question_answer 1) The height y and distance x along the horizontal plane of projectile on a certain planet (with no surrounding) are given by: \[y=(8t-5{{t}^{2}})\] metre and \[x=6\,t\] metre where r is in second. The velocity with which the projectile is projected is:
A)
8 m/s
done
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B)
6 m/s
done
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C)
10 m/s
done
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D)
data is not sufficient
done
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question_answer 2) A body of mass a, moving with a velocity b collides with a body of mass c, at rest and sticks to it. They move together with a velocity given by:
A)
\[\frac{ac}{a+b}\]
done
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B)
\[\frac{ab}{a+c}\]
done
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C)
\[\frac{a+b}{ac}\]
done
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D)
\[\frac{b+c}{ab}\]
done
clear
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question_answer 3) The refractive index of a material is given by the equation \[n=\frac{A+B}{{{\lambda }^{2}}}\], where A and B are constants. The dimensional formula for B is:
A)
\[[{{M}^{0}}{{L}^{2}}{{T}^{-1}}]\]
done
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B)
\[[{{M}^{0}}{{L}^{-2}}{{T}^{0}}]\]
done
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C)
\[[{{M}^{0}}{{L}^{2}}{{T}^{-2}}]\]
done
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D)
\[[{{M}^{0}}{{L}^{0}}{{T}^{0}}]\]
done
clear
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question_answer 4) A satellite is orbiting around the earth. By what percentage should we increase its velocity, so as to enable it escape away from the earth?
A)
41.4%
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B)
50%
done
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C)
82.8%
done
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D)
100%
done
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question_answer 5) At what temperature, the hydrogen molecule will escape from earths surface?
A)
101 K
done
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B)
102 K
done
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C)
103 K
done
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D)
104 K
done
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question_answer 6) If the earth is at one-fourth of its present. distance from the sun, the duration of the year will be :
A)
half the present year
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B)
one-eighth the present year
done
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C)
one-fourth the present year
done
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D)
one-sixth the present year
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question_answer 7) An observer moves towards a stationary source of sound with a velocity one-tenth the velocity of sound. The apparent increase in frequency is:
A)
zero
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B)
10%
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C)
5%
done
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D)
0.1%
done
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question_answer 8) When two conductors of charges and potentials \[{{C}_{1}},\,\,{{V}_{1}}\] and \[{{C}_{2}},\,\,{{V}_{2}}\] respectively are joined, the common potential will be :
A)
\[\frac{{{C}_{1}}{{V}_{1}}+{{C}_{2}}{{V}_{2}}}{{{V}_{1}}+{{V}_{2}}}\]
done
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B)
\[\frac{{{C}_{1}}V_{1}^{2}+{{C}_{2}}V_{2}^{2}}{V_{1}^{2}+V_{2}^{2}}\]
done
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C)
\[{{C}_{1}}+{{C}_{2}}\]
done
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D)
\[\frac{{{C}_{1}}{{V}_{1}}+{{C}_{2}}{{V}_{2}}}{{{C}_{1}}+{{C}_{2}}}\]
done
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question_answer 9) A weightless thread can bear tension upto 3.7 kg-wt. A stone of mass 500 g is tied to it and revolved in a circular path of radius 4 m in a vertical plane. If \[g=10\,\,m{{s}^{-2}}\], then the maximum angular velocity of the stone will be:
A)
4 rad/s
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B)
16 rad/s
done
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C)
V21 rad/s
done
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D)
2 rad/s
done
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question_answer 10) The effective length of a magnet is 31.4 cm and its pole strength is 0.5 Am. If it is bent in the form of semicircle, what will be its magnetic moment then?
A)
0.12 \[A{{m}^{2}}\]
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B)
0.1 \[A{{m}^{2}}\]
done
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C)
0.05 \[A{{m}^{2}}\]
done
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D)
0.01 \[A{{m}^{2}}\]
done
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question_answer 11) Four molecules of a gas have speeds 1, 2, 3 and\[4\,\,km{{s}^{-1}}\]. The value of rms speed of the gas molecules is:
A)
\[\frac{1}{2}\sqrt{15}\,km{{s}^{-1}}\]
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B)
\[\frac{1}{2}\sqrt{10}\,km{{s}^{-1}}\]
done
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C)
\[2.5\,\,km{{s}^{-1}}\]
done
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D)
\[\sqrt{\frac{15}{2}}\,\,km{{s}^{-1}}\]
done
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question_answer 12) If there is change of angular momentum from to 5 J in 5 s, then the torque is :
A)
\[\frac{3\,J}{5}\]
done
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B)
\[\frac{4\,J}{5}\]
done
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C)
\[\frac{5\,J}{4}\]
done
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D)
none of these
done
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question_answer 13)
Two springs having force constants k each are arranged in parallel and in series. A mass M is attached to two arrangements separately. If time period in first case is \[{{T}_{1}}\] and in second case is \[{{T}_{2}}\], then ratio \[\frac{{{T}_{1}}}{{{T}_{2}}}\] is :
A)
1.5
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B)
3.2
done
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C)
0.5
done
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D)
2.1
done
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question_answer 14) If the work done in blowing a bubble of volume V is W, then the work done in blowing a soap bubble of volume 2 V will be :
A)
W
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B)
2W
done
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C)
V21V
done
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D)
\[{{4}^{1/3}}\] W
done
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question_answer 15)
An ideal monoatomic gas is taken round the cycle ABCDA as shown in figure. The work done during the cycle is:
A)
PV
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B)
2PV
done
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C)
\[\frac{PV}{2}\]
done
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D)
zero
done
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question_answer 16) A proton of energy 2 MeV is moving in a circular path in a magnetic field. What should be the energy of a deuteron, so that it also describes circular path of radius equal to that of the proton?
