question_answer 1) How many seconds are there in a light Fermi?
A)
\[{{10}^{-15}}s\]
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B)
\[3.0\times {{10}^{8}}s\]
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C)
\[3.33\times {{10}^{-24}}s\]
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D)
\[3.33\times {{10}^{-7}}s\]
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question_answer 2) A machine is delivering constant power to drive a body along a straight line. What is the relation between the distance travelled by the body against time?
A)
\[{{s}^{2}}\alpha {{t}^{3}}\]
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B)
\[{{s}^{2}}\alpha {{t}^{-3}}\]
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C)
\[{{s}^{2}}\alpha {{t}^{2}}\]
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D)
\[s\alpha {{t}^{3}}\]
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question_answer 3) The square of resultant of two equal forces is three times their product. Angle between the forces is
A)
\[\pi \]
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B)
\[\frac{\pi }{2}\]
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C)
\[\frac{\pi }{4}\]
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D)
\[\frac{\pi }{3}\]
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question_answer 4) An object placed on a ground is in stable equilibrium. If the object is given a slight push then initially the position of centre of gravity
A)
moves nearer to ground
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B)
rises higher above the ground
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C)
remains as such
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D)
may remain at same level
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question_answer 5) How much work must be done by a force on 50 kg body in order to accelerate it from rest to 20 m/s in 10 s ?
A)
\[{{10}^{3}}J\]
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B)
\[{{10}^{4}}J\]
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C)
\[2\times {{10}^{4}}J\]
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D)
\[4\times {{10}^{4}}J\]
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question_answer 6) Moment of inertia of circular loop of radius R about the axis of rotation parallel to horizontal diameter at a distance R/2 from it is
A)
\[M{{R}^{2}}\]
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B)
\[\frac{1}{2}M{{R}^{2}}\]
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C)
\[2M{{R}^{2}}\]
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D)
\[\frac{3}{4}M{{R}^{2}}\]
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question_answer 7) What will happen to the weight of the body at the South Pole, if the earth stops rotating about its polar axis?
A)
No change
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B)
Increases
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C)
Decreases but does not become zero
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D)
Reduces to zero
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question_answer 8) A beam of metal supported at the two ends is loaded at the centre. The depression at the centre is proportional to
A)
\[{{Y}^{2}}\]
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B)
Y
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C)
\[\frac{1}{Y}\]
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D)
\[\frac{1}{{{Y}^{2}}}\]
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question_answer 9) A common hydrometer reads specific gravity of liquids. Compared to the 1.6 mark of the stem the mark 1.5 will be
A)
upwards
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B)
downwards
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C)
in the same place
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D)
may be upward or downward depending upon the hydrometer
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question_answer 10) A balloon contains 500\[{{m}^{3}}\] of Heat 27°C and atmospheric pressure. The volume of Heat -3°C and 0.5 atmospheric pressure will be
A)
700\[{{m}^{3}}\]
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B)
900\[{{m}^{3}}\]
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C)
1000\[{{m}^{3}}\]
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D)
500\[{{m}^{3}}\]
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question_answer 11) Which of the following is different from others?
A)
Wavelength
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B)
Velocity
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C)
Frequency
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D)
Amplitude
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question_answer 12) Two pendulums have time periods T and 57/4. They starts SHM at the same time from the mean position. What will be the phase difference between them after the bigger pendulum completed one oscillation?
A)
\[45{}^\circ \]
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B)
\[90{}^\circ \]
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C)
\[60{}^\circ \]
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D)
\[30{}^\circ \]
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question_answer 13) A balloon is filled with hydrogen. For sound waves, this balloon behaves like
A)
a converging lens
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B)
a diverging lens
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C)
a concave mirror
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D)
None of these
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question_answer 14) Each of the two point charges are doubled and their distance is halved. Force of interaction becomes n times, where n is
A)
4
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B)
1
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C)
1/16
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D)
16
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question_answer 15) Two soap bubbles have radii in the ratio of 2:1. What is the ratio of excess pressures inside them?
A)
1 : 2
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B)
1 : 4
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C)
2 : 1
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D)
4 : 1
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question_answer 16) The phenomenon of Brownian movement may be taken as evidence of
A)
kinetic theory of matter
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B)
EMT of radiation
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C)
corpuscular theory of light
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D)
photoelectric phenomenon
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question_answer 17) Two sound waves of slightly different frequencies propagating in the same direction produce beats due to
A)
interference
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B)
diffraction
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C)
reflection
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D)
refraction
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question_answer 18) An ice block floats in a liquid whose density is less than water. A part of block is outside the liquid. When whole of ice has melted, the liquid level will
A)
rise
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B)
go down
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C)
remain same
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D)
first rise then go down
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question_answer 19) Two bodies of different masses of 2 kg and 4 kg moving with velocities 2 m/s and 10 m/s towards each other due to mutual gravitational attraction. What is the velocity of their centre of mass?
