
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B)
B-DNA
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C)
C-DNA
done
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D)
Z-DNA
done
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question_answer 128) Which of the following is not a Green-house gas?
A)
\[{{N}_{2}}O\]
done
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B)
\[CFC\]
done
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C)
\[{{O}_{3}}\]
done
clear
D)
\[C{{O}_{2}}\]
done
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question_answer 129) India became a party to Convention on biological diversity in the year
A)
1994
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B)
1993
done
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C)
1992
done
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D)
1988
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question_answer 130) Increase of BOD in water leads to
A)
increase in the dissolved \[{{O}_{2}}\] concentration
done
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B)
decrease in the dissolved \[{{O}_{2}}\]concentration
done
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C)
maintenance of dissolved \[{{O}_{2}}\]concentration at the same level
done
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D)
no effect on dissolved \[{{O}_{2}}\]concentration
done
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question_answer 131) Freon gas causing stratospheric \[{{O}_{3}}\]depletion is mainly released from
A)
refrigerator
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B)
automobile
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C)
thermal power plant
done
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D)
steel industry
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question_answer 132) The equation \[\frac{\Delta {{N}_{n}}}{N\Delta t}\]represents, which of the following?
A)
Natality
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B)
Growth ray
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C)
Mortality
done
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D)
All of these
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question_answer 133) Identify which one of the following is an example, of incomplete ecosystem?
A)
Grassland
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B)
Cave
done
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C)
River
done
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D)
Wetland
done
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question_answer 134) Which of the following hormone helps in secretion of HCl from stomach?
A)
Renin
done
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B)
Gastrin
done
clear
C)
Secretin
done
clear
D)
Somatomedin
done
clear
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question_answer 135) Liquid, which collects in Bowmans capsule is
A)
water and sulphates
done
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B)
water and glycogen
done
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C)
plasma minus blood protein
done
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D)
concentrated urine
done
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question_answer 136) Diabetes insipidus is caused due to the lack of
A)
ADH
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B)
ACTH
done
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C)
insulin
done
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D)
glucagon
done
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question_answer 137) Downs syndrome occurs as a result of
A)
trisomy
done
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B)
tetrasomy
done
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C)
autopolyploidy
done
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D)
allopolyploidy
done
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question_answer 138) Which statement is incorrect for ion-channels?
A)
They are proteins
done
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B)
Movement through them is simple diffusion
done
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C)
Movement through them is from high to low concentration
done
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D)
All ions pass through the same type of channel
done
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question_answer 139) Quaternary structure of protein
A)
consists of four subunits
done
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B)
may be either \[\alpha \]or \[\beta \]
done
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C)
is unrelated to two functions of the protein
done
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D)
is dictated by the primary structures of the individual subunits
done
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question_answer 140) Primary and secondary active transport both
A)
generate ATP
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B)
use ATP directly
done
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C)
can move solutes against their concentration gradient
done
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D)
include the passive movement of glucose molecule.
done
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question_answer 141) Which type of membrane is most abundant within a cell?
A)
ER membrane
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B)
Nuclear membrane
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C)
Golgi membrane
done
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D)
Plasma membrane
done
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question_answer 142) Only one of the following four ways through which AIDS can spread?
A)
Infected needles and syringes
done
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B)
Through mosquito bites
done
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C)
Looking after AIDS patient
done
clear
D)
Shaking hands, coughing, sneezing, hugging
done
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question_answer 143) Passive immunity can be obtained through
A)
antigens
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B)
vaccines
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C)
antibiotics
done
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D)
antibodies
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question_answer 144) Pan of the brain concerned with the muscular movement is
A)
cerebellum
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B)
thalamus
done
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C)
Hippocampus
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D)
temporal lobe of cerebrum
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question_answer 145) Active immunity development is related to
A)
natural killer cells
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B)
memory cells
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C)
helper T cells
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D)
suppressor T cells
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question_answer 146) In human, corpus callosum connects
A)
the two optic lobes
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B)
bone and muscle
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C)
the two cerebral hemispheres
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D)
two lobes of pituitary gland
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question_answer 147) Brocas area of speech is present in
A)
frontal lobe
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B)
parietal lobe and partially in temporal lobe
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C)
temporal lobe
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D)
temporal and occipital lobe
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question_answer 148) Filariasis is caused by
A)
dead adult filariae
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B)
microfilariae
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C)
biting of filarial worm
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D)
presence of bacteria in filarial wall
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question_answer 149) Identify the sulphur containing ammo add
A)
proline
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B)
methionine
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C)
asparric acid
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D)
tryptophan
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question_answer 150) Which of the following statements is related to Starlings law of heart?
A)
Greater the stroke volume greater is the heart rate
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B)
Greater the initial length of the cardiac muscle fibre, more is the force of contraction of heart
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C)
Greater the minute volume, greater is the heart rate
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D)
Lesser the length of cardiac muscle fibre greater is the force of contraction of heart
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question_answer 151) Indicate, the inheritance of which of the following is controlled by multiple alleles?
A)
Colourblindness
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B)
Sickle cell anaemia
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C)
Blood group
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D)
Phenylketoneuria
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question_answer 152) Which of the following conditions is related to haemophilia?
A)
A responsible recessive gene present in the X-chromosome
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B)
A responsible dominant gene present in the X-chromosome
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C)
A responsible dominant gene present in the Y-chromosome
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D)
A responsible dominant gene present in the autosomal chromosome
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question_answer 153) The organ in the human body, where glycogenolysis cakes place?
A)
Muscle
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B)
Liver
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C)
Small intestine
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D)
Kidney
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question_answer 154) Which of the following carbohydrates is not a disaccharide?
A)
Maltose
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B)
Lactose
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C)
Sucrose
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D)
Galactose
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question_answer 155) The absence of which clotting factor leads to haemophilia - A?
A)
Factor VII
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B)
Factor VIII
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C)
Factor K
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D)
Factor X
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question_answer 156) Which of the following vitamins are fat soluble?
A)
A, B, C, K
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B)
A, B, D, E
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C)
A, D, E, K
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D)
A, D, C, K
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question_answer 157) In which method of transport, in plasma membrane does not require carrier molecule?
A)
Active transport
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B)
Facilitated diffusion
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C)
Simple diffusion
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D)
\[N{{a}^{+}}-\text{ }{{K}^{+}}\] pump
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question_answer 158) Which structure is present in both prokaryotic and eukaryotic plant cells?
A)
Cell wall
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B)
Nucleus
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C)
Chloroplast
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D)
Mitochondria
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question_answer 159) Oryza sativa is the binomial name of the rice plant, the sativa stands for
A)
specific name
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B)
specific epithet
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C)
species name
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D)
specific nomenclature
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question_answer 160) The first carbon dioxide fixation in \[{{C}_{4}}\] pathway occurs in chloroplasts of
A)
guard cells
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B)
mesophyll cells
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C)
bundle sheath cells
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D)
epidermal cells
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