question_answer 1) A 10 \[\mu F\]capacitor is charged by a battery of emf 200V. The energy drawn from the battery, and the energy stored in the capacitor, are respectively
A)
0.05 J and 0 m J
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B)
0.05 mJ and 0.05 m J
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C)
0.4 J and 0.2 J
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D)
1.0 m J and 0.5 m J
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question_answer 2) A light spiral spring supports a 200 g weight at its lower end. It oscillates up and down with a period of 1 s. How much weight (gram) must be removed from the lower end to reduce the period to 0.5 s ?
A)
200
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B)
50
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C)
53
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D)
100
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question_answer 3) A source of sound of frequency n and a listener approach each other with a velocity equal to \[\frac{1}{20}\] of velocity of sound. The apparent frequency heard by the listener is
A)
\[\left( \frac{21}{19} \right)n\]
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B)
\[\left( \frac{20}{21} \right)n\]
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C)
\[\left( \frac{21}{20} \right)n\]
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D)
\[\left( \frac{19}{20} \right)n\]
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question_answer 4)
The displacement-time graphs of two bodies and B are shown in figure. The ratio \[\left( \frac{{{v}_{A}}}{{{v}_{B}}} \right)n\] of velocity of A to velocity of B, is
A)
\[\frac{1}{\sqrt{3}}\]
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B)
\[\sqrt{3}\]
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C)
\[\frac{1}{3}\]
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D)
\[3\]
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question_answer 5) A car is moving in a circular path of radius 500 m wih a speed of 30 m/s. If the speed is increasing, at the rate of \[\text{2 m}/{{\text{s}}^{\text{2}}},\] the resultant acceleration will be
A)
\[\text{2 m}/{{\text{s}}^{\text{2}}}\]
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B)
\[\text{2}.\text{5 m}/{{\text{s}}^{\text{2}}}\]
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C)
\[\text{2}.\text{7 m}/{{\text{s}}^{\text{2}}}\]
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D)
\[\text{4 m}/{{\text{s}}^{\text{2}}}\]
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question_answer 6) An AC supply of 100 V is applied to a capacitor of capacitance 20 \[\mu \text{F}.\]If the current in the circuit is 0.628 A, the frequency of AC. must be
A)
50 Hz
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B)
60 Hz
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C)
25 Hz
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D)
40 Hz
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question_answer 7) A cell of bmfX is connected across a resistor R. The potential difference across the wire is measured as \[Y.\]The internal resistance of the cell should be
A)
\[\frac{X-Y}{R}\]
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B)
\[\frac{(X-Y)R}{Y}\]
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C)
\[\frac{(X-Y)Y}{R}\]
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D)
\[(X-Y)R\]
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question_answer 8) Which of the following group is diamagnetic?
A)
Copper, hydrogen, silver
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B)
Copper, hydrogen, argon
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C)
Hydrogen, oxygen, argon
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D)
Copper, silver, oxygen
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question_answer 9) A wire has frequency \[f.\] Its length is doubled by stretching. Its frequency now will be
A)
1.4\[f\]
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B)
0.7\[f\]
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C)
2\[f\]
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D)
\[f\]
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question_answer 10) If a drop of water is introduced between the glass plate and a convex lens in a Newtons ring system, the ring system
A)
expands
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B)
contracts
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C)
remains same
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D)
first expands then contracts
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question_answer 11) A nicol prism is based on the action of
A)
double refraction
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B)
refraction
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C)
dichroism
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D)
Both (a) and (b)
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question_answer 12) A source of light suspended above a circular table at a height equal to the radius of the table gives an intensity I at the centre of the table, the intensity at the edge of the table would be (Assuming illuminace remains the same)
A)
0.251
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B)
0.51
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C)
0.77
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D)
2.87
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question_answer 13) The boiling point of mercury is \[367{}^\circ C\]. A mercury thermometer can be used to measure a temperature of \[500{}^\circ C\]
A)
by filling the space above mercury with oxygen at high pressure
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B)
by filling the space above mercury with nitrogen at low pressure
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C)
by filling the space above mercury with nitrogen at high pressure
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D)
by keeping the space above mercury as vacuum
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question_answer 14) 2 moles of monoatomic gas is mixed with 1 mole of a diatomic gas. Then y for the mixture is
A)
1.4
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B)
1.55
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C)
1.62
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D)
1.67
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question_answer 15) A body of mass 2 kg has an initial velocity of \[\text{5 m}{{\text{s}}^{-1}}\] along OE and it is subjected to a force of 4 N in a direction perpendicular to \[\text{OE}.\]The distance of the body from 0 after 4 s will be
A)
20m
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B)
48m
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C)
26m
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D)
12m
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question_answer 16) A solid cylinder of radius r rolls down on an inclined plane without slipping. The speed of the centre of mass when it reaches the bottom, is
A)
\[\sqrt{3gh}\]
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B)
\[\sqrt{4g}\]
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C)
\[\sqrt{\frac{3gh}{4}}\]
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D)
\[\sqrt{\frac{4gh}{3}}\]
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question_answer 17) The ratio of the radii of two spheres of the same mass, having the same moment of inertia about their diameters, one hollow and other solid, is
A)
\[\sqrt{3}:\sqrt{5}\]
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B)
\[\sqrt{4g}\]
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C)
25 9
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D)
9 25
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question_answer 18) The correct graph representing the relation between energy (E) of photoelectrons and frequency v of incident light is
A)
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B)
done
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C)
done
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D)
done
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question_answer 19) Nuclear force is
A)
short range and charge dependent
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B)
short range and charge independent
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C)
long range and charge dependent
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D)
long range and charge independent
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question_answer 20) The angular velocity of earth at present is \[\omega \] With what angular velocity should it rotate \[\omega \] that weight of a body at the equator appears\[\omega \] be zero?
