question_answer 1) A bullet of mass 50 g is fired from a 5 kg gun with a velocity of 1 km/sec. The speed of recoil of the gun is:
A)
5 m/s
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B)
1 m/s
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C)
0.5 m/s
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D)
10 m/s
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question_answer 2) If a parallel beam of white light is incident on a converging lens, the colour which is brought to focus nearest to the lens is:
A)
violet
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B)
red
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C)
the mean colour
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D)
all the colours
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question_answer 3) A bulb rated at (100 W - 200 V) is used on a 100 V line. The current in the bulb is:
A)
\[\frac{1}{4}\] amp
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B)
4 amp
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C)
\[\frac{1}{2}\] amp
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D)
2 amp
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question_answer 4) A lens of focal power 0.5 dioptre is:
A)
a convex lens of focal length 0.5 in
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B)
a concave lens of focal length 0.5 m
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C)
a convex lens of foc.il length 2 m
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D)
a concave lens of focal length 2 m
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question_answer 5) A simple pendulum is set into vibrations. The bob of the pendulum comes to rest after sometime due to:
A)
air friction
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B)
mass of inertia
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C)
weight of the bob
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D)
combination of all the above
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question_answer 6) When the wavelength of light coming from a distant star is measured it is found shifted towards red. Then the conclusion is:
A)
the star is approaching the observer
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B)
the star recedes away from earth
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C)
data incomplete
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D)
none of these
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question_answer 7) The critical angle for glass-water boundary is C. If \[{{\mu }_{g}}=1.5\] 1.5 and \[{{\mu }_{\omega }}=\frac{4}{3}\] then the value of C is:
A)
\[{{\sin }^{-1}}\left( \frac{3}{2} \right)\]
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B)
\[{{\sin }^{-1}}\left( \frac{4}{3} \right)\]
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C)
\[{{\sin }^{-1}}\left( \frac{8}{9} \right)\]
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D)
\[{{\sin }^{-1}}\left( \frac{1}{2} \right)\]
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question_answer 8) Hot water kept in a beaker placed in a room cools from \[70{}^\circ C\] to \[60{}^\circ C\] in 4 minutes. The time taken by it to cool from\[69{}^\circ C\] to\[~59{}^\circ C\] will be:
A)
the same 4 minutes
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B)
more than 4 minutes
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C)
less than 4 minutes
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D)
we cannot say definitely
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question_answer 9) The ammeter A reads 2 A and the voltmeter V reads 20 V. The value of resistance R is:
A)
exactly 10 ohm
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B)
less than 10 ohm
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C)
more than 10 ohm
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D)
we cannot definitely say
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question_answer 10) A wire of resistance 12 ohm is in the form of a circle. The resistance between the ends of a diameter is :
A)
12 ohm
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B)
6 ohm
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C)
3 ohm
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D)
1.2 ohm
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question_answer 11) There are two liquid drops of different radii. The excess pressure inside over the outside is:
A)
more in the big drop
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B)
more in the small drop
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C)
equal in both drops
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D)
there is no excess pressure inside the drops
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question_answer 12) Two spheres made of same substance have diameters in the ratio 1 : 2. Their thermal capacities are in the ratio of:
A)
1 : 2
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B)
1 : 8
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C)
1 : 4
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D)
2 : 1
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question_answer 13) A photocell stops emission if it is maintained at 2 V positive potential. The energy of most energetic photoelectron is:
A)
2 eV
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B)
2 J
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C)
2 kJ
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D)
2 keV
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question_answer 14) Two identical wires have the same fundamental frequency of 400 Hz, when kept under the same tension. V the tension in one wire is increased by 2% the number of brats produced will be:
A)
4
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B)
2
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C)
8
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D)
1
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question_answer 15) A 10kg body hangs at rest from a rope wrapped around a cylinder of 0.2 m in diameter. The torque applied about the horizontal axis of the cylinder is:
A)
98 Nm
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B)
19.6 Nm
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C)
196 Nm
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D)
9.8 Nm
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question_answer 16) A force of 5 N acts on a 15 kg body initially at rest. The work done by the force during the first second of motion of the body is:
A)
5 J
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B)
\[\frac{5}{4}\]J
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C)
6 J
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D)
75 J
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question_answer 17) The refractive index of the material of the prism for violet colour is 1.69 and that for red is 1.65. If the refractive index for mean colour is 1.66 the dispersive power of the material of the prism:
A)
0.66
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B)
0.06
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C)
0.65
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D)
0.69
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question_answer 18) A proton is accelerated through 50000 V. Its energy will increase by:
A)
5000 eV
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B)
\[8\times {{10}^{-15}}\]
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C)
5000 J
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D)
50000 J
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question_answer 19) A ball thrown by a boy is caught by another after 2 sec. Some distance away in the same level. If the angle of projection is \[30{}^\circ ,\] the velocity of projection is:
A)
19.6 m/s
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B)
9.8 m/s
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C)
14.7 m/s
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D)
the data given is not sufficient to calculate the velocity
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question_answer 20) An unbanked curve has a radius of 60 m, The maximum speed at which a car can make a turn if the coefficient of static friction is 0.75 is:
A)
2.5 m/s
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B)
14 m/s
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C)
21 m/s
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D)
7 m/s
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question_answer 21) A body takes just twice as long to slide down a plane inclined at \[30{}^\circ ,\] to the horizontal as if the plane were frictionless, The coefficient of friction between the body and the plane is:
A)
\[\frac{\sqrt{3}}{4}\]
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B)
\[\sqrt{3}\]
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C)
\[\frac{4}{3}\]
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D)
\[\frac{3}{4}\]
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question_answer 22) A man sitting in a moving train hears the whistle of the engine. The frequency of the whistle is 600 Hz:
A)
the apparent frequency as heard by him is smaller than 600 Hz
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B)
the apparent frequency if larger than 600 Hz
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C)
the frequency as heard by him is 600 Hz
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D)
none of the above
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question_answer 23) Which of the following phenomena suggests the presence of electron energy levels in atoms?