A)
5 m/s
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B)
6 m/s
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C)
8 m/s
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D)
Zero
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question_answer 20) Given that the displacement of an oscillating particle is given by \[y=A\sin (Bx+Ct+D).\] The dimensional formula for (ABCD) is
A)
\[\left[ {{M}^{0}}{{L}^{-1}}{{T}^{0}} \right]\]
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B)
\[\left[ {{M}^{0}}{{L}^{0}}{{T}^{-1}} \right]\]
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C)
\[\left[ {{M}^{0}}{{L}^{-1}}{{T}^{-1}} \right]\]
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D)
\[\left[ {{M}^{0}}{{L}^{0}}{{T}^{0}} \right]\]
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question_answer 21) Two waves having intensities in the ratio of 9:1 produce interference. The ratio of maximum to minimum intensity is equal to
A)
10 : 8
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B)
9 : 1
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C)
4 : 1
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D)
2 : 1
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question_answer 22) Four wires each of same length, diameter and material are connected to each other to form a square. If the resistance of each wire is R, then equivalent resistance across the opposite comersis
A)
R
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B)
R/2
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C)
R/4
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D)
none of these
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question_answer 23) An electric motor runs on DC source of emf 200 V and draws a current of 10 A. If the efficiency be 40% then the resistance of armature is
A)
2 \[\Omega \]
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B)
8 \[\Omega \]
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C)
12 \[\Omega \]
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D)
16 \[\Omega \]
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question_answer 24) A capacitor having capacity of 2.0\[\mu F\] is charged to 200 V and then the plates of the capacitor are connected to a resistance wire. The heat produced in joule will be
A)
\[2\times {{10}^{-2}}\]
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B)
\[4\times {{10}^{-2}}\]
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C)
\[4\times {{10}^{4}}\]
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D)
\[4\times {{10}^{10}}\]
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question_answer 25) A voltmeter of range 2V and resistance 300\[\Omega \]cannot be converted into ammeter of range
A)
1 A
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B)
1 mA
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C)
100 mA
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D)
10 mA
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question_answer 26) If a magnet is suspended at angle 30° to the magnetic meridian, the dip needle makes angle of 45° with the horizontal. The real dip is
A)
\[{{\tan }^{-1}}(\sqrt{3/2})\]
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B)
\[{{\tan }^{-1}}(\sqrt{3})\]
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C)
\[{{\tan }^{-1}}(\sqrt{3/2})\]
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D)
\[{{\tan }^{-1}}(2/\sqrt{3})\]
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question_answer 27) Which quantity is increased in step-down transformer?
A)
Current
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B)
Voltage
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C)
Power
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D)
Frequency
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question_answer 28) The ratio of intensity at the centre of a bright fringe to the intensity at a point distant one fourth of the distance between two successive bright fringes will be
A)
4
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B)
3
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C)
2
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D)
1
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question_answer 29) Which has more luminous efficiency?
A)
A 40 W bulb
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B)
A 40 W fluorescent tube
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C)
Both have same
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D)
cannot say
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question_answer 30) When a ray of light enters from one medium to another, then its velocity in second medium becomes double. The maximum value of angle of incidence, so that total internal reflection may not take place will be
A)
\[60{}^\circ \]
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B)
\[180{}^\circ \]
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C)
\[90{}^\circ \]
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D)
\[30{}^\circ \]
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question_answer 31) What should be the velocity of an electron so that its momentum becomes equal to that of a photon of wavelength \[5200\overset{\text{o}}{\mathop{\text{A}}}\,\]?
A)
700 m/s
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B)
1000 m/s
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C)
1400 m/s
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D)
2800 m/s
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question_answer 32) A radioactive element has half-life period of 600 years. After 3000 years, what amount will remain?
A)
\[\frac{1}{2}\]
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B)
\[\frac{1}{16}\]
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C)
\[\frac{1}{8}\]
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D)
\[\frac{1}{32}\]
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question_answer 33) Beyond which frequency, the ionosphere bends any incident electromagnetic radiation but do not reflect it back towards the earth?
A)
50 MHz
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B)
40 MHz
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C)
30 MHz
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D)
20 MHz
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question_answer 34) In intrinsic semiconductor at room temperature number of electrons and holes are
A)
equal
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B)
zero
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C)
unequal
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D)
infinite
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question_answer 35) The unit of thermal conductance is
A)
\[W{{K}^{-1}}\]
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B)
\[J{{K}^{-1}}\]
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C)
WK
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D)
JK
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question_answer 36) The value of P so that the vectors \[2\mathbf{\hat{i}}-\mathbf{\hat{j}}+\mathbf{\hat{k}},\mathbf{\hat{i}}+2\mathbf{\hat{j}}-3\mathbf{\hat{k}}\] and \[3\mathbf{\hat{i}}+P\mathbf{\hat{j}}+5\mathbf{\hat{k}}\] are coplanar should be
A)
16
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B)
-4
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C)
4
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D)
-8
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question_answer 37) A capacitor of capacitance C has charge Q and stored .energy is W. If the charge is increased to 2Q, the stored energy will be
A)
\[\frac{W}{4}\]
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B)
\[\frac{W}{2}\]
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C)
2 W
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D)
4 W
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question_answer 38) Pure silicon at 300 K has equal electron ne and whole\[({{n}_{h}})\] concentration of\[1.5\times {{10}^{16}}\,\,{{m}^{-3}}\]. Doping by indium increases \[{{n}_{h}}\]to \[\,\,4.5\times {{10}^{22}}\,\,{{m}^{-3}}\]. The \[{{n}_{e}}\] in the doped silicon is
A)
\[9\times {{10}^{5}}\]
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B)
\[5\times {{10}^{9}}\]
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C)
\[2.25\times {{10}^{11}}\]
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D)
\[3\times {{10}^{19}}\]
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question_answer 39) A cylindrical conductor is placed near another positively charged conductor. The net charge acquired by the cylindrical conductor will be :
A)
positive only
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B)
negative only
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C)
zero
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D)
either positive or negative
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question_answer 40) If the unit of force is 1 kilo newton, the length is km and time 100 s, what will be the unit of mass?
A)
1,000 kg
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B)
1kg
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C)
10,000 kg
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D)
100 kg
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question_answer 41) The maximum tension which an in extensible ring of mass 0.1 kg/m can bear is 10 N. The maximum velocity in m/s with which it can be rotated is
A)
10
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B)
\[\sqrt{10}\]
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C)
20
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D)
15
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question_answer 42) If there were a reduction in gravitational effect, which of the following forces do you think would change in some respect?