A)
289\[\omega \]
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B)
17\[\omega \]
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C)
8\[\omega \]
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D)
2\[\omega \]
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question_answer 21) A force \[\overset{\to }{\mathop{F}}\,~=\text{ 6}\overset{\hat{\ }}{\mathop{\text{i}}}\,\text{ }+\text{ 5}\overset{\hat{\ }}{\mathop{\text{J}}}\,\]newton acts and displaces the body through \[\overset{\to }{\mathop{s}}\,~=\text{ 3}\overset{\hat{\ }}{\mathop{\text{i}}}\,\text{ }+\text{ 2}\overset{\hat{\ }}{\mathop{k}}\,\]metre. Then the work done is given by
A)
8J
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B)
28 J
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C)
18 J
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D)
10 J
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question_answer 22) The radius of aluminium nucleus (in fermi nearly
A)
1.5
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B)
2.5
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C)
4.5
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D)
13.5
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question_answer 23) A triode having \[{{\text{r}}_{p}}\text{ }=\text{ 25 k}\Omega \]is used as an oscillator with a load of 50 k\[\Omega \]. If gain is 20, amplification factor is
A)
75
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B)
50
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C)
30
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D)
25
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question_answer 24) The neutron has
A)
electron charge and spin
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B)
no charge but has spin
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C)
no charge and no spin
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D)
no charge but has exact mass of proton
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question_answer 25) When a hydrogen bomb explodes, which of the following is used ?
A)
Fission
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B)
Fusion
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C)
Both (a) and (b)
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D)
None of the above
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question_answer 26) A hollow metal ball 8 cm in diameter is given a charge \[-4\times {{10}^{-8}}C.\] The potential on the surface of the ball is
A)
zero
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B)
-90V
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C)
-9000V
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D)
-900V
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question_answer 27) n identical resistors each of resistance r when connected in parallel, have a total resistance R. When these resistors are connected in series, then effective resistance in terms ofR is
A)
\[\frac{R}{{{n}^{2}}}\]
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B)
\[{{n}^{2}}R\]
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C)
\[n\,R\]
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D)
\[\frac{R}{n\,}\]
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question_answer 28) Two electric bulbs, one of 200 V, 40 W and the other of 200V, 100W are connected in a domestic circuit. Then
A)
the resistance of the bulb of 100 W is more
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B)
the resistance of the bulb of 40 W is more
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C)
the resistance of both the bulbs are same
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D)
they have equal currents through them
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question_answer 29) Two identical capacitors are joined in parallel and charged to a potential V. Then these are separated and connected in series with the positive plate of one connected to the negative of the other. Then the
A)
potential difference between the plates becomes 2V
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B)
energy stored in the system increases
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C)
charges on the free plates are enhanced
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D)
charges on the plates connected together are destroyed
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question_answer 30) \[\left[ M{{L}^{2}}{{T}^{-3}}{{I}^{-1}} \right]\]is the dimension of
A)
electric field
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B)
capacity
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C)
potential
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D)
permittivity
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question_answer 31) The speed of the sound in air is 333 m/s. The fundamental frequency of the open pipe is 333 Hz. The second overtone of the open organ pipe can be produced with a pipe of length
A)
0.5 m
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B)
1.0m
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C)
1.5m
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D)
2.0m
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question_answer 32)
The \[v-t\]graph of a moving object is given in figure. The maximum acceleration is
A)
\[\text{1 cm}/{{\text{s}}^{\text{2}}}\]
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B)
\[\text{2 cm}/{{\text{s}}^{\text{2}}}\]
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C)
\[\text{3 cm}/{{\text{s}}^{\text{2}}}\]
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D)
\[\text{6 cm}/{{\text{s}}^{\text{2}}}\]
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question_answer 33) Water rises in a capillary tube up to a length 10 cm. If the tube is inclined at \[45{}^\circ \], the length of water rises in tube will be
A)
\[10\,cm\]
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B)
\[10\sqrt{2}\,\,cm\]
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C)
\[\frac{10}{\sqrt{2}}\,\,cm\]
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D)
None of these
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question_answer 34) As compared to a person with white skin, another person with dark (black) skin will experience
A)
less heat and more cold
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B)
more heat and more cold
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C)
more heat and less cold
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D)
less heat and less cold
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question_answer 35) If tube length of astronomical telescope is 105 cm and magnifying power is 20 for normal setting. The focal length of objective is
A)
100cm
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B)
10cm
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C)
20cm
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D)
25cm
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question_answer 36) At a certain place the horizontal component of the earths magnetic field is H and the angle of dip is 45°. The total intensity of the field at that place will be
