question_answer 1) A cylinder of mass 10 kg is rolling on a rough plane with a velocity of 10 m/s. If the coefficient of friction between the surface and cylinder is 0.5, then before stopping it will cover a distance of (Take g = 10 m/s2): [BHU PMT-2004]
A)
10 m
done
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B)
7.5 m
done
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C)
5 m
done
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D)
2.5 m
done
clear
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question_answer 2) If a ladder weighing 250 N is placed against a smooth vertical wall having coefficient of friction between it and floor is 0.3, then what is the maximum force of friction available at the point of contact between the ladder and the floor? [BHU PMT-2004]
A)
75 N
done
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B)
50 N
done
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C)
35 N
done
clear
D)
25 N
done
clear
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question_answer 3) A ball of mass 150g moving with an acceleration 20 m/s2 is hit by a force, which acts on it for 0.1 s. The impulsive force is : [BHU PMT-2004]
A)
0.5 N-s
done
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B)
0.1 N-s
done
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C)
0.3 N-s
done
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D)
1.2 N-s
done
clear
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question_answer 4) A body, thrown upwards with some velocity reaches the maximum height of 50 m. Another body with double the mass thrown up with double the initial velocity will reach a maximum height of: [BHU PMT-2004]
A)
100 m
done
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B)
200 m
done
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C)
300 m
done
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D)
400 m
done
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question_answer 5) A 100 m long train is moving with a uniform velocity of 45 km/h. The time taken by the train to cross a bridge of length 1 km is: [BHU PMT-2004]
A)
58 s
done
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B)
68 s
done
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C)
78 s
done
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D)
88 s
done
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question_answer 6) Velocity-time curve for a body, projected vertically upwards, is: [BHU PMT-2004]
A)
Parabola
done
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B)
Ellipse
done
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C)
Hyperbola
done
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D)
Straight line
done
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question_answer 7) The numerical ratio of displacement to the distance covered is always: [BHU PMT-2004]
A)
less than one
done
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B)
equal to one
done
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C)
equal to or less than one
done
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D)
equal to or greater than one
done
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question_answer 8) In the relation \[y=a\,\,\cos \left( \omega t-kx \right)\],the dimensional formula for k is : [BHU PMT-2004]
A)
\[\left[ {{M}^{0}}{{L}^{-1}}{{T}^{-1}} \right]\]
done
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B)
\[\left[ {{M}^{0}}L{{T}^{-1}} \right]\]
done
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C)
\[\left[ {{M}^{0}}{{L}^{-1}}{{T}^{0}} \right]\]
done
clear
D)
\[\left[ {{M}^{0}}LT \right]\]
done
clear
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question_answer 9) The frequency of vibration of string is given by \[v=\frac{P}{2l}{{\left[ \frac{F}{m} \right]}^{1/2}}\] Here \[p\]is number of segments in the string and is the length. The dimensional formula for \[m\]will be: [BHU PMT-2004]
A)
\[\left[ {{M}^{0}}L{{T}^{-1}} \right]\]
done
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B)
\[\left[ M{{L}^{0}}{{T}^{-1}} \right]\]
done
clear
C)
\[\left[ M{{L}^{-1}}{{T}^{0}} \right]\]
done
clear
D)
\[\left[ {{M}^{0}}{{L}^{0}}{{T}^{0}} \right]\]
done
clear
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question_answer 10) Masses of two substances are 1 g and 9 g respectively. If their kinetic energies are same, then the ratio of their momentum will be: [BHU PMT-2004]
A)
1:9
done
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B)
9:1
done
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C)
3:1
done
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D)
1:3
done
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question_answer 11)
A body of mass m rests on horizontal surface, the coefficient of friction between the body and the surface is 4, if the mass is pulled by a force P as shown in the figure, the limiting friction between body and surface will be: [BHU PMT-2004]
A)
\[\mu mg\]
done
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B)
\[\mu \left[ mg+\left( \frac{P}{2} \right) \right]\]
done
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C)
\[\mu \left[ mg-\left( \frac{P}{2} \right) \right]\]
done
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D)
\[\mu \left[ mg-\left( \frac{\sqrt{3}P}{2} \right) \right]\]
done
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question_answer 12) A circular disc is rotating with angular velocity \[\omega \]. If a man standing at the edge of the disc walks towards its centre, then the angular velocity of the disc will: [BHU PMT-2004]
A)
Decrease
done
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B)
Increase
done
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C)
Be halved
done
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D)
Not change
done
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question_answer 13) The moment of inertia of a disc of mass m and radius R about an axis, which is tangential to the circumference of the disc and parallel to its diameter is: [BHU PMT-2004]
A)
\[\frac{3}{2}m{{R}^{2}}\]
done
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B)
\[\frac{2}{3}m{{R}^{2}}\]
done
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C)
\[\frac{5}{4}m{{R}^{2}}\]
done
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D)
\[\frac{4}{5}m{{R}^{2}}\]
done
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question_answer 14) A body weighs 500 N on the surface of the earth. How much would it weigh half way below the surface of the earth? [BHU PMT-2004]
A)
1000 N
done
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B)
500 N
done
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C)
250 N
done
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D)
125 N
done
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question_answer 15) Escape velocity at surface of earth is 11.2km/s. Escape velocity from a planet whose mass is the same as that of earth and radius 1/4 that of earth, is : [BHU PMT-2004]
A)
2.8km/s
done
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B)
15.6 km/s
done
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C)
22.4 km/s
done
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D)
44.8 km/s
done
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question_answer 16) The Bulk modulus for an incompressible liquid is: [BHU PMT-2004]
A)
Zero
done
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B)
unity
done
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C)
Infinity
done
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D)
between 0 and 1
done
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question_answer 17) In a capillary tube, water rises to 3 mm. The height of water that will rise in another capillary tube having one-third radius the first is: [BHU PMT-2004]
A)
1 mm
done
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B)
3 mm
done
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C)
6 mm
done
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D)
9 mm
done
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question_answer 18) A man is watching two trains, one leaving and the other coming with equal speed of 4 m/s. If they sound their whistles each of frequency 240 Hz, the number of beats heard by man (velocity of sound in air=320 m/s) will be equal to: [BHU PMT-2004]
