question_answer 1) A body is projected at such angle that the horizontal range is three times the greatest height. The .angle of projection is
A)
\[{{42}^{o}}8\]
done
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B)
\[{{53}^{o}}7\]
done
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C)
\[{{33}^{o}}7\]
done
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D)
\[{{25}^{o}}8\]
done
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question_answer 2) A gas bubble formed from an explosion under water oscillates with a period T proportional to\[{{P}^{a}}{{d}^{b}}{{E}^{c}}\], where P is pressure, d is the density of water and E is the total energy of explosion. The value of a, b, c are
A)
\[a=1\], \[b=1,\,\,c=2\]
done
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B)
\[a=1\], \[b=2,\,\,c=1\]
done
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C)
\[a=\frac{5}{6}\], \[b=\frac{1}{2},c=\frac{1}{3}\]
done
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D)
\[a=-\frac{5}{6},b=\frac{1}{2},c=\frac{1}{3}\]
done
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question_answer 3) A particle moving with a uniform acceleration travels 24m and 64m in the first two consecutive interval of 4 s each. Its initial velocity will be
A)
5 m/s
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B)
3m/s
done
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C)
1 m/s
done
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D)
4 m/s
done
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question_answer 4) Two equal vectors have a resultant equal to either of them, then the angle between them will be
A)
\[{{120}^{o}}\]
done
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B)
\[{{110}^{o}}\]
done
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C)
\[{{60}^{o}}\]
done
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D)
\[{{150}^{o}}\]
done
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question_answer 5) If the radius of earth of R then the height h at which the value of g becomes one fourth, will be
A)
\[\frac{R}{8}\]
done
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B)
\[\frac{3R}{8}\]
done
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C)
\[\frac{3R}{4}\]
done
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D)
\[\frac{R}{2}\]
done
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question_answer 6) A body moves a distance of 10 m along a straight line under a action of 5 N force. If work done is 25 J, then angle between the force and direction of motion of the body will be
A)
\[{{75}^{o}}\]
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B)
\[{{60}^{o}}\]
done
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C)
\[{{45}^{o}}\]
done
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D)
\[{{30}^{o}}\]
done
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question_answer 7) If 150 J of heat is added to a system and the work done by the system is 110 J, then change in internal energy will be
A)
40 J
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B)
110 J
done
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C)
150 J
done
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D)
260 J
done
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question_answer 8) Sum-of the two binary numbers \[{{(100010)}_{2}}\] and \[{{(11011)}_{2}}\] is
A)
\[{{(111111)}_{2}}\]
done
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B)
\[{{(101111)}_{2}}\]
done
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C)
\[{{(111001)}_{2}}\]
done
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D)
\[{{(111101)}_{2}}\]
done
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question_answer 9)
What is the velocity of the bob of a simple pendulum at its mean position, if it is able to rise to vertical height of 10 cm? \[(g=9.8\,\,m/{{s}^{2}})\]
A)
2.2 m/s
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B)
1.8 m/s
done
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C)
1.4 m/s
done
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D)
0.6 m/s
done
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question_answer 10) A body cools from \[{{60}^{o}}C\] to \[{{50}^{o}}C\] in 10 min. If the room temperature is \[{{25}^{o}}C\] and assuming Newton law of cooling to hold good, the temperature of the body at the end of the next 10 min will be
A)
\[{{45}^{o}}C\]
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B)
\[{{42.85}^{o}}C\]
done
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C)
\[{{40}^{o}}C\]
done
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D)
\[{{38.5}^{o}}C\]
done
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question_answer 11) At \[{{27}^{o}}C\] a gas suddenly compressed such that its pressure becomes \[\frac{1}{8}th\] of original pressure. The temperature of the gas will be \[(\gamma =5/3)\]
A)
\[-{{142}^{o}}C\]
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B)
300 K
done
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C)
\[{{327}^{o}}C\]
done
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D)
420 K
done
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question_answer 12) An ideal refrigerator has a freezer at a temperature of \[-{{13}^{o}}C\]. The coefficient o performance of the engine is 5. The temperature of the air (to which heat is rejected) will be
A)
\[{{325}^{o}}C\]
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B)
325 K
done
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C)
\[{{39}^{o}}C\]
done
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D)
\[{{320}^{o}}C\]
done
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question_answer 13) In a capacitor of capacitance 20\[\mu F\] the distance between the plates is 2 mm. If a dielectric slab of width 1 mm and dielectric constant 2 is inserted between the plates, then the new capacitance will be
A)
22\[\mu F\]
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B)
26.6 \[\mu F\]
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C)
52.2 \[\mu F\]
done
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D)
13 \[\mu F\]
done
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question_answer 14) An automobile spring extends 0.2 m for 5000 N load. The ratio of potential energy stored in this spring when it has been compressed by 0.2 m to the potential energy stored in a 10 \[\mu F\]capacitor at a potential difference of 10000 V will be
A)
1/4
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B)
1
done
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C)
1/2
done
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D)
2
done
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question_answer 15) A solid metallic sphere has a charge + 3Q. Concentric with this sphere is a conducting spherical shell having charge - Q. The radius of the sphere is a and that of the spherical shell is\[b(b>a)\]. What is the electric field at a distance \[R(a<R<b)\] from the centre?