A)
1 MeV
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B)
2 MeV
done
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C)
4 MeV
done
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D)
0.5 MeV
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question_answer 17) A gas at NTP is suddenly compressed to one-fourth of its original volume. If \[\gamma \] is supposed to be 3/2, then the final pressure is :
A)
4 arm
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B)
\[\frac{3}{2}\]arm
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C)
8 aim
done
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D)
\[\frac{1}{4}\]arm
done
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question_answer 18) In a series combination \[R=300\,\,\Omega \], L = 0.9 H, \[C=2.0\,\,\mu F,\,\,\omega =1000\] rad/s, the impedance of the circuit is :
A)
\[1300\,\,\Omega \]
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B)
\[900\,\,\Omega \]
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C)
\[500\,\,\Omega \]
done
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D)
\[400\,\,\Omega \]
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question_answer 19) n identical spherical drops each of radius r are charged to same potential V. They combine to form a bigger drop. The potential of the big drop will be :
A)
\[{{n}^{1/3}}V\]
done
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B)
\[{{n}^{2/3}}V\]
done
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C)
V
done
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D)
nV
done
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question_answer 20) The wavelength of maximum energy, released during an atomic explosion was \[2.9\times {{10}^{-10}}m\]. Given that the Wiens constant is \[2.93\times {{10}^{-10}}m\], the maximum temperature attained must be of the order of:
A)
\[{{10}^{-7}}K\]
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B)
\[{{10}^{7}}K\]
done
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C)
\[{{10}^{-3}}K\]
done
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D)
\[5.86\times {{10}^{-7}}K\]
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question_answer 21) The pressure and density of a diatomic gas \[\left( \gamma =\frac{7}{5} \right)\] change adiabatically from (P, d) to (P, d). If \[\frac{d}{d}=32\], then \[\frac{p}{p}\] should be :
A)
\[\frac{1}{128}\]
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B)
32
done
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C)
128
done
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D)
none of these
done
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question_answer 22) A piece of wax weighs 18.03 g in air. A piece of metal is found to weigh 17.03 g in water. It is tied to the wax and both together weigh 15.23 g in water. Then, the specific gravity of wax is :
A)
\[\frac{18.03}{17.03}\]
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B)
\[\frac{17.03}{18.03}\]
done
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C)
\[\frac{18.03}{19.83}\]
done
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D)
\[\frac{15.03}{17.03}\]
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question_answer 23) If a mica sheet of thickness t and refractive index u is placed in the path of one of interfering beams in a double slit experiment, then displacement of fringes will be :
A)
\[\frac{D}{d}\mu t\]
done
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B)
\[\frac{D}{d}(\mu -1)\,t\]
done
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C)
\[\frac{D}{d}(\mu +1)\,t\]
done
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D)
\[\frac{D}{d}({{\mu }^{2}}-1)\,t\]
done
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question_answer 24) A ray of light propagates from glass (refractive index \[=\frac{3}{2}\]) to water (refractive index \[=\frac{4}{3}\]). The value of the critical angle is :
A)
\[{{\sin }^{-1}}\left( \frac{1}{2} \right)\]
done
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B)
\[{{\sin }^{-1}}\left( \sqrt{\frac{9}{8}} \right)\]
done
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C)
\[{{\sin }^{-1}}\left( \frac{8}{9} \right)\]
done
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D)
\[{{\sin }^{-1}}\left( \frac{5}{7} \right)\]
done
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question_answer 25) A ray of light suffers minimum deviation when incident at \[{{60}^{o}}\] prism of refractive index \[\sqrt{2}\]. The angle of incidence is :
A)
\[{{\sin }^{-1}}(0.8)\]
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B)
\[{{60}^{o}}\]
done
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C)
\[{{45}^{o}}\]
done
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D)
\[{{30}^{o}}\]
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question_answer 26)
Each of the resistance in the network shown in figure is equal to R. Find the equivalent resistance between two terminals A and B.
A)
R
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B)
SR
done
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C)
2R
done
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D)
-JR
done
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question_answer 27) A gas in an air tight container is heated from \[{{25}^{o}}C\] to \[{{90}^{o}}C\]. The density of gas will:
A)
increase slightly
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B)
remain the same
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C)
increase considerably
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D)
decrease slightly
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question_answer 28) If 2% of the main current is to be passed through the galvanometer of resistance G, the resistance of the shunt required is :
A)
\[\frac{G}{49}\]
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B)
\[\frac{G}{50}\]
done
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C)
49 G
done
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D)
50 G
done
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question_answer 29) The current in self-inductance L = 40 mH is increased uniformly from 1 A to 11 A in 4 milliseconds. The induced emf produced in L during this process will be :
A)
100 V
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B)
0.2V
done
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C)
440V
done
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D)
40V
done
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question_answer 30) \[{{H}^{+}},H{{e}^{2+}}\] and \[{{O}^{2-}}\] all having the same kinetic energy pass through a region in which there is a uniform magnetic field perpendicular to their velocity. The masses of \[{{H}^{+}},H{{e}^{2+}}\] and \[{{O}^{2-}}\] are 1 amu, 4 amu and 16 amu, respectively. Then:
A)
\[{{H}^{+}}\] will be deflected most
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B)
\[{{O}^{2-}}\]will be deflected most
done
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C)
\[H{{e}^{2+}}\] and \[{{O}^{2-}}\] will be deflected most
done
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D)
all will be deflected most
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question_answer 31) The current gain of a transistor in common emitter mode is 49. The change in collector current and emitter current corresponding to the change in base current by 5.0 \[\mu A\] are :
A)
\[\Delta {{i}_{C}}=245\,\mu A,\,\Delta {{i}_{E}}=250\,\mu A\]
done
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B)
\[\Delta {{i}_{C}}=252\,\mu A,\,\Delta {{i}_{E}}=145\,\mu A\]
done
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C)
\[\Delta {{i}_{C}}=125\,\mu A,\,\Delta {{i}_{E}}=250\,\mu A\]
done
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D)
\[\Delta {{i}_{C}}=252\,\mu A,\,\Delta {{i}_{E}}=230\,\mu A\]
done
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question_answer 32) In hydrogen atom when an electron jumps from second to first orbit, the wavelength of line emitted is :
A)
0.563 \[\overset{o}{\mathop{A}}\,\]
done
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B)
4861 \[\overset{o}{\mathop{A}}\,\]
done
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C)
4102 \[\overset{o}{\mathop{A}}\,\]
done
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D)
1213 \[\overset{o}{\mathop{A}}\,\]
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question_answer 33) How does the magnetic susceptibility y, of a paramagnetic material change with absolute temperature T?