A)
12
done
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B)
zero
done
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C)
3
done
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D)
6
done
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question_answer 19) A tuning fork of frequency 392 Hz, resonates with 50 cm length of a string under tension\[\left( T \right)\]. If length of the string is decreased, by 2%, keeping the tension constant, the number of beats heard when the string and the tuning fork made to vibrate simultaneously is: [BHU PMT-2004]
A)
4
done
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B)
6
done
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C)
8
done
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D)
12
done
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question_answer 20) The equation of stationary wave along a stretched string is given by \[y=5\,\,\sin \frac{\pi x}{3}\cos \,\,40\,\,\pi t\] Where \[x\] and \[y\] are in centimeter and \[t\] in second. The separation between two adjacent nodes is: [BHU PMT-2004]
A)
6 cm
done
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B)
4 cm
done
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C)
3 cm
done
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D)
1.5 cm
done
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question_answer 21) \[A\] and \[B\] are two hills at a distance 510 m apart. A person standing between the hills claps his hands and hears two echoes at the end of 1 s and 2 s respectively. The velocity of sound in air is: [BHU PMT-2004]
A)
225 m/s
done
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B)
340 m/s
done
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C)
510 m/s
done
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D)
1020 m/s
done
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question_answer 22)
The coefficient of thermal conductivity of copper is nine times that of steel. In the composite cylindrical bar shown in the figure, what will be the temperature at the junction of copper and steel? [BHU PMT-2004]
A)
\[\text{25}{{\,}^{\circ }}C\]
done
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B)
\[33{{\,}^{\circ }}C\]
done
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C)
\[67{{\,}^{\circ }}C\]
done
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D)
\[75{{\,}^{\circ }}C\]
done
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question_answer 23) The amount of work, which can be obtained by supplying 200 cal of heat, is: [BHU PMT-2004]
A)
840 J
done
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B)
840 erg
done
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C)
840 W
done
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D)
840 dyne
done
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question_answer 24) A Carnot engine operates between \[227{{\,}^{\circ }}C\] and\[27{{\,}^{\circ }}C\]. Efficiency of the engine will be: [BHU PMT-2004]
A)
1/3
done
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B)
2/5
done
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C)
3/4
done
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D)
3/5
done
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question_answer 25) A capacitor of \[20\,\mu \,F\] capacity charged up to 500 V is connected in parallel with another capacitor of \[10\,\mu \,F\] which is charged up to 200 V. Their common potential is: [BHU PMT-2004]
A)
500 V
done
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B)
400 V
done
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C)
300 V
done
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D)
200 V
done
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question_answer 26) What will happen when a 40 W, 220 V lamp and 100 W, 220 V lamp are connected in series across 40 V supply? [BHU PMT-2004]
A)
100 W lamp will fuse
done
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B)
40 W lamp will fuse
done
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C)
Both lamps will fuse
done
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D)
Neither lamp will fuse
done
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question_answer 27) A parallel plate capacitor having a plate separation on 2 mm is charged by connecting it to a 300 V supply. The energy density is: [BHU PMT-2004]
A)
0.01 J/m3
done
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B)
0.01 J/m3
done
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C)
1.0 J/m3
done
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D)
10 J/m3
done
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question_answer 28) A \[{{5}^{\circ }}C\] rise in the temperature is observed in a conductor by passing some current. When the current is doubled, then rise in temperature will be equal to: [BHU PMT-2004]
A)
\[{{5}^{\circ }}C\]
done
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B)
\[{{10}^{\circ }}C\]
done
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C)
\[{{20}^{\circ }}C\]
done
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D)
\[{{40}^{\circ }}C\]
done
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question_answer 29) If a 2 kW boiler is used everyday for 1 h, then electrical energy consumed by boiler in thirty days is: [BHU PMT-2004]
A)
15 unit
done
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B)
60 unit
done
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C)
120 unit
done
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D)
240 unit
done
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question_answer 30) Two identical wires are first connected in series and then in parallel. The amount of heat produced in both the conditions are in the ratio of: [BHU PMT-2004]
A)
1 : 2
done
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B)
2 : 1
done
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C)
1 : 4
done
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D)
4 : 1
done
clear
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question_answer 31) A galvanometer can be changed into an ammeter by using: [BHU PMT-2004]
A)
Low resistance shunt in series
done
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B)
Low resistance shunt in parallel
done
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C)
High resistance shunt in series
done
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D)
High resistance shunt in parallel
done
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question_answer 32)
A galvanometer gives full scale deflection with 0.2 A in a coil shown in the figure. The resistance of its coil is\[10\,\Omega \]. How much shunt resistance is required to convert it into an ammeter to read current upto 1.8 A? [BHU PMT-2004]
A)
\[1.25\,\Omega \]
done
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B)
\[2.5\,\Omega \]
done
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C)
\[5.0\,\Omega \]
done
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D)
\[10.0\,\Omega \]
done
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question_answer 33) The coefficient of mutual inductance, when magnetic flux is \[2\times {{10}^{-2}}\] Wb and change in current is 0.01 A, is: [BHU PMT-2004]
A)
2 H
done
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B)
3 H
done
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C)
4 H
done
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D)
8 H
done
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question_answer 34) The magnetic needle lying parallel to the magnetic field requires W units of work to rotate it through\[{{60}^{\circ }}\]. The torque needed to maintain the needle in this position is: [BHU PMT-2004]
A)
\[3\,\,W\]
done
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B)
\[\sqrt{3}\,\,W\]
done
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C)
\[\frac{W}{3}\]
done
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D)
\[\frac{W}{\sqrt{3}}\]
done
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question_answer 35) If two electric bulbs have 40 W and 60 W rating at 220 V, then the ratio of their resistances will be: [BHU PMT-2004]
A)
\[3\,:\,2\]
done
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B)
\[3\,:\,8\]
done
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C)
\[4\,:\,3\]
done
