question_answer 1) Indium impurity in germanium makes it into a:
A)
\[n\]-type of semiconductor
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B)
p-type semiconductor
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C)
insulator
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D)
intrinsic semiconductor
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question_answer 2) Kinetic energy of an electron in the first Bohrs orbit of the hydrogen atom is :
A)
\[-6.5eV\]
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B)
\[+13.6eV\]
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C)
\[-29.6\text{ }eV\]
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D)
\[-13.6\text{ }eV\]
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question_answer 3) If the refractive angles of the prisms made of crown glass are\[10{}^\circ \]and\[20{}^\circ \]respectively. Then the ratio of their colour deviation power will be:
A)
4 :1
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B)
3 :1
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C)
2 :1
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D)
1:1
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question_answer 4) If a current of 10 amp flows in 1 sec through a coil and the induced emf is 10 volt. Then the self-inductance of the coil will be:
A)
\[-1H\]
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B)
\[-\frac{5}{4}H\]
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C)
\[-\frac{4}{5}\]
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D)
\[-\frac{2}{5}H\]
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question_answer 5) If a long hollow copper pipe carries a current then the produced magnetic field will be:
A)
both inside and outside the pipe
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B)
neither inside and nor outside pipe
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C)
inside the pipe only
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D)
outside the pipe only
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question_answer 6) The bodies moving toward each other collide and move away in opposite direction. This is same as rise in temperature of bodies is due to apart of kinetic energy converted into:
A)
electrical energy
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B)
nuclear energy
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C)
mechanical energy
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D)
heat energy
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question_answer 7) A particle executes S.H.M. of amplitude Then the distance from the initial position, if its kinetic energy is equal to its potential energy:
A)
0.71 A
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B)
1.42 A
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C)
0.375 A
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D)
0.91 A
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question_answer 8) The two electric bulbs have 40 watt and 60w rating at 220V. Then the ratio of their resistance will be:
A)
1 : 4
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B)
3 : 2
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C)
4 : 3
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D)
2 : 3
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question_answer 9) If the earth losses its gravity then for body:
A)
weight becomes zero but not mass
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B)
mass becomes zero but not the weight
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C)
both mass and weight become zero
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D)
neither mass nor weight become zero
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question_answer 10) A box is lying on an inclined plane. If the box starts sliding when the angle of inclination is \[45{}^\circ ,\]then its coefficient of friction will be:
A)
1
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B)
2
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C)
\[\sqrt{3}\]
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D)
\[\frac{\sqrt{3}}{2}\]
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question_answer 11) In a semiconductor separation between conduction and valence band is of the order of :
A)
0 eV
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B)
1 eV
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C)
10 eV
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D)
50 eV
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question_answer 12) If an electron jumps from 1st orbit to IIIrd orbit, then it will:
A)
not gain energy
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B)
absorb energy
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C)
release energy
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D)
none of these
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question_answer 13) A person whose nearest distance of distinct vision is 60 cm uses a reading lens of 15 cm focal length. Then the magnification will be:
A)
5
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B)
3
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C)
2
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D)
1
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question_answer 14) If the magnetic material which moves from strong to weaker parts of magnetic field. Then it is called :
A)
anti-ferromagnetic
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B)
ferromagnetic
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C)
paramagnetic
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D)
diamagnetic
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question_answer 15) A resonance air column of length 17.4 cm resonates with a tuning fork of frequency 512 Hz. The speed of sound in air is :
A)
356 m/s
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B)
330 m/s
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C)
343 m/s
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D)
372 m/s
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question_answer 16) When a copper sphere is heated then the percentage increase is maximum in :
A)
diameter
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B)
volume
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C)
length
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D)
area
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question_answer 17) If the capacity of a spherical conductor is 1 picofarad then its diameter is :
A)
\[18\times {{10}^{-3}}m\]
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B)
\[9\times {{10}^{-3}}m\]
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C)
\[4.5\times {{10}^{-3}}m\]
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D)
None of these
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question_answer 18) A body is thrown vertically up from the ground. It reaches maximum height of 20 m in 5 sec then it will reach the ground from its maximum height position after:
A)
10 sec
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B)
2 - 5 sec
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C)
7.5 sec
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D)
5 sec
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question_answer 19) A man is standing on a spring platform. Reading of spring balance is 60 kg wt. If man jumps outside from the platform then the reading of spring balance will:
A)
become zero
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B)
increase
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C)
remains same
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D)
first [b] then [a]
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question_answer 20) If two balls, each of mass 0.06 kg moving in opposite direction with speed 4 m/s, collide and rebound with the same speed then impulse imarted to each ball become of other will be :