A)
radioactive decay
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B)
isotopes
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C)
spectral lines
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D)
\[\alpha \]-particles scattering
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question_answer 24) The radius of the nucleus of an atom is about \[{{10}^{-15}}m\] and the radius of the observable universe is about \[{{10}^{23}}\,km\]. The ratio of these quantities is:
A)
\[1:{{10}^{41}}\]
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B)
15 :23
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C)
1: 38
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D)
\[1:{{10}^{38}}\]
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question_answer 25) The quantity of heat required to raise one mole through one degree kelvin for a monoatomic gas at constant volume is:
A)
\[\frac{3}{2}R\]
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B)
\[\frac{5}{2}R\]
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C)
\[\frac{7}{1}R\]
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D)
\[4R\]
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question_answer 26) Two condensers having capacities \[6\mu F\] and \[3\mu F\] are connected in parallel. The resultant capacity of the combination is:
A)
\[\frac{1}{2}\mu F\]
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B)
\[3\mu F\]
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C)
\[2\mu F\]
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D)
\[9\mu F\]
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question_answer 27) The angle of dip at a place is \[40.6{}^\circ \] and the intensity of the vertical component of earths magnetic field \[V=6\times {{10}^{-5}}\] tesla. The total intensity of the earths magnetic field \[I\] at this place is :
A)
\[7\times {{10}^{-5}}\] tesla
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B)
\[6\times {{10}^{-5}}\] tesla
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C)
\[5\times {{10}^{-5}}\] tesla
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D)
\[9.2\times {{10}^{-5}}\] tesla
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question_answer 28) At atmospheric pressure, the water boils at \[100{}^\circ C\]. If pressure is reduced, it will boil at :
A)
higher temperature
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B)
minimum temperature
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C)
at critical temperature
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D)
at the same temperature
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question_answer 29) The ratio of moments of an electron and \[\alpha \]-particle which are accelerated from rest by a potential difference of 100 V will be:
A)
1
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B)
\[\sqrt{\frac{2{{m}_{e}}}{{{m}^{a}}}}\]
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C)
\[\sqrt{\frac{{{m}_{e}}}{{{m}_{\alpha }}}}\]
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D)
\[\sqrt{\frac{{{m}_{e}}}{2{{m}_{\alpha }}}}\]
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question_answer 30) If for a given angle of projection, the horizontal range is doubled, the time of flight becomes:
A)
\[\frac{1}{\sqrt{2}}\]times
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B)
\[\sqrt{2}\] times
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C)
2 times
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D)
4 times
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question_answer 31) Two simple pendulum of lengths in the ratio 9 : 1 are started at time t = 0. They will again be in phase. After shorter pendulum has made n oscillation, where n is:
A)
2
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B)
1
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C)
1/2
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D)
3/2
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question_answer 32) The ratio of \[rms\] speed of hydrogen molecules to that of oxygen molecules at a given temperature will be:
A)
1 : 16
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B)
1 : 4
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C)
4 : 1
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D)
16 : 1
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question_answer 33) A stretched wire is divided into three segments whose frequencies are in the ratio 2 : 3 : 4 then the length are in the ratio:
A)
2 : 3 : 4
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B)
4 : 3 : 2
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C)
3 : 2 : 1
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D)
6 : 4 : 3
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question_answer 34) 34. \[\] of a transistor is 100 and input resistance is \[10\,\Omega \] and out resistance is \[10\,0\,\Omega \]. Then power gain of the transistor is: (under CE)
A)
\[{{10}^{3}}\]
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B)
\[{{10}^{4}}\]
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C)
\[{{10}^{5}}\]
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D)
\[{{10}^{6}}\]
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question_answer 35) If the radius of a copper wire carrying a current is doubled. The drift velocity of the electron will be:
A)
increase first then decrease
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B)
remain same
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C)
increase four time
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D)
decrease four times
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question_answer 36) The minimum deviation produced by a \[60{}^\circ \] prism is found to be\[30{}^\circ \]. The refractive index of the material of the prism is:
A)
1.414
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B)
0.707
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C)
1.5
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D)
1.4
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question_answer 37) A cell of emf 6 V and resistance 0.5 ohm is short circuited. The current in the cell is:
A)
3 amp
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B)
12 amp
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C)
24 amp
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D)
6 amp
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question_answer 38) The amount of heat energy required to convert 1 kg of ice at \[0{}^\circ C\] into steam at \[100{}^\circ C\] is:
A)
80 kcal
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B)
540 kcal
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C)
620 kcal
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D)
720 kcal
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question_answer 39) A heater draws a current of 2 A when connected to a 250 V source. The rate of energy dissipation is:
A)
500 W
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B)
1000 W
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C)
250 W
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D)
125W
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question_answer 40) Two like magnetic poles of strength 10 and 40 S.I. units are separated by a distance 30cm. The intensity of magnetic field is zero on the line joining them:
A)
at a point 10 cm from the stronger pole
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B)
at a point 20 cm from the stronger pole
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C)
at the mid-point
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D)
at infinity
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question_answer 41) If the same volume of two liquids of densities \[{{d}_{1}}\]and \[{{d}_{2}}\] flow in times \[{{t}_{1}}\] and \[{{t}_{2}}\] through the same capillary tube the ratio of their coefficients of viscosity is given by:
A)
\[\frac{{{d}_{1}}{{d}_{2}}}{{{t}_{1}}{{t}_{2}}}\]
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B)
\[\frac{{{d}_{1}}{{d}_{2}}}{{{t}_{2}}{{t}_{1}}}\]
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C)
\[\frac{{{d}_{1}}{{d}_{1}}}{{{t}_{2}}{{t}_{2}}}\]
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D)
\[\frac{{{t}_{1}}}{{{t}_{2}}}\]
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question_answer 42) An electron enters between two horizontal plates separated by 2 mm and having a potential difference of 1000 V. The force on electron is:
A)
\[\text{8 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-12}}}\text{N}\]
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B)
\[\text{8 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-14}}}\text{N}\]
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C)
\[\text{8 }\!\!\times\!\!\text{ 1}{{\text{0}}^{9}}\text{N}\]
done
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D)
\[\text{8 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{14}}}\text{N}\]
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question_answer 43) A man travels 4 km due East and then 3 km due North. The magnitude of his displacement is:
A)
7 km
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B)
1 km
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C)
5 km
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D)
None of these
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question_answer 44) The mass of an electron is \[9.11\,\times {{10}^{-31}}\,kg\]. Number of electrons required to make 10 g is:
A)
\[\text{1}\text{.1 }\!\!\times\!\!\text{ 1}{{\text{0}}^{27}}\]
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B)
\[\text{11 }\!\!\times\!\!\text{ 1}{{\text{0}}^{27}}\]
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C)
\[\text{9}\text{.11 }\!\!\times\!\!\text{ 1}{{\text{0}}^{-28}}\]
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D)
\[\text{9}\text{.11 }\!\!\times\!\!\text{ 1}{{\text{0}}^{28}}\]
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question_answer 45) The action of a nib split at the top is explained by:
A)
gravity flow
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B)
diffusion of fluid
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C)
capillary action
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D)
osmosis of liquid
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question_answer 46) For a triode the plate resistance is 25000 ohm and mutual conductance is \[1.2\,\times {{10}^{-3}}\,mho\]. What will be the amplification factor?