A)
\[\frac{4Q}{2\pi \,{{\varepsilon }_{0}}{{R}^{2}}}\]
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B)
\[\frac{3Q}{4\pi \,{{\varepsilon }_{0}}{{R}^{2}}}\]
done
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C)
\[\frac{3Q}{2\pi \,{{\varepsilon }_{0}}{{R}^{2}}}\]
done
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D)
\[\frac{Q}{2\pi \,{{\varepsilon }_{0}}R}\]
done
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question_answer 16)
Output Y is given by :
A)
\[(\overline{X}\,.\,\,\overline{Y})\,.\,\,Z\]
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B)
\[(X\,.\,\,Y)\,.\,\,Z\]
done
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C)
\[(X\,+\,Y)\overline{Z}\]
done
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D)
\[(\overline{X}\,.\,\overline{Y}+\overline{Z}\]
done
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question_answer 17)
In a network as shown in the figure, the potential difference across the resistance 2R is (the cell has an emf of £ volts and has no internal resistance)
A)
2E
done
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B)
\[\frac{4E}{7}\]
done
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C)
\[\frac{E}{7}\]
done
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D)
E
done
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question_answer 18) The resistance of a galvanometer coil is R, then the shunt resistance required to convert it into a ammeter of range 4 times, will be
A)
4R
done
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B)
\[\frac{R}{3}\]
done
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C)
\[\frac{R}{4}\]
done
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D)
\[\frac{R}{5}\]
done
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question_answer 19) The instrument used by doctors for endoscopy works on the principle of
A)
total internal reflection
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B)
reflection
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C)
refraction
done
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D)
none of the above
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question_answer 20) A meter stick is held vertically with one end on the floor and is then allowed to fall. Assuming that the end on the floor the stick does not slip, the velocity of the other end when it hits the floor, will be
A)
10.8 m/s
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B)
5.4 m/s
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C)
2.5 m/s
done
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D)
none of these
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question_answer 21) If the coefficient of static friction between the tyres and road is 0.5, what is the shortest distance in which an automobile can be stopped when travelling at 72 km/h?
A)
50 m
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B)
60 m
done
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C)
40.8 m
done
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D)
80.16 m
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question_answer 22) A bullet fired at an angle of \[{{30}^{o}}\] with the horizontal hits the ground 3 km away. By adjusting its angle of projection, can one hope to hit a target 5 km, away. Assume the muzzle speed to be same and the air resistance is negligible
A)
possible to hit a target 5 km away
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B)
not possible to hit a target 5 km away
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C)
prediction is not possible
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D)
none of the above
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question_answer 23) Two springs of spring constant 1500 N/m and 3000 N/m respectively are stretched with the same force. They will have potential energy in ratio
A)
1 : 2
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B)
2 : 1
done
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C)
1 : 4
done
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D)
4 : 1
done
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question_answer 24) The elastic energy stored in a wire of Youngs modulus Y is
A)
\[\frac{1}{2}Y\times \] stress x strain \[\times \] volume
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B)
\[\frac{{{(stress)}^{2}}\times volume}{2Y}\]
done
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C)
stress \[\times \]strain \[\times \] volume
done
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D)
\[Y\times \frac{{{(stress)}^{2}}}{volume}\]
done
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question_answer 25) A soap bubble A of radius 0.03 and another bubble B of radius 0.04 m are brought together so that the combined bubble has a common interface of radius r, then the value of r is
A)
0.24m
done
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B)
0.48m
done
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C)
0.12m
done
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D)
none of these
done
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question_answer 26) An air bubble of radius \[{{10}^{-2}}\] m is rising up at a steady rate of \[2\times {{10}^{-3}}\]m/s through a liquid of ,density \[1.5\times {{10}^{3}}kg/{{m}^{3}}\], the coefficient of viscosity neglecting the density of air, will be \[(g=10\,\,m/{{s}^{2}})\]
A)
23.2 units
done
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B)
83.5 units
done
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C)
334 units
done
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D)
167 units
done
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question_answer 27) A Carnot reversible engine converts 1/6 of heat input into work. When the temperature of the sink is reduced by 62 K, the efficiency of Carnots cycle becomes 1/3. The temperature of the source and sink will be
A)
372 K, 310 K
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B)
181 K, 150 K
done
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C)
472 K, 410 K
done
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D)
none of the above
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question_answer 28) The ratio of the coefficient of thermal conductivity of two different materials is 5 : 3. If the thermal resistance of the rods of same thickness of these materials is same, then the ratio of the length of these rods will be
A)
3 : 5
done
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B)
5 : 3
done
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C)
3 : 4
done
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D)
3 : 2
done
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question_answer 29) Compressional wave pulses are sent to the bottom of sea from a ship and the echo is heard after 2 s. If bulk modulus of elasticity of water is \[2\times {{10}^{9}}N/{{m}^{2}}\] and mean temperature is \[{{4}^{o}}C\], the depth of the sea will be
A)
1014 m
done
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B)
1414 m
done
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C)
2828 m
done
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D)
none of these
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question_answer 30) Sound waves of \[f=600\] Hz fall normally on a perfectly reflecting wall. The shortest distance from the wall at which all particles will have maximum amplitude of vibration will be (speed of sound = 300 m/s)
A)
\[\frac{7}{8}\]m
done
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B)
\[\frac{3}{8}\]m
done
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C)
\[\frac{1}{8}\]m
done
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D)
\[\frac{1}{4}\]m
done
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question_answer 31) A pipe closed at one end produces a fundamental note of 412 Hz. It is cut into two pieces of equal length the fundamental notes produced by the two pieces are
A)
824 Hz, 1648 Hz
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B)
412 Hz, 824 Hz
done
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C)
206 Hz, 412 Hz
done
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D)
216 Hz, 824 Hz
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question_answer 32) The refractive index of water and glycerine are 1.33 and 1.47 respectively. What is the critical angle for a light ray going from the later to the former?