A)
0.48 kg m/s
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B)
0.21 kg m/s
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C)
9.12 kg m/s
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D)
none of these
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question_answer 21) The intrinsic semiconductor become an insulator at:
A)
0 K
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B)
300 K
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C)
\[0{}^\circ C\]
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D)
\[-100{}^\circ C\]
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question_answer 22) The spectrum obtained from sodium vapour lamp is an example of:
A)
absorption spectrum
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B)
emissive spectrum
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C)
continuous spectrum
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D)
bond spectrum
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question_answer 23) If 1000 droplets each of potential 1 volt and radius r are mixed to form a big drop. Then the potential of the drop as compared to small droplets, will be:
A)
1000 volt
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B)
800 volt
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C)
100 volt
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D)
20 volt
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question_answer 24) If a magnet of length 10 cm and pole strength 40 am is placed at an angle\[45{}^\circ \]in an uniform induction field intensity\[2\times {{10}^{-4}}T\]. The couple acting on it will be:
A)
\[0.5656\times {{10}^{-3}}Nm\]
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B)
\[0.656\times {{10}^{-4}}N-m\]
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C)
\[0.5656\times {{10}^{-5}}Nm\]
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D)
\[0.5656\times {{10}^{-4}}N-m\]
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question_answer 25) Kinetic energy of an electron accelerated in a potential difference of 1000 volt, will be:
A)
\[1.6\times {{10}^{-21}}\text{J}\]
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B)
\[1.6\times {{10}^{-23}}\text{J}\]
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C)
\[1.6\times {{10}^{-10}}\text{J}\]
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D)
\[1.6\times {{10}^{-16}}\text{J}\]
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question_answer 26)
The equivalent resistance \[R{{p}_{Q}}\] between point \[p\] and \[Q\] will be:
A)
\[8\,\Omega \]
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B)
\[2.4\,\Omega \]
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C)
\[4.5\,\Omega \]
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D)
\[3\,\Omega \]
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question_answer 27) Two waves are said to be coherent, if they have:
A)
same frequency, phase and amplitude
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B)
different phase and frequency and amplitude
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C)
same phase and different amplitude
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D)
same frequency but different amplitude
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question_answer 28) In gases of diatomic molecules, the ratio of two specific heats of gases \[\frac{{{C}_{p}}}{{{C}_{\upsilon }}}\] is :
A)
1.21
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B)
1.33
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C)
2.80
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D)
1.40
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question_answer 29) Velocity time curve for body projected vertically upward is:
A)
hyperbola
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B)
ellipse
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C)
parabola
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D)
straight line
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question_answer 30) A bomb is fired from a cannon with a velocity of of 1000 m/s making an angle of\[30{}^\circ \] with the horizontal. The time taken by the bomb to reach the highest point, will be:
A)
51 sec
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B)
25.5 sec
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C)
61 sec
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D)
21 sec
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question_answer 31) A black body at a temperature of 900 K emits energy at a rate, which is proportional to:
A)
\[{{(900)}^{3}}\]
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B)
\[{{(900)}^{4}}\]
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C)
(900)
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D)
\[{{(900)}^{2}}\]
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question_answer 32) Number of electron emitted by a surface exposed to light is directly proportional to the:
A)
wavelength of light
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B)
frequency of light
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C)
intensity of light
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D)
velocity of light
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question_answer 33) The radium of a circular path of an electron moving in the magnetic field to its path is equal to:
A)
\[\frac{m\upsilon }{Be}\]
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B)
\[\frac{me}{B}\]
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C)
\[\frac{mE}{B}\]
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D)
\[\frac{Be}{m\upsilon }\]
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question_answer 34) A moving conductor coil produces an induced emf this is in accordance with :
A)
Ampere law
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B)
Coulombs law
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C)
Faradaya law
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D)
Lenzs Law
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question_answer 35) The coefficient of volumetric expansion of mercury is\[18\times {{10}^{-5}}{{/}^{0}}C.\] A thermometer bulb has value of\[{{10}^{-6}}{{m}^{3}}\]and crossectional of stem is \[0.002\text{ }c{{m}^{2}}\]assuming the bulb is tilled mercury at \[{}^\circ C\] the length of mercury at\[100{}^\circ C\] is:
A)
18 cm
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B)
4.5 cm
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C)
2.25 cm
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D)
9 cm
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question_answer 36) A hot electric iron has a resistance of 80\[\Omega \] and is used on a 200 volt source. The electrical energy spent, if used for 2 hrs, is:
A)
8000Wh
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B)
2000Wh
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C)
1000Wh
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D)
500Wh
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question_answer 37) A source is moving towards an observer with a speed of 20 m/s and having frequency of 240 Hz. The observer now moving towards the source with a speed of 20 m/s. Apparent frequency heard by the observer, is (velocity of sound = 340 m/s):
A)
270 Hz
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B)
540 Hz
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C)
135 Hz
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D)
370 Hz
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question_answer 38) A bomb is dropped from an aeroplane moving horizontally at constant speed, when air resistance is taken into consideration. Then the bomb :
A)
falls on the earth the exactly below the aeroplane
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B)
tails on earth behind aeroplane
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C)
falls with aeroplane