A)
\[\chi \propto T\]
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B)
\[\chi \propto {{T}^{-1}}\]
done
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C)
\[\chi =\]constant
done
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D)
\[\chi ={{e}^{T}}\]
done
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question_answer 34) Two identical heaters of 220 V, 1000 W are placed in parallel with each other across 220 V line, then the combined power is :
A)
1000 W
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B)
2000 W
done
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C)
500 W
done
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D)
4000 W
done
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question_answer 35) A bar of magnetic moment M is cut into two parts of equal length. The magnetic moment of either part is :
A)
M
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B)
2M
done
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C)
\[\frac{M}{2}\]
done
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D)
zero
done
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question_answer 36) A rain drop of radius 0.3 mm has a terminal velocity of 1 m/s and the viscosity of 1 m/s and the viscosity of air is \[18\times {{10}^{-5}}\] poise. The viscous force on the drop is :
A)
\[16.95\times {{10}^{-9}}N\]
done
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B)
\[1.695\times {{10}^{-9}}N\]
done
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C)
\[10.17\times {{10}^{-9}}N\]
done
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D)
\[101.74\times {{10}^{-9}}N\]
done
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question_answer 37) If magnetic material-moves from stronger to weaker parts of magnetic field, then it is known as :
A)
anti-ferromagnetic
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B)
ferromagnetic
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C)
diamagnetic
done
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D)
paramagnetic
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question_answer 38) A charge q is placed at the centre of line joining two equal charges Q. The system of three charges will be in equilibrium, if q is equal to:
A)
\[-\frac{Q}{2}\]
done
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B)
\[-\frac{Q}{4}\]
done
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C)
\[+\frac{Q}{4}\]
done
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D)
\[+\frac{Q}{2}\]
done
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question_answer 39) The temperature of cold, hot junction of a thermocouple are \[{{0}^{o}}C\] and \[{{T}^{o}}C\] respectively. The thermo-emf produced is \[E=AT-\frac{1}{2}B{{T}^{2}}\]. If A = 16, B = 0.08, the temperature of inversion will be:
A)
\[{{100}^{o}}C\]
done
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B)
\[{{300}^{o}}C\]
done
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C)
\[{{400}^{o}}C\]
done
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D)
\[{{500}^{o}}C\]
done
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question_answer 40)
Two light springs of force constants \[{{k}_{1}}\] and \[{{k}_{2}}\]and a block of mass m are in one line AB on a smooth horizontal table, such that one end of each spring is fixed to rigid support and other end is attached to block of mass m kg as shown in figure. The frequency of vibration is :
A)
\[n=\frac{1}{2\pi }\sqrt{\frac{{{k}_{1}}+{{k}_{2}}}{m}}\]
done
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B)
\[n=\frac{1}{2\pi }\sqrt{\frac{{{k}_{1}}\,{{k}_{2}}}{m}}\]
done
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C)
\[n=\frac{1}{2\pi }\sqrt{\frac{{{k}_{1}}-{{k}_{2}}}{m}}\]
done
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D)
none of these
done
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question_answer 41) Pressure inside two soap bubbles are 1.01 and 1.02 atm. Ratio between their volumes is :
A)
102 : 101
done
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B)
\[{{(102)}^{3}}\text{:(}103{{)}^{3}}\]
done
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C)
8 : 1
done
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D)
2 : 1
done
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question_answer 42)
Two dielectrics of dielectric constants \[{{K}_{1}}\] and \[{{K}_{2}}\] are filled in gap of parallel plate capacitor as shown in figure The capacitance of capacitor will be:
A)
\[\frac{{{\varepsilon }_{0}}A\,({{K}_{1}}+{{K}_{2}})}{2\,d}\]
done
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B)
\[\frac{{{\varepsilon }_{0}}A}{2\,d}\left( \frac{({{K}_{1}}+{{K}_{2}})}{{{K}_{1}}{{K}_{2}}} \right)\]
done
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C)
\[\frac{{{\varepsilon }_{0}}}{d}\left( \frac{({{K}_{1}}{{K}_{2}}}{{{K}_{1}}+{{K}_{2}})} \right)\]
done
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D)
\[\frac{{{\varepsilon }_{0}}A}{d}\left( \frac{({{K}_{1}}+{{K}_{2}})}{{{K}_{1}}{{K}_{2}}} \right)\]
done
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question_answer 43) For a series LCR circuit, the phase difference between current and voltage at the condition of resonance will be :
A)
\[\frac{\pi }{2}\]
done
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B)
\[\frac{\pi }{4}\]
done
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C)
zero
done
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D)
nothing can be said
done
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question_answer 44) A metallic rod of length \[l\] is placed normal to the magnetic field B and revolved in a circular path about one of the ends with angular frequency co. The potential difference across the ends will be ;
A)
\[\frac{1}{2}{{B}^{2}}l\omega \]
done
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B)
\[\frac{1}{2}B\omega {{l}^{2}}\]
done
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C)
\[\frac{1}{8}B\omega {{l}^{3}}\]
done
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D)
\[B\omega {{l}^{2}}\]
done
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question_answer 45) A magnetic needle suspended in a vertical plane at \[{{30}^{o}}\] from the magnetic meridian makes an angle \[{{45}^{o}}\] with the horizontal. What will be the true angle of dip?