A)
\[{{60}^{o}}48\]
done
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B)
\[{{64}^{o}}48\]
done
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C)
\[{{74}^{o}}48\]
done
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D)
None of these
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question_answer 33) Lenses of power 3 D and -5D are combined to form a compound lens. An object is placed at a distance or 50 cm from this lens. Its image will be formed at a distance from the lens, will be
A)
25 cm
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B)
20 cm
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C)
30 cm
done
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D)
40 cm
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question_answer 34) If fringes width \[\lambda =5.89\times {{10}^{-5}}cm\] is 0.431 mm and shift of white central fringe on introducing a mica sheet in one path is 1.89 mm. Thickness of the mica sheet will be \[(\mu =1.59)\]
A)
\[4.38\times {{10}^{-6}}m\]
done
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B)
\[5.38\times {{10}^{-6}}m\]
done
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C)
\[6.38\times {{10}^{-6}}m\]
done
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D)
none of these
done
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question_answer 35) A body is orbiting around earth at a mean radius which is two times as greater as the parking orbit of a satellite, the period of body is
A)
4 days
done
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B)
16 days
done
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C)
\[2\sqrt{2}\]days
done
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D)
64 days
done
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question_answer 36) A radioactive substance has half-life of 60 min. During 3 h, the fraction of the substance that has to be decayed, will be
A)
87.5%
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B)
52.5%
done
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C)
25.5%
done
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D)
8.5%
done
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question_answer 37) Voltage in the secondary coil of a transformer does not depend upon
A)
frequency of the source
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B)
voltage in the primary coil
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C)
ratio of number of turns in the two coils
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D)
both [b] and [c]
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question_answer 38) When n-p-n transistor is used as an amplifier
A)
electrons move from emitter to base
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B)
electrons move from base to emitter
done
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C)
electrons move from collector to base
done
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D)
holes move from base to emitter
done
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question_answer 39) \[_{7}{{N}^{14}}\] is bombarded with \[_{2}H{{e}^{4}}\]. The resulting nucleus is \[_{8}{{O}^{17}}\] with the emission of
A)
neutrino
done
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B)
antineutrino
done
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C)
proton
done
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D)
neutron
done
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question_answer 40)
In the given figure the steady state current in the circuit i&
A)
zero
done
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B)
0.6 A
done
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C)
0.9 A
done
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D)
1.5 A
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question_answer 41) The time of vibration of a dip needle vibration in the vertical plane in the magnetic meridian is 3 s. When the same magnetic needle is made to vibrate in the horizontal plane, the time of vibration is \[3\sqrt{2}\]s. Then angle of dip will be
A)
\[{{90}^{o}}\]
done
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B)
\[{{60}^{o}}\]
done
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C)
\[{{45}^{o}}\]
done
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D)
\[{{30}^{o}}\]
done
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question_answer 42) The inductance of the oscillatory circuit of a radio station is 10 mH and its capacitance is 0.25\[\mu F\]. Taking the effect of resistance negligible, wavelength of the broadcasted waves will be (velocity of light\[3.0\times {{10}^{8}}\,m/s,\,\pi =3.14\])
A)
\[9.42\times {{10}^{4}}\,m\]
done
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B)
\[18.8\times {{10}^{4}}\,m\]
done
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C)
\[4.5\times {{10}^{4}}\,m\]
done
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D)
none of these
done
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question_answer 43) The \[{{K}_{\alpha }}\] line of singly ionised calcium has a wavelength of 393.3 nm as measured on earth. In the spectrum of one of the observed galaxies, the spectral line is located at 401.8 nm. The speed with which this galaxy is moving away from us, will be
A)
7400 m/s
done
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B)
\[32.4\times {{10}^{2}}\]m/s
done
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C)
6480 km/s
done
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D)
none of these
done
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question_answer 44) In a common-base circuit of a transistor, current amplification factor is 0.95. The base current when emitter current is 2 mA, will be
A)
0.2 mA
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B)
0.1 mA
done
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C)
0.002 mA
done
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D)
none of these
done
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question_answer 45) Cathode rays of velocity \[{{10}^{6}}\] m/s describe an approximate circular path of radius 1 m in an electric field 300 V/cm. If the velocity of the cathode rays are doubled. The value of electric field so that the rays describe the same circular path, will be
A)
2400 V/cm
done
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B)
600 V/cm
done
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C)
1200 V/cm
done
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D)
12000 V/cm
done
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question_answer 46) Light of wavelength 5000 A falling on a sensitive surface. If the surface has received \[{{10}^{-7}}J\] of energy, then the number of photons falling on the surface will be
A)
\[5\times {{10}^{11}}\]
done
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B)
\[2.5\times {{10}^{11}}\]
done
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C)
\[3\times {{10}^{11}}\]
done
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D)
none of these
done
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question_answer 47) An X-ray machine is opearated at 40 kV. The short wavelength limit of continuous X-rays will be (\[h=6.63\times {{10}^{-34}}Js,\,c=3\times {{10}^{8}}m/s\]\[,\,e=1.6\times {{10}^{-19}}C\])
A)
0.31 \[\overset{o}{\mathop{A}}\,\]
done
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B)
0.62 \[\overset{o}{\mathop{A}}\,\]
done
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C)
0.155 \[\overset{o}{\mathop{A}}\,\]
done
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D)
0.62 \[\overset{o}{\mathop{A}}\,\]
done
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question_answer 48) The wavelength of the first spectral line of sodium is 5896\[\overset{o}{\mathop{A}}\,\]. The first excitation potential of sodium atom will be \[(h=6.63\times {{10}^{-34}}Js)\]
A)
4.2V
done
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B)
3.5V
done
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C)
2.1V
done
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D)
none of these
done
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question_answer 49) If 200 MeV energy is released in the fission of a single nucleus of\[_{92}{{U}^{235}}\]. How many fissions must occur per second to produce a power of 1kW?