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D)
falls on earth ahead the aeroplane
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question_answer 39) A car of mass 1500 kg is moving with a speed of 12.5 m/s on a circular path of radius 20 cm on a level road. The coefficient of friction between the car and the road, so that the car does not slip, will be:
A)
0.8
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B)
0.4
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C)
0.2
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D)
0.1
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question_answer 40) If force \[\vec{F}=4\hat{i}+5\hat{j}\] and displace\[\vec{s}=3\hat{i}+10\hat{k}\] then the work done will be :
A)
\[4\times 6\]
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B)
\[6\times 3\]
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C)
\[5\times 6\]
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D)
\[4\times 3\]
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question_answer 41) Beilstein test is used for the detection of:
A)
N
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B)
S
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C)
\[Cl\]
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D)
Na
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question_answer 42) The mass of a compound of molecular formula \[{{C}_{60}}{{H}_{122}}\]is:
A)
\[1.4\times {{10}^{-21}}g\]
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B)
\[3.7\times {{10}^{-23}}g\]
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C)
\[4.1\times {{10}^{23}}g\]
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D)
\[4.7\times {{10}^{23}}g\]
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question_answer 43) The best water soluble hydroxide is:
A)
\[Ca{{(OH)}_{2}}\]
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B)
\[Mg{{(OH)}_{2}}\]
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C)
\[Sr{{(OH)}_{2}}\]
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D)
\[Ba{{(OH)}_{2}}\]
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question_answer 44) In a period the elements are arranged in sequence of:
A)
increasing charge on the nucleus
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B)
decreasing charge on the nucleus
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C)
equal charge on the nucleus
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D)
constant charge on the nucleus
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question_answer 45) The most favourable condition for the manufacture of\[N{{H}_{3}}\]is:
A)
high temperature and high pressure
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B)
low temperature and low pressure
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C)
high temperature and low pressure
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D)
low temperature and high pressure
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question_answer 46) The number of sodium atoms present in 2.3 g of sodium are:
A)
\[6.023\times {{10}^{22}}\]
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B)
\[6.012\times {{10}^{23}}\]
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C)
\[2.323\times {{10}^{20}}\]
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D)
\[2.323\times {{10}^{23}}\]
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question_answer 47) At\[25{}^\circ C\]the average kinetic energy of an ideal gas per molecule in S.I. unit\[[N=6.02\times {{10}^{23}}]\]is:
A)
\[6.17\times {{10}^{-21}}J\]
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B)
\[61.7\times {{10}^{-23}}J\]
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C)
\[6.17\times {{10}^{-20}}J\]
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D)
\[6.17\times {{10}^{-20}}J\]
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question_answer 48) The Bohrs orbit radius for the hydrogen atom \[(n=1)\]is approximately\[0.53\overset{o}{\mathop{\text{A}}}\,\]. The radius for the first excite state\[(n=2)\]orbit is:
A)
\[0.27\overset{o}{\mathop{\text{A}}}\,\]
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B)
\[1.27\overset{o}{\mathop{\text{A}}}\,\]
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C)
\[2.12\overset{o}{\mathop{\text{A}}}\,\]
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D)
\[3.12\overset{o}{\mathop{\text{A}}}\,\]
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question_answer 49) Radioactive lead, si^207 has a half life of 8 hours. Starting from 1 mg of\[_{82}P{{b}^{207}}\]how much will remain after 24 hours?
A)
\[\frac{1}{2}mg\]
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B)
\[\frac{1}{4}mg\]
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C)
\[\frac{1}{8}mg\]
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D)
\[\frac{1}{6}mg\]
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question_answer 50) The most readily absorpped gas on activated charcoal is:
A)
sulphur dioxide
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B)
nitrogen
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C)
hydrogen
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D)
oxygen
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question_answer 51) The reaction of alkyl halide and sodium metal in presence of dry ether is known as:
A)
Wurtzs reaction
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B)
Clemmensen reaction
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C)
Cannizzaros reaction
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D)
Kolbes reaction
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question_answer 52) The number of unpaired electrons in \[1{{s}^{2}},2{{s}^{2}}2{{p}^{3}}\]is:
A)
1
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B)
2
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C)
3
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D)
5
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question_answer 53) \[_{95}A{{m}^{241}}+X{{\xrightarrow[{}]{{}}}_{97}}B{{k}^{243}}+Y\] The value of X and Y must be:
A)
\[X{{=}_{2}}H{{e}^{4}},Y={{2}_{0}}{{n}^{1}}\]
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B)
\[X=2e,Y=a\]
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C)
\[X=a,Y=2e\]
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D)
\[X={{2}_{0}}{{n}^{1}},Y=2{{a}^{4}}\]
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question_answer 54) On heating\[MgC{{l}_{2}}.6{{H}_{2}}O,\]the product obtained is:
A)
\[MgCl\]
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B)
\[MgO\]
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C)
\[MgC{{l}_{2}}2{{H}_{2}}O\]
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D)
\[MgC{{l}_{2}}\]
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question_answer 55) The conversion of benzaldehyde into benzyl alcohol takes place by:
A)
Fitting reaction
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B)
Wurtz fitting reaction
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C)
Wurtz reaction
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D)
Cannizzaros reaction
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question_answer 56) The compound which does not have carboxyl group is:
A)
benzoic acid
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B)
picric acid
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C)
methanoic acid
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D)
ethanoic acid
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question_answer 57) A liquid which decompose at its normal pressure can be purified by:
A)
steam distillation
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B)
sublimation
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C)
fractional distillation
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D)
vacuum distillation
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question_answer 58) Which is not effected by temperature?