A)
30
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B)
25
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C)
12
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D)
120
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question_answer 47) A nucleus of an element \[_{84}{{X}^{202}}\] emits an \[\alpha \]-particle first, a \[\text{-}\]particle next and then a gamma photon. The final nucleus formed has an atomic number :
A)
200
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B)
199
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C)
83
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D)
198
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question_answer 48) The half-life of random is 3.8 days. Three fourth of a radon sample decay in:
A)
5.02 days
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B)
15.2 days
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C)
7.6 days
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D)
11.4 days
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question_answer 49) The saturation vapour pressure of waters 373 K is:
A)
152 cm of mercury
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B)
76 cm of mercury
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C)
zero
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D)
depends on external conditions an hence no definite value
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question_answer 50) If the temperature of a black body increased rom \[27{}^\circ C\] to \[327{}^\circ C\], the radiation emitted increases by a fraction of:
A)
16
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B)
8
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C)
4
done
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D)
2
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question_answer 51) The echo of a gunshot is heard 8 secur after the gun is fired. How far from him (lie surface that reflects the sound (velocity of sound in air = 350 m/s)
A)
1400 m
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B)
2800 m
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C)
700 m
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D)
350 m
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question_answer 52) Two wires of brass of diameter 1 mm an 2 mm have equal weight. Their electrical resistance will be in the ratio :
A)
16 : 1
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B)
1 : 16
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C)
1 : 4
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D)
4 : 1
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question_answer 53) The ratio of the induced emf in a coli having 50 turns and rotating with 50 Hz to that of the induced emf in a coil having 100 turns and rotating with 150 Hz in the same magnetic field is:
A)
1 : 2
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B)
2 : 3
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C)
3 : 2
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D)
1 : 6
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question_answer 54) A body is sliding on a smooth inclined plane requires 4 second to reach the bottom starting from rest at the top. How much rime does it take to cover \[\frac{1}{4}\] the distance starting from rest?
A)
1 s
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B)
2 s
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C)
3 s
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D)
4 s
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question_answer 55) Watt per ampere is unit of:
A)
electric potential
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B)
electric field
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C)
electric energy
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D)
electric power
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question_answer 56) A glass slab of thickness 4 cm contains same number of waves as 5 cm thickness of water, when both are traversed by the same monochromatic light. If the refractive index of water is 4/3, what is the refractive index of glass:
A)
5/3
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B)
5/4
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C)
16/5
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D)
1.5
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question_answer 57) The current through a lamp decreases by 1%. Then the power of the lamp will drop by:
A)
1%
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B)
2%
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C)
4%
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D)
0.61%
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question_answer 58) The first exitation energy of hydrogen atom is X eV, Then ionization energy of the atom would be : (in eV)
A)
\[\frac{3X}{4}\]
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B)
\[\frac{X}{3}\]
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C)
\[\frac{X}{4}\]
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D)
\[\frac{4X}{3}\]
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question_answer 59) \[{{\mu }_{0}}\] and \[{{\varepsilon }_{0}}\] demote the permeability and permittivity of free space the dimension of \[{{\mu }_{0}}{{\varepsilon }_{0}}\] are:
A)
\[\text{ }\!\![\!\!\text{ L}{{\text{T}}^{\text{-1}}}\text{ }\!\!]\!\!\text{ }\]
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B)
\[\text{ }\!\![\!\!\text{ }{{\text{L}}^{-2}}{{\text{T}}^{2}}\text{ }\!\!]\!\!\text{ }\]
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C)
\[[{{M}^{-1}}{{L}^{-3}}{{\theta }^{2}}{{T}^{2}}]\]
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D)
\[[{{M}^{-1}}{{L}^{-3}}{{\theta }^{2}}{{T}^{2}}]\]
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question_answer 60) If the radius of earth is reduced by 1% without changing the mass, then change in the acceleration due to gravity will be:
A)
2% decrease
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B)
2% increase
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C)
1% increase
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D)
1% decrease
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question_answer 61) The element which forms ions in the dimeric state is :
A)
copper
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B)
nickel
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C)
silver
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D)
mercury
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question_answer 62) Red phosphorus is chemically less reactive than white phosphorus because :
A)
it has a polymeric structure
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B)
it does not contain tetrahedral\[{{P}_{4}}\]molecules
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C)
it does not contain \[PP\]bonds
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D)
it has a linear structure
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question_answer 63) Which of the following particles is not present in the nucleus?
A)
Neutron
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B)
Proton
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C)
Electron
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D)
None of these
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question_answer 64) What kind of radioactive decay does not lead to the formation of a daughter nucleus that is an isobar of the parent nucleus?
A)
\[\alpha \]-partide
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B)
\[\beta \]-particle
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C)
Positron
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D)
Electron capture
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question_answer 65) The smallest among the following ion is:
A)
\[M{{g}^{2+}}\]
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B)
\[N{{a}^{+}}\]
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C)
\[B{{a}^{2+}}\]
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D)
\[A{{l}^{3+}}\]
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question_answer 66) When a molten ionic hydride is electrolysed :
A)
hydrogen is liberated at cathode
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B)
hydrogen is liberated at anode
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C)
there is no reaction
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D)
\[{{H}^{-}}\]ions produced, migrate to the cathode
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question_answer 67) The oxidation number of nickel in\[{{K}_{4}}[Ni{{(CN)}_{4}}]\] is:
A)
- 2
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B)
- 1
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C)
+ 2
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D)
0
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question_answer 68) Which of the following has minimum ionization energy?
A)
Ge
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B)
Sc
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C)
As
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D)
Br
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question_answer 69) Which one of the following compounds, is used in photography?