A)
\[3.125\times {{10}^{13}}\]
done
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B)
\[6.25\times {{10}^{13}}\]
done
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C)
\[1.525\times {{10}^{13}}\]
done
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D)
None of these
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question_answer 50) The energy supplied to calculate by state electricity board during an average November day was 40 mkh. If this energy could be obtained by the conversion of matter, how much mass will be annihilated?
A)
3.2 g
done
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B)
6.4 g
done
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C)
1.6 g
done
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D)
2.5 g
done
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question_answer 51) Which one of the following represents noble gas configuration?
A)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{d}^{10}}\], \[5{{s}^{2}},5{{p}^{6}}5{{d}^{6}},6{{s}^{2}}\]
done
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B)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{5}}\], \[5{{s}^{2}},5{{p}^{6}}5{{d}^{1}},6{{s}^{2}}\]
done
clear
C)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{d}^{10}}\], \[5{{s}^{2}}5{{p}^{6}}\]
done
clear
D)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{f}^{14}}\], \[5{{s}^{2}}5{{p}^{6}}5{{d}^{1}}\]
done
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question_answer 52) The number of unpaired electrons in \[Ni{{(CO)}_{4}}\]is
A)
0
done
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B)
1
done
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C)
3
done
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D)
4
done
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question_answer 53) Nitrobenzene on treatment with zinc dust and aqueous ammonium chloride gives
A)
\[{{C}_{6}}{{H}_{5}}-N=N-{{C}_{6}}{{H}_{5}}\]
done
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B)
\[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]
done
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C)
\[{{C}_{6}}{{H}_{5}}NO\]
done
clear
D)
\[{{C}_{6}}{{H}_{6}}NHOH\]
done
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question_answer 54) Which one of the following is a correct statement?
A)
All metal nitrates are insoluble in water
done
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B)
Solubility depends on temperature
done
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C)
All metal nitrates are soluble in water
done
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D)
All metal nitrates are soluble in alcohol
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question_answer 55) Methyl-\[\alpha \]-D-glucoside and methyl-\[\beta \]-D glucoside are
A)
epimers
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B)
anomers
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C)
enantiomers
done
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D)
conformational diastereomers
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question_answer 56) Which one of the following shows maximum value of paramagnetic behavior?
A)
\[{{[Sc{{(CN)}_{6}}]}^{3-}}\]
done
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B)
\[{{[Co{{(CN)}_{6}}]}^{3-}}\]
done
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C)
\[{{[Fe{{(CN)}_{6}}]}^{4-}}\]
done
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D)
\[{{[Cr{{(CN)}_{6}}]}^{3-}}\]
done
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question_answer 57) Carbolic acid is
A)
\[HCOOH\]
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B)
\[C{{H}_{3}}COOH\]
done
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C)
\[{{C}_{6}}{{H}_{5}}COOH\]
done
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D)
\[{{C}_{6}}{{H}_{5}}OH\]
done
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question_answer 58) The solubility product of \[BaC{{l}_{2}}\] is \[4\times {{10}^{-9}}\]. Its solubility in mol/L is
A)
\[4\times {{10}^{-3}}\]
done
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B)
\[4\times {{10}^{-9}}\]
done
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C)
\[1\times {{10}^{-3}}\]
done
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D)
\[1\times {{10}^{-9}}\]
done
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question_answer 59) Which one can differentiate between \[{{C}_{2}}{{H}_{5}}OH\] and \[C{{H}_{3}}OH\]?
A)
\[{{H}_{2}}O\]
done
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B)
\[N{{a}_{2}}C{{O}_{3}}+{{I}_{2}}\]
done
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C)
\[N{{H}_{3}}\]
done
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D)
\[HCl\]
done
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question_answer 60) Zinc and cold dil. \[HN{{O}_{3}}\] reacts to produce
A)
NO
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B)
\[N{{O}_{2}}\]
done
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C)
\[N{{H}_{4}}N{{O}_{3}}\]
done
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D)
\[ZnN{{O}_{3}}\]
done
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question_answer 61) For the reaction, \[{{H}_{2}}+{{I}_{2}}2HI\], the equilibrium concentration of \[{{H}_{2}},\,{{I}_{2}}\] and HI are 8.0, 3.0 and 28.0 mol/L respectively. The equilibrium constant is
A)
28.34
done
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B)
32.66
done
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C)
34.78
done
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D)
38.88
done
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question_answer 62) Tincture of iodine is
A)
aqueous solution of \[{{I}_{2}}\]
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B)
solution of \[{{I}_{2}}\] in aqueous KI
done
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C)
alcoholic solution of \[{{I}_{2}}\]
done
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D)
aqueous solution of KI
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question_answer 63) The chemical formula of plaster of Paris is
A)
\[CaS{{O}_{4}}.\frac{1}{2}{{H}_{2}}O\]
done
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B)
\[CaS{{O}_{4}}.\,{{H}_{2}}O\]
done
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C)
\[CaS{{O}_{4}}.\,2{{H}_{2}}O\]
done
clear
D)
\[CaS{{O}_{4}}.\,3{{H}_{2}}O\]
done
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View Answer play_arrow
question_answer 64) Which one of the following has square planar structure?