A)
Molality
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B)
Molarity
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C)
Normality
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D)
Formality
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question_answer 59) Nesslers reagent is:
A)
\[H{{g}_{2}}{{I}_{2}}+N{{H}_{4}}OH\]
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B)
\[{{K}_{2}}Hg{{I}_{4}}+KOH\]
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C)
\[KHg{{I}_{4}}+N{{H}_{4}}OH\]
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D)
\[KHg{{I}_{2}}+KOH\]
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question_answer 60) If the initial concentration of reactants in certain reaction is doubled, the half life period of the reaction doubles, the order of reaction is:
A)
3rd
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B)
1st
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C)
2nd
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D)
zero
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question_answer 61) A gas has a vapour density 11.2. The volume occupies by 1 g of the gas at NTP is:
A)
1L
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B)
11.2 L
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C)
22.4 L
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D)
4 L
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question_answer 62) The highest first ionisation potential is of:
A)
carbon
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B)
boron
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C)
oxygen
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D)
nitrogen
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question_answer 63) By adding 25 ml of\[3\text{ }M\text{ }HCl\]to 75 ml of \[0.05M\text{ }HCl,\]the molarity of\[HCl\]in the resulting solution is:
A)
0.7875
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B)
0.9346
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C)
1.2476
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D)
1.6684
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question_answer 64) If\[n=3,\text{ }l=0\]and\[m=0,\]then atomic number is:
A)
12, 13
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B)
13, 14
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C)
10, 11
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D)
11, 12
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question_answer 65) On heating lead nitrate produce:
A)
\[{{N}_{2}}O\]
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B)
\[NO\]
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C)
\[N{{O}_{2}}\]
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D)
\[{{N}_{2}}{{O}_{5}}\]
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question_answer 66) lodoform reaction is not given by:
A)
acetayehyde
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B)
acetone
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C)
propanpl
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D)
ethanol
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question_answer 67) \[{{K}_{4}}[Fe{{(CN)}_{6}}]\]is used for detecting:
A)
\[Z{{n}^{2+}}\]ion
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B)
\[C{{u}^{2+}}\]ion
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C)
\[F{{e}^{2+}}\]ion
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D)
all of the above
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question_answer 68) On hydrolysis maltose produce:
A)
galactose
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B)
mannose
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C)
glucose
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D)
fructose
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question_answer 69) Paracetamol is an:
A)
antibiotic
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B)
antipyretic
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C)
antimalarial
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D)
analgesic
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question_answer 70) Rhombic and monoclinic sulphur are at equilibrium at the transition temperature\[(95.5{}^\circ C)\]. The enthalpy of transition at\[95{}^\circ C\] is\[353.8Jmo{{l}^{-1}}\]. The entropy of transition is:
A)
\[0.46\text{ }J{{K}^{-1}}mo{{l}^{-1}}\]
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B)
\[0.96\text{ }J{{K}^{-1}}mo{{l}^{-1}}\]
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C)
\[1.12J{{K}^{-1}}mo{{l}^{-1}}\]
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D)
\[1.42\text{ }J{{K}^{-1}}mo{{l}^{-1}}\]
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question_answer 71) Benzaldehyde gives a positive test with:
A)
Tollens reagent
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B)
Fehlings solution
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C)
Benedicts solution
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D)
all of the above
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question_answer 72) One mole of an ideal gas at\[25{}^\circ C\]is subjected to expand reversibly ten times of its initial volume. The change in entropy of expansion is:
A)
\[12.13J{{K}^{-1}}mo{{l}^{-1}}\]
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B)
\[15.17J{{K}^{-1}}mo{{l}^{-1}}\]
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C)
\[17.15\text{ }J{{K}^{-1}}mo{{l}^{-1}}\]
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D)
\[19.15J{{K}^{-1}}mo{{l}^{-1}}\]
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question_answer 73) Which is not a colligative property?
A)
Osmotic pressure
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B)
Optical activity
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C)
Elevation in boiling point
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D)
Depression in freezing point
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question_answer 74) Acetylene contains bonds:
A)
\[4\sigma \]and\[1\pi \]
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B)
\[3\sigma \]and\[2\pi \]
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C)
\[5\sigma \]and\[2\pi \]
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D)
\[5\sigma \]and\[3\pi \]
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question_answer 75) The volume of 2.8 gm of carbon monoxide at \[27{}^\circ C\]and 0.821 atm pressure is [R = 0.0821 litre atm \[mo{{l}^{-1}}{{K}^{-1}}\]]:
A)
0.5 litre
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B)
1.51itrc
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C)
3 litre
done
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D)
6 litre
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question_answer 76) \[{{O}_{2}}\] molecule is:
A)
ferromagnetic
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B)
paramagnetic
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C)
diamagnetic
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D)
none of these
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question_answer 77) The correct order of electronegativity of halogens is:
A)
\[Cl>Br>I>F\]
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B)
\[Br>I>Cl>F\]
done
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C)
\[I>Br>Cl>F\]
done
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D)
\[F>Cl>Br>I\]
done
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question_answer 78) In sulphur detection of an organic compound, sodium nitropruside solution is added to sodium extract. Formation of violet colour is due to:
A)
\[N{{a}_{3}}Fe{{(CN)}_{6}}\]
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B)
\[N{{a}_{3}}[Fe{{(CN)}_{5}}NOSNa]\]
done
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C)
\[N{{a}_{3}}[Fe{{(CN)}_{5}}NS]\]
done
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D)
\[Fe{{(CNS)}_{3}}\]
done
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question_answer 79) Epsom salt is:
A)
\[MgS{{O}_{4}}.2{{H}_{2}}O\]
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B)
\[MgS{{O}_{4}}.7{{H}_{2}}O\]
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C)
\[BaS{{O}_{4}}.2{{H}_{2}}O\]
done
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D)
\[CaS{{O}_{4}}.2{{H}_{2}}O\]
done
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question_answer 80) Cobalt is present in:
A)
vitamin \[{{B}_{1}}\]
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B)
vitamin \[{{B}_{2}}\]
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C)
vitamin \[{{B}_{6}}\]
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D)
vitamin \[{{B}_{12}}\]
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question_answer 81) The solubility product of\[AgBr\]solution is \[4\times {{10}^{-13}}\] moles/litre. The Ag1 ion concentration in it is \[1\times {{10}^{-6}}\] moles/litre. The Br- ion concentration is:
A)
\[1\times {{10}^{-6}}\]
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B)
\[2\times {{10}^{-6}}\]
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C)
\[2\times {{10}^{-7}}\]
done
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D)
\[4\times {{10}^{-7}}\]
done
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question_answer 82) The number of water molecules present in Mohrs salt is:
A)
5
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B)
6
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C)