A)
Magnetic force
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B)
Electrostatic force
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C)
Viscous force
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D)
Archimedes uplift
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question_answer 43) The breaking force for a wire of diameter D of a material is F. The breaking force for a wire of the same material of radius D is
A)
F
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B)
2F
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C)
\[\frac{F}{4}\]
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D)
4F
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question_answer 44)
A uniformly tapering vessel is filled with a liquid of density \[900\text{ }kg/{{m}^{3}}.\] The force that acts on the base of the vessel due to the liquid is\[(g=10\text{ }m/{{s}^{2}})\]
A)
3.6 N
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B)
7.2 N
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C)
9.0 N
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D)
14.4 N
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question_answer 45) If pressure of a gas contained in a closed vessel is increased by 0.4% when heated by \[1{}^\circ C\], its initial temperature must be
A)
250 K
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B)
\[250{}^\circ C\]
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C)
2500 K
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D)
\[25{}^\circ C\]
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question_answer 46) Lines of force due to earths horizontal magnetic field are
A)
parallel and straight
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B)
concentric circles
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C)
elliptical
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D)
curved lines
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question_answer 47) Two thermometers are constructed in the same way except that one has a spherical bulb and the other a cylindrical bulb, which one will respond quickly to temperature changes?
A)
Spherical bulb thermometer
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B)
Cylindrical bulb thermometer
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C)
Both equally
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D)
None of the above
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question_answer 48) What is the fractional change in tension necessary in a sonometer of fixed length to produce a note one octave lower than before?
A)
\[\frac{1}{4}\]
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B)
\[\frac{1}{2}\]
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C)
\[\frac{2}{3}\]
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D)
\[\frac{3}{4}\]
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question_answer 49) If battery of 6 V is connected to the terminals of three metre long wire of uniform thickness and resistance of the order of 100 ohm, the difference of potential between two points separated by 50 cm in the wire will be
A)
1V
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B)
1.5 V
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C)
2 V
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D)
3 V
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question_answer 50) In an electromagnetic wave, the electric and magnetising fields are 100 V/m and 0.265 A/m. The maximum energy flow is
A)
26.5 W/\[{{m}^{2}}\]
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B)
36.5 W/\[{{m}^{2}}\]
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C)
46.7 W/\[{{m}^{2}}\]
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D)
765 W/\[{{m}^{2}}\]
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question_answer 51) Ethyl acetate is obtained when methyl magnesium bromide reacts with
A)
ethyl formate
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B)
ethyl chloroformate
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C)
acetyl chloride
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D)
carbon dioxide
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question_answer 52) The most stable hydride is
A)
\[N{{H}_{3}}\]
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B)
\[P{{H}_{3}}\]
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C)
\[As{{H}_{3}}\]
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D)
\[Sb{{H}_{3}}\]
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question_answer 53) The ratio of amounts of \[{{H}_{2}}S\]needed to precipitate all the metal ions from 100 mL of \[1M\,\,AgN{{O}_{3}}\]and 100 mL of 1M \[CuS{{O}_{4}}\] will be
A)
\[1:1\]
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B)
\[1:2\]
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C)
\[2:1\]
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D)
none of these
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question_answer 54) If the electronegativity difference between two atoms A and B is 2.0, then the percentage of co-valent character in the molecule is
A)
54%
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B)
46%
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C)
23%
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D)
72%
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question_answer 55) Which of the following reaction defines \[\Delta H_{f}^{o}\]?
A)
\[{{C}_{(diamond)}}+{{O}_{2}}(g)\xrightarrow{{}}C{{O}_{2}}(g)\]
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B)
\[\frac{1}{2}{{H}_{2}}(g)+\frac{1}{2}{{F}_{2}}(g)\xrightarrow{{}}HF(g)\]
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C)
\[{{N}_{2}}(g)+3{{H}_{2}}(g)\xrightarrow{{}}2N{{H}_{2}}(g)\]
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D)
\[CO(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}C{{O}_{2}}(g)\]
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question_answer 56) Formaldehyde polymerizes to form glucose according to the reaction\[6HCHO\rightleftharpoons {{C}_{6}}{{H}_{12}}{{O}_{6}}\] The theoretically computed equilibrium constant for this reaction is found to be \[6\times {{10}^{22}}\] If 1 M solution of glucose dissociates according to the above equilibrium, the concentration of formaldehyde in the solution will be
A)
\[1.6\times {{10}^{-2}}M\]
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B)
\[1.6\times {{10}^{-4}}M\]
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C)
\[1.6\times {{10}^{-6}}M\]
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D)
\[1.6\times {{10}^{-8}}M\]
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question_answer 57) The electronic configuration of a dispositive ion \[{{M}^{2+}}\] is 2, 8, 14 and its mass number is 56. The number of neutrons present is
A)
32
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B)
42
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C)
30
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D)
34
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question_answer 58) If X is the total number of collisions which a gas molecule register with others per unit time under particular conditions, then the collision frequency of the gas containing N molecules per unit volume is
A)
X/N
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B)
NX
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C)
2 NX
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D)
NX/2
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question_answer 59) A hypothetical reaction \[{{A}_{2}}+{{B}_{2}}\to 2AB\] follows the mechanism as given below, \[{{A}_{2}}\rightleftharpoons A+A(fast)\] \[A+{{B}_{2}}\xrightarrow{{}}AB+B(slow)\] \[A+B\xrightarrow{{}}AB(fast)\] The order of the overall reaction is
A)
\[2\]
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B)
\[1\]
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C)
\[1\frac{1}{2}\]
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D)
\[0\]
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question_answer 60) The mass of helium atom of mass number 4 is 4.0026 amu, while that of the neutron and proton are 1.0087 and 1.0078 respectively on the same scale. Hence, the nuclear binding energy per nucleon in the helium atom is nearly
A)
\[5MeV\]
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B)
\[7MeV\]
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C)
\[10MeV\]
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D)
\[14MeV\]
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question_answer 61) Which of the following statements is correct? Dielectric constant of
A)
increases with dilution
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B)
decreases with dilution
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C)
is unaffected on dilution
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D)
None of the above
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question_answer 62) For the square planar complex [M] (where, M = central metal and a, b, c and d are mono dentate ligands), the number of possible geometrical isomers are
A)
1
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B)
2
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C)
3
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D)
4
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question_answer 63) Potash alum dissolves in water to give a/an
A)
acidic solution of \[{{H}_{2}}S{{O}_{4}}\]
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B)
alkaline solution
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C)
acidic solution of \[HCl\]
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D)
neutral solution
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question_answer 64) The discovery of which of the following group of elements gave death blow to the Newlands law of octaves?