A)
\[AgCl\]
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B)
\[AgBr\]
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C)
\[AgI\]
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D)
\[AgN{{O}_{3}}\]
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question_answer 70) p-orbitals in a given shell can accommodate upto:
A)
four electrons
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B)
two electrons with parallel spin
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C)
six electrons
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D)
two electrons with opposite spins
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question_answer 71) The radiations from a naturally occurring radio element, as seen after deflection in a magnetic field in one direction, are:
A)
definitely \[\]-rays
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B)
definitely \[\]-rays
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C)
both a and \[\]-rays
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D)
either a or \[\]-rays
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question_answer 72) The carbonate which does not leave any residue on heating is:
A)
\[N{{a}_{2}}C{{O}_{3}}\]
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B)
\[CuC{{O}_{3}}\]
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C)
\[A{{g}_{2}}C{{O}_{3}}\]
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D)
\[{{(N{{H}_{4}})}_{2}}C{{O}_{3}}\]
done
clear
View Answer play_arrow
question_answer 73) Which is the strongest acid?
A)
\[HCl{{O}_{4}}\]
done
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B)
\[{{H}_{2}}S{{O}_{4}}\]
done
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C)
\[HCl\]
done
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D)
\[HN{{O}_{3}}\]
done
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question_answer 74) The compound which does not possess a peroxide linkage is:
A)
\[N{{a}_{2}}{{O}_{2}}\]
done
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B)
\[Cr{{O}_{5}}\]
done
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C)
\[{{H}_{2}}S{{O}_{5}}\]
done
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D)
\[Pb{{O}_{2}}\]
done
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question_answer 75) The type of glass used in making lenses and prisms is:
A)
flint glass
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B)
jena glass
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C)
pyrex glass
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D)
quartz glass
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question_answer 76) The oxide which is not reduced by hydrogen is:
A)
\[A{{g}_{2}}O\]
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B)
\[{{K}_{2}}O\]
done
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C)
\[F{{e}_{2}}{{O}_{3}}\]
done
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D)
\[{{P}_{4}}{{O}_{10}}\]
done
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question_answer 77) Which of the following complex has paramagnetic behaviour?
A)
\[{{K}_{4}}[Fe{{(CN)}_{6}}]\]
done
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B)
\[[Cu{{(N{{H}_{3}})}_{5}}Cl]\]
done
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C)
\[{{[NiC{{l}_{4}}]}^{2-}}\]
done
clear
D)
all of these
done
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question_answer 78) The half-life period of 10 g of radium sample is 1600 year. If 20 g of sample is taken, in how many years will it be remained 10 g?
A)
1600 years
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B)
3200 years
done
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C)
800 years
done
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D)
none of these
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question_answer 79) Hydrogen has a tendency to gain one electron to acquire helium configuration. In this respect, it resembles:
A)
halogens
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B)
actinides
done
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C)
transition elements
done
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D)
alkali metals
done
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question_answer 80) The correct set of four quantum number of the valence electron (outermost) of rubidium (Z = 37) is:
A)
\[5,0,0,+\frac{1}{2}\]
done
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B)
\[5,1,0,+\frac{1}{2}\]
done
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C)
\[5,1,1,+\frac{1}{2}\]
done
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D)
\[6,0,0,+\frac{1}{2}\]
done
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question_answer 81) According to kinetic theory of gases:
A)
there are inter-molecular attractions
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B)
there are no inter-molecular attractions
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C)
the velocity of the molecules decreases with each collision
done
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D)
molecules have considerable volume
done
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question_answer 82) One litre of a gas is at a pressure of \[{{10}^{-6}}\]mm of mercury at\[25{}^\circ C\]. How many molecules are present in the vessel?
A)
\[3.2\times {{10}^{6}}\]
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B)
\[3.2\times {{10}^{10}}\]
done
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C)
\[3.2\times {{10}^{13}}\]
done
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D)
\[3.2\times {{10}^{4}}\]
done
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View Answer play_arrow
question_answer 83) The heat of formation of \[PC{{l}_{5}}(s)\] will be: Given: \[2P(s)+3C{{l}_{2}}(g)\xrightarrow{{}}2PC{{l}_{3}}(l);\] \[\Delta H=-151.8\,k\,cal\] \[PC{{l}_{3}}(l)+C{{l}_{2}}(g)\xrightarrow{{}}PC{{l}_{5}}(s)\,;\] \[\Delta H=-\,32.8\,k\,cal\]
A)
\[-108.7\text{ }k\,cal\]
done
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B)
\[+108.7\text{ }k\,cal\]
done
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C)
\[-184.6\text{ }k\,cal\]
done
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D)
\[+184.6\text{ }k\,cal\]
done
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question_answer 84) Which of the following compounds, is sparingly soluble in aqueous ammonia?
A)
\[AgI\]
done
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B)
\[AgBr\]
done
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C)
\[AgCl\]
done
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D)
\[CuC{{l}_{2}}\]
done
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question_answer 85) The equilibrium pressure of \[C{{O}_{2}},CO\] and \[{{O}_{2}}\] are 0.6, 0.4 and 0.2 atmospheres respectively. \[{{K}_{p}}\] for the reaction \[2C{{O}_{2}}\rightleftharpoons 2CO+{{O}_{2}}\]is:
A)
0.074
done
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B)
0.0533
done
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C)
0.177
done
clear
D)
0.088
done
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question_answer 86) The addition of an inert gas at constant volume to an equilibrium will favour :
A)
the forward reaction
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B)
the reverse reaction
done
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C)
both reactions
done
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D)
neither forward nor backward reaction
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View Answer play_arrow
question_answer 87) 20 ml of a N-solution of \[KMn{{O}_{4}},\] just reacts with 20 ml of a solution of oxalic acid. The weight of oxalic acid crystals 1 litre of the solution is:
A)
31.5 g
done
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B)
126 g
done
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C)
63 g
done
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D)
6.3 g
done
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question_answer 88) Colloidal solution of gold is prepared by:
A)
colloidal-mill method
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B)
reduction method
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C)
double decomposition method
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D)
Bredigs arc method
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question_answer 89) For the reaction A + B\[\xrightarrow{{}}\]products, doubling the concentration of A, the rate of the reaction is doubled, but on doubling the concentration of B rate remains unaltered. The over-all order of the reaction is:
A)
1
done
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B)
0
done
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C)
2
done
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D)
3
done
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question_answer 90) The osmotic pressure of a dilute solution of a non-volatile solute, is:
A)
directly proportional to its temperature
done
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B)
directly proportional to its absolute temperature
done
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C)
independent of the number of solute
done
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D)
independent of the nature of solvent
done
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question_answer 91) Which of the following statements regarding a chemical equilibrium, is wrong?