A)
H
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B)
\[\sqrt{2}H\]
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C)
2 H
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D)
\[{{\text{H}}^{\text{2}}}\]
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question_answer 37) If transition temperature is doubled, the critical field will
A)
become half
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B)
become double
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C)
remain the same
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D)
become four times
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question_answer 38) Hydrogen and helium volume V at same temperature T and same pressure p are mixed to have same volume V. The resulting pressure of the mixture will be
A)
\[\frac{R}{2}\]
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B)
P
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C)
2P
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D)
depending on the relative mass of the gases
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question_answer 39) The quantity of heat required to heat 1 mole of a monoatomic gas through 1 K at constant pressure is
A)
3.5 R
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B)
2.5 R
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C)
1.5R
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D)
None of these
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question_answer 40) Light of wavelength 500 nm is used to form interference pattern in Youngs double slit experiment. A uniform glass plate of refractive index 1.5 and thickness 0.1 mm is introduced in the path of one of the interfering beams. The number of fringes which will shift the cross wire due to this is
A)
400
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B)
300
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C)
200
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D)
100
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question_answer 41) If a lens is moved towards the object from a distance of 20 cm to IS cm, the magnification of the image remains the same. The focal length of the lens is
A)
18.2cm
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B)
16.8cm
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C)
17.5cm
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D)
15.5cm
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question_answer 42) The displacement of a particle from its mean position (in metre) is given by \[\text{y }=0.\text{2 sin }\left( \text{10}\pi \text{t }+\text{ 1}.\text{5}\pi \right)\text{ cos }\left( \text{10}\pi \text{t }+\text{ l}.5\pi \right)\]The motion of the particle is
A)
periodic but not SHM
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B)
non periodic
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C)
simple harmonic motion with period 0.1 s
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D)
simple harmonic motion with period 0.2 s
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question_answer 43)
An ideal monoatomic gas is taken around the cycle ABCDA as shown in figure. The work done during the cycle is given by
A)
8pV
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B)
pV
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C)
4pV
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D)
2pV
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question_answer 44) When two bodies A and B are in them equilibrium
A)
the kinetic energies of all the molecules of A and B will be equal
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B)
the potential energies of all the molecules of A and B will be equal
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C)
the internal energies of the two bodies will be equal
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D)
the average kinetic energy of the molecules of two bodies will be equal
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question_answer 45) Two forces P and Q have a resultant perpendicular to P. The angle between forces is
A)
\[{{\tan }^{-1}}\left( -\frac{P}{Q} \right)\]
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B)
\[{{\tan }^{-1}}\left( \frac{P}{Q} \right)\]
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C)
\[{{\sin }^{-1}}\left( \frac{P}{Q} \right)\]
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D)
\[{{\cos }^{-1}}\left( -\frac{P}{Q} \right)\]
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question_answer 46) To increase the period of a pendulum by 1C the length should be increased by percentage)
A)
21
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B)
11
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C)
10.5
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D)
10
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question_answer 47) A satellite is rotating around a planet in orbit of radius r with time period\[T\]if gravitational force changes according to \[{{r}^{5/2}},\] then \[{{\text{T}}^{\text{2}}}\]will be
A)
\[\propto {{r}^{3}}\]
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B)
\[\propto {{r}^{7/2}}\]
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C)
\[\propto {{r}^{9/2}}\]
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D)
\[\propto {{r}^{3/2}}\]
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question_answer 48) The minimum force required to move a body of mass m vertically upward is
A)
mg
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B)
mg/2
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C)
more than 2mg
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D)
more than mg
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question_answer 49) A body of mass 1 kg crosses a point \[o\] with a velocity \[\text{6}0\text{ m}{{\text{s}}^{-1}}.\] A force of 10 N directed towards \[o\] begins to act on it. It will again cross O in
A)
24 s
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B)
12 s
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C)
6 s
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D)
will never return to O
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question_answer 50) In certain region on the screen, blue and red colours fall at the same time. This region will show
A)
yellow
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B)
magenta
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C)
indigo
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D)
brown
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question_answer 51) A covalent chloride is
A)
\[BeC{{l}_{2}}\]
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B)
\[NaCl\]
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C)
\[MgC{{l}_{2}}\]
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D)
\[CaC{{l}_{2}}\]
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question_answer 52) An element which exhibit an oxidation state +2. How many electrons are present in its outermost shell?