A)
Inert gases
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B)
Alkaline earths
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C)
Rare earths
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D)
Actinides
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question_answer 65) Vant Hoff factor more than unity indicates that the solute in solution has
A)
dissociated
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B)
associated
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C)
Both (a) and (b)
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D)
cannot say anything
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question_answer 66) How many number of atoms are there in a cube based unit cell having one atom on each corner and two atoms on each body diagonal of cube?
A)
8
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B)
6
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C)
4
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D)
9
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question_answer 67) Bleeding due to a cut can be stopped by applying ferric chloride solution in the laboratory. This is due to
A)
co-agulation of negatively charged blood particles by \[F{{e}^{3+}}\] ions
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B)
co-agulation of positively charged blood particles by \[C{{l}^{-}}\] ions
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C)
reaction taking place between ferric ions and the haemoglobin forming a complex
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D)
common element, iron, in both \[FeC{{l}_{3}}\] and haemoglobin.
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question_answer 68) Which one of the following solutions will have highest conductivity?
A)
\[0.1M\,C{{H}_{3}}COOH\]
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B)
\[0.1M\,NaCl\]
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C)
\[0.1M\,KN{{O}_{3}}\]
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D)
\[0.1M\,HCl\]
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question_answer 69) One of the following metals forms a volatile compound and this property is taken advantage for its extraction. This metal is
A)
iron
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B)
nickel
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C)
cobalt
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D)
tungsten
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question_answer 70) If \[N{{a}^{+}}ion\] is larger than \[M{{g}^{2+}}\] ion and \[{{S}^{2-}}\]ion is larger than CF ion, which of the following will be stable soluble in water?
A)
Sodium chloride
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B)
Sodium sulphide
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C)
Magnesium chloride
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D)
Magnesium sulphide
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question_answer 71) Impurities of Cu and Ag from gold are removed by
A)
boiling impure gold with dil. \[{{H}_{2}}S{{O}_{4}}\]
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B)
boiling impure gold with cone. \[{{H}_{2}}S{{O}_{4}}\]
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C)
electrolytically
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D)
Both (a) and (b)
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question_answer 72) Which of the following salt would give \[S{{O}_{2}}\] with hot and dil. \[{{H}_{2}}S{{O}_{4}}\] and also decolourises \[B{{r}_{2}}\] water?
A)
\[N{{a}_{2}}S{{O}_{3}}\]
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B)
\[NaHS{{O}_{4}}\]
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C)
\[N{{a}_{2}}S{{O}_{4}}\]
done
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D)
\[N{{a}_{2}}S\]
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question_answer 73) If two compounds have the same empirical formula but different molecular formulae, they must have
A)
different percentage composition
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B)
different molecular weights
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C)
same viscocity
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D)
same vapour density
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question_answer 74) Among the following which one has weakest carbon-halogen bond?
A)
Benzyl bromide
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B)
Bromobenzene
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C)
Vinyl bromide
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D)
Benzyl chloride
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question_answer 75) Petrochemicals can be used to prepare
A)
synthetic fibres
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B)
pesticides
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C)
plastics
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D)
all of these
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question_answer 76) tert-butyl methyl ether on heating with anhydrous HI in ether gives
A)
\[C{{H}_{3}}OH+{{(C{{H}_{3}})}_{3}}Cl\]
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B)
\[C{{H}_{3}}I+{{(C{{H}_{3}})}_{3}}COH\]
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C)
\[C{{H}_{3}}I+{{(C{{H}_{3}})}_{3}}Cl\]
done
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D)
None of the above
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question_answer 77) The correctly reported answer of the addition of 4.523, 2.3 and 6.24 will have significant figures
A)
two
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B)
three
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C)
four
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D)
five
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question_answer 78) What happens if \[CC{{l}_{4}}\] is treated with \[AgN{{O}_{3}}\]?
A)
A white ppt. of \[AgCl\] will form
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B)
\[N{{O}_{2}}\] will be evolved
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C)
\[CC{{l}_{4}}\] will dissolve in \[AgN{{O}_{3}}\]
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D)
Nothing will happen
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question_answer 79) \[^{23}Na\] is more stable isotope of Na. Find out the process by which \[_{11}^{24}Na\] can undergo radioactive decay
A)
\[{{\beta }^{-}}\] emission
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B)
\[\alpha \] -emission
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C)
\[{{\beta }^{+}}\] emission
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D)
K electron capture
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question_answer 80) The heat of combustion of solid benzoic acid at constant volume is \[-321.30kJ\] at \[{{27}^{o}}C\]. The heat of combustion at constant pressure is
A)
\[-321.30-300R\]
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B)
\[-321.30+300R\]
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C)
\[-321.30-150R\]
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D)
\[-321.30-900R\]
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question_answer 81) In which of the following compounds -OH group is least reactive?
A)
done
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B)
done
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C)
done
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D)
All are equally reactive.