8
done
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D)
10
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question_answer 83) The rate of diffusion of hydrogen gas is:
A)
two times than He
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B)
four times than He
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C)
1.4 times than He
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D)
similar to He
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question_answer 84) The number of essential amino acid in human being is:
A)
10
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B)
12
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C)
14
done
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D)
16
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question_answer 85) The monomers of terelene is:
A)
ethylene glycol and terephthalic acid
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B)
adipic acid and hexamethylene diamine
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C)
ethylene glycol and phthalic acid
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D)
adipic acid and vinyl chloride
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question_answer 86) The product formed by exposure of ether to oxygen and sunlight:
A)
alkane
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B)
alkene
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C)
oxide
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D)
peroxide
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question_answer 87) The hydrolysis of\[PC{{l}_{3}}\]produce:
A)
\[{{H}_{3}}P{{O}_{3}}\]
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B)
\[{{H}_{3}}P{{O}_{4}}\]
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C)
\[HP{{O}_{3}}\]
done
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D)
\[POC{{l}_{3}}\]
done
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question_answer 88) Milk is:
A)
gel
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B)
sol
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C)
suspension
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D)
emulsion
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question_answer 89) The oxidation number of nitrogen in nitric acid is:
A)
+4
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B)
+5
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C)
\[-4\]
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D)
\[-5\]
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question_answer 90) Industrially methanol is produced from :
A)
\[C{{H}_{3}}COOH\]
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B)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
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C)
\[C{{H}_{3}}CHO\]
done
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D)
\[CO+{{H}_{2}}\]
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question_answer 91) The standard e.m.f. for the cell reaction, \[2C{{u}^{2+}}_{(aq)}\xrightarrow[{}]{{}}C{{u}_{(s)}}+C{{u}^{2+}}(aq)\] is +0.36V at 298 K. The equilibrium constant of the reaction is:
A)
\[5\times {{10}^{6}}\]
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B)
\[1.4\times {{10}^{12}}\]
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C)
\[7.4\times {{10}^{12}}\]
done
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D)
\[1.2\times {{10}^{6}}\]
done
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View Answer play_arrow
question_answer 92) The standard e.m.f. of the cell, \[Cd(s)|CdC{{l}_{2}}(aq)(0.1M)||AgCl(s)|Ag(s)\]in which the cell reaction is: \[Cd(s)+2AgCl(s)\xrightarrow[{}]{{}}2Ag(s)+C{{d}^{2+}}(aq)\] \[+2C{{l}^{-}}(aq)\] is 0.6915 V at 0°C and 0.6753 V at\[25{}^\circ C\]. The enthalpy change of the reaction at\[25{}^\circ C\]is:
A)
\[-176kJ\]
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B)
\[-234.7kJ\]
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C)
\[+123.5\text{ }kJ\]
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D)
\[-167.26\text{ }kJ\]
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View Answer play_arrow
question_answer 93) Which of the following statement is true?
A)
The relative lowering of vapour pressure of a solution is equal to the mole fraction of the solute present in the solution
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B)
Passage of solute molecules towards solution side through semipermeable membrane is osmosis.
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C)
The boiling point of a solution is always lower than the solvent
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D)
The boiling point of a liquid is the temperature at which its vapour pressure becomes equal to 260 mm
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question_answer 94) The deviation from the ideal gas behaviour of a gas can be expressed as:
A)
\[Z=\frac{P}{VRT}\]
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B)
\[Z=\frac{PV}{nRT}\]
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C)
\[Z=\frac{nRT}{PV}\]
done
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D)
\[Z=\frac{VR}{PT}\]
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question_answer 95) Which of the following statement is not true?
A)
The pressure of a gas is due to collision of the gas molecules with the walls of the container
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B)
The molecular velocity of any gas is proportional to the square root of the absolute temperature
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C)
The rate of diffusion of a gas is directly proportional to the density of the gas at constant pressure
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D)
Kinetic energy of an ideal gas is directly proportional to the absolute temperature
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question_answer 96) The unit of second order reaction rate constant is:
A)
\[{{L}^{-1}}.\text{ }mol.\text{ }{{s}^{-1}}\]
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B)
\[{{L}^{2}}.\text{ }mo{{l}^{-2}}.\text{ }{{s}^{-1}}\]
done
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C)
\[L.\text{ }mol.\text{ }{{s}^{-1}}\].
done
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D)
\[{{s}^{-1}}\]
done
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question_answer 97) Hess law states that:
A)
the standard enthalpy of an overall reaction is the sum of the enthalpy changes in individual reactions
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B)
enthalpy of formation of a compound is same as the enthalpy of decomposition of the compound into constituent elements, but with opposite sign
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C)
at constant temperature the pressure of a gas is inversely proportional to its volume
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D)
the mass of a gas dissolved per litre of a solvent is proportional to the pressure of the gas in equilibrium with the solution
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question_answer 98) The half-life of a reaction is halved as the initial concentration of the reactant is doubled. The order of the reaction is
A)
0.5
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B)
1
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C)
2
done
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D)
0
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question_answer 99) One gram of [A] decays by p-emission to 0.125 g in 200 years. The half-life period of the reaction is:
A)
0.014 years
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B)
6.66 years
done
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C)
66.6 years
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D)
666 years
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question_answer 100) Isotopes are:
A)
atoms of different elements having same mass number
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B)
atoms of same elements having same mass number
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C)
atoms of same elements having different mass number
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D)
atoms of different elements having same number of neutrons
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question_answer 101) How many tissue systems are suggested by Sachs:
A)
two
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B)
three
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C)
four
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D)
five
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question_answer 102) The function of vessel is :
A)
conduction of food
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B)
conduction of water & minerals
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C)
to help in transpiration
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D)
to help in respiration
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question_answer 103) When vegetative cells of sporophyte form an embryo it is called :
A)
Apospory
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B)
Apogamy
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C)
Apomixis
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D)
Adventive polyembryony
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question_answer 104) Which of the following is used for ripening of fruits ?