A)
\[{{[Ni{{(CN)}_{4}}]}^{2-}}\]
done
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B)
\[[Ni{{(CO)}_{4}}]\]
done
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C)
\[{{[Ni{{(Cl)}_{4}}]}^{2-}}\]
done
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D)
All of the above
done
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question_answer 65) The oxidation number of chromium in potassium dichromate is
A)
+2
done
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B)
+4
done
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C)
+6
done
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D)
+8
done
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question_answer 66) The electronic configuration of most electronegative elements is
A)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{5}}\]
done
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B)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{4}},3{{s}^{1}}\]
done
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C)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{1}}3{{p}^{1}}\]
done
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D)
\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{5}}\]
done
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View Answer play_arrow
question_answer 67) The molecular formula \[{{C}_{3}}{{H}_{9}}N\] cannot represent
A)
Famine
done
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B)
\[{{2}^{o}}\]amine
done
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C)
\[{{3}^{o}}\]amine
done
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D)
quaternary salt
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question_answer 68) The bond length between \[C-C\] bond in \[s{{p}^{2}}\] hybridised molecule is
A)
\[1.2\overset{o}{\mathop{A}}\,\]
done
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B)
\[1.39\overset{o}{\mathop{A}}\,\]
done
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C)
\[1.33\overset{o}{\mathop{A}}\,\]
done
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D)
\[1.54\overset{o}{\mathop{A}}\,\]
done
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question_answer 69) The energy ratio of a photon of wavelength \[3000\overset{o}{\mathop{A}}\,\] and \[6000\overset{o}{\mathop{A}}\,\] is
A)
1 : 1
done
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B)
2 : 1
done
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C)
1 : 2
done
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D)
1 : 4
done
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question_answer 70) Gas equation \[PV=nRT\] is obeyed by ideal gas in
A)
adiabatic process
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B)
isothermal process
done
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C)
both [a] and [b]
done
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D)
none of the above
done
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View Answer play_arrow
question_answer 71) Clemmensens reduction of ketones is carried out in
A)
\[LiAl{{H}_{4}}\] in \[{{H}_{2}}O\]
done
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B)
glycol and \[KOH\]
done
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C)
Zn-Hg and \[HCl\]
done
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D)
\[{{H}_{2}}\] and Pd catalyst
done
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View Answer play_arrow
question_answer 72) The planar structure of \[B{{F}_{3}}\] can be explained by the fact that \[B{{F}_{3}}\] is
A)
sp-hybridised
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B)
\[s{{p}^{2}}\]-hybridised
done
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C)
\[s{{p}^{3}}\]-hybridised
done
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D)
\[s{{p}^{3}}\] hybridized
done
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question_answer 73) Reduction of aniline with acetyl chloride in presence of \[NaOH\] produce
A)
aniline hydrochloride
done
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B)
acetanilide
done
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C)
p-chloroaniline
done
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D)
a red dye
done
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question_answer 74) Which of the following compounds has the highest boiling point?
A)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Cl\]
done
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B)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}Cl\]
done
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C)
\[C{{H}_{3}}CH(C{{H}_{3}})C{{H}_{2}}Cl\]
done
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D)
\[{{(C{{H}_{3}})}_{3}}CCl\]
done
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question_answer 75) An unknown compound D first oxidised to aldehyde and then acetic acid by a dilute solution of \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] and \[{{H}_{2}}S{{O}_{4}}\]. The compound D is
A)
\[C{{H}_{3}}OH\]
done
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B)
\[{{C}_{2}}{{H}_{5}}OH\]
done
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C)
\[C{{H}_{3}}C{{H}_{2}}COOH\]
done
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D)
\[C{{H}_{2}}C{{H}_{2}}CHO\]
done
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question_answer 76) Which of the following is not possible?
A)
\[n=2,\,l=1,\,\,m=0\]
done
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B)
\[n=2,\,l=0,\,\,m=-1\]
done
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C)
\[n=3,\,l=0,\,\,m=0\]
done
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D)
\[n=3,\,l=1,\,\,m=-1\]
done
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View Answer play_arrow
question_answer 77) A gas expands isothermally against a constant external pressure of 1 atm from a volume of \[10\,\,d{{m}^{3}}\]to a volume of \[20\,\,d{{m}^{3}}\]. It absorbs 300 J of thermal energy from its surroundings. The \[\Delta U\] is
A)
-312J
done
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B)
+123J
done
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C)
-213J
done
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D)
+ 231 J
done
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View Answer play_arrow
question_answer 78) Phenol is more acidic than alcohol because
A)
phenol is more soluble in polar solvents
done
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B)
alcohol does not lose hydrogen atom
done
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C)
phenoxide ion is stabilised by resonance
done
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D)
phenoxide ion do not exhibit resonance
done
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View Answer play_arrow
question_answer 79) The element having highest electron affinity is
A)
bromine
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B)
iodine
done
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C)
fluorine
done
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D)
chlorine
done
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View Answer play_arrow
question_answer 80) Bakelite is prepared by the reaction between
A)
phenol and formaldehyde
done
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B)
urea and formaldehyde
done
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C)
ethylene and glycol
done
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D)
tetramethylene and glycol
done
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question_answer 81) Which one of the following is a conjugated protein?