A)
\[{{\tan }^{-1}}\left( \frac{\sqrt{3}}{2} \right)\]
done
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B)
\[{{\tan }^{-1}}(\sqrt{3})\]
done
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C)
\[{{45}^{o}}\]
done
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D)
\[{{30}^{o}}\]
done
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question_answer 46) A force F is given by \[F=at+b{{t}^{2}}\], where t is time. What are the dimensions of a and b respectively?
A)
\[[ML{{T}^{-1}}]\] and \[[ML{{T}^{-4}}]\]
done
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B)
\[[ML{{T}^{-3}}]\] and \[[ML{{T}^{-4}}]\]
done
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C)
\[[ML{{T}^{-4}}]\] and \[[ML{{T}^{2}}]\]
done
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D)
\[[M{{L}^{2}}{{T}^{3}}]\] and \[[M{{L}^{-1}}{{T}^{2}}]\]
done
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question_answer 47) In a triode valve, the plate resistance is \[10000\,\,\Omega \] and the anode load resistance is\[30000\,\,\Omega \]. If the amplification factor is 36, then the voltage gain is :
A)
9
done
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B)
27
done
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C)
36
done
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D)
108
done
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question_answer 48) \[{{g}_{e}}\] and \[{{g}_{p}}\] denote the acceleration due to gravity on the surface of the earth and another planet whose mass and radius are twice to that of the earth, then :
A)
\[{{g}_{p}}=\frac{{{g}_{e}}}{2}\]
done
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B)
\[{{g}_{p}}={{g}_{e}}\]
done
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C)
\[{{g}_{p}}=2{{g}_{e}}\]
done
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D)
\[{{g}_{p}}=\frac{{{g}_{e}}}{\sqrt{2}}\]
done
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question_answer 49) Of the following which relation is true :
A)
\[\beta >\alpha \]
done
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B)
\[\alpha >\beta \]
done
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C)
\[\alpha \beta =1\]
done
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D)
\[\alpha =\beta \]
done
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question_answer 50) A soap bubble in vacuum has a radius 3 cm and another soap bubble in vacuum has radius 4 cm. If two bubbles coalesce under isothermal condition, then the radius of the new bubble will be :
A)
7 cm
done
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B)
5 cm
done
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C)
4.5 cm
done
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D)
2.3 cm
done
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question_answer 51) Out of Cu, Al Fe and Zn, metal which can displace all others from their salt solution is:
A)
Al
done
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B)
Cu
done
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C)
Zn
done
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D)
Fe
done
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question_answer 52) In which of the following reactions, hydrogen is acting as an oxidising agent?
A)
With \[Li\] to form \[LiH\]
done
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B)
With \[{{I}_{2}}\] to give HI
done
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C)
With S to give \[{{H}_{2}}S\]
done
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D)
None of the above
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question_answer 53) Our cells get energy by the conversion of:
A)
ATP \[\xrightarrow{{}}\] Adenine
done
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B)
ATP \[\xrightarrow{{}}\] ADP
done
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C)
ADP \[\xrightarrow{{}}\] AMP
done
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D)
CDP \[\xrightarrow{{}}\] CTP
done
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question_answer 54) The number of optically active isomers of tartaric acid are:
A)
1
done
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B)
3
done
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C)
4
done
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D)
2
done
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question_answer 55) The hardness of water is estimated by :
A)
conductivity method
done
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B)
titrimetric method
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C)
EDTA method
done
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D)
distillation method
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question_answer 56) \[N{{a}_{2}}O,MgO,\,\,A{{l}_{2}}{{O}_{3}}\] and \[Si{{O}_{2}}\] have heat of formation equal to -416, -602, -1676 and \[-911\,\,kJ\,\,mo{{l}^{-1}}\] respectively. The most stable oxide is :
A)
\[N{{a}_{2}}O\]
done
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B)
\[MgO\]
done
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C)
\[A{{l}_{2}}{{O}_{3}}\]
done
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D)
\[Si{{O}_{2}}\]
done
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question_answer 57) A photon having a wavelength of \[845\text{ }\overset{o}{\mathop{A}}\,\], causes the ionisation of N atom. What is the ionization energy of N?
A)
1.4 kJ
done
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B)
\[1.4\times {{10}^{4}}\,kJ\]
done
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C)
\[1.4\times {{10}^{2}}\,kJ\]
done
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D)
\[1.4\times {{10}^{3}}\,kJ\]
done
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question_answer 58) The electronic theory of bonding was proposed by:
A)
Pauling
done
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B)
Lewis
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C)
Bronsted
done
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D)
Mullikan
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question_answer 59) An azeotropic mixture of two liquids has boiling point lower than either of them, when it:
A)
shows a negative deviation from Raoults law
done
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B)
shows no deviation from Raoults law
done
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C)
shows positive deviation from Raoults law
done
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D)
is saturated
done
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question_answer 60) Troutons rule gives the relation between:
A)
\[{{T}_{b}}\] and T,
done
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B)
\[{{T}_{b}}\] and critical pressure
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C)
enthalpy of vaporisation and boiling point
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D)
normal boiling point and boiling point
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question_answer 61)
The product \[X\] in the following reaction is:
A)
\[C{{H}_{2}}Br-CH=C{{H}_{2}}\]
done
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B)
\[C{{H}_{2}}-\overset{\begin{smallmatrix} Br \\ | \end{smallmatrix}}{\mathop{C}}\,=C{{H}_{2}}\]
done
clear
C)
\[C{{H}_{3}}CH=CHBr\]
done
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D)
none of the above
done
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question_answer 62) What are the products in the following reaction? \[{{C}_{2}}{{H}_{5}}O{{C}_{2}}{{H}_{5}}\xrightarrow[cold]{HI}X+Y\]
A)
\[C{{H}_{3}}COOH,\,\,C{{H}_{2}}=C{{H}_{2}}\]
done
clear
B)
\[C{{H}_{3}}CHO,C{{H}_{2}}=C{{H}_{2}}\]
done
clear
C)
\[{{C}_{2}}{{H}_{5}}OH,{{C}_{2}}{{H}_{5}}I\]
done
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D)
None of the above
done
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View Answer play_arrow
question_answer 63) Which of the following reagent can distinguish between butyne-1 and butyne-2?