A)
An equilibrium can be shifted by altering the temperature or pressure
done
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B)
An equilibrium is dynamic
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C)
The same state of equilibrium is reached whether one starts with the reactants or the products
done
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D)
The forward reaction is favoured by the addition of a catalyst
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question_answer 92) What will be the entropy change, if one mole of water at 373K is converted into steam? (latent heat of varporisation of water is \[4.07\times {{10}^{4}}J\,mo{{l}^{-1}}\])
A)
\[10.91\,J{{K}^{-1}}\,mo{{l}^{-1}}\]
done
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B)
\[109.1\,J{{K}^{-1}}\,mo{{l}^{-1}}\]
done
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C)
\[2.07\,J{{K}^{-1}}\,mo{{l}^{-1}}\]
done
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D)
cannot be calculated
done
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question_answer 93) The total entropy of the universe always tends to reach at maximum. This statement is given by, which law of thermodynamics?
A)
First law
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B)
Second law
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C)
Third law
done
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D)
Zeroth law
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View Answer play_arrow
question_answer 94) What is the standard free-energy change at \[25{}^\circ C\] for the reaction: \[Cd(s)+P{{b}^{2+}}(aq.)\xrightarrow{{}}C{{d}^{2+}}(aq.)+Pb(s)\] Given: \[E_{C{{d}^{2+}}/Cd}^{\text{o}}=-\,0.403\,V,\] \[E_{P{{b}^{2+}}/Pb}^{\text{o}}=-\,0.126\,V\]
A)
\[-\,5.346\text{ }kJ\]
done
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B)
\[-\,53.46\text{ }kJ\]
done
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C)
\[-\,106.92\text{ }kJ\]
done
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D)
\[-\,10.69\text{ }kJ\]
done
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question_answer 95) When salicylic acid is heated with zinc-powder, what is obtained?
A)
Benzoic acid
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B)
Phenol
done
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C)
o-hydroxy benzyl alcohlol
done
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D)
Salicaldehyde
done
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question_answer 96) Buna-S is polymer of:
A)
butadiene and isobutylene
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B)
styrene
done
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C)
butadiene and styrene
done
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D)
chloroprene
done
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question_answer 97) Sodium phenoxide, when treated with\[C{{O}_{2}}\] under pressure, give:
A)
done
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B)
done
clear
C)
done
clear
D)
none of these
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question_answer 98) The weakest base among the following is:
A)
\[C{{H}_{3}}N{{H}_{2}}\]
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B)
\[{{(C{{H}_{3}})}_{2}}NH\]
done
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C)
\[{{(C{{H}_{3}})}_{3}}N\]
done
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D)
\[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]
done
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question_answer 99) Chlorine reacts with ethanol to give:
A)
ethyl chloride
done
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B)
chloroform
done
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C)
acetaldehyde
done
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D)
chloral
done
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question_answer 100) Which of the following is the sweetest sugar?
A)
Sucrose
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B)
Glucose
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C)
Fructose
done
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D)
Lactose
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question_answer 101) In the presence of dil.NaOH, two molecules of an aldehyde may condense to form:
A)
an acid
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B)
a \[\]-hydroxy aldehyde
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C)
a \[\]-hydroxy ketone
done
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D)
an alcohol
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question_answer 102) Which of the following is false regarding diethyl ether?
A)
It does not possess a dipole moment
done
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B)
It is soluble in water
done
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C)
It is soluble in concentrated \[{{H}_{2}}S{{O}_{4}}\]
done
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D)
It is inflammable
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question_answer 103) Which of the following methods, is not used for purification of liquids?
A)
Chromatography
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B)
Steam distillation
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C)
Distillation
done
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D)
Sublimation
done
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question_answer 104) The alkaline hydrolysis of an ester represented by \[RCOOR+O{{H}^{-}}\xrightarrow{{}}RCO{{O}^{-}}+ROH\]is
A)
first order, bimolecular
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B)
second order, bimolecular
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C)
bimolecular but zero order
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D)
unimolecular, first order
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question_answer 105) The action of benzoyl chloride on hydroxy compounds in alkaline medium, is called:
A)
Schotten-Baumann reaction
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B)
Friedel Crafts reaction
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C)
Perkin reaction
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D)
Kolbes reaction
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question_answer 106) The structural formula of benzylphenyl ketone is:
A)
\[{{C}_{6}}{{H}_{5}}CO{{C}_{6}}{{H}_{5}}\]
done
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B)
\[{{C}_{6}}{{H}_{5}}CO\cdot CO{{C}_{6}}{{H}_{5}}\]
done
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C)
\[{{C}_{6}}{{H}_{5}}C{{H}_{2}}COC{{H}_{2}}{{C}_{6}}{{H}_{5}}\]
done
clear
D)
\[{{C}_{6}}{{H}_{5}}C{{H}_{2}}CO{{C}_{6}}{{H}_{5}}\]
done
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View Answer play_arrow
question_answer 107) The compound which reacts fastest with Lucas reagent is:
A)
butan-1-ol
done
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B)
butan-2-ol
done
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C)
2-methyl propan-1-ol
done
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D)
2-methyl propan-2-ol
done
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View Answer play_arrow
question_answer 108) What is the product, when phenol is treated with chloroform in presence of alkali?
A)
Salcylic acid
done
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B)
Salicaldehyde
done
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C)
Benzoic acid
done
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D)
Phenacitin
done
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question_answer 109) In the presence of\[HCl\]two molecules of acetone condense to form:
A)
mesityloxide
done
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B)
forone
done
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C)
4-methyl-2-pentanone
done
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D)
4-methyl-2-pentanoic acid
done
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question_answer 110) The product obtained, when acetophcnone is treated with zinc-amalgum in cone. \[HCl,\]is:
A)
benzaldehyde
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B)
benzyl alcohol
done
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C)
ethyl benzene
done
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D)
cinnamic acid
done
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View Answer play_arrow
question_answer 111) When ethyne is passed through dilute \[{{H}_{2}}S{{O}_{4}}\] containing \[{{H}_{g}}S{{O}_{4}},\] it forms:
A)
ethanol
done
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B)
ethanoic acid
done
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C)
ethanal
done
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D)
ethene
done
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question_answer 112) Which among the following pairs of reagents will not give an ether?