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D)
\[9\,\,:\,\,4\]
done
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question_answer 36) A small piece of metal wire is dragged across the gap between the poles of a magnet is 0.4 s. If the change in magnetic flux in the wire is \[8\times {{10}^{-4}}\] Wb, then emf induced in the wire is: [BHU PMT-2004]
A)
\[8\times {{10}^{-3}}\,V\]
done
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B)
\[6\times {{10}^{-3}}\,V\]
done
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C)
\[4\times {{10}^{-3}}\,V\]
done
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D)
\[2\times {{10}^{-3}}\,V\]
done
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question_answer 37) In 0.1 s, the current in a coil increases from 1 A to 1.5 A. If inductance of this coil is 60 mH, then induced current in an external resistance of \[3\,\,\Omega \] will be: [BHU PMT-2004]
A)
1 A
done
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B)
0.5 A
done
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C)
0.2 A
done
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D)
0.1 A
done
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question_answer 38) The focal lengths for violet, green and red light rays are \[{{f}_{V}}\], \[{{f}_{C}}\] and \[{{f}_{R}}\] respectively. Which of the following is the true relationship? [BHU PMT-2004]
A)
\[{{f}_{R}}<{{f}_{G}}<{{f}_{V}}\]
done
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B)
\[{{f}_{V}}<{{f}_{G}}<{{f}_{R}}\]
done
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C)
\[{{f}_{G}}<{{f}_{R}}<{{f}_{V}}\]
done
clear
D)
\[{{f}_{G}}<{{f}_{V}}<{{f}_{R}}\]
done
clear
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question_answer 39) The power of combination of two lenses of powers + 1.5 D and -2.5 D is: [BHU PMT-2004]
A)
+ 1.5 D
done
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B)
? 2.5 D
done
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C)
- 1 D
done
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D)
+ 1 D
done
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question_answer 40) A ray of monochromatic light suffers minimum deviation of\[{{38}^{\circ }}\], while passing through a prism of refracting angle\[{{60}^{\circ }}\]. Refractive index of the prism material is: [BHU PMT-2004]
A)
2.4
done
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B)
0.8
done
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C)
1.3
done
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D)
1.5
done
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question_answer 41) In a Plano-convex lens the radius of curvature of the convex lens is 10 cm. If the plane side is polished, then the focal length will be (Refractive index\[\mu =1.5\]): [BHU PMT-2004]
A)
15 cm
done
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B)
10 cm
done
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C)
2.5 cm
done
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D)
5 cm
done
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question_answer 42) The blue color of sky is due to: [BHU PMT-2004]
A)
Scattering
done
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B)
Absorption
done
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C)
Reflection
done
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D)
Diffraction
done
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question_answer 43) The photoelectric threshold wavelength for potassium(work function being 2 eV) is: [BHU PMT-2004]
A)
310 nm
done
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B)
620 nm
done
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C)
1200 nm
done
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D)
2100 nm
done
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question_answer 44) The half-life period of a radioactive substance is 140 days. After how much time, 15 g will decay from a 16 g sample of the substance? [BHU PMT-2004]
A)
140 days
done
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B)
280 days
done
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C)
420 days
done
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D)
560 days
done
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question_answer 45) An electron changes its position from orbit \[n=2\] to the orbit \[n=4\] of an atom. The wavelength of the emitted radiations is: [BHU PMT-2004]
A)
\[\frac{16}{R}\]
done
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B)
\[\frac{16}{3R}\]
done
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C)
\[\frac{16}{5R}\]
done
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D)
\[\frac{16}{7R}\]
done
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question_answer 46) If the energy of a hydrogen atom in \[n\]th orbit is \[{{E}_{rv}}\] then energy in the \[n\]th orbit of a singly ionized helium atom will be: [BHU PMT-2004]
A)
\[4{{E}_{n}}\]
done
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B)
\[{{E}_{n}}/4\]
done
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C)
\[2{{E}_{n}}\]
done
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D)
\[{{E}_{n}}/2\]
done
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question_answer 47) If the work function of a photo metal is 6.875 eV, its threshold wavelength will be: (Take \[c=3\times {{10}^{8}}\,\,m/s\]) [BHU PMT-2004]
A)
3600 \[\overset{\circ }{\mathop{\text{A}}}\,\]
done
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B)
2400 \[\overset{\circ }{\mathop{\text{A}}}\,\]
done
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C)
1800 \[\overset{\circ }{\mathop{\text{A}}}\,\]
done
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D)
1200 \[\overset{\circ }{\mathop{\text{A}}}\,\]
done
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question_answer 48) Which of the following is unipolar transistor? [BHU PMT-2004]
A)
\[\text{p}-\text{n}-\text{p}\] transistor
done
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B)
\[\text{n}-\text{p}-\text{n}\] transistor
done
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C)
Field effect transistor
done
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D)
Point contact transistor
done
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question_answer 49) Which of the following is not correct regarding the telescope? [BHU PMT-2004]
A)
It can not work at night
done
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B)
It can detect a very faint radio signal
done
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C)
It can be operated even in cloudy weather
done
clear
D)
It is much cheaper than optical telescope
done
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question_answer 50) In our solar system, there is one sun and: [BHU PMT-2004]
A)
Seven planets
done
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B)
Nine planets
done
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C)
Eleven planets
done
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D)
Indefinite number of planets
done
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question_answer 51) According to Heisenberg's uncertainty principle, the product of uncertainties in position and velocities for an electron of mass \[9.1\times {{10}^{-31}}kg\]is:
A)
\[2.8\times {{10}^{-3}}{{m}^{2}}{{s}^{-1}}\]
done
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B)
\[3.8\times {{10}^{-5}}{{m}^{2}}{{s}^{-1}}\]
done
clear
C)
\[5.8\times {{10}^{-5}}{{m}^{2}}{{s}^{-1}}\]
done
clear
D)
\[6.8\times {{10}^{-6}}{{m}^{2}}{{s}^{-1}}\]
done
clear
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question_answer 52) The state of hybridisation of B in\[BC{{l}_{3}}\]is:
A)
\[sp\]
done
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B)
\[s{{p}^{2}}\]
done
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C)
\[s{{p}^{3}}\]
done
clear
D)
\[s{{p}^{2}}{{d}^{2}}\]
done
clear
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question_answer 53) The significant figures in 3400 are:
A)
2
done
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B)
5
done
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C)
6
done
clear
D)
4
done
clear
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question_answer 54) For a Carnot engine, the source is at 500 K and the sink at 300 K. What is efficiency of this engine?