A)
Phosphoprotein
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B)
Glycoprotein
done
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C)
Chromoprotein
done
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D)
All of the above
done
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question_answer 82) Iodine test is shown by
A)
glucose
done
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B)
starch
done
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C)
glycogen
done
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D)
polypeptide
done
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question_answer 83) A fruity smell is obtained by the reaction of ethanol with
A)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
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B)
\[PC{{l}_{5}}\]
done
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C)
\[C{{H}_{3}}COOH\]
done
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D)
\[C{{H}_{3}}CHO\]
done
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View Answer play_arrow
question_answer 84) Cyanide process is used for extraction of
A)
Ag
done
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B)
Ni
done
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C)
Pt
done
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D)
Zn
done
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View Answer play_arrow
question_answer 85) An acid solution of 0.005 M has a pH of 5. The degree of ionisation of acid is
A)
\[0.1\times {{10}^{-2}}\]
done
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B)
\[0.2\times {{10}^{-2}}\]
done
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C)
\[0.5\times {{10}^{-4}}\]
done
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D)
\[0.6\times {{10}^{-6}}\]
done
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View Answer play_arrow
question_answer 86) Which metal gives hydrogen gas on heating with hot concentrated alkali?
A)
Ag
done
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B)
Ni
done
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C)
Zn
done
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D)
Cu
done
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View Answer play_arrow
question_answer 87) The conversion of ethyl chloride into diethyl ether takes place by
A)
Williamsons synthesis
done
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B)
Perkins reaction
done
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C)
Wurtz reaction
done
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D)
Grignard reaction
done
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View Answer play_arrow
question_answer 88) \[CHC{{l}_{3}}+{{C}_{6}}{{H}_{5}}N{{H}_{2}}+3NaOH\xrightarrow{{}}A\]\[+3B+3C\] In the above reaction, the product A is
A)
chlorobenzene
done
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B)
phenyl isocyanide
done
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C)
phenyl cyanide
done
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D)
phenyl chloride
done
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View Answer play_arrow
question_answer 89) A gas is found to have a formula \[{{[CO]}_{x}}\]. Its vapour density is 70, the \[x\] is
A)
3.0
done
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B)
3.5
done
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C)
5.0
done
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D)
6.5
done
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question_answer 90) Which of the following is used as purgative?
A)
\[HgS\]
done
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B)
\[H{{g}_{2}}C{{l}_{2}}\]
done
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C)
\[HgC{{l}_{2}}\]
done
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D)
\[ZnS{{O}_{4}}\]
done
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View Answer play_arrow
question_answer 91) Least stable oxide of chlorine is
A)
\[C{{l}_{2}}O\]
done
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B)
\[Cl{{O}_{2}}\]
done
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C)
\[C{{l}_{2}}{{O}_{7}}\]
done
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D)
\[Cl{{O}_{3}}\]
done
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View Answer play_arrow
question_answer 92) The sides of safety matches contains
A)
red phosphorus + sand powder
done
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B)
\[{{P}_{4}}{{S}_{3}}\]
done
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C)
\[C{{a}_{3}}{{(PO)}_{4}}+\] glass pieces
done
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D)
\[KCl{{O}_{3}},\,KN{{O}_{3}}\], sulphur + antimony
done
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View Answer play_arrow
question_answer 93) Chemically aspirin is known as
A)
salicylic acid
done
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B)
salicylaldehyde
done
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C)
2-acetoxybenzoic acid
done
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D)
phenyl salicylate
done
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View Answer play_arrow
question_answer 94) Gun metal is
A)
Cu + Zn
done
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B)
Cu + Sn + Zn
done
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C)
Cu + Sn
done
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D)
Zn + Sn
done
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View Answer play_arrow
question_answer 95) Which cannot be oxidised by \[{{H}_{2}}{{O}_{2}}\]?
A)
\[N{{a}_{2}}S{{O}_{3}}\]
done
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B)
\[PbS\]
done
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C)
KI
done
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D)
\[{{O}_{3}}\]
done
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View Answer play_arrow
question_answer 96) The gas not absorbed by coconut charcoal is
A)
He
done
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B)
Ne
done
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C)
Ar
done
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D)
Kr
done
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View Answer play_arrow
question_answer 97) KI and \[CuS{{O}_{4}}\] solutions on mixing produce
A)
\[C{{u}_{2}}{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\]
done
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B)
\[C{{u}_{2}}{{I}_{2}}+{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\]
done
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C)
\[Cu{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\]
done
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D)
\[Cu{{I}_{2}}+{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\]
done
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View Answer play_arrow
question_answer 98) Vitamin \[{{B}_{12}}\] contains
A)
Co
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B)
Mn
done
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C)
Mg
done
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D)
Fe
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question_answer 99) Water glass is
A)
glass made of water
done
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B)
sodium silicate
done
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C)
calcium formate
done
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D)
pyrex glass.