A)
\[{{C}_{2}}{{H}_{5}}Br+{{(C{{H}_{3}})}_{3}}CONa\]
done
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B)
\[{{C}_{2}}{{H}_{5}}Br+{{C}_{2}}{{H}_{5}}ONa\]
done
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C)
\[{{C}_{6}}{{H}_{5}}Br+{{C}_{3}}{{H}_{7}}ONa\]
done
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D)
\[{{C}_{2}}{{H}_{5}}Br+{{C}_{6}}{{H}_{5}}ONa\]
done
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question_answer 113) The compound required for the formation of a thermo-setting polymer with methanal is:
A)
benzene
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B)
ammonia
done
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C)
benzaldehyde
done
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D)
phenol
done
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question_answer 114) Which of the following gives lactic acid on treating with HCN followed by hydrolysis?
A)
\[HCHO\]
done
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B)
\[C{{H}_{3}}CHO\]
done
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C)
\[{{C}_{6}}{{H}_{5}}CHO\]
done
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D)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
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question_answer 115) pH of a solution is 5. Its hydroxyl ion concentration is:
A)
\[5\]
done
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B)
\[10\]
done
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C)
\[{{10}^{-5}}\]
done
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D)
\[{{10}^{-9}}\]
done
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question_answer 116) Which of the following \[{{K}_{a}}\] values, represents the strongest acid?
A)
\[{{10}^{-4}}\]
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B)
\[{{10}^{-8}}\]
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C)
\[{{10}^{-5}}\]
done
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D)
\[{{10}^{-2}}\]
done
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question_answer 117) Solder is an alloy of:
A)
\[Pb+Cu\]
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B)
\[Cu+Sn\]
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C)
\[Pb+Sn\]
done
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D)
\[Sn+Al\]
done
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question_answer 118) Phosgene, a poisonous gas, is chemically:
A)
\[POC{{l}_{2}}\]
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B)
\[POC{{l}_{3}}\]
done
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C)
\[COC{{l}_{2}}\]
done
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D)
\[S{{O}_{2}}C{{l}_{2}}\]
done
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question_answer 119) Which is the purest form of iron?
A)
Pig iron
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B)
Cast iron
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C)
Wrought iron
done
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D)
Steel
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question_answer 120) Isotonic solution have same:
A)
boiling point
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B)
freezing point
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C)
molar concentration
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D)
vapour pressure
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question_answer 121) In nature, autogamy in plants is avoided since the seeds produced:
A)
are fewer in number
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B)
do not germinate successfully
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C)
do not produce healthy plant
done
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D)
all of the above
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question_answer 122) Dialysis is performed on patients suffering from:
A)
heart trouble
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B)
lung trouble
done
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C)
ulcer
done
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D)
kidney failure
done
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question_answer 123) Dragonflies play an important role because they:
A)
arc pollinating agent
done
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B)
feed entirely on mosquito adults and mosquito larva
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C)
add to silvan beauty
done
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D)
are vectors for disease carrying germs
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question_answer 124) Which type of soil is best suited for the cultivation of cotton in India?
A)
Loamy soil
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B)
Black soil
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C)
Sandy soil
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D)
Clayey soil
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question_answer 125) The aerial vertical stout part of the banana is formed the:
A)
stem
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B)
leaf sheaths
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C)
lamina of leaves
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D)
midrib of leaves
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question_answer 126) In fern plant, the ejection of spores with force is achieved by the:
A)
sporangiophore
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B)
annulus
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C)
stomium
done
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D)
indusium
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question_answer 127) The commercial bath sponges belongs to:
A)
Protozoa
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B)
Porifera
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C)
Coetenterata
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D)
Echinodermata
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question_answer 128) The part of the leaf between the upper epidermis and the lower epidermis is called:
A)
mid rib
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B)
hypodermis
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C)
mesophyll
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D)
palisade
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question_answer 129) The smallest flower is that of the:
A)
onion
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B)
mustard
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C)
fig
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D)
Wolff Microscopia
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question_answer 130) Ginger is a stem, not a root because it has:
A)
food storage
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B)
burning taste
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C)
nodes and internodes
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D)
flowers
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question_answer 131) Which of the following grouping is correct?
A)
Amoeba, Paramecium, Plasmodium
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B)
Tape worm, Liver fluke, Ascaris
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C)
Butterfly, Cockroach, Oyster
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D)
Parrot, King fisher, Rana
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question_answer 132) Which part of the sperm has the aggregation of Golgi bodies?
A)
Middle piece
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B)
Tail
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C)
Axial filament
done
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D)
Acrosome
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question_answer 133) The seeds of Cycas are:
A)
enclosed by fruit wall
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B)
enclosed within the flower
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C)
naked and there is no fruit wall
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D)
absent
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question_answer 134) The gaseous hormone inducing die ripening of fruits is:
A)
auxin
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B)
gibberellin
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C)
florigen
done
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D)
ethylene
done
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question_answer 135) Kwashiorkor, an African word to signify rejected ones affecting children of under developed and developing countries with symptoms of stunted growth/ loss of appetite, anaemia, protruding bellies, matchstick legs, resulting in great mortality, is due the deficiency of:
A)
vitamins
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B)
fats
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C)
proteins
done
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D)
carbohydrates
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question_answer 136) A hyphae which is multinucleated and asptate is known as:
A)
hormogone
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B)
mycelium
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C)
coenocytic
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D)
hypanthodium
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question_answer 137) The antherozoids are the:
A)
pollen grains produced from anthers
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B)
biciliated male gametes of fern
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C)
antheridial clusters
done
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D)
female gametes
done
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question_answer 138) The blood corpuscle that engulf bacteria that get into our body is termed:
A)
erythrocyte
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B)
phagocyte
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C)
thrombocyte
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D)
eosinophils
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question_answer 139) Human appendix is:
A)
useful in cellulose digestion
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B)
an excretory structure
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C)
a vestigial organ
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D)
helpful in absorbing water
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question_answer 140) Whales are aquatic mammals and the respiration is with the help of:
A)
gills
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B)
lungs
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C)
skin
done
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D)
oral cavity
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question_answer 141) The tusk of the elephant is formed:
A)
from incisors
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B)
from canines
done
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C)
of prolongation of the skull
done
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D)
by the thickening of the skin of the head
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question_answer 142) Primordial atmosphere was believed to have contained:
A)
ammonia
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B)
methane
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C)
water vapour
done
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D)
all of these
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question_answer 143) Nitrates are good for increasing the food production. At the same time it has become harmful to man, because of pollution of water when it is taken with drinking water since it:
A)
kills the intestinal symbiotic bacteria
done
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B)
produces excess of amino acids in our body
done
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C)
upsets the enzyme production
done
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D)
combines with the haemoglobin of R.B.C reducing oxygen transportability termed methaeglobinemia
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question_answer 144) During voyaga, sea sickness is caused by the:
A)
lungs
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B)
internal ears (semi-circular canal)
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C)
upset of stomach
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D)
muscles
done
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question_answer 145) Mulberry-growing is associated with the:
A)
control of insect pests
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B)
silk worm culture (Sericulture)
done
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C)
support for the grape vine
done
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D)
fodder for the cattle
done
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question_answer 146) During hot days, the leaves wilt because:
A)
the heat affects the chloroplasts
done
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B)
of excess of transpiration
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C)
of excess of photosynthesis
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D)
too much \[C{{O}_{2}}\] is given out
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question_answer 147) During the second conception, if the \[R{{h}^{-}}\] mother has \[R{{h}^{+}}\] foetus, it will:
A)
have no effect
done
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B)
enable the embryo grow fast
done
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C)
cause erthroblastosis foetus when R.B.C. of foetus get destroyed at time lending to abortion.