A)
Auxin
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B)
ABA
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C)
Ethylene gas
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D)
Cytokinin
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question_answer 105) Induction of flowering in plants by low temperature treatment is called :
A)
Vernalization
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B)
Photoperiodism
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C)
Cryobiology
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D)
Chilozology
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question_answer 106) The enzyme restriction endonucleases:
A)
cuts single strand of DNA
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B)
joins the strands of DNA
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C)
cuts double strand of DNA
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D)
cuts RNA strand
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question_answer 107) Kufri Pukhraj is a hybrid clone of:
A)
Rice
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B)
Potato
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C)
Grape
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D)
Wheat
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question_answer 108) Climatology is the science of:
A)
biotic factors
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B)
climatic factors
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C)
edaphic factors
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D)
topographic factors
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question_answer 109) Aril is the edible part of:
A)
Apple
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B)
Grapes
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C)
Orange
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D)
Litchi
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question_answer 110) Pyruvic acid is formed during :
A)
Krebs cycle
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B)
Glycolysis
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C)
Omithine cycle
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D)
Calvin cycle
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question_answer 111) Phagocytosis was observed first time by:
A)
Huxley
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B)
Strassburger
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C)
Matchnikoff
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D)
Haeckel
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question_answer 112) Poisonous sea-snakes possess a :
A)
compressed tail
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B)
printed tail
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C)
depressed tail
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D)
conical tail
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question_answer 113) When seed germinates, while the fruit is attached to parent plant, it is called:
A)
apomixes
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B)
vivipary
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C)
parthenocarpy
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D)
parthenogenesis
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question_answer 114) Blue-green alga are included in:
A)
protista
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B)
fungi
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C)
prokaryotes
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D)
bryophytes
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question_answer 115) Echidna is found in:
A)
India
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B)
Africa
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C)
Malaya
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D)
Australia
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question_answer 116) Cellulose is a :
A)
Monosaccharide
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B)
Disaccharide
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C)
Polysaccharide
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D)
Lipid
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question_answer 117) The stored food material of muscles is :
A)
Starch
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B)
Glycogen
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C)
Lipid
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D)
Protein
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question_answer 118) Urease enzyme was obtained from :
A)
Urine
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B)
Canavalia
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C)
Ficus fruit
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D)
Pancreas
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question_answer 119) Which of the following is involved in transfer of electrons in photosynthesis ?
A)
phytochrome
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B)
cytochrome
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C)
photohormone
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D)
desmosome
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question_answer 120) Plant growth is :
A)
limited
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B)
unlimited
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C)
diffused
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D)
irretic
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question_answer 121) Hormone produced during leaf fall is :
A)
IAA
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B)
ABA
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C)
Florigen
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D)
KN
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question_answer 122) Climacteric fruit shows :
A)
high respiration rate at ripening
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B)
sudden change in taste
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C)
sudden change in colour & shape
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D)
none of the above
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question_answer 123) The joint of radio-ulna with upper arm is:
A)
higne joint
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B)
gliding joint
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C)
socket joint
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D)
pivot joint
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question_answer 124) Rough endoplasmic reticulum differs from smooth walled endoplasmic reticulum due to the presence of:
A)
DNA
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B)
ribosome
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C)
Ergastic substance
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D)
nucleus
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question_answer 125) Apoenzyme is:
A)
protein
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B)
vitamin
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C)
carbohydrate
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D)
amino acid
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question_answer 126) The basic unit of classification of plants & animals is:
A)
genus
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B)
species
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C)
variety
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D)
sub species
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question_answer 127) Sex organs in Funaria develop :
A)
is axil of leaf
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B)
at tip of gametophore
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C)
inside capsule
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D)
in protonema
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question_answer 128) Edible part of cauliflower is :
A)
bud
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B)
leaves
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C)
inflorescence
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D)
fruit
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question_answer 129) Which of the following has no stomata ?
A)
Hydrophytes
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B)
Submerged hydrophytes
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C)
Xerophytes
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D)
Mesophytes
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question_answer 130) Living fossil is :
A)
Pinus
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B)
Cycas
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C)
Ginkgo
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D)
Ephedra
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question_answer 131) The poisonous fluid present in the nematocyst of Hydra is :
A)
venom
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B)
toxin
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C)
hypnotoxin
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D)
haematin
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question_answer 132) Which of the following substance is at its lowest level in fish food ?
A)
Actin
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B)
Myosin
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C)
Cholesterol
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D)
Tissue fluid
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question_answer 133) Cumulus covers:
A)
ovary
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B)
ovum
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C)
zygote
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D)
embryo
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question_answer 134) The disorders like alkaptonuria and phenylkctonuria are referred as:
A)
acquired disease
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B)
infection disease
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C)
congential disease
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D)
all the above
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question_answer 135) Which of the following is a communicable disease ?
A)
Hypertension
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B)
Diabetes
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C)
Kwasniorkor
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D)
Diphtheria
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question_answer 136) The development of adult characteristics in a moulting insect is promoted by :
A)
thyroxine
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B)
ecdysone
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C)
pheromone
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D)
juvanile hormone
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question_answer 137) Who discovered that malaria is transmitted by mosquitoes ?
A)
Ronald Ross
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B)
Lancisi
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C)
Grnssi
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D)
Laveron
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question_answer 138) Which of the following is largest gland in adult man ?
A)
Thymus
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B)
Liver
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C)
Thyroid
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D)
Pancreas
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question_answer 139) Digestion of glucose takes pake in :
A)
colon
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B)
caucus
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C)
small intestine
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D)
large intestine
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question_answer 140) Sensation of stomach pain is due to :
A)
exteroceptors
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B)
interoceptors
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C)
teloreceptors
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D)
proprioceptors
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question_answer 141) Example of ophiveroidea is :
A)
Star fish
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B)
Brittle star
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C)
Sea urchin
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D)
Sand dwellers
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question_answer 142) Flatworms are:
A)
acoelomates
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B)
coclomates
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C)
haemocoelomates
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D)
pseudocoelomates
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question_answer 143) Which of the following class of Protozoa is totally parasitic ?