A)
Bromine water
done
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B)
Aqueous \[NaOH\]
done
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C)
Fehlings solution
done
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D)
Ammoniacal \[AgN{{O}_{3}}\]
done
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View Answer play_arrow
question_answer 64) Which of the following will have maximum pH?
A)
\[\frac{M}{10}HCl\]
done
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B)
\[\frac{M}{100}HCl\]
done
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C)
\[\frac{M}{10}NaOH\]
done
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D)
\[\frac{M}{100}NaOH\]
done
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View Answer play_arrow
question_answer 65) What is \[\Delta E\] for system that does 500 cal of work on surrounding and 300 cal of heat is absorbed by the system?
A)
-200 cal
done
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B)
-300 cal
done
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C)
+200 cal
done
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D)
+300 cal
done
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question_answer 66) The rate of a chemical reaction :
A)
increase as the reaction proceeds
done
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B)
decrease as the reaction proceeds
done
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C)
may increase or decrease during reaction
done
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D)
remain constant as the reaction
done
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View Answer play_arrow
question_answer 67) A carbonate ore is :
A)
carnallite
done
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B)
limonite
done
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C)
siderite
done
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D)
horn silver
done
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question_answer 68) Cadmium in a nuclear reactor acts as :
A)
nuclear fuel
done
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B)
neutron absorber
done
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C)
a moderator
done
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D)
neutron liberator to start the chain
done
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View Answer play_arrow
question_answer 69) Cement does not contain :
A)
calcium
done
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B)
aluminium
done
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C)
sulphur
done
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D)
iron
done
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question_answer 70) The simplest way, to check whether a system is a colloid, is by :
A)
Tyndall effect
done
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B)
Brownian movement
done
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C)
Electrodialysis
done
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D)
finding out particle size
done
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question_answer 71)
What is Z in the following reaction?
A)
Benzoic acid
done
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B)
Cyanobenzoic acid
done
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C)
Benzamide
done
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D)
Aniline
done
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View Answer play_arrow
question_answer 72) The reaction, \[RCOOH\xrightarrow{Na{{N}_{3}}/conc.\,\,{{H}_{2}}S{{O}_{4}}}\] \[RN{{H}_{2}}+{{N}_{2}}+C{{O}_{2}}\] is known as :
A)
Curtius reaction
done
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B)
Lossen reaction
done
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C)
Schmidt reaction
done
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D)
Hofmann reaction
done
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View Answer play_arrow
question_answer 73) What is the product in the reaction? \[C{{H}_{3}}MgBr\xrightarrow[(ii){{H}_{2}}O]{(i)C{{O}_{2}}}X\]
A)
Acetaldehyde
done
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B)
Acetic acid
done
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C)
Formic acid
done
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D)
Formaldehyde
done
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View Answer play_arrow
question_answer 74) What is the value of \[{{E}_{cell}}\]? \[Cr|C{{r}^{3+}}(0.1M)|\,\,|F{{e}^{2+}}\,(0.01M)|Fe\] Given, \[E_{C{{r}^{3+}}/Cr}^{o}=-0.74\,V\]and \[E_{F{{e}^{2+}}/Fe}^{o}=-0.44\,V\]
A)
+0.29 41V
done
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B)
+ 0.5212 V
done
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C)
+ 0.1308V
done
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D)
-0.2606 V
done
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View Answer play_arrow
question_answer 75) Elevation in boiling point was \[{{0.52}^{o}}C\] when 6g of a compound was dissolved in 100 g of water. Molecular weight of X is (\[{{K}_{b}}\] of water is \[{{5.2}^{o}}C\]per 100 g of water):
A)
120
done
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B)
60
done
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C)
600
done
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D)
180
done
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question_answer 76) The solubility of \[PbC{{l}_{2}}\] is :
A)
\[\sqrt{{{K}_{sp}}}\]
done
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B)
\[{{({{K}_{sp}})}^{1/3}}\]
done
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C)
\[{{({{K}_{sp}}/4)}^{1/3}}\]
done
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D)
\[{{(8{{K}_{sp}})}^{1/2}}\]
done
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View Answer play_arrow
question_answer 77) Equilibrium constant K , for the reaction, \[2HI(g){{H}_{2}}(g)+{{I}_{2}}(g)\]at room temperature is 2.85 and that at 698 K is \[1.4\times {{10}^{-2}}\]. This implies that the forward reaction is:
A)
exothermic
done
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B)
endothermic
done
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C)
exergonic
done
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D)
unpredictable
done
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View Answer play_arrow
question_answer 78) Which of the following represents hexadentate ligand?