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question_answer 82) lodoform is obtained when ethanol is heated with
A)
\[KI\]and aq \[KOH\]
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B)
\[{{I}_{2}}\] and aq \[KOH\]
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C)
\[{{I}_{2}}\]/ aq \[KI\]
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D)
\[HI\] and \[HI{{O}_{3}}\]
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question_answer 83) The total number of acylic isomers including the stereoisomers (geometrical and optical), with the molecular formula \[{{C}_{4}}{{H}_{7}}Cl\] is
A)
12
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B)
11
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C)
10
done
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D)
9
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question_answer 84) The alkyl halides that can be made by free radical halogenation of alkanes are
A)
RCl, and RBr but not RF or RI
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B)
RF. RCl and RBr but not RI
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C)
RF, RCl, RBr, RI
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D)
RF, RCl and RI but RBr
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question_answer 85) Silica is a/an
A)
acidic flux only
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B)
gangue only
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C)
basic flux only
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D)
both gangue and acidic flux
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question_answer 86) The nodes present in 3p-orbitals are
A)
one spherical, one planar
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B)
two spherical
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C)
two planar
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D)
one planar
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question_answer 87) The number of a-and p-particles emitted in nuclear reaction \[_{90}T{{h}^{228}}{{\xrightarrow{{}}}_{83}}B{{i}^{212}}\] are respectively
A)
4, 1
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B)
3, 7
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C)
8, 1
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D)
4, 7
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question_answer 88) Two bottles A and B contains 1 M and 1 m aqueous solution of sulphuric acid respectively
A)
A is more concentrated than B
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B)
B is more concentrated than A
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C)
concentration of A is equal to concentration of B
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D)
it is not possible to compare the concentrations
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question_answer 89) A salt on treatment with dil. \[HCl\] gives a pungent smelling gas and a yellow precipitate. The sak gives green flame test and a yellow precipitate with potassium chromate the salt is
A)
\[NiS{{O}_{4}}\]
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B)
\[Ba{{S}_{2}}{{O}_{3}}\]
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C)
\[Pb{{S}_{2}}{{O}_{3}}\]
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D)
\[CuS{{O}_{4}}\]
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question_answer 90) Which of the oxide of manganese is 1 amphoteric?
A)
\[Mn{{O}_{2}}\]
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B)
\[M{{n}_{2}}{{O}_{3}}\]
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C)
\[M{{n}_{2}}{{O}_{7}}\]
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D)
\[MnO\]
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question_answer 91) Which of the following alkenes is most reactive , towards cationic polymerization?
A)
\[C{{H}_{2}}=CHC{{H}_{3}}\]
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B)
\[C{{H}_{2}}=CH-C{{H}_{2}}OH\]
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C)
\[C{{H}_{3}}-CO-C{{H}_{3}}\]
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D)
\[C{{H}_{2}}=CH-O-C{{H}_{3}}\]
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question_answer 92) An organic compound, \[{{C}_{3}}{{H}_{6}}O\] does not give a precipitate with 2, 4-dinitrophenyl hydrazine reagent and does not react with metallic sodium, It could be
A)
\[C{{H}_{3}}-C{{H}_{2}}-CHO\]
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B)
\[C{{H}_{2}}=CH-C{{H}_{2}}OH\]
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C)
\[C{{H}_{3}}-CO-C{{H}_{3}}\]
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D)
\[C{{H}_{2}}=CH-O-C{{H}_{3}}\]
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question_answer 93) Oxidation of 1-butene with hot \[KMn{{O}_{4}}\] solution produces
A)
\[C{{H}_{3}}C{{H}_{2}}COOH+HCOOH\]
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B)
\[C{{H}_{3}}C{{H}_{2}}COOH+C{{O}_{2}}\]
done
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C)
\[C{{H}_{3}}COOH+C{{O}_{2}}\]
done
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D)
\[{{(C{{H}_{3}})}_{2}}C=O+C{{O}_{2}}\]
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View Answer play_arrow
question_answer 94) A mixture of 1-chlorobutane and 2-chloro- butane when treated with alcoholic \[KOH\] gives
A)
1-butene
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B)
2-butene
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C)
isobutylene
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D)
mixture of 1-butene + 2-butene
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question_answer 95)
Out of the two compounds shown below, the vapour pressure of B at a particular temperature is expected to be and
A)
higher than that of A
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B)
lower than that of B
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C)
same as that of A
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D)
can be higher or lower depending upon the size of the vessel.
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question_answer 96) Roasted tin stone ore after washing with water is known as
A)
block tin
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B)
white tin
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C)
black tin
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D)
granulated tin
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question_answer 97) Which of the following has strongest hydrogen bonding ?
A)
Ethylamine
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B)
Ammonia
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C)
Ethyl alcohol
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D)
Diethyl ether
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question_answer 98) Consider the following statements The race law for the acid catalysed hydrolysis of an ester being given as \[Rate=k[{{H}^{+}}][ester]=k[ester]\]. If the acid concentration is doubled at constant ester concentration 1. The second order rate constant, k is doubled. 2. The pseudo first order rate constant, k is doubled. 3. The rate of the reaction is doubled Which of the above statements are correct?
A)
1 and 2
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B)
2 and 3
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C)
1 and 3
done
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D)
1, 2 and 3
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question_answer 99) A fibrous mineral which can withstand red hot flames without any damage is
A)
talc
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B)
glass wool
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C)
soap stone
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D)
asbestos
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question_answer 100) When \[{{o}^{-}}\] or p-phenolsulphonic acid is treated with bromine water, the product formed is
A)
2, 4-dibromophenol
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B)
2, 4, 6-tribromophenol
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C)
3-bromophenol boric acid
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D)
3, 5-dibromophenol
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question_answer 101) The book Genera plantarum was written by
A)
Bessey
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B)
Hutchinson
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C)
Engler and Pranti
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D)
Bentham and Hooker
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question_answer 102) Which of the following is not a true fish?