A)
6
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B)
8
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C)
2
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D)
5
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question_answer 53) The empirical formula of a compound is CH. Its molecular weight is 78. The molecular formula of compound will be
A)
\[{{C}_{2}}{{H}_{2}}\]
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B)
\[{{C}_{6}}{{H}_{6}}\]
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C)
\[{{C}_{3}}{{H}_{3}}\]
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D)
\[{{C}_{4}}{{H}_{4}}\]
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question_answer 54) The element that is easiest to be reduced
A)
Ag
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B)
Fe
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C)
Cu
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D)
Sn
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question_answer 55) The molecular weight of two gases are 100 and 81 respectively. Their rates of diffusions are in the ratio
A)
81 : 100
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B)
100 : 81
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C)
10 : 9
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D)
9 : 10
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question_answer 56) Among \[LiCl,\,\,BeC{{l}_{2}},\,BC{{l}_{3}}\] and \[CC{{l}_{4}}\], covalent bond character follows the order
A)
\[LiCl<BeC{{l}_{2}}<BC{{l}_{3}}<CC{{l}_{4}}\]
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B)
\[LiCl<BeC{{l}_{2}}>BC{{l}_{3}}>CC{{l}_{4}}\]
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C)
\[LiCl>BeC{{l}_{2}}<BC{{l}_{3}}<CC{{l}_{4}}\]
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D)
\[LiCl>BeC{{l}_{2}}>BC{{l}_{3}}>CC{{l}_{4}}\]
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question_answer 57) The correct designation of an electron with \[n=4,\,\,l=3,\,\,m=2\] and \[s=-\frac{1}{2}\] is
A)
5s
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B)
4s
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C)
4d
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D)
4 \[f\]
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question_answer 58) Tritium on radioactive decay gives
A)
proton
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B)
p particle
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C)
positron
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D)
a particle
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question_answer 59) In two separate bulbs containing ideal gases A and B respectively, the density of gas A is twice of that of gas B while mol. wt. of gas A is half of that of gas B at the same temperature, pressure. \[\frac{{{P}_{A}}}{{{p}_{B}}}\] will be
A)
1
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B)
4
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C)
\[\frac{1}{4}\]
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D)
\[\frac{1}{2}\]
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question_answer 60) On passing electric current of one ampere for 16 min and 5 s through one litre solution of\[CuC{{l}_{2}}\], all copper solution was deposited at cathode. The strength of \[CuC{{l}_{2}}\] solution was (molar mass of Cu = 63.5, faraday constant = 96500 C/mol)
A)
0.2 N
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B)
0.01 N
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C)
0.001 N
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D)
0.02 N
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question_answer 61) The ionic product of water...........with the increase in temperature
A)
decreases
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B)
increases
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C)
remains constant
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D)
None of the above
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question_answer 62) Consider reversible reaction,\[HCN(aq){{H}^{+}}(aq)+C{{N}^{-}}(aq)\] At equilibrium the addition of \[C{{N}^{-}}(aq)\] would
A)
decrease the \[{{H}^{+}}(aq)\] ion concentration
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B)
reduce HCN (aq) concentration
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C)
increase the equilibrium constant
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D)
decrease the equilibrium constant
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question_answer 63) For the reaction\[C(s)+C{{O}_{2}}(g)2CO(g)\]the partial pressure for \[C{{O}_{2}}\] and CO are 4 and 8 atm respectively. \[{{K}_{p}}\] for the reaction is
A)
1 atm
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B)
5 atm
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C)
2 atm
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D)
16 atm
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question_answer 64) The binding energy per nucleon of oxygen atom \[_{8}{{O}^{16}}\], which has a mass 15.994910 u is : (mass of neutron = 1.008665, mass of proton = 1.007277 u, mass of electron = 0.0005486 u) is
A)
7.976 MeV
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B)
8.542 MeV
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C)
6.62 MeV
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D)
931 MeV
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question_answer 65) \[{{t}_{1/2}}\] for Kr is 10.6 yr. The time taken for 99.9% decay of Kr is
A)
106 yr
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B)
1060 yr
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C)
1.06 yr
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D)
10.6 yr
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question_answer 66) A gas is found to have formula \[{{(CO)}_{n}}\]. If its vapour density is 56, the value of n will be
A)
7
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B)
5
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C)
4
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D)
3
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question_answer 67) The same amount of electricity was passed through two cells containing molten \[A{{l}_{2}}{{O}_{3}}\] and molten \[NaCl\]. If 1.8 g of Al were liberated in one cell, the amount of Na liberated in other cell is
A)
2.8 g
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B)
3.2 g
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C)
4.6 g
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D)
6.8 g
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question_answer 68) The molal freezing point constant for water is\[{{1.86}^{o}}C/mol\]. If 342 g of sucrose \[({{C}_{12}}{{H}_{22}}{{O}_{11}})\]is dissolved in 1000 g of water, the solution will freeze at
A)
\[+{{1.86}^{o}}C\]
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B)
\[-{{1.86}^{o}}C\]
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C)
\[{{2.42}^{o}}C\]
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D)
\[{{3.92}^{o}}C\]
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question_answer 69) pH of 0.005 \[{{H}_{2}}S{{O}_{4}}\] solution is
A)
2
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B)
3
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C)
2.301
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D)
3.6990
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question_answer 70) The molal elevation constant is the ratio of elevation in b.p. to
A)
molality
done
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B)
mole fraction
done
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C)
molarity
done
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D)
None of these
done
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question_answer 71) Which of the following is the strongest acid?