A)
2,2-bipyridyl
done
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B)
DMG
done
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C)
Ethylenediamine
done
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D)
None of these
done
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question_answer 79) The amount of substance that gives \[3.7\times {{10}^{7}}\]dps, is :
A)
one becquerel
done
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B)
one curie
done
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C)
one millicurie
done
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D)
one Rutherford
done
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View Answer play_arrow
question_answer 80) The reaction, \[A{{g}^{2+}}(aq)+Ag(s)2A{{g}^{+}}(aq)\] is an example of:
A)
reduction
done
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B)
oxidation
done
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C)
comproportionation
done
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D)
disproportionation
done
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View Answer play_arrow
question_answer 81) DDT is obtained by the reaction of chlorobenzene with:
A)
chloral
done
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B)
chloroform
done
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C)
dichloromethane
done
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D)
acetaldehyde
done
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View Answer play_arrow
question_answer 82) Which of the following is false?
A)
Glycerol has strong hydrogen bonding
done
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B)
Glycol is a poisonous alcohols
done
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C)
Waxes are esters of higher alcohols with higher acids
done
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D)
Alkyl halides have higher b.p. than corresponding alcohols
done
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question_answer 83) Which of the following oxides is most acidic?
A)
\[A{{l}_{2}}{{O}_{3}}\]
done
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B)
\[Si{{O}_{3}}\]
done
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C)
\[{{P}_{2}}{{O}_{5}}\]
done
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D)
\[MgO\]
done
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View Answer play_arrow
question_answer 84) Glaubers salt is :
A)
\[N{{a}_{2}}C{{O}_{3}}\,.\,\,10{{H}_{2}}O\]
done
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B)
\[N{{a}_{2}}S{{O}_{4}}\,.\,\,10{{H}_{2}}O\]
done
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C)
\[MgS{{O}_{4}}\,.\,\,7{{H}_{2}}O\]
done
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D)
\[CaS{{O}_{4}}\,.\,\,5{{H}_{2}}O\]
done
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View Answer play_arrow
question_answer 85) Enthalpy change when 1g water is frozen at\[{{0}^{o}}C\] is : (\[\Delta {{H}_{fus}}=1.435\] kcal \[mo{{l}^{-1}}\])
A)
0.0797 kcal
done
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B)
-0.0797 kcal
done
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C)
1.435 kcal
done
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D)
-1.435 kcal
done
clear
View Answer play_arrow
question_answer 86) Which of the following statement is true?
A)
Some complex metal oxides behave as superconductor
done
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B)
Zinc oxide can act as superconductor
done
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C)
An impurity of tetravalent germanium in trivalent gallium creates electron deficiency
done
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D)
A Frenkel defect is formed when an ion is displaced from its lattice site to an interstitial site
done
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View Answer play_arrow
question_answer 87) The correct set of four quantum number for the valence electron of rubidium (Z = 37) is :
A)
\[n=5,\,l=0,\,\,m=0,\,\,s=+1/2\]
done
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B)
\[n=5,\,l=1,\,\,m=1,\,\,s=+1/2\]
done
clear
C)
\[n=5,\,l=1,\,\,m=1,\,\,s=+1/2\]
done
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D)
\[n=6,\,l=0,\,\,m=0,\,\,s=+1/2\]
done
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View Answer play_arrow
question_answer 88) \[s{{p}^{3}}\]-hybridisation is not found in :
A)
\[{{H}_{2}}O\]
done
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B)
\[C{{H}_{4}}\]
done
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C)
\[BC{{l}_{3}}\]
done
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D)
\[N{{H}_{3}}\]
done
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View Answer play_arrow
question_answer 89) Chalcopyrites is an ore of:
A)
gallium
done
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B)
copper
done
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C)
calcium
done
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D)
magnesium
done
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View Answer play_arrow
question_answer 90) Which of the following statement is correct?
A)
Acidify increases with increase in carbon atoms in carboxylic acids
done
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B)
Solubility of carboxylic acids increases with increase in carbon atoms
done
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C)
foiling points of acids are higher than corresponding alcohols
done
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D)
None of the above
done
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View Answer play_arrow
question_answer 91) Which temperature is most suitable for fermentation?
A)
273 K
done
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B)
298 K
done
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C)
350 K
done
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D)
330 K
done
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View Answer play_arrow
question_answer 92) In the reaction, \[HCHO+N{{H}_{3}}\xrightarrow{{}}X,\,\,X\]is :
A)
meta-formaldehyde
done
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B)
para-formaldehyde
done
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C)
urotropine
done
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D)
none of the above
done
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View Answer play_arrow
question_answer 93) Which of the following have highest melting points?
A)
p -block elements
done
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B)
s-block elements
done
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C)
d-block elements
done
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D)
None of the above
done
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View Answer play_arrow
question_answer 94) An acid has pH = 5 and its concentration is 1M. What is the value of \[{{K}_{a}}\] for the acid?
A)
\[{{10}^{-7}}\]
done
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B)
\[{{10}^{-5}}\]
done
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C)
\[{{10}^{-10}}\]
done
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D)
\[{{10}^{-8}}\]
done
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View Answer play_arrow
question_answer 95) Fatty acid is to fat as glucose is to :
A)
cellulose
done
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B)
glycogen
done
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C)
starch
done
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D)
all of these
done
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View Answer play_arrow
question_answer 96) In aerosol, the dispersion medium is :
A)
solid
done
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B)
liquid
done
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C)
gas
done
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D)
any of these
done
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View Answer play_arrow
question_answer 97) Peptisation denotes :
A)
digestion of food
done
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B)
hydrolysis of protein
done
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C)
breaking and dispersion into colloidal state
done
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D)
precipitation of solid from colloidal state
done
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question_answer 98) Buna-N is a polymer of:
A)
butadiene and isoprene
done
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B)
butadiene and acrylonitrile
done
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C)
isoprene and ethylene diamine
done
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D)
isoprene and butyl diamine
done
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View Answer play_arrow
question_answer 99) Which of the following is an ingrain dye?