A)
Dogfish
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B)
Devilfish
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C)
Catfish
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D)
Sawfish
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question_answer 103) During mitosis, the number of chromosomes get
A)
change
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B)
no change
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C)
may be change if cell is mature
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D)
may be change if cell is immature
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question_answer 104) During transcription, the DNA site at which RNA polymerase binds is called:
A)
promoter
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B)
regulator
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C)
receptor
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D)
enhancer
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question_answer 105) Bacteria do not possess
A)
capsule
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B)
ribosome
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C)
mitochondria
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D)
plasma membrane
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question_answer 106) Thermal cycler is used in this reaction
A)
radioactivity
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B)
enzyme catalysed
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C)
chemical reactions
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D)
PCR
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question_answer 107) Sporozoite, infectious stage of Plasmodium parasite contains
A)
two nucleus and a vacuole
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B)
one nucleus and several vacuoles
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C)
vacuoles and chloroplasts
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D)
a nucleus
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question_answer 108) The shape of chromosome is determined by
A)
centrosome
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B)
centromere
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C)
chromomere
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D)
telomere
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question_answer 109) Heteroneries stage is
A)
transformation of sexual individual into asexual
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B)
sexually matured with two regions atoke and epitoke
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C)
sexually immatured with two regions etoke
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D)
and epitoke
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question_answer 110) All of the above In Funaria, calypu-a is derived from
A)
capsule
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B)
columella
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C)
antheridium
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D)
archegonium
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question_answer 111) Biologically most resistant plant material is
A)
lignin
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B)
curin
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C)
suberin
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D)
sporopollenin
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question_answer 112) Which of the following techniques other than microscopy is used for the study of cell?
A)
Plasmolysis
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B)
Maceration
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C)
Chromatography
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D)
Auto-radiography
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question_answer 113) Earthworms have no special sense organs. Sdll they are sensitive to
A)
touch and sound
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B)
light and sound
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C)
touch, taste and sound
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D)
touch, taste and light
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question_answer 114) What will be the gametic chromosome number in a cell, if somatic cells have 40 chromosomes?
A)
10
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B)
20
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C)
30
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D)
40
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question_answer 115) The ATP production in photosynthesis is called
A)
phototropism
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B)
phosphorylation
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C)
photooxidation
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D)
photophosphorylation
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question_answer 116) Duramen of heart wood is
A)
region of pericycle
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B)
another name of cambium
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C)
inner region of secondary wood
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D)
outer region of secondary wood
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question_answer 117) The term heterosis was first used by
A)
Shull
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B)
NE Borlaug
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C)
MS Swaminachan
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D)
R Mishra
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question_answer 118) The larva of Bombyx mori is
A)
cocoon
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B)
nymph
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C)
caterpillar
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D)
trochophore
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question_answer 119) Gemmule formation in sponges is helpful in
A)
sexual reproduction
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B)
asexual reproduction
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C)
only dissemination
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D)
None of the above
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question_answer 120) Organs not similar in structure and origin but perform the same function
A)
homologous structures
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B)
analogous structures
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C)
adaptive structures
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D)
variable structures
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question_answer 121) In Dryopteris, the opening mechanism of sporangium is effectively operated by
A)
stalk
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B)
annulus
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C)
stomium
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D)
peristome
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question_answer 122) Tunica corpus theory is used for
A)
shoot apex
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B)
root apex
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C)
leaf apex
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D)
Both (a) and (b)
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question_answer 123) The part of earth and atmosphere supporting life is
A)
biota
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B)
biome
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C)
ecotone
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D)
biosphere
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question_answer 124) Lenticels and hydathodes are small pores with which of the following common attributes?
A)
They allow exchange of gases
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B)
Their opening and closing is not regulated
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C)
They always remain closed
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D)
They are found on the same organ of plants
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question_answer 125) Chloragogen cells of earthworms are analogous to vertebrate
A)
lungs
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B)
liver
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C)
gut
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D)
kidney
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question_answer 126) Change in one base in mRNA leading to termination of polypeptide is known as which type of mutations ?
A)
Sense
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B)
None-sense
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C)
Gibberish
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D)
Framshift
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question_answer 127) Taenia solium derives its energy from the breakdown of
A)
nucleic acids
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B)
amino acids
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C)
glycogen
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D)
glycerol
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question_answer 128) Which of the following hormone is produced during leaf fall ?
A)
ABA
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B)
Cytokinin
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C)
Florigen
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D)
Vemalin
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question_answer 129) Which fish selectively feed on larva of mosquito?
A)
Gambusia
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B)
Rohu
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C)
Glorias
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D)
Exocoetus
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question_answer 130) Lomentum is a term used to describe a kind of
A)
fruit
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B)
seed
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C)
inflorescence
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D)
outgrowth from seed
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question_answer 131) House-fly possesses
A)
two pairs of wings
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B)
one pair of wings
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C)
three pairs of wings
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D)
None of the above
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question_answer 132) Sunken stomata are found in
A)
Nerium
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B)
Hydrilla
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C)
mango
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D)
None of these
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question_answer 133) Which fish has an electric organ?
A)
Torpedo
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B)
Rhinoceros
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C)
Scoiiodon
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D)
Cat fish
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question_answer 134) Three most abundant elements in protoplasm are
A)
carbon, sodium and hydrogen
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B)
carbon, hydrogen and \[{{O}_{2}}\]
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C)
nitrogen, carbon and \[{{O}_{2}}\]
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D)
carbon, phosphorus and oxygen
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question_answer 135) Genetically engineered bacteria is used for the production of
A)
thyroxin
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B)
human insulin
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C)
epinephrine
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D)
cortisol
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question_answer 136) Inulin is a
A)
lipid
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B)
protein
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C)
human insulin
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D)
polysaccharide
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question_answer 137) Jumping genes in maize were discovered by
A)
Hugo de Vries
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B)
TH Morgan
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C)
Barbara McClintock
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D)
Mendel
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question_answer 138) Which of the following is not a pentose sugar?