A)
\[HCl{{O}_{4}}\]
done
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B)
\[HI{{O}_{3}}\]
done
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C)
\[HN{{O}_{3}}\]
done
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D)
\[HBr{{O}_{4}}\]
done
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question_answer 72) For spontaneous process
A)
G decreases
done
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B)
G increases
done
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C)
S decreases
done
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D)
S = 0
done
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View Answer play_arrow
question_answer 73) If \[C(s)+{{O}_{2}}(g)\,\,\xrightarrow{{}}\,\,C{{O}_{2}}(g)\,;\] \[\Delta H=R\] and\[CO(g)+\frac{1}{2}{{O}_{2}}(g)\,\,\,\xrightarrow{{}}\,\,C{{O}_{2}}(g);\]\[\Delta H=S\] then heat of formation of CO is
A)
R + S
done
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B)
R - S
done
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C)
\[R\times S\]
done
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D)
S - R
done
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View Answer play_arrow
question_answer 74) When \[NaOH\] is added to a solution of\[C{{H}_{3}}COONa\], then
A)
the cone. of both \[O{{H}^{-}}\] and \[C{{H}_{3}}CO{{O}^{-}}\]increases
done
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B)
the cone. of \[C{{H}_{3}}CO{{O}^{-}}\] decreases
done
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C)
the cone. of \[C{{H}_{3}}CO{{O}^{-}}\] increases
done
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D)
dissociation of \[C{{H}_{3}}COONa\] increases
done
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question_answer 75) Chile salt petre is
A)
\[CaC{{O}_{3}}\]
done
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B)
\[NaN{{O}_{3}}\]
done
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C)
\[MgC{{O}_{3}}\]
done
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D)
\[KN{{O}_{3}}\]
done
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question_answer 76) Under what conditions will a pure sample of ideal gas not only exhibit a pressure of 1 atm, but also a concentration of 2 mol per litre?
A)
At STP
done
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B)
When volume is 22.4 L
done
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C)
At 6.1 K
done
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D)
When R has no unit
done
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View Answer play_arrow
question_answer 77) For the gas phase reaction,\[{{C}_{2}}{{H}_{4}}+{{H}_{2}}{{C}_{2}}{{H}_{6}}\]\[(\Delta H=-32.7\,\,kcal)\]carried out in a vessel, the equilibrium cone. of \[{{C}_{2}}{{H}_{6}}\] can be increased by
A)
increasing the pressure
done
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B)
decreasing the temperature
done
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C)
adding some Hz
done
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D)
All of the above
done
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View Answer play_arrow
question_answer 78) Pick out the isoelectronic structure from the following\[(I)\overset{+}{\mathop{C}}\,{{H}_{3}}(II){{H}_{3}}\overset{+}{\mathop{O}}\,(III)N{{H}_{3}}\,\,(IV)\overset{-}{\mathop{C}}\,{{H}_{3}}\]
A)
I and II
done
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B)
III and IV
done
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C)
II, III and IV
done
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D)
III and IV and I
done
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question_answer 79) Mg on heating to redness in an atmosphere of \[{{N}_{2}}\] and then on treating with \[{{H}_{2}}O\] gives
A)
\[N{{H}_{3}}\]
done
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B)
\[{{N}_{2}}\]
done
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C)
\[P{{H}_{3}}\]
done
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D)
MgO
done
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question_answer 80) Bond energy is highest for
A)
Ge?Ge
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B)
C?C
done
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C)
Sn?Sn
done
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D)
Si?Si
done
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question_answer 81) Which acid derivative on hydrolysis, will give brown precipitate with Nesslefs reagent?