A)
0.2
done
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B)
0.4
done
clear
C)
0.6
done
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D)
0.3
done
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question_answer 55) If 20 g of a solute was dissolved in 500 mL of water and osmotic pressure of the solution was found to be 600 mm of Hg at\[15{}^\circ C,\] then molecular weight of the solute is:
A)
1000
done
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B)
1200
done
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C)
1400
done
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D)
1800
done
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question_answer 56) Work done during isothermal expansion of one mole of an ideal gas from 10 atm to 1 atm at 300 K is:
A)
4938.8 J
done
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B)
4138.8 J
done
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C)
5744.1 J
done
clear
D)
6257.2 J
done
clear
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question_answer 57) The number of sodium atoms in 2 moles of sodium ferrocyanide is:
A)
\[12\times {{10}^{23}}\]
done
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B)
\[26\times {{10}^{23}}\]
done
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C)
\[34\times {{10}^{23}}\]
done
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D)
\[48\times {{10}^{23}}\]
done
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question_answer 58) According to Bohr's principle, the relation between principle quantum number (n) and radius of orbit is :
A)
\[r\propto n\]
done
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B)
\[r\propto {{n}^{2}}\]
done
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C)
\[r\propto \frac{1}{n}\]
done
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D)
\[r\propto \frac{1}{{{n}^{2}}}\]
done
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question_answer 59) For an exothermic reaction, the value of:
A)
\[\Delta E\]is negative
done
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B)
\[\Delta H\]is positive
done
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C)
\[\Delta H\]is negative
done
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D)
\[\Delta H\]equal to zero
done
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question_answer 60) The number of lattice arrangements in different crystal systems are:
A)
8
done
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B)
7
done
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C)
9
done
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D)
14
done
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question_answer 61) If equilibrium constants of reaction, \[{{N}_{2}}+{{O}_{2}}2NO\]is\[{{K}_{1}},\]and \[\frac{1}{2}{{N}_{2}}+\frac{1}{2}{{O}_{2}}NO\]is\[{{K}_{2}},\]then:
A)
\[{{K}_{1}}={{K}_{2}}\]
done
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B)
\[{{K}_{2}}=\sqrt{{{K}_{1}}}\]
done
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C)
\[{{K}_{1}}=2{{K}_{2}}\]
done
clear
D)
\[{{K}_{1}}=\frac{1}{2}{{K}_{2}}\]
done
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question_answer 62) Wolframite ore is separated from tins tone ore by the process of:
A)
roasting
done
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B)
electromagnetic
done
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C)
smelting
done
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D)
calcination
done
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question_answer 63) If solubility product of\[HgS{{O}_{4}}>4\]is\[6.4\times {{10}^{-5}},\] then its solubility is:
A)
\[8\times {{10}^{-3}}mol/L\]
done
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B)
\[6.4\times {{10}^{-5}}mol/L\]
done
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C)
\[6.4\times {{10}^{-3}}mol/L\]
done
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D)
\[2.8\times {{10}^{-6}}mol/L\]
done
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question_answer 64) Disintegration constant for a radioactive substance is 0.58 per hour. Its half-life period is:
A)
8.2 h
done
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B)
5.2 h
done
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C)
1.2 h
done
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D)
2.4 h
done
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question_answer 65) The rate constant of a reaction depends upon:
A)
extent of reaction
done
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B)
time of reaction
done
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C)
temperature of the system
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D)
concentration of the system
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question_answer 66) A cylinder of 5 L capacity, filled with air at NTP, is connected with another evacuated cylinder of 30 L capacity. The resultant air pressure in both the cylinders will be:
A)
10.8 cm of Hg
done
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B)
14.9 cm of Hg
done
clear
C)
21.8 cm of Hg
done
clear
D)
38.8 cm of Hg
done
clear
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question_answer 67) The maximum number of hydrogen bonds formed by a water molecule in ice is:
A)
4
done
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B)
5
done
clear
C)
7
done
clear
D)
3
done
clear
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question_answer 68) The volume strength of 1.5 N\[{{H}_{2}}{{O}_{2}}\] solution is:
A)
8.4 L
done
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B)
4.2 L
done
clear
C)
16.8 L
done
clear
D)
5.2 L
done
clear
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question_answer 69) When a substance is dissolved in a solvent, the vapour pressure of solvent decreases. It brings:
A)
a decrease in boiling point of the solution
done
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B)
an increase in boiling point of the solution
done
clear
C)
a decrease in freezing point of the solution
done
clear
D)
an increase in freezing point of the solution
done
clear
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question_answer 70) Acetone reacts with iodine to form iodoform in the presence of:
A)
\[CaC{{O}_{3}}\]
done
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B)
\[NaOH\]
done
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C)
\[KOH\]
done
clear
D)
\[MgC{{O}_{3}}\]
done
clear
View Answer play_arrow
question_answer 71) The chemical formula of diammine silver (I) chloride is:
A)
\[[Ag(N{{H}_{3}})]Cl\]
done
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B)
\[[Ag{{(N{{H}_{3}})}_{2}}]Cl\]
done
clear
C)
\[{{[Ag{{(N{{H}_{3}})}_{2}}]}_{2}}Cl\]
done
clear
D)
\[[Ag{{(N{{H}_{4}})}_{2}}]Cl\]
done
clear
View Answer play_arrow
question_answer 72) When alkyl halide is heated with dry\[A{{g}_{2}}O\] it produces:
A)
ester
done
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B)
ether
done
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C)
ketone
done
clear
D)
alcohol
done
clear
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question_answer 73) The IUPAC name of the compound \[C{{H}_{3}}C{{H}_{2}}\overset{\begin{smallmatrix} OC{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{CH}}\,C{{H}_{2}}OH\] is:
A)
2-methoxy-l-butanol
done
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B)
3-methoxy-l-butanol
done
clear
C)
2-methoxy-l-butanal
done
clear
D)
1, 2-methoxy-butanol
done
clear
View Answer play_arrow
question_answer 74) Which of the following has the highest first ionisation energy?
A)
Li
done
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B)
Be
done
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C)
B
done
clear
D)
C
done
clear
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question_answer 75) Which of the following is used widely in the manufacture of lead storage battery?
A)
Arsenic
done
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B)
Lithium
done
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C)
Bismuth
done
clear
D)
Antimony
done
clear
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question_answer 76) By annealing, steel:
A)
becomes soft
done
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B)
becomes liquid
done
clear
C)
becomes hard and brittle
done
clear
D)
is covered with a thin film of \[F{{e}_{3}}{{O}_{4}}\]
done
clear
View Answer play_arrow
question_answer 77) Iron pipes, lying in acidic soil, are often attached to the blocks of magnesium for their protection from rusting, because magnesium:
A)
is lighter than iron
done
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B)
is readily converted into positive ion
done
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C)
forms a corrosion-resistant alloy with iron
done
clear
D)
prevents air from reaching the surface of iron
done
clear
View Answer play_arrow
question_answer 78) How many atoms of calcium will be deposited from a solution of\[CaC{{l}_{2}}\]by a current of 5 mA flowing for 60 seconds?