A)
arabinose
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B)
xylose
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C)
xylulose
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D)
mannose
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question_answer 139) Nucleolus is the site for the synthesis of
A)
DNA
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B)
m RNA
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C)
t RNA
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D)
ribosomes
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question_answer 140) Which of the following statement is not true?
A)
Animal cells never contain chloroplast unlike many plant cells
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B)
Animal cells contain ultrascopic chloroplast while plant ceils contain microscopic chloroplast
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C)
Plant cells have cellulosic cell wall while animal cells do not
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D)
Plant cells have central vacuoles while animal-cells do not
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question_answer 141) Which of the following factor controls the human population density ?
A)
Industry
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B)
Climate
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C)
Communication
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D)
Natural resources
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question_answer 142) Chromosomal aberration is due to
A)
aneuploidy
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B)
polyploidy
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C)
physical effects
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D)
All of these
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question_answer 143) What used to described as Nisei granules in a nerve cell are now identified as
A)
cell metabolites
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B)
fat granules
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C)
ribosomes
done
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D)
mitochondria
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question_answer 144) Ageing of an animal body is associated with deterioration in its
A)
connective tissue
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B)
glandular tissue
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C)
epithelial tissue
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D)
Both (a) and (b)
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question_answer 145) Photochemical smog always contains
A)
\[{{O}_{3}}\]
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B)
\[C{{H}_{4}}\]
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C)
\[CO\]
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D)
\[P{{O}_{4}}\]
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question_answer 146) The posterior end of Ancylostoma has
A)
anus
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B)
curved tail
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C)
bursa
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D)
caudal spine
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question_answer 147) Quantasomes are found in
A)
mitochondria
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B)
chloroplast
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C)
lysosome
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D)
endoplasmic reticulum
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question_answer 148) In Ptinus, male cone bears a large number of
A)
ligules
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B)
anthers
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C)
microsporophylls
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D)
megasporophyus
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question_answer 149) Hydroponics is a
A)
airless culture
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B)
waterless culture
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C)
soilless culture
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D)
None of these
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question_answer 150) Lysosomes are formed by
A)
endoptasmic reticulum
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B)
mitocliondrion
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C)
Golgi membrane
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D)
Both (a) and (b)
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question_answer 151) Nissls granules are characteristic of
A)
muscle tissue
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B)
connective tissue
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C)
nerve tissue
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D)
epithelial tissue
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question_answer 152) Gastric vacuoles are analogous to the
A)
peroxisomes
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B)
alimentary canal of higher animals
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C)
mouth of higher animals
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D)
liver of higher animals
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question_answer 153) Genetic information is carried by long chain macromolecules made up of
A)
amino acids
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B)
nucleotides
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C)
chromosomes
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D)
enzymes
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question_answer 154) Fertilization of ovum in human being occur in
A)
fallopian tube
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B)
cervix
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C)
fundus
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D)
All of these
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question_answer 155) Which one are correcrely marched?
A)
Vitamin-E-tocopherol
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B)
Vitamin-D-riboflavin
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C)
Vitamin-B-calciferol
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D)
Vitamin-A-thiamine
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question_answer 156) Believers in spontaneous generation theory assumed that
A)
organisms arose only from other similar organisms
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B)
organisms could arise only from air
done
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C)
organisms arose-from non-living material
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D)
organisms always arise from air
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question_answer 157) Half-life period of \[{{C}^{14}}\]is
A)
500 years
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B)
5000 years
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C)
50 years
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D)
\[5\times {{10}^{4}}\]years
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question_answer 158) Maximum number of plasmids discovered so far
A)
50 kilo base
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B)
500 kilo base
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C)
5000 kilo base
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D)
5 kilo base
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question_answer 159) The lyric enzymes released by sperm is
A)
acrosome
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B)
ligase
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C)
androgamone
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D)
hyaluronidase
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question_answer 160) Transfer of genes from one gene pool to another is called
A)
speciation
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B)
genetic drift
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C)
gene flow
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D)
mutation
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question_answer 161) A material which arrests cell division, is obtained from
A)
Crocus
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B)
Colchicum
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C)
Dalbergia
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D)
Chrysanthemum
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question_answer 162) Chromosomes in a bacterial cell can be 1-3 in number and
A)
are always circular
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B)
are always linear
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C)
can be either circular or linear, but never both within the same cell
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D)
can be circular as well as linear within the same cell
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question_answer 163) Example of an aggregate fruit is
A)
Pyrus malus
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B)
Ananas sativus
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C)
Annona squamosal
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D)
Artocarpits integrifolia
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question_answer 164) Identify the edible freshwater teleoscs
A)
sharks
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B)
rays and skates
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C)
Hifsa hilsa
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D)
Catia catia
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question_answer 165) The blood cell which shows phagocytosis is
A)
monocyte
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B)
barsophil
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C)
eosinophil
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D)
platelets
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question_answer 166) In angiosperms, which of the following part is triploid?