A)
Acid anhydride
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B)
Acid amide
done
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C)
Acid chloride
done
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D)
All of the above
done
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question_answer 82) n-hexadecane (cetane) has cetane number
A)
110
done
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B)
90
done
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C)
100
done
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D)
zero
done
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question_answer 83) Alkyne occur in nature in
A)
partially free state
done
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B)
not in free state
done
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C)
free state
done
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D)
None of the above
done
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question_answer 84) Alkaline earth metals are
A)
reducing agent
done
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B)
amphoteric
done
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C)
dehydrating agent
done
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D)
oxidising agent
done
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question_answer 85) Copper sulphate is commercially made from copper scrap by
A)
heating with sodium sulphate
done
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B)
heating with sulphur
done
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C)
action of dil sulphuric acid and air
done
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D)
dissolving in hot concentrated sulphuric acid
done
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View Answer play_arrow
question_answer 86) To a piece of a charcoal sulphuric acid is added. Then
A)
there is no reaction
done
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B)
water gas is formed
done
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C)
\[S{{O}_{2}}\] and \[C{{O}_{2}}\] are evolved
done
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D)
CO and \[S{{O}_{2}}\] are evolved
done
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question_answer 87) What happens when carbonates, of IA group elements are heated?
A)
\[C{{O}_{2}}\] is given out
done
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B)
Water vapours are given out
done
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C)
Carbon dioxide and water vapours are evolved
done
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D)
None of the above
done
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question_answer 88) pH of aqueous of sodium borate is
A)
>7
done
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B)
6 > 7
done
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C)
7
done
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D)
< 7
done
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question_answer 89) Which of the following cannot act as reducing agent?
A)
\[N{{O}_{2}}\]
done
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B)
\[S{{O}_{2}}\]
done
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C)
\[C{{O}_{2}}\]
done
clear
D)
\[Cl{{O}_{2}}\]
done
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question_answer 90) The major product of dehydration of n-butyl alcohol is
A)
1-butene
done
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B)
1-butyne
done
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C)
2-butene
done
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D)
All of these
done
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question_answer 91) Colourless ion among the following is
A)
\[Z{{n}^{2+}}\]
done
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B)
\[C{{r}^{3+}}\]
done
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C)
\[{{V}^{2+}}\]
done
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D)
\[T{{i}^{3+}}\]
done
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question_answer 92) \[P{{I}_{3}}\] upon hydrolysis give
A)
monobasic acid and dibasic acid
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B)
monobasic and tribasic acid
done
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C)
monobasic acid and a salt
done
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D)
dibasic acid and tribasic acid
done
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question_answer 93) 1-propanol can be easily obtained from propene \[C{{H}_{3}}-CH=C{{H}_{2}}\], by oxidation in the presence of
A)
\[{{H}_{2}}S{{O}_{4}}\]
done
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B)
\[{{H}_{2}}O\]
done
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C)
\[{{B}_{2}}{{H}_{6}},{{H}_{2}}{{O}_{2}}\]
done
clear
D)
None of these
done
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View Answer play_arrow
question_answer 94) Benzoic acid with \[Ba{{(OH)}_{2}}\] gives
A)
barium benzoate
done
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B)
benzaldehyde
done
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C)
benzene
done
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D)
toluene
done
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question_answer 95) Diazonium salt is obtained when aniline reacts with
A)
cold NaOH
done
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B)
\[NaN{{O}_{2}}\] and \[HCl\,(0-{{5}^{o}}C)\]
done
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C)
\[SnC{{l}_{2}}\] at \[{{10}^{o}}C\]
done
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D)
\[{{N}_{2}}O\] at \[(0-{{5}^{o}}C)\]
done
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question_answer 96) Which of the following is formed on reaction of acetaldehyde with HCN followed by hydrolysis?
A)
Butyl alcohol
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B)
Acetic acid
done
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C)
Oxalic acid
done
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D)
Lactic acid
done
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question_answer 97) Gem dihalides on treatment with alcoholic KOH give
A)
alkyne
done
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B)
alkene
done
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C)
alkane
done
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D)
All of these
done
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question_answer 98) IUPAC name of \[{{({{C}_{2}}{{H}_{5}}CO)}_{2}}O\]
A)
acetic acid
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B)
propanoic anhydride
done
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C)
butanone
done
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D)
None of the above
done
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question_answer 99) Which of the following does not occur in free state?