A)
\[4.68\times {{10}^{18}}\]
done
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B)
\[4.68\times {{10}^{15}}\]
done
clear
C)
\[4.68\times {{10}^{12}}\]
done
clear
D)
\[4.68\times {{10}^{9}}\]
done
clear
View Answer play_arrow
question_answer 79) In the reaction\[A{{g}_{2}}O+{{H}_{2}}{{O}_{2}}\xrightarrow{{}}2Ag+{{H}_{2}}O+{{O}_{2}},\]\[{{H}_{2}}{{O}_{2}}\]acts as:
A)
reducing agent
done
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B)
oxidising agent
done
clear
C)
bleaching agent
done
clear
D)
none of these
done
clear
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question_answer 80) Which of the following acid is formed when \[Si{{F}_{4}}\]reacts with water?
A)
\[Si{{F}_{4}}\]
done
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B)
\[{{H}_{2}}Si{{F}_{4}}\]
done
clear
C)
\[{{H}_{2}}S{{O}_{4}}\]
done
clear
D)
\[{{H}_{2}}Si{{F}_{6}}\]
done
clear
View Answer play_arrow
question_answer 81) Which of the following statement is correct with respect to the property of elements with an increase in atomic number in the carbon family (group 14)?
A)
Atomic size decrease
done
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B)
lonization energy increase
done
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C)
Metallic character decrease
done
clear
D)
Stability of + 2 oxidation state increase
done
clear
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question_answer 82) Boron halides behave as Lewis base, because of their:
A)
ionic nature
done
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B)
acidic nature
done
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C)
covalent nature
done
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D)
electron deficient nature
done
clear
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question_answer 83) The most efficient agent for the absorption of \[S{{O}_{3}}\]is:
A)
80 %\[{{H}_{2}}S{{O}_{4}}\]
done
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B)
98% \[{{H}_{2}}S{{O}_{4}}\]
done
clear
C)
50 %\[{{H}_{2}}S{{O}_{4}}\]
done
clear
D)
20% \[{{H}_{2}}Si{{F}_{6}}\]
done
clear
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question_answer 84) Alkaline earth's metals are denser than alkali metals, because metallic bonding in alkaline earth's metal, is:
A)
stronger
done
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B)
weaker
done
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C)
volatile
done
clear
D)
not present
done
clear
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question_answer 85) Toluene is oxidised to benzoic acid by:
A)
\[KMn{{O}_{4}}\]
done
clear
B)
\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
done
clear
C)
\[{{H}_{2}}S{{O}_{4}}\]
done
clear
D)
both (a) and (b)
done
clear
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question_answer 86) Methane and ethane both can be prepared in one step by which of the following compound?
A)
\[{{C}_{2}}{{H}_{4}}\]
done
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B)
\[CH{{ }_{3}}OH\]
done
clear
C)
\[C{{H}_{3}}Br\]
done
clear
D)
\[C{{H}_{3}}C{{H}_{2}}OH\]
done
clear
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question_answer 87) Phenol can be converted into salicyladehyde by:
A)
Etard reaction
done
clear
B)
Perkin reaction
done
clear
C)
Cannizaro reaction
done
clear
D)
Reimer-Tiemann reaction
done
clear
View Answer play_arrow
question_answer 88) Which of the following oil is obtained from benzene after fractional distillation of coal tar?
A)
Light oil
done
clear
B)
Heavy oil
done
clear
C)
Middle oil
done
clear
D)
Anthracene oil
done
clear
View Answer play_arrow
question_answer 89) Azo dyes are prepared from:
A)
phenol
done
clear
B)
ethyl bromide
done
clear
C)
benzaldehyde
done
clear
D)
benzoic acid
done
clear
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question_answer 90) Which of the following is strongest base?
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
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question_answer 91) Which of the following is the most stable compound?
A)
\[P{{h}_{3}}\overset{+}{\mathop{C}}\,\]
done
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B)
\[P{{h}_{2}}\overset{+}{\mathop{C}}\,H\]
done
clear
C)
\[P{{h}_{2}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]
done
clear
D)
\[Ph\overset{+}{\mathop{C}}\,{{H}_{2}}\]
done
clear
View Answer play_arrow
question_answer 92) A biological catalyst is essentially:
A)
an enzyme
done
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B)
a carbohydrate
done
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C)
an amino acid
done
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D)
a nitrogen compound
done
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question_answer 93) Haemoglobin is an example of:
A)
blood
done
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B)
glycoprotein
done
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C)
fibrous protein
done
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D)
globular protein
done
clear
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question_answer 94) In elastomer, intermolecular forces are:
A)
nil
done
clear
B)
weaker
done
clear
C)
strong
done
clear
D)
very strong
done
clear
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question_answer 95) When glucose reacts with bromine water, the main product is:
A)
acetic acid
done
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B)
saccharic acid
done
clear
C)
glyceraldehyde
done
clear
D)
gluconic acid
done
clear
View Answer play_arrow
question_answer 96) In the reaction\[C{{H}_{3}}CN+2H\xrightarrow[ether]{HCl}X\xrightarrow[{{H}_{2}}O]{Boiling}Y;\]the term Y is:
A)
acetone
done
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B)
ethyl amine
done
clear
C)
acetaldehyde
done
clear
D)
dimethyl amine
done
clear
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question_answer 97) The complete combustion of\[C{{H}^{4}}\]gives:
A)
\[CO+{{H}_{2}}\]
done
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B)
\[CO+{{N}_{2}}\]
done
clear
C)
\[C{{O}_{2}}+{{H}_{2}}O\]
done
clear
D)
\[CO+{{N}_{2}}O\]
done
clear
View Answer play_arrow
question_answer 98) A reagent used to test for unsaturation of alkene is:
A)
cone. \[{{H}_{2}}S{{O}_{4}}\]
done
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B)
ammoniacal \[CuC{{l}_{2}}\]
done
clear
C)
ammoniacal \[AgN{{O}_{3}}\]
done
clear
D)
solution of\[B{{r}_{2}}\]in\[CC{{l}_{4}}\]
done
clear
View Answer play_arrow
question_answer 99) A primary amine is formed from an amide by the treatment of bromine and alkali. The primary amine has:
A)
1 carbon atom less than amide
done
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B)
1 carbon atom more than amide
done
clear
C)
1 hydrogen atom less than amide
done
clear
D)
1 hydrogen atom more than amide
done
clear
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question_answer 100) Which of the following is industrially prepared by passing ethylene into hypochlorous acid?