A)
Ciliata
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B)
Sporozoa
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C)
Sarcodina
done
clear
D)
Mastigophora
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question_answer 144) Which of the following is colourless Hydra ?
A)
H.fusca
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B)
H. oligactes
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C)
H. virides
done
clear
D)
H. vulgaris
done
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question_answer 145) During hibernation period, frogs respiration is:
A)
cutaneous
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B)
pulmonary
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C)
pharyngeal
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D)
buccopharyngeal
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question_answer 146) Anti-malarial drug quinine is extracted from bark of:
A)
Mango
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B)
Cinnamon
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C)
Cinchona
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D)
Commune
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question_answer 147) The technique of growing plants in water culture is called:
A)
Ikebana
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B)
Hydroponics
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C)
Tissue culture
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D)
Cell-culture
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question_answer 148) Which of the following plant shows multiple epidermis:
A)
Palm
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B)
Ficus
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C)
Croton
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D)
Cuciirbita
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question_answer 149) The correct sequence of electron acceptor in ATP synthesis:
A)
\[cyt.\text{ }a,{{a}_{3}},\text{ }b,\text{ }c\]
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B)
\[cyt.\text{ }b,\text{ }c,\text{ }a,\text{ }{{a}_{3}}\]
done
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C)
\[cyt.b,{{c}_{3}},\text{ }a,\text{ }{{a}_{3}}\]
done
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D)
\[cyt.\text{ }c,\text{ }b,a,{{a}_{3}}\]
done
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question_answer 150) Which of the following is parastic ?
A)
Nostoc
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B)
Polysiphonia
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C)
Chara
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D)
Cephaleuros
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question_answer 151) The edible plant part of mushroom is:
A)
basidiocarp
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B)
primary mycelium
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C)
secondary mycelium
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clear
D)
all of the above
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question_answer 152) What will happen if plant cells are placed in hypertonic solution?
A)
Turgid
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B)
Plasmolysed
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C)
Deplasmolysed
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clear
D)
Lysed
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question_answer 153) Loss of water from tips of leaf is called:
A)
bleeding
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B)
gestation
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C)
respiration
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D)
transpiration
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question_answer 154) Pond is an example of ecosystem:
A)
artifical
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B)
natural
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C)
forest
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D)
grassland
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question_answer 155) Which of the following occurs in fresh as well as marine water ?
A)
Spirogyra
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B)
Clai lophorn
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C)
Oedogonium
done
clear
D)
None of the above
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question_answer 156) Big bang theory was proposed by:
A)
Kant
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B)
Miller
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C)
Lemaitre
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D)
Darwin
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question_answer 157) Opium (aphim) is obtained from :
A)
Crotalaria
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B)
Coffea
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C)
Ramwifia
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clear
D)
Papaver sonmiferum
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question_answer 158) Which is man made cereal?
A)
Triticum
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B)
Hordeum
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C)
Triticale
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D)
Elusin
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question_answer 159) Branched conidiophores are present in :
A)
Rhizopus
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B)
Penicillium
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C)
Ustilago
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D)
Aspegrillus
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question_answer 160) Crown gall is caused by :
A)
Mycoplasma
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B)
Candida
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C)
Agrobacterium
done
clear
D)
Yeast
done
clear
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question_answer 161) The membrane surrounding cell vacuole is called:
A)
tonoplast
done
clear
B)
cell wall
done
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C)
plasma membrane
done
clear
D)
cell membrane
done
clear
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question_answer 162) National Botanical Research Institute (NBRI) is situated at:
A)
Lucknow
done
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B)
Bombay
done
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C)
Calcutta
done
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D)
Delhi
done
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question_answer 163) Nissles granules are found in :
A)
liver cells
done
clear
B)
nerve cells
done
clear
C)
kidney
done
clear
D)
heart
done
clear
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question_answer 164) Hutchinson system of classification is :
A)
Natural
done
clear
B)
Artifical
done
clear
C)
Phylogenetic
done
clear
D)
Binomial
done
clear
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question_answer 165) Thennal pollution is caused by :
A)
power plants
done
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B)
industries
done
clear
C)
automobiles
done
clear
D)
all the above
done
clear
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question_answer 166) Pure line breed refers to :
A)
homozygosity, independent assortmant only
done
clear
B)
hetirozygosity and linkage
done
clear
C)
heterozygosity only
done
clear
D)
none of the above
done
clear
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question_answer 167) Two free ribonucleotide units are interlinked with:
A)
peptide bond
done
clear
B)
covalent bond
done
clear
C)
hydrogen bond
done
clear
D)
phosphodiester bond
done
clear
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question_answer 168) Which of the following is related to increase in girth of plant ?
A)
Shoot apex
done
clear
B)
Root apex
done
clear
C)
Lateral meristem
done
clear
D)
Intercalary meristem of stamen
done
clear
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question_answer 169) Monoadelphous character is found in :
A)
Brassicaceae
done
clear
B)
Malvaceae
done
clear
C)
Poaceae
done
clear
D)
Solanaceae
done
clear
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question_answer 170) If an organism is crossed with homozygous recessive individual, it is called :
A)
back cross
done
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B)
test cross
done
clear
C)
simple cross
done
clear
D)
complex cross
done
clear
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question_answer 171) Humus is:
A)
dead and decayed organic matter
done
clear
B)
living matter
done
clear
C)
fertilizers
done
clear
D)
living animal/plants/microbes
done
clear
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question_answer 172) Bryophytes lack true :
A)
roots
done
clear
B)
stem
done
clear
C)
leaves
done
clear
D)
all the above
done
clear
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question_answer 173) Scurvy is caused due to deficiency of vitamin:
A)
B complex
done
clear
B)
C
done
clear
C)
K
done
clear
D)
D
done
clear
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question_answer 174) Which of the following has most reduced form of stem ?