done
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View Answer play_arrow
question_answer 100) Purification of alumina takes place by
A)
Bosch process
done
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B)
Halls process
done
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C)
Hoopes process
done
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D)
Quartation process
done
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View Answer play_arrow
question_answer 101) Incubation period of Plasmodium vivax is
A)
14 days
done
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B)
30 days
done
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C)
40 days
done
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D)
32 days
done
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question_answer 102) The canal system is characteristic feature of
A)
helminthes
done
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B)
coelenterates
done
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C)
sponges
done
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D)
echinoderms
done
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View Answer play_arrow
question_answer 103) In cockroach, excretion occurs through
A)
nephral glands
done
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B)
nephridia
done
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C)
malpighian tubules
done
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D)
parotid gland
done
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View Answer play_arrow
question_answer 104) antibodies are
A)
lipids
done
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B)
carbohydrates
done
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C)
immunoglobulins
done
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D)
antiviral particles
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View Answer play_arrow
question_answer 105) Which of the following is a viral disease?
A)
TB
done
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B)
Diphtheria
done
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C)
Small pox
done
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D)
All of these
done
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View Answer play_arrow
question_answer 106) In 28 days human ovarian cycle, the ovulation takes place typically on
A)
day 1st of cycle
done
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B)
day 6th of cycle
done
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C)
day 10th of cycle
done
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D)
day 14th of cycle
done
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View Answer play_arrow
question_answer 107) Trypsinogen is converted to active trypsin by
A)
enterokinase
done
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B)
secretins
done
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C)
enterocrinin
done
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D)
ptylin
done
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View Answer play_arrow
question_answer 108) Bone marrow is absent in
A)
reptiles
done
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B)
amphibians
done
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C)
aves
done
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D)
mammals
done
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View Answer play_arrow
question_answer 109) Fluid mosaic model of cell membrane was given by
A)
Singer and Tatum
done
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B)
Watson
done
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C)
Robertson
done
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D)
Singer and Nicolson
done
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View Answer play_arrow
question_answer 110) Which of the following is a connecting link between glycolysis and Krebs cycle?
A)
Citric acid
done
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B)
Pyruvic acid
done
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C)
Acetyl Co-A
done
clear
D)
Glucose
done
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View Answer play_arrow
question_answer 111) Lock and key model of enzyme action was proposed by
A)
Kuhne
done
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B)
Koshland
done
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C)
Buchner
done
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D)
Fischer
done
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question_answer 112) Which of the following process needs bacteriophage?
A)
Transduction
done
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B)
Translation
done
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C)
Transformation
done
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D)
Conjugation
done
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View Answer play_arrow
question_answer 113) Purkinje fibres are present in
A)
brain
done
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B)
heart
done
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C)
blood
done
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D)
lungs
done
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View Answer play_arrow
question_answer 114) Dissociation curve of haemoglobin is
A)
sigmoid
done
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B)
parabolic
done
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C)
straight line
done
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D)
hyperbolic
done
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View Answer play_arrow
question_answer 115) The function of Henles loop is
A)
passage of urine
done
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B)
formation of urine
done
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C)
conservation of water
done
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D)
filteration of water
done
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View Answer play_arrow
question_answer 116) Parathormone is responsible for
A)
controlling calcium level in blood
done
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B)
decreasing calcium level in blood
done
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C)
filteration in nephron
done
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D)
increasing absorption of water
done
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View Answer play_arrow
question_answer 117) Hinge joint is present between
A)
humerus and ulna
done
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B)
femur and pectoral girdle
done
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C)
humerus and pelvic girdle
done
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D)
all of the above
done
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View Answer play_arrow
question_answer 118) Pancreas secretes pancreatic juice on stimulation by
A)
renin
done
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B)
gastrin
done
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C)
secretin
done
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D)
DDK
done
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View Answer play_arrow
question_answer 119) Which of the following is not a granulocyte?
A)
Basophils
done
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B)
Monocytes
done
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C)
Acidophils
done
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D)
Neutrophils
done
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View Answer play_arrow
question_answer 120) Nerve impulse initiates with the movements of
A)
\[{{K}^{+}}\]
done
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B)
\[N{{a}^{+}}\]
done
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C)
\[C{{a}^{+}}\]
done
clear
D)
\[M{{g}^{+}}\]
done
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question_answer 121) When an animal has both sexes (male and female), it is called
A)
intersex
done
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B)
super male
done
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C)
gynandromorph
done
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D)
super female
done
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question_answer 122) The contraction of gall bladder is due to
A)
gastrin
done
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B)
cholecystokinin
done
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C)
secretin
done
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D)
kinase
done
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question_answer 123) Which of the following has discoidal placenta?
A)
Rabbit
done
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B)
Deer
done
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C)
Sheep
done
clear
D)
Pig
done
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question_answer 124) DNA replication takes place in
A)
\[{{G}_{1}}\]-phase
done
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B)
S-phase
done
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C)
\[{{G}_{2}}\]-phase
done
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D)
Prophase
done
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View Answer play_arrow
question_answer 125) Which of the following is a transparent tissue?