A)
Ethylene glycol
done
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B)
Ethylene oxide
done
clear
C)
Ethylene dinitrate
done
clear
D)
Ethane
done
clear
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question_answer 101) Which of the following is not vestigial in man?
A)
Tail vertebrae
done
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B)
Nails
done
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C)
Nictitating membrane
done
clear
D)
Vermiform appendix
done
clear
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question_answer 102) The chemical used in 'National Malaria Eradication Programme' is :
A)
2, 4-D
done
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B)
BHC
done
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C)
DDT
done
clear
D)
Pyrethroid
done
clear
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question_answer 103) A eukaryotic gene contains two kinds of base sequences. Which of these plays an important role in protein synthesis ?
A)
In trons
done
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B)
Exons
done
clear
C)
Both and
done
clear
D)
None of these
done
clear
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question_answer 104) The number of hydrogen bonds between adenine and thymine in a DNA molecule is :
A)
two
done
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B)
three
done
clear
C)
four
done
clear
D)
eight
done
clear
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question_answer 105) The enzyme, which combines with non-protein part to form a functional enzyme known as :
A)
co-enzyme
done
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B)
holoenzyme
done
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C)
apoenzyme
done
clear
D)
prosthetic group
done
clear
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question_answer 106) Which of the following enzyme digest protein in stomach ?
A)
Trypsin
done
clear
B)
Pepsin
done
clear
C)
Crepsin
done
clear
D)
None of these
done
clear
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question_answer 107) Passive food ingestion in Amoeba is known as:
A)
import
done
clear
B)
invagination
done
clear
C)
circumfluence
done
clear
D)
circumvallation
done
clear
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question_answer 108) The slime moulds are characterized by the presence of:
A)
elaters
done
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B)
pseudoelaters
done
clear
C)
capillitium
done
clear
D)
capitulum
done
clear
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question_answer 109) Ecdysone is secreted from :
A)
Insecta
done
clear
B)
Trematoda
done
clear
C)
Nematoda
done
clear
D)
Polychaeta
done
clear
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question_answer 110) In the life cycle of mosquito, comma-shaped stage is :
A)
larval stage
done
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B)
pupal stage
done
clear
C)
imago stage
done
clear
D)
none of these
done
clear
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question_answer 111) Haemocoel is found in :
A)
Hydra and Aurelia
done
clear
B)
Taenia and Ascaris
done
clear
C)
cockroach and Pila
done
clear
D)
Balanoglossus and Herdmania
done
clear
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question_answer 112) The group of anamniota includes :
A)
reptiles and birds
done
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B)
birds and mammals
done
clear
C)
fishes and amphibians
done
clear
D)
reptiles and mammals
done
clear
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question_answer 113) The excretory material of bony fish is :
A)
urea
done
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B)
protein
done
clear
C)
ammonia
done
clear
D)
amino acid
done
clear
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question_answer 114) Different colour of frog skin are controlled by:
A)
hormones
done
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B)
melanocytes
done
clear
C)
nervous system
done
clear
D)
both and
done
clear
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question_answer 115) Blastula of frog has :
A)
blastopore
done
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B)
blastocoel
done
clear
C)
archenteron
done
clear
D)
gastropore
done
clear
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question_answer 116) Carotene pigment is found in the cells of :
A)
dermis
done
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B)
epidermis
done
clear
C)
adipose cell
done
clear
D)
both and
done
clear
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question_answer 117) Debove's membrane is a layer of:
A)
muscular tissue
done
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B)
epithelial tissue
done
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C)
connective tissue
done
clear
D)
all of the above
done
clear
View Answer play_arrow
question_answer 118) Achilles tendon is associated with :
A)
gluteus muscle
done
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B)
hamstring muscle
done
clear
C)
quadriceps muscle
done
clear
D)
gastrocnemius muscle
done
clear
View Answer play_arrow
question_answer 119) The leucocytes contain which of the following ln large quantity?
A)
Basophils
done
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B)
Neutrophils
done
clear
C)
Eosinophils
done
clear
D)
Monocytes
done
clear
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question_answer 120) Which part of our body secreted the hormone secreun ?
A)
Ileum
done
clear
B)
Stomach
done
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C)
Duodenum
done
clear
D)
Oesophagus
done
clear
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question_answer 121) During inspiration, the diaphragm :
A)
expands
done
clear
B)
shows no change
done
clear
C)
contracts and flattens
done
clear
D)
relaxes to become dome-shaped
done
clear
View Answer play_arrow
question_answer 122) The oxygen toxicity is related with :
A)
blood poisoning
done
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B)
collapse of alveolar walls
done
clear
C)
failure of ventilation of lungs
done
clear
D)
both and
done
clear
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question_answer 123) Cardiac output is determined by :
A)
heart rate
done
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B)
stroke volume
done
clear
C)
blood How
done
clear
D)
both and
done
clear
View Answer play_arrow
question_answer 124) The important function of lymph is to :
A)
transport oxygen to the brain
done
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B)
transport carbon dioxide to the lungs
done
clear
C)
return RBCs to the lymph nodes
done
clear
D)
return interstitial fluid to the blood
done
clear
View Answer play_arrow
question_answer 125) The lining of intestine and kidneys in humans is:
A)
keratinized
done
clear
B)
brush border
done
clear
C)
ciliated
done
clear
D)
none of these
done
clear
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question_answer 126) The yellow colour of urine is due to the presence of:
A)
urea
done
clear
B)
uric acid
done
clear
C)
urochrome
done
clear
D)
bilirubin
done
clear
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question_answer 127) The leydig cells secrete :
A)
oestrogen
done
clear
B)
testosterone
done
clear
C)
progesterone
done
clear
D)
corticosterone
done
clear
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question_answer 128) The function of pineal body is to :
A)
lighten the skin colours
done
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B)
control sexual behavior
done
clear
C)
regulates the period of puberty
done
clear
D)
all of the above
done
clear
View Answer play_arrow
question_answer 129) Which of the following nerve is purely motor nerve ?
A)
Vagus
done
clear
B)
Facial
done
clear
C)
Abducens
done
clear
D)
Trigeminal
done
clear
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question_answer 130) Which of the following part of a neuron is covered by fatty sheath ?