done
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D)
change the \[R{{h}^{+}}\] of foetus to \[R{{h}^{-}}\]
done
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question_answer 148) Which of the following disease is caused by air pollution?
A)
Rheumatism
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B)
Heart failure
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C)
Bronchitis
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D)
Leukemia
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question_answer 149) The term test-tube baby implies the:
A)
fertilization and the development of the ovum in the test tube
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B)
fertilization in the uterus and the development in the test tube
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C)
fertilization in the test tube and the development in the uterus
done
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D)
fertilization and development in the uterus
done
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question_answer 150) An anti-viral substance, known to prevent the synthesis of new virus in the cell, is known as:
A)
transferon
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B)
anti-body
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C)
interferon
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D)
inferno
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question_answer 151) Cataract is caused by:
A)
accumulation of the dust in the eye
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B)
lens getting opaque
done
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C)
nerves supplying the eyes getting weak
done
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D)
conjective becoming thickened
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question_answer 152) Grafting involved the formation of a young plant:
A)
with the root of scion and shoot of stalk
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B)
with the root of stalk and shoot of scion
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C)
by stem cutting
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D)
by layering
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question_answer 153) Cleistogamous condition is present in:
A)
Brassica
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B)
Solanum
done
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C)
Commelina
done
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D)
Allium cepa
done
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question_answer 154) Heterothallism signifies:
A)
male and female sex organs occurring in the same thallus
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B)
male and female sex organs occurring in different thallus
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C)
the differentiation of thallus shapes
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D)
the absence of sex organs
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question_answer 155) Final product of carbohydrate digestion is:
A)
maltose
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B)
sucrose
done
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C)
lactose
done
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D)
glucose
done
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question_answer 156) Valves are present in:
A)
arteries
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B)
veins
done
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C)
capillaries
done
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D)
bile duct
done
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question_answer 157) In the hens egg the albumen is twisted on either ends forming two chords termed the:
A)
chalaza
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B)
latebra
done
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C)
blastodisc
done
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D)
nucleus of Pander
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question_answer 158) In the chlorophyta, the reserve food of protein surrounded by starch, form a compact body termed:
A)
paramylum
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B)
pyrenoid
done
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C)
volutin
done
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D)
eye spot
done
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question_answer 159) In plants respiration takes place:
A)
during day only
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B)
during night only
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C)
all the 24 hours
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D)
at dusk
done
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question_answer 160) The plant which is the source of commercial rubber is:
A)
Euphorbia
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B)
Ficus
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C)
Parthenium
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D)
Haevia brasiliensis
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question_answer 161) Androgens are secreted by:
A)
testis
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B)
ovary
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C)
placenta
done
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D)
none of these
done
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question_answer 162) In blue-green algae photosynthetic pigments are located in:
A)
thylakoid
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B)
chromoplasm
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C)
chloroplast
done
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D)
centroplasm
done
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question_answer 163) Calcium level in the blood is controlled by the:
A)
thyroxin
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B)
parathormone
done
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C)
insulin
done
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D)
glucagon
done
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question_answer 164) Eggs of Culex are:
A)
boat shaped
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B)
cigar shaped
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C)
elongated
done
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D)
round
done
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question_answer 165) The total larval period in housefly is:
A)
2-4 days
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B)
4-6 days
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C)
6-8 days
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D)
10-14 days
done
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question_answer 166) Insulin, the effective hormone for diabetes can be got only from animals and cannot be artificially produced. Recently, humulin a substance allied to insulin has been produced by introducing a coded DNA into the body of bacteria and this achievement is through:
A)
cloning
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B)
inoculation
done
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C)
hybridization
done
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D)
genetical engineering
done
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question_answer 167) The cell wall of the fungus contains:
A)
pectin and cellulose
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B)
cellulose and chitin
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C)
chitin and pectin
done
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D)
silica and pectin
done
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question_answer 168) When the blood comes out of the blood vessels, it thick and turns jelly like, plugging the wound, and it is termed:
A)
agglutination
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B)
coagulation
done
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C)
haemolysis
done
clear
D)
haemophilia
done
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question_answer 169) Sea urchin eggs are termed as:
A)
cleidoic egg
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B)
microlecithal egg
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C)
mesolecithal egg
done
clear
D)
atecithal egg
done
clear
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question_answer 170) In the human brain, the corpora quadriogemina represents the:
A)
fore brain
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B)
mid brain
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C)
hind brain
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D)
spinal cord
done
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question_answer 171) Planktons are organisms which arc:
A)
surface floaters
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B)
free swimmers
done
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C)
deep sea forms
done
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D)
burrowing forms
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question_answer 172) When the centromere of a chromosome is located near the tip of the chromosome, the position is described as:
A)
acrocentric