A)
Rhizome
done
clear
B)
Stolons
done
clear
C)
Runner
done
clear
D)
Bulb
done
clear
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question_answer 175) Binomial nomenclature indicates :
A)
genus and species
done
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B)
genus and family
done
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C)
species and variety
done
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D)
phylum and genus
done
clear
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question_answer 176) Which is haploid in case of Cycas ?
A)
Stem
done
clear
B)
Root
done
clear
C)
Endosperm
done
clear
D)
All the above
done
clear
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question_answer 177) Tetradynamous stamens are- found in :
A)
Brassica
done
clear
B)
Pisum
done
clear
C)
Hibiscus
done
clear
D)
Cucurbita
done
clear
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question_answer 178) Pollinia are present in family :
A)
Brassicaceae
done
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B)
Cucurbitaceae
done
clear
C)
Asclepiadaceae
done
clear
D)
Malvaceae
done
clear
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question_answer 179) Nuclear endosperm is present in :
A)
Banana
done
clear
B)
Coconut
done
clear
C)
Phoenix
done
clear
D)
Mango
done
clear
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question_answer 180) Genetic code is :
A)
universal
done
clear
B)
non-ambiguous
done
clear
C)
triplet
done
clear
D)
all the above
done
clear
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question_answer 181) Cytoplasmic inheritance is due to :
A)
mitochondria
done
clear
B)
Kappa particles
done
clear
C)
both a and b
done
clear
D)
none of these
done
clear
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question_answer 182) Hurlers disease is caused by the absence of:
A)
mitochondria
done
clear
B)
lysosomes
done
clear
C)
lomosomes
done
clear
D)
mesosomes
done
clear
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question_answer 183) Which of the following is bounded by double membrane:
A)
Chloroplast
done
clear
B)
Mitochondria
done
clear
C)
Nucleus
done
clear
D)
All the above
done
clear
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question_answer 184) The process of formation of glycogen from glucose is called ?
A)
Glycogenesis
done
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B)
Lipogenesis
done
clear
C)
Gluconeogensis
done
clear
D)
Glycogenolysis
done
clear
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question_answer 185) The amount of energy given by one molecule of ATP is :
A)
7.6 kcal
done
clear
B)
7.3 kcal
done
clear
C)
6.86 kcal
done
clear
D)
7.06 kcal
done
clear
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question_answer 186) Which of the following is enucleate at maturity ?
A)
Cortical cell
done
clear
B)
Cambial cell
done
clear
C)
Meristematic cell
done
clear
D)
Sieve tube cell
done
clear
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question_answer 187) The cambuim which produces cork is called as:
A)
Phelloderm
done
clear
B)
Phellogen
done
clear
C)
Periblem
done
clear
D)
Plerome
done
clear
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question_answer 188) Casparian strips are characteristic feature of endodermis and made up of :
A)
cutin
done
clear
B)
pectin
done
clear
C)
suberin
done
clear
D)
cellulose
done
clear
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question_answer 189) Root pressure is measured by :
A)
Manometer
done
clear
B)
Potometer
done
clear
C)
Auxanometer
done
clear
D)
Osmometer
done
clear
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question_answer 190) Substrate for photorespiration is :
A)
Glycolate
done
clear
B)
Glucose
done
clear
C)
Lipid
done
clear
D)
Sucrose
done
clear
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question_answer 191) In aquaria, green plants are grown for:
A)
\[C{{O}_{2}}\]
done
clear
B)
\[{{O}_{2}}\]
done
clear
C)
beauty
done
clear
D)
all the above
done
clear
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question_answer 192) Which of the following is releated with transfer of food material ?
A)
Xylem
done
clear
B)
Collenchyma
done
clear
C)
Phloem
done
clear
D)
Parenchyma
done
clear
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question_answer 193) Vitamin containing cobalt is:
A)
\[A\]
done
clear
B)
\[{{B}_{6}}\]
done
clear
C)
\[{{B}_{1}}\]
done
clear
D)
\[{{B}_{12}}\]
done
clear
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question_answer 194) Which cells do not divide after birth?
A)
Nerve cells
done
clear
B)
Germ cells
done
clear
C)
Muscle cells
done
clear
D)
Osteocytes
done
clear
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question_answer 195) Main function of cerebellum is :
A)
Balancing
done
clear
B)
Sight
done
clear
C)
Hearing
done
clear
D)
Memory
done
clear
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question_answer 196) Meiosis occurs in:
A)
root cells
done
clear
B)
stem cells
done
clear
C)
leaf cells
done
clear
D)
pollen mother cells
done
clear
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question_answer 197) Genetic material of TMV is:
A)
RNA
done
clear
B)
DNA
done
clear
C)
DNAandRNA
done
clear
D)
none of these
done
clear
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question_answer 198) Bacteria with flagella all over body is called :
A)
peritrichous
done
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B)
monotrichous
done
clear
C)
lophotrichous
done
clear
D)
amphitrichous
done
clear
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question_answer 199) The largest cell organelle is :
A)
mitochondria
done
clear
B)
chloroplast
done
clear
C)
golgibody
done
clear
D)
chromosome
done
clear
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question_answer 200) Which of the following is unicellular?
A)
Yeast
done
clear
B)
E. coli
done
clear
C)
Acetabularia
done
clear
D)
All the above
done
clear
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