A)
Axon
done
clear
B)
Cyton
done
clear
C)
Dendrite
done
clear
D)
Node of Ranvier
done
clear
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question_answer 131) Synsacrum of fowl is consist of about:
A)
29 vertebrae
done
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B)
3 vertebrae
done
clear
C)
16 vertebrae
done
clear
D)
Single vertebrae
done
clear
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question_answer 132) In rabbit, head of the epididymis present at the head of the testes, is called :
A)
vas deferens
done
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B)
gubemaculum
done
clear
C)
cauda epididymis
done
clear
D)
caput epididymis
done
clear
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question_answer 133) The extra embryonic membranes of mammalian embryo are derived from :
A)
trophoblast
done
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B)
follicle cells
done
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C)
formative cells
done
clear
D)
inner cell mass
done
clear
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question_answer 134) The eggs of silk moth are :
A)
homolecithal
done
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B)
telotecithal
done
clear
C)
mesolecithal
done
clear
D)
centrolecithal
done
clear
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question_answer 135) Which of the following was formed in S. Miller's experiment ?
A)
Amino acids
done
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B)
Nucleic acids
done
clear
C)
UV radiations
done
clear
D)
Microspheres
done
clear
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question_answer 136) Trilobites were evolved during which of the following period ?
A)
Silurian
done
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B)
Cambrian
done
clear
C)
Ordovician
done
clear
D)
Precambrian
done
clear
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question_answer 137) Which of the following variations are temporary and have nothing to do with the last or next generation ?
A)
Hereditary variations
done
clear
B)
Discontinuous variations
done
clear
C)
Environmental variations
done
clear
D)
None of the above
done
clear
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question_answer 138) The modem man differs from the apes in :
A)
protruding eyes
done
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B)
spare body hair
done
clear
C)
wearing of clothes
done
clear
D)
arms shorter than legs
done
clear
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question_answer 139) The highest cranial capacity is/was present in :
A)
Java man
done
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B)
peking man
done
clear
C)
handy man
done
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D)
modem man
done
clear
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question_answer 140) Wild life is :
A)
any living organism in any habitat
done
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B)
predatory animals in their natural habitat
done
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C)
any living organisms in its natural habitat
done
clear
D)
economically important animals and plants
done
clear
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question_answer 141) A marriage between normal visioned man and colourblind woman will produce which of the following type of offsprings ?
A)
Normal sons and carrier daughters
done
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B)
Colourblind sons and carrier daughters
done
clear
C)
Colourblind sons and 50% carrier daughters
done
clear
D)
50% colourblind sons and 50% carrier daughters
done
clear
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question_answer 142) Haemophilia is a :
A)
deficiency disorder
done
clear
B)
Y-linked disorder
done
clear
C)
X-Iinked disorder
done
clear
D)
autosomal sex disorder
done
clear
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question_answer 143) UV radiation from sun causes which of the following disorder of eyes ?
A)
Cataract
done
clear
B)
Glaucoma
done
clear
C)
Dilation pupil
done
clear
D)
Some defect of retina
done
clear
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question_answer 144) The study of relationship between size and shape is called :
A)
allopatric
done
clear
B)
allelopathy
done
clear
C)
allometry
done
clear
D)
allogamy
done
clear
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question_answer 145) Which of the following is the most sparsely populated state of India ?
A)
Manipur
done
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B)
Rajasthan
done
clear
C)
Meghalaya
done
clear
D)
Arunachal Pradesh
done
clear
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question_answer 146) The natural parthenogenesis is found in :
A)
sharks
done
clear
B)
housefly
done
clear
C)
Drosophilia
done
clear
D)
honey bee
done
clear
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question_answer 147) The in terferons are :
A)
antiviral proteins
done
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B)
antibiotic proteins
done
clear
C)
antigen proteins
done
clear
D)
antibacterial particle
done
clear
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question_answer 148) Which of the following organism is useful in the preparation of roque fort cheese?
A)
Mucor
done
clear
B)
Rhizopus
done
clear
C)
Aspergillus
done
clear
D)
Penicillium
done
clear
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question_answer 149) Who coined the term antibiotics ?
A)
Darwin
done
clear
B)
Woodruff
done
clear
C)
Flemming
done
clear
D)
Selman Waksman
done
clear
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question_answer 150) A complex polysaccharide produced from sucrose by the bacterium Leuconostoc mesenreroides is :
A)
chitin
done
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B)
starch
done
clear
C)
cellulose
done
clear
D)
dextran
done
clear
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question_answer 151) The branch of biology, which deals with the study of processes and functions of an organism, is called:
A)
histology
done
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B)
anatomy
done
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C)
physiology
done
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D)
entomology
done
clear
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question_answer 152) Virus multiplies in :
A)
soil
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B)
dead tissue
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C)
living tissue
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D)
culture medium
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question_answer 153) Which of the following technique, other than microscopy is used for study of cell ?
A)
Maceration
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B)
Plasmolysis
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C)
Chroma tography
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D)
Autoradiography
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question_answer 154) Robert Hooke used the term cell 'n the year :
A)
1650
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B)
1665
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C)
1865
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D)
1960
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question_answer 155) Protein synthesis takes place in :
A)
ribosomes
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B)
chloroplasts
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C)
mitochondria
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D)
Golgi bodies
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question_answer 156) Replication of centriole occurs during :
A)
interphase
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B)
prophase
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C)
late prophase
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D)
late celophase
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question_answer 157) L-shaped chromosomes are also called :
A)
acrocentric
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B)
telocenrric
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C)
sub-metacentric
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D)
none of these
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question_answer 158) Which of the following is/are grouped under phanerogams ?
A)
Angiosperms
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B)
Gymnosperms
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C)
Pteridophytes
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D)
Both and
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question_answer 159) A bacterium divides after every 35 minutes. If a culture containing \[{{10}^{s}}\] cells per mL is grown, then cell concentration per mL after 175 minutes will be :
A)
\[175\times {{10}^{5}}\]
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B)
\[125\times {{10}^{5}}\]
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C)
\[48\times {{10}^{5}}\]
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D)
\[32\times {{10}^{5}}\]
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question_answer 160) Cladonia rangiferina is a/an :
A)
algae
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B)
lichen
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C)
fungus
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D)
angiosperm
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question_answer 161) Which of the following is an algal parasite ?
A)
Voivox
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B)
Ulothrix
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C)
Porphyra
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D)
Cep Weuros
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question_answer 162) Which of the following is true about bryophytes?
A)
They are thalloid
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B)
They contain chloroplast
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C)
They possess archegonia
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D)
All of the above
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question_answer 163) The kidney-shaped covering of sorus in Dryopteris, is called :
A)
placenta
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B)
ramemum
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C)
sporophyll
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D)
indusium
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question_answer 164) Replum is found in family :
A)
Labiatae
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B)
Malvaceae
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C)
Compositae
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D)
Brassicaceae
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question_answer 165) Which of the following is a wheat fruit ?