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B)
metacentric
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C)
telocentric
done
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D)
acentric
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question_answer 173) The reptiles and birds cannot afford to lose water and hence, they excrete:
A)
ammonia
done
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B)
urea
done
clear
C)
creatinine
done
clear
D)
uric acid
done
clear
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question_answer 174) The fertilized secondary nucleus of the ovule, during double fertilization, establishes the:
A)
seed coat
done
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B)
embryo plant
done
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C)
endosperm
done
clear
D)
pericarp
done
clear
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question_answer 175) The type of inflorescence where in the main axis has limited growth and ends in a flower, is termed:
A)
racemose
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B)
cymose
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C)
hypanthodium
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D)
cyathium
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question_answer 176) In man the meiotic cell division takes place in:
A)
Gonads
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B)
nerve cells
done
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C)
muscular tissue
done
clear
D)
none of these
done
clear
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question_answer 177) The ventricles of the brain and the spinal canal of man contain a fluid termed the:
A)
lymph
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B)
pyrenoid
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C)
volutin
done
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D)
cerebro-spinal fluid
done
clear
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question_answer 178) The method of the two strands of DNA separating like a zipper is termed:
A)
delamination
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B)
reproduction
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C)
duplication
done
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D)
replication
done
clear
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question_answer 179) Pasteurisation of milk means:
A)
removal of fat
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B)
addition of vitamin A and D
done
clear
C)
heating to 100°C for 30 minutes followed by quick cooling
done
clear
D)
heating upto 60°C for 30 minutes followed by quick cooling
done
clear
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question_answer 180) Lichen is a symbiotic association between:
A)
bryophyta and fungi
done
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B)
algae and fungi
done
clear
C)
angiosperm and fungi
done
clear
D)
pteridophyta and algae
done
clear
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question_answer 181) To fly off the handle:
A)
to be airborne
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B)
to lose ones temper
done
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C)
to take off
done
clear
D)
to dislocate
done
clear
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question_answer 182) To talk through ones hat:
A)
to talk ignorantly
done
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B)
to talk nonsense
done
clear
C)
to talk discourteously
done
clear
D)
to talk boastfully
done
clear
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question_answer 183) To take with a grain of salt:
A)
to take with some reservation
done
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B)
to take wholeheartedly
done
clear
C)
to take with total disbelief
done
clear
D)
to take seriously
done
clear
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question_answer 184) To meet ones Waterloo:
A)
to die an ignoble death
done
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B)
to meet ones final defeat
done
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C)
to meet a strong adversary
done
clear
D)
to die fighting
done
clear
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question_answer 185) Something up ones sleeve:
A)
something important
done
clear
B)
grand idea
done
clear
C)
a profitable plan
done
clear
D)
a secret plan
done
clear
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question_answer 186) To pull a long face:
A)
to look angry
done
clear
B)
to look cheerful
done
clear
C)
to look gloomy
done
clear
D)
to look indifferent
done
clear
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question_answer 187) To fish in troubled waters:
A)
to indulge in evil conspiracies
done
clear
B)
to make profit out of a disturbance
done
clear
C)
to catch fish in disturbed waters
done
clear
D)
to aggravate the situation
done
clear
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question_answer 188) To beat the air:
A)
to make efforts in vain
done
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B)
to move vigorously
done
clear
C)
to talk foolishly
done
clear
D)
to move sluggishly
done
clear
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question_answer 189) A snake in the grass:
A)
a secret or hidden enemy
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B)
a very ferocious snake
done
clear
C)
an unrecognizable danger
done
clear
D)
not a reliable person
done
clear
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question_answer 190) Bad blood:
A)
misunderstanding
done
clear
B)
distrust
done
clear
C)
angry feeling
done
clear
D)
jealousy
done
clear
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question_answer 191) It has been raining cats and dogs.
A)
raining musically
done
clear
B)
raining highly
done
clear
C)
raining cruelly
done
clear
D)
raining heavily
done
clear
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question_answer 192) He was cool as a cucumber.
A)
nervous
done
clear
B)
fainted
done
clear
C)
dead
done
clear
D)
cool and composed
done
clear
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question_answer 193) The long and the short of it is that they decided to marry.
A)
stoutly
done
clear
B)
staunchly
done
clear
C)
all that need be left unsaid is
done
clear
D)
all that can need and be said is
done
clear
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question_answer 194) He refused point-blank to compromise on principles.
A)
coldly
done
clear
B)
in a soft voice
done
clear
C)
flatly
done
clear
D)
hotly
done
clear
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question_answer 195) As our army attacked, the enemy retreated pell-mell.
A)
in a courageous manner
done
clear
B)
in a disorderly manner
done
clear
C)
in an orderly manner
done
clear
D)
in a heap
done
clear
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question_answer 196) Directions: In the following questions, a proverb/idiom/phrase is followed by four alternative choices. Select from amongst the given alternatives which best explains the meaning of the proverb/idiom/phrases. One swallow does not always make a summer:
A)
only one hot day does not mean that the summer has set in
done
clear
B)
one secret cannot save a persons life
done
clear
C)
one difficulty overcome does not mean that trouble is over
done
clear
D)
spring does not always follow a winter
done
clear
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question_answer 197) Directions: In the following questions, a proverb/idiom/phrase is followed by four alternative choices. Select from amongst the given alternatives which best explains the meaning of the proverb/idiom/phrases. Sent to Coventry:
A)
ostracized
done
clear
B)
welcomed
done
clear
C)
sent to public school
done
clear
D)
None of these
done
clear
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question_answer 198) Directions: In the following questions, a proverb/idiom/phrase is followed by four alternative choices. Select from amongst the given alternatives which best explains the meaning of the proverb/idiom/phrases. To have a second string to ones bow:
A)
to have second alternative in case the first one fails
done
clear
B)
so deceive someone
done
clear
C)
to keep ones powder dry
done
clear
D)
None of the above
done
clear
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question_answer 199) Directions: In the following questions, a proverb/idiom/phrase is followed by four alternative choices. Select from amongst the given alternatives which best explains the meaning of the proverb/idiom/phrases. To look a gift-horse in the mouth:
A)
to pick flaws in a gift or favour
done
clear
B)
to appreciate a gift or favour
done
clear
C)
to be indifferent
done
clear
D)
None of these
done
clear
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question_answer 200) Directions: In the following questions, a proverb/idiom/phrase is followed by four alternative choices. Select from amongst the given alternatives which best explains the meaning of the proverb/idiom/phrases. To make fish of one and flesh of another:
A)
to be extra smart
done
clear
B)
to be impartial
done
clear
C)
to become a non-vegetarian
done
clear
D)
to be partial
done
clear
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