A)
Pt
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B)
Os
done
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C)
Au
done
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D)
Cu
done
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question_answer 100) The number of \[\pi \] and n bonds in but-l-ene-3-yne are
A)
\[7\sigma \] and \[3\pi \]
done
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B)
\[8\sigma \] and \[2\pi \]
done
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C)
\[8\sigma \] and \[4\pi \]
done
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D)
\[5\sigma \] and \[5\pi \]
done
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question_answer 101) Virion is a
A)
bacterium
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B)
blue -green algae
done
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C)
simple virus particle
done
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D)
None of the above
done
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question_answer 102) The number of stomata present per \[c{{m}^{2}}\]of a leaf is
A)
1000
done
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B)
less than 100
done
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C)
one million
done
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D)
None of these
done
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question_answer 103) Binomial nomenclature means that every organism has
A)
two names one scientific and other popular
done
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B)
one scientific name consisting of a generic and a specific epithet
done
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C)
one name give by two scientists
done
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D)
two names, one latinize and other of the person
done
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question_answer 104) Mesophyll is well differentiated into palisade and spongy tissue in
A)
dicot leaves
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B)
monocot leaves
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C)
xerophytic stem
done
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D)
hydrophytic stem
done
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question_answer 105) Cell organelle common in Monera and Protista
A)
lysosome
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B)
chloroplast
done
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C)
ribosome
done
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D)
vacuole
done
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question_answer 106) Cell wall present in water conducting tissues, represented by swollen nodules is known as
A)
tertiary wall
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B)
middle lamella
done
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C)
plasmalemma
done
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D)
primary cell wall
done
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question_answer 107) Grana is ill developed or absent in the chloroplast in the
A)
stem of Hydrilla
done
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B)
leaf of sunflower
done
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C)
bundle sheath of sugarcane leaf
done
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D)
mesophyll of grasses
done
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question_answer 108) A straight fertilizer is the one, which is
A)
absorbed by roots directly
done
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B)
absorbed by the plants from aerial spray
done
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C)
having only one primary nutrient
done
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D)
not easily leached
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question_answer 109) Pollenkit material is secreted by
A)
tapetum
done
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B)
endothecium
done
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C)
epidermis
done
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D)
endodermis
done
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question_answer 110) In certain plant species red flower colour is incompletely dominant to white flower colour (the heterozygote is pink) and tall stems are completely dominant to dwarf stem. If a tall pink plant (TtRr) is crossed with a tall white plant (TTrr), which one of the following type of plants would be produced in the offsprings?
A)
Tall pink and tall white
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B)
Dwarf pink and tall red
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C)
Dwarf red and tall pink
done
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D)
Tall pink and dwarf white
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question_answer 111) Growth rings are absent or not sharply demarcated in the trees of
A)
temperate deciduous
done
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B)
tropical evergreen
done
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C)
temperate evergreen
done
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D)
tropical deciduous
done
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question_answer 112) An example of naturally occurring parthenocarpic fruit is
A)
apple
done
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B)
mango
done
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C)
banana
done
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D)
guava
done
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question_answer 113) Water stomata are found in
A)
plants lacking normal stomata
done
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B)
plants inhabiting dry regions
done
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C)
plants inhabiting humid region
done
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D)
all plants
done
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question_answer 114) Polygenic concept of inheritance was first experimentally shown by
A)
Malthus (1828)
done
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B)
Gabon (1883)
done
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C)
Nilson Ehle
done
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D)
None of the above
done
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question_answer 115) If a starving plant is provided with glucose, the rate of respiration would
A)
first rise than fall
done
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B)
become constant
done
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C)
decrease
done
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D)
increase
done
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question_answer 116) Meiosis in Dryopteris takes place at the time of
A)
gamete formation
done
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B)
spore formation
done
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C)
formation of sex organs
done
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D)
endosperm formation
done
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question_answer 117) First seed plant appeared during which you
A)
Silurian
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B)
Devonian
done
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C)
Carboniferous
done
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D)
Cretaceous
done
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question_answer 118) Selaginella does not show
A)
protostele
done
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B)
microphyllous leaves
done
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C)
precocious germination
done
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D)
circinate venation
done
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question_answer 119) Calcium encrustation and larvicidal properties are present in
A)
Chara
done
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B)
Oscillatoria
done
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C)
Diatoms
done
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D)
Caulerapa
done
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question_answer 120) In Spirogyra
A)
filaments, in which lateral conjugation occur are homothallic
done
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B)
filaments, in which sclariform conjugation occur are homothallic
done
clear
C)
filaments, in which lateral conjugation occur are heterothallic
done
clear
D)
a sexual reproduction occur by zoospores
done
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question_answer 121) Formation, growth and development of a new individual from egg is known as
A)
Embryology
done
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B)
Genetics
done
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C)
Ethnobotany
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D)
Cytology
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question_answer 122) Which type of moss is Funaria?