A)
Tendon
done
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B)
Hyaline cartilage
done
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C)
Fibrous cartilage
done
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D)
All of these
done
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View Answer play_arrow
question_answer 126) A nucleoside is
A)
purine/pyramidine + phosphate
done
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B)
purine/pyramidine + sugar
done
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C)
pyramidine + purine + phosphate
done
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D)
purine + sugar + phosphate
done
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question_answer 127)
Floral formula is of family
A)
Papilionasae
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B)
Mimosoideae
done
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C)
Ceasalpinoidae
done
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D)
Malvaceae
done
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View Answer play_arrow
question_answer 128) Formation of diploid embryosac from diploid vegetative structure, eg, nucellus or integument etc., without meiosis is called
A)
apospory
done
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B)
apomixis
done
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C)
diplospory
done
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D)
adventive polyembryony
done
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View Answer play_arrow
question_answer 129) Process of water exudation through hydathodes is known as
A)
guttation
done
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B)
transpiration
done
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C)
evaporation
done
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D)
bleeding
done
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View Answer play_arrow
question_answer 130) Insectivorous plants grow in
A)
nitrogen rich soil
done
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B)
nitrogen deficient soil
done
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C)
potassium deficient soil
done
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D)
carbohydrate rich soil
done
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View Answer play_arrow
question_answer 131) Fungus without mycelium is
A)
Puccinia
done
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B)
Rhizopus
done
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C)
Saccharomyces
done
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D)
Mucor
done
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View Answer play_arrow
question_answer 132) The organelles involved in photorespiration are
A)
glyoxisome, chloroplast and mitochondria
done
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B)
chloroplast, peroxisome and glyoxisome
done
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C)
mitochondria, peroxisome and glyoxisome
done
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D)
chloroplast, mitochondria and peroxisome
done
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question_answer 133) Floridean starch is found in
A)
Chlorophyceae
done
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B)
Myxophyceae
done
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C)
Phaeophyceae
done
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D)
Rhodophyceae
done
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View Answer play_arrow
question_answer 134) The hormone reducing transpiration rate by inducing stomatal closure is
A)
ABA
done
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B)
ethylene
done
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C)
cytokinin
done
clear
D)
auxin
done
clear
View Answer play_arrow
question_answer 135) The pigment involved in photomorphogenetic movements is
A)
cytochrome
done
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B)
phytochrome
done
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C)
chromatin
done
clear
D)
vernalin
done
clear
View Answer play_arrow
question_answer 136) First \[C{{O}_{2}}\] receptor in \[{{C}_{4}}\] plants is
A)
PGA
done
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B)
PEP
done
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C)
RuBP
done
clear
D)
OAA
done
clear
View Answer play_arrow
question_answer 137) The components of an ecosystem are
A)
, trees and weeds
done
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B)
plants and animals
done
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C)
man and plants
done
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D)
biotic and abiotic
done
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View Answer play_arrow
question_answer 138) The 10% energy transfer law of food chain was given by
A)
Lederberg
done
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B)
Lindmann
done
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C)
Weismann
done
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D)
Lindley
done
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View Answer play_arrow
question_answer 139) Reaction centre of photosystem-I in green plants is
A)
\[{{P}_{680}}~\]
done
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B)
\[{{P}_{690}}~\]
done
clear
C)
\[{{P}_{700}}~\]
done
clear
D)
\[{{P}_{780}}~\]
done
clear
View Answer play_arrow
question_answer 140) Double fertilization is found in
A)
bryophytes
done
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B)
angiosperms
done
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C)
gymnosperms
done
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D)
pteridophytes
done
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View Answer play_arrow
question_answer 141) A sporangium derived from a single cell is called
A)
leptosporangiate
done
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B)
eusporangiate
done
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C)
heterosporangiate
done
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D)
none of the above
done
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View Answer play_arrow
question_answer 142) Root cap is not found in
A)
mesophytes
done
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B)
xerophytes
done
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C)
hydrophytes
done
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D)
halophytes
done
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View Answer play_arrow
question_answer 143) The high yielding hybrid crop varieties to exploit hybrid vigour, the farmers need to purchase fresh hybrid seed every year because
A)
hybrid vigour is not long standing due to inbreeding depression
done
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B)
they are not allowed to grow their own seed
done
clear
C)
it is always associated with increased heterozygosity
done
clear
D)
government has accepted Dunkels proposals
done
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View Answer play_arrow
question_answer 144) Genetic engineering is related with
A)
eugenics
done
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B)
euphenics
done
clear
C)
euthenics
done
clear
D)
all of these
done
clear
View Answer play_arrow
question_answer 145) Floating roots are the characteristic feature of
A)
Viscum
done
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B)
Cuscuta
done
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C)
Vanda
done
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D)
Jussiaea
done
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View Answer play_arrow
question_answer 146) The diameter of Z-DNA is
A)
34 \[\overset{o}{\mathop{A}}\,\]
done
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B)
20 \[\overset{o}{\mathop{A}}\,\]
done
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C)
18 \[\overset{o}{\mathop{A}}\,\]
done
clear
D)
45 \[\overset{o}{\mathop{A}}\,\]
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question_answer 147) The genes, which remain confined to differential region of Y chromosome, are
A)
autosomal genes
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B)
holandric genes
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C)
sex linked genes
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D)
mutant genes
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question_answer 148) The hormone responsible for ripening of fruits is
A)
ethylene
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B)
cytokinin
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C)
auxin
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D)
ABA
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question_answer 149) Select the correct statement.
A)
legumes are incapable of fixing nitrogen
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B)
legumes fix nitrogen through bacteria living in fruits root
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C)
legumes fix nitrogen only by bacteria present in nodules
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D)
none of the above
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question_answer 150) The part of cotton producing pure cellulose is
A)
root hair
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B)
leaf hair
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C)
seed hair
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D)
stem hair
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