A)
Congo-red
done
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B)
Aniline black
done
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C)
Alizarin
done
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D)
Indigo
done
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question_answer 100) Which of the following give an explosive, RDX, on nitration?
A)
Toluene
done
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B)
Benzene
done
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C)
Guanidine
done
clear
D)
Urotropine
done
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View Answer play_arrow
question_answer 101) Hepatitis-B is also called :
A)
epidemic jaundice
done
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B)
serum jaundice
done
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C)
catarrhal jaundice
done
clear
D)
none of the above
done
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View Answer play_arrow
question_answer 102) In mammals, carbohydrates are stored as :
A)
glycogen in liver and spleen
done
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B)
lactic acid in muscles
done
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C)
glucose in liver
done
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D)
glycogen in liver and muscles
done
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View Answer play_arrow
question_answer 103) Raffinose is:
A)
monosaccharides
done
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B)
disaccharides
done
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C)
trisaccharides
done
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D)
polysaccharides
done
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View Answer play_arrow
question_answer 104) During conversion of pyruvic acid into acetyl Co-A, pyruvic acid is :
A)
oxidised
done
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B)
reduced
done
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C)
isomerised
done
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D)
condensed
done
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View Answer play_arrow
question_answer 105) A cell coded protein formed in response to infection with most animal viruses is :
A)
histone
done
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B)
antigen
done
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C)
antibody
done
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D)
interferon
done
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View Answer play_arrow
question_answer 106) In Krebs cycle :
A)
ADP is converted into ATP
done
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B)
pyruvic acid is converted into \[C{{O}_{2}}\] and \[{{H}_{2}}O\]
done
clear
C)
glucose is converted into \[C{{O}_{2}}\]
done
clear
D)
pyruvic acid is converted into ATP
done
clear
View Answer play_arrow
question_answer 107) Active transport:
A)
releases energy
done
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B)
requires energy
done
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C)
produces ATP
done
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D)
produces a toxic substance
done
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View Answer play_arrow
question_answer 108) The first carbon-dioxide acceptor in \[{{C}_{4}}\] plants is :
A)
phosphoenol pyruvate
done
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B)
oxalo acetic acid
done
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C)
phosphoglyceric acid
done
clear
D)
ribulose 1, 5- diphosphate
done
clear
View Answer play_arrow
question_answer 109) Fatty liver syndrome is due to excessive intake of:
A)
morphine
done
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B)
alcohol
done
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C)
tobacco
done
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D)
both [b] and [c]
done
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View Answer play_arrow
question_answer 110) The \[{{C}_{4}}\] plants are different from the ?3 plants with reference to the :
A)
types of pigments involved in photosynthesis
done
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B)
the number of NADPH that are consumed in preparing sugar
done
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C)
types of end product of photosynthesis
done
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D)
the substance that accepts \[C{{O}_{2}}\] in carbon assimilation and first stable product
done
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question_answer 111) Haversian canal is found in the bone of :
A)
mammals
done
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B)
reptiles
done
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C)
aves
done
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D)
pices
done
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View Answer play_arrow
question_answer 112) The gestation period of elephant is about:
A)
11 months
done
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B)
15 months
done
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C)
22 months
done
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D)
32 months
done
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View Answer play_arrow
question_answer 113) The banding pattern of chromosomes 3 and 6 of human beings and chimpanzee shows that they had :
A)
common origin
done
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B)
different origin
done
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C)
same number of chromosomes
done
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D)
similar blood groups
done
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View Answer play_arrow
question_answer 114) Most radiosensitive tissue of body is :
A)
bone-marrow
done
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B)
platelet
done
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C)
nervous tissue
done
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D)
lymphocyte
done
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question_answer 115) Acid rain are produced by :
A)
excess release of carbon-monoxide by incomplete combustion
done
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B)
excess formation of \[C{{O}_{2}}\] by combustion and animal respiration
done
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C)
excess production of \[N{{H}_{3}}\] by industry and coal gas
done
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D)
excess \[N{{O}_{2}}\] and \[S{{O}_{2}}\] from burning fossil fuels
done
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View Answer play_arrow
question_answer 116) Spermatogenesis is influenced by :
A)
Progesterone
done
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B)
FSH
done
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C)
STH
done
clear
D)
LTH
done
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question_answer 117) DNA acts as a template for synthesis of:
A)
RNA
done
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B)
DNA
done
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C)
both [a] and [b]
done
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D)
protein
done
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View Answer play_arrow
question_answer 118) t-RNA attaches, amino acid at its :
A)
3end
done
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B)
5end
done
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C)
anticodon
done
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D)
loop
done
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View Answer play_arrow
question_answer 119) DPT provide immunity against:
A)
diphtheria
done
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B)
whooping cough
done
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C)
tetanus
done
clear
D)
all of these
done
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View Answer play_arrow
question_answer 120) External water is not required for fertilization of:
A)
bryophytes
done
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B)
pteridophytes
done
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C)
thallophytes
done
clear
D)
spermatophytes
done
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View Answer play_arrow
question_answer 121) In orthotropous ovule, the micropyle and chalaza are :
A)
oblique to funiculus
done
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B)
parallel to funiculus
done
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C)
at right angle to funiculus
done
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D)
in straight line with funiculus
done
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View Answer play_arrow
question_answer 122) In India AIDS was reported in :
A)
1932
done
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B)
1986
done
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C)
1990
done
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D)
1992
done
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question_answer 123) A colourblind person can not distinguish :
A)
green and blue
done
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B)
red and green
done
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C)
yellow and white
done
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D)
black and yellow
done
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question_answer 124) On which day, we celebrate malarial day?