A)
Zygote
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B)
Endosperm
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C)
Archegonia
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D)
Coralloid root
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question_answer 167) Mitochondria are often seen aggregated around
A)
food vacuole
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B)
contractile vacuole
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C)
water vacuole
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D)
All of these
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question_answer 168) Addisons disease results from
A)
hypertrophy of gonad
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B)
hyposecretion of adrenal cortex
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C)
hyperactivity of leydig cells
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D)
None of the above
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question_answer 169) Main difference between active and passive transport across cell membrane is that
A)
active transport occurs more rapidly than passive
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B)
passive transport is non-selective
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C)
passive transport is confined to anions and cations
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D)
passive transport requires a concentration gradient across the membrane, whereas active transport requires metabolic energy
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question_answer 170) Which statement is correct for muscle- contraction?
A)
Length of H zone decreases
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B)
Length of A band decreases
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C)
Length of I band remain constant
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D)
Length of two Z line increases
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question_answer 171) Aleurone layer helps in
A)
growth
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B)
nutrition
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C)
protection
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D)
water absorption
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question_answer 172) Internal cork disease in apple is due to the deficiency of
A)
iron
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B)
copper
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C)
boron
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D)
phosphorus
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question_answer 173) When an animal turns sideways to the Sun to get the maximum amount of Sun on its flanks, this is an example of:
A)
motivation
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B)
habitation
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C)
posture
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D)
orientation
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question_answer 174) The main components of plasma membrane are
A)
lipids and proteins
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B)
lipids, proteins and carbohydrates
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C)
lipids only
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D)
proteins only
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question_answer 175) Pollination by insects is called
A)
zoophily
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B)
chiropterophily
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C)
anemophily
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D)
entomophily
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question_answer 176) The genetic material in fX174 is
A)
single stranded DNA
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B)
single stranded RNA
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C)
double stranded DNA
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D)
double stranded RNA
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question_answer 177) The pH of stomach ranges between
A)
7.1 to 8.2
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B)
7.6 to 8.6
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C)
1.5 to 2.0
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D)
6.8 to 7.2
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question_answer 178) Removal of ring wood of tissue outside the vascular cambium from the tree trunk kills it because
A)
water cannot move up
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B)
food does not travel down and roots become starved
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C)
shoot become starved
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D)
annual ring are not produced
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question_answer 179) The high amount of E. coil in water is an indicator of
A)
hardness of water
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B)
industrial pollution
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C)
sewage pollution
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D)
presence of chlorine in water
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question_answer 180) Which of the following connects glycolysis to Krebs cycle ?
A)
Acetyl Co-A
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B)
Ribozyme
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C)
Cyrochrome oxidase
done
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D)
N-acetyl glucosamine
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question_answer 181) Which of the following theory explain structure of protoplasm?
A)
Surface tension theory
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B)
Colloidal theory
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C)
Sol-gel theory
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D)
Viscosity theory
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question_answer 182) An insect without metamorphosis is
A)
silver fish
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B)
cray fish
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C)
bedbug
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D)
pediculus
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question_answer 183) Lichens show
A)
mutualism
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B)
commensalism
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C)
parasitism
done
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D)
saprophytism
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question_answer 184) In which of the following animal anal tail is found?
A)
Earthworm
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B)
Lower invertebrates
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C)
Scorpion
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D)
Snake
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question_answer 185) Which of the following statements is true?
A)
All enzymes are proteins
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B)
All proteins are enzymes
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C)
All enzymes are not proteins
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D)
All enzymes and hormones are proteins
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question_answer 186) This is not the cell of areolar tissue
A)
macrophages
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B)
Schwann cell
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C)
plasma cell
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D)
adipose cell
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question_answer 187) Anaerobic respiration after glycolysis is called
A)
restoration
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B)
fermentation
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C)
multiplication
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D)
fragmentation
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question_answer 188) Portuguese man of war is
A)
Obelia
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B)
Pennatula
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C)
Coral
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D)
Physalia
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question_answer 189) In photosynthesis, photolysis of water is useful for
A)
reduction of NADP
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B)
oxidation of NADP
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C)
oxidation of FAD
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D)
None of the above
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question_answer 190) Liquid food drinking is
A)
imbibition
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B)
pinocytosis
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C)
phagocytosis
done
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D)
None of these
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question_answer 191) Terminating codons are also called
A)
initiating codons
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B)
stop signals
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C)
central dogma
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D)
None of these
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question_answer 192) A pome fruit is said to be false because
A)
the pericarp is inconspicuous
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B)
the endocarp is cartilaginous
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C)
fruit is derived from superior ovary
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D)
fruit is present in fleshy edible thalamus
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question_answer 193) In photosynthesis, the light energy is utilized in
A)
convening ATP into ADP
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B)
converting \[C{{H}_{3}}\] into \[{{C}_{2}}{{H}_{5}}OH\]
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C)
converting ADP into ATP
done
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D)
converting \[C{{O}_{2}}\] into carbohydrate
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question_answer 194) Receptors of sensation produced when a person eats red chillies are located on which part of tongue?
A)
Tip
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B)
Base
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C)
Side
done
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D)
None of these
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question_answer 195) In which of the following haemocyanin pigment is found?
A)
Annelida
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B)
Echinodennata
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C)
Insects
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D)
Lower invertebrates
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question_answer 196) Photosystem-II occurs in
A)
grana
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B)
stroma
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C)
entire chloroplast
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D)
chloroplast membrane
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question_answer 197) When a cluster of genes show linkage behavior they
A)
do not show a chromosome map
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B)
show recombination during meiosis
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C)
do not show independent assortment
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D)
induce cell division
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question_answer 198) What is the function of centrosome?
A)
Cell division
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B)
Cell plate formation
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C)
Cell differentiation
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D)
Cell wall formation
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question_answer 199) Keratinization of the skin is prevented by
A)
vitamin-A
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B)
vitamin-B
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C)
vitamin-C
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D)
vitamin-D
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question_answer 200) Christmas disease is another name for
A)
haemophilia-B
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B)
hepatitis-B
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C)
Downs syndrome
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D)
sleeping sickness
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