A)
Achene
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B)
Cypsella
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C)
Caryopsis
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D)
Endosperm
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question_answer 166) A gymnospermic leaf carries 16 chromosomes. The number of chromosomes in its endosperm is:
A)
24
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B)
16
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C)
12
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D)
8
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question_answer 167) Tyioses thickenings are seen in :
A)
collenchymas
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B)
phloem cells
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C)
ray parenchyma only
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D)
ray parenchyma and xylem cells
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question_answer 168) Which of the following plant shows multiple epidermis ?
A)
Croion
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B)
Allium
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C)
Nerium
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D)
Cucurbita
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question_answer 169) Double fertilization occurs among :
A)
aigae
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B)
hryophytes
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C)
angiosperms
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D)
gymnosperms
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question_answer 170) The endosperm in angiosperm develops from:
A)
zygote
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B)
secondary nucleus
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C)
chalazal polar nucleus
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D)
micropylar polar nucleus
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question_answer 171) The fertilization in which male gametes are carried through pollen tube is known as :
A)
syngamy
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B)
porogamy
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C)
siphonogamy
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D)
chalazogamy
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question_answer 172) Which of the following theory gives the latest explanation for the closure of stomata ?
A)
ABA theory
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B)
Munch theory
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C)
Starch glucose theory
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D)
Active K' transport theory
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question_answer 173) Loss of liquid water by guttation occurs through:
A)
hydathodes
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B)
stomata
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C)
cuticle
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D)
bark
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question_answer 174) Which of the following is the First compound that accepts carbon dioxide during dark phase of photosynthesis ?
A)
NADP
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B)
RuBP
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C)
Ferridoxin
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D)
Cytochrome
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question_answer 175) Oxygen which is liberated during hotosynthesis, comes from:
A)
\[C{{O}_{2}}\]
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B)
\[{{H}_{2}}O\]
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C)
chlorophyll
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D)
phosphoglyceric acid
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question_answer 176) In \[{{C}_{4}}\]plants, the carbon dioxide fixation occurs in :
A)
guard cells
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B)
spongy cells
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C)
palisade cells
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D)
bundle sheath cells
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question_answer 177) Ethyl alcohol is commercially manufactured from :
A)
bajra
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B)
grapes
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C)
maize
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D)
sugarcane
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question_answer 178) Last electron acceptor in respiration is :
A)
\[{{O}_{2}}\]
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B)
\[{{H}_{2}}\]
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C)
\[C{{O}_{2}}\]
done
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D)
\[NADH\]
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question_answer 179) A hormone delaying senescence is :
A)
auxin
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B)
cytokinins
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C)
ethylene
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D)
gibberellins
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question_answer 180) Which of the following induces flowering in long day plants ?
A)
Gibberellins
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B)
Cytokmin
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C)
Auxins
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D)
Ethylene
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question_answer 181) What name has been assigned to the genus produced by a cross between cabbage and radish ?
A)
Secale
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B)
Bursa pastoris
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C)
Lysogentcophyll
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D)
Raphanobrassica
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question_answer 182) Genetic counsellors can identify heterozygous individuals by :
A)
height of individuals
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B)
colour of individuals
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C)
screening procedures
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D)
all of the above
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question_answer 183) The term heterosis was first coined by :
A)
McClintock
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B)
Power
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C)
Swam in a than
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D)
None of these
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question_answer 184) Somatic hybridization is a technique of:
A)
natural breeding
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B)
natural pollination
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C)
artificial pollination
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D)
somatic cells hybridization
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question_answer 185) Which of the following is initiation codon in eukaryotes ?
A)
UAG
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B)
UGA
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C)
UAA
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D)
AUG
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question_answer 186) Which of the following species are restricted to an area ?
A)
Sibling species
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B)
Endemic species
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C)
All opatric species
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D)
Sympatric species
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question_answer 187) Biological concept of species is mainly based on:
A)
reproductive isolation
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B)
morphological features only
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C)
methods of reproduction only
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D)
morphology and methods of reproduction
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question_answer 188) Which of the following supports a dense population of plankton and littoral vegetation ?
A)
Oligotrophic
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B)
Eutrophic
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C)
Lithotrophic
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D)
Agroecotrophic
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question_answer 189) A man-made ecosystem is :
A)
less in diversity
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B)
more in diversity
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C)
man does not make ecosystem
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D)
more stable than natural ecosystem
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question_answer 190) Crop rotation is used by farmers to increase :
A)
soil fertility
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B)
community area
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C)
organic content of soil
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D)
nitrogenous content in the soil
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question_answer 191) Which of the following organism form the decomposers ?
A)
Pteris
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B)
Bacteria
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C)
Saprophytic fungi
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D)
Both and
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question_answer 192) Fly-ash is a/an :
A)
insectivorous plant
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B)
light airbom paniculate matter
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C)
new name of orchid plant
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D)
causal organism of various diseases
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question_answer 193) Some effects of sulphur dioxide and its transformation products on plant include :
A)
plasmolysis
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B)
Golgi body destruction
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C)
protein disintegration
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D)
chlorophyll destruction
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question_answer 194) Which of the following plant is used for the purification of water ?
A)
Beggiata
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B)
Chlorella
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C)
Spirogyra
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D)
Eichhomia
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question_answer 195) In the treatment of waste water discharge, which treatment stage involves biological treatment ?
A)
Primary treatment
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B)
Secondary treatment
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C)
Tertiary treatment
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D)
Reverse osmosis stage
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question_answer 196) Which of the following is considered to be the best chemical method of fixing atmospheric nitrogen ?
A)
Fisher method
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B)
Decan method
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C)
Haber-Bosch method
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D)
Paranas-Meyerhoff method
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question_answer 197) Desired improved varieties of economically useful crops are raised by :
A)
migration
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B)
biofenilizer
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C)
hybridization
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D)
natural selection
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question_answer 198) Indian rose wood tree is a common name of:
A)
Acacia
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B)
Shorea
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C)
Dalbergia
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D)
Eucalyptus
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question_answer 199) Emasculation is concerned with :
A)
hybridization
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B)
clonal selection
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C)
mass selection
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D)
pure line selection
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question_answer 200) Which of the following insecticide is obtained from the roots of Derris elleptica?
A)
Cinerin
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B)
Nicotine
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C)
Rotenone
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D)
Pyrethrum
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