A)
5th June
done
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B)
15th August
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C)
20th August
done
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D)
1st December
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question_answer 125) Proteinaceous nature of enzyme was suggested by:
A)
Sumner
done
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B)
Kuhne
done
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C)
E. Buchner
done
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D)
Northrop
done
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question_answer 126) Gambusia fish is :
A)
cat fish
done
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B)
sucker fish
done
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C)
mosquito fish
done
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D)
flat fish
done
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question_answer 127) Brain depends on blood for the supply of:
A)
oxygen and glucose
done
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B)
oxygen and electrolytes
done
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C)
oxygen and ATP
done
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D)
ATP and glucose
done
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question_answer 128) Plague is caused by :
A)
Diplococcus pneumoniae
done
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B)
Yersinia pestis
done
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C)
Corynebacterium diptheriae
done
clear
D)
All of the above
done
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View Answer play_arrow
question_answer 129) In Musa, inflorescence is:
A)
capitulum
done
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B)
corymb
done
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C)
spadix
done
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D)
polychasial cyme
done
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View Answer play_arrow
question_answer 130) Sexual phase of Plasmodium life cycle occur in:
A)
man
done
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B)
mosquito
done
clear
C)
pig
done
clear
D)
goat
done
clear
View Answer play_arrow
question_answer 131) PCR was developed by :
A)
Karry Mullis (1983)
done
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B)
E. Southern (1980)
done
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C)
Francis Collins (1985)
done
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D)
James D. Watson (1953)
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question_answer 132) Ragi is:
A)
Eleusine coracana
done
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B)
Hordeum vulgare
done
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C)
Pennisetum typhoides
done
clear
D)
Triticum aestivum
done
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question_answer 133) International Rice Research Institute (IRRI) is located at:
A)
Hyderabad (India)
done
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B)
Manila (Philippines)
done
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C)
New York (USA)
done
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D)
Tokyo (Japan)
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View Answer play_arrow
question_answer 134) Which hormone is responsible for ovulation?
A)
FSH
done
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B)
LH
done
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C)
Testosterone
done
clear
D)
Oestrogen
done
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question_answer 135) Centromere is also called :
A)
chromomere
done
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B)
secondary constriction
done
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C)
primary constriction
done
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D)
chromocentre
done
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question_answer 136) VCRC stand for:
A)
Vaccine Creation Research Centre
done
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B)
Vector Control Research Centre
done
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C)
Venum Control Research Centre
done
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D)
Vital Chemical Release Centre
done
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question_answer 137) An aquatic fern used as bio-fertilizer is :
A)
Marsilea
done
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B)
Azolla
done
clear
C)
Pteridium
done
clear
D)
Salvinia
done
clear
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question_answer 138) Which of the following protozoan, attacks gums in man?
A)
Entamoeba gingivalis
done
clear
B)
Trichomonas
done
clear
C)
Giardia
done
clear
D)
All of the above
done
clear
View Answer play_arrow
question_answer 139) IPM (Integrated Pest Management) involves :
A)
tissue culture
done
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B)
biological control
done
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C)
bio-fertilizers
done
clear
D)
confusion technique
done
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View Answer play_arrow
question_answer 140) Philosophic Zoologique was written by :
A)
Lamarck
done
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B)
de Vries
done
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C)
Mendel
done
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D)
Spencer
done
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question_answer 141) Which of the following is correctly matched?
A)
Anopheles-Malaria
done
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B)
House fly-Yellow fever
done
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C)
Body loose-Typhoid
done
clear
D)
Sandfly-Plague
done
clear
View Answer play_arrow
question_answer 142) Incomplete breakdown of sugar in anaerobic respiration forms :
A)
glucose and \[C{{O}_{2}}\]
done
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B)
alcohol and \[C{{O}_{2}}\]
done
clear
C)
water and \[C{{O}_{2}}\]
done
clear
D)
fructose and water
done
clear
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question_answer 143) Life cycle of Plasmodium is :
A)
monogenetic
done
clear
B)
digenetic
done
clear
C)
trigenetic
done
clear
D)
polygenetic
done
clear
View Answer play_arrow
question_answer 144) A child with mother of A blood group and father of AB blood group, will not have the following blood group :
A)
B
done
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B)
A
done
clear
C)
AB
done
clear
D)
0
done
clear
View Answer play_arrow
question_answer 145) What is correct about test tube baby?
A)
Fertilization outside and gestation inside womb of mother
done
clear
B)
Fertilization inside female genital tract and growth in test tube
done
clear
C)
Rearing of prematurely born baby in incubator
done
clear
D)
Both fertilization and -development are effected outside the female genital tract
done
clear
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question_answer 146) Most important component of oral contraceptive is :
A)
LH
done
clear
B)
GH
done
clear
C)
thyroxine
done
clear
D)
progesterone
done
clear
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question_answer 147) Purpose of tubectomy is to prevent:
A)
fertilization
done
clear
B)
coitus
done
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C)
egg formation
done
clear
D)
embryonic development
done
clear
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question_answer 148) Fossil man, who made cave panitings is :
A)
Java man
done
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B)
Neanderthal man
done
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C)
Cro-magnon man
done
clear
D)
Peking man
done
clear
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question_answer 149) Calvin cycle occurs in :
A)
cytoplasm
done
clear
B)
chloroplasts
done
clear
C)
mitochondria
done
clear
D)
glyoxysomes
done
clear
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question_answer 150) Which of the following enzyme, is used to cut DNA strand at specific site?
A)
DNA ligase
done
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B)
DNA polymerase
done
clear
C)
RNA polymerase
done
clear
D)
Restriction endonuclease
done
clear
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