A)
Acrocarpous moss
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B)
Pleurocarpous moss
done
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C)
Anacrogynous moss
done
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D)
Cleistocarpous moss
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question_answer 123) Fin Funaria, the haploid structure is
A)
protonema
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B)
capsule
done
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C)
columella
done
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D)
seta
done
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question_answer 124) The lacunae in vascular bundle of monocot stem is
A)
a mucilage canal
done
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B)
a large sized vessel
done
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C)
lysigenous water cavity
done
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D)
metaxylem
done
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question_answer 125) Secondary phloem remains functional generally
A)
for one year
done
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B)
for less than one year
done
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C)
for many years
done
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D)
as long as plant is alive
done
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question_answer 126) Tubulin protein occurs in
A)
digestive enzymes
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B)
rough endoplasmic reticulum
done
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C)
thylakoids
done
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D)
microtubules
done
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question_answer 127) While preparing sauce, chatni and jams, these should not be heated in iron containers because
A)
acid reacts with iron to give black colour
done
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B)
makes edible material poisonous
done
clear
C)
takes a longer time to ripe
done
clear
D)
edible material becomes rusty
done
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question_answer 128) The lentic ecosystem includes
A)
gravitational water
done
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B)
standing water
done
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C)
rainwater
done
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D)
running water
done
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question_answer 129) Light reaction takes place in
A)
grana
done
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B)
endoplasmic reticulum
done
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C)
stroma
done
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D)
mitochondria
done
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question_answer 130) Which part of root absorbs both water and minerals?
A)
Zone of cell differentiation
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B)
Zone of cell formation
done
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C)
Zone of cell elongation
done
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D)
Terminal portion of roots
done
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question_answer 131) Pneumatophores are helpful in
A)
protein synthesis
done
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B)
respiration
done
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C)
carbohydrate metabolism
done
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D)
transpiration
done
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question_answer 132) The osmotic parameter determining the flow of water from one cell to another is
A)
OP
done
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B)
DPD
done
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C)
TP
done
clear
D)
Hydrostatic pressure
done
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question_answer 133) \[C{{O}_{2}}\]acceptor in \[{{C}_{4}}\]plant is
A)
PGA
done
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B)
Oxalo acetic add
done
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C)
RuDP
done
clear
D)
PEP
done
clear
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question_answer 134) Which of the following movements is induced by injury?
A)
Aerotropism
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B)
Geotropism
done
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C)
Tromonasty
done
clear
D)
Traumatropism
done
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question_answer 135) In Desmodium gyrans when environmental conditions are favourable
A)
lateral leaflet remains static and middle one oscillate
done
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B)
middle leaflet remains static and lateral oscillate simultaneously
done
clear
C)
middle leaflet remains static and lateral oscillate alternately
done
clear
D)
all three leaves oscillate
done
clear
View Answer play_arrow
question_answer 136) Which of the following is called stinging nettle?
A)
Utricaurens
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B)
Adhatoda
done
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C)
Verbascum
done
clear
D)
None of these
done
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question_answer 137) In big cities, the major atmospheric pollutant is
A)
carbon monoxide and oxides of sulphur
done
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B)
hydrocarbon and hot air
done
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C)
pollens and marsh gas
done
clear
D)
ozone
done
clear
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question_answer 138) Substance related with phototropism in shoot is
A)
ethanol
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B)
cytokinins
done
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C)
auxin
done
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D)
gibberellins
done
clear
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question_answer 139) The structural genes in the lac operon serially comprise
A)
y, a and z cistrons
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B)
a, y and z cistrons
done
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C)
z, a and y cistrons
done
clear
D)
z, y and a cistrons
done
clear
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question_answer 140) Phytoplanktons are
A)
insectivorous
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B)
chemotrophs
done
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C)
heterotrophs
done
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D)
autotrophs
done
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question_answer 141) Which of the following combines irreversibly with blood haemoglobin?
A)
\[S{{O}_{2}}\]
done
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B)
\[~{{O}_{3}}\]
done
clear
C)
\[CO\]
done
clear
D)
\[C{{O}_{2}}\]
done
clear
View Answer play_arrow
question_answer 142) Sugarcane is cultivated through
A)
stem cutting
done
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B)
root cutting
done
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C)
true seed
done
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D)
adventitious roots
done
clear
View Answer play_arrow
question_answer 143) What will happen if the supply of oxygen is decreased to an illuminated wheat plant?
A)
Its photosynthesis would decrease
done
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B)
Its respiration process would stop
done
clear
C)
All physiological process would stop
done
clear
D)
Its photosynthesis would increase
done
clear
View Answer play_arrow
question_answer 144) Assimilatory power in photosynthesis refers to
A)
\[ATP+NADP{{H}_{2}}+C{{O}_{2}}\]
done
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B)
\[ATP+NADP{{H}_{2}}\]
done
clear
C)
\[ATP\]
done
clear
D)
\[NADP{{H}_{2}}\]
done
clear
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question_answer 145) Richest source of protein is
A)
rice
done
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B)
gram
done
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C)
wheat
done
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D)
Glycine max
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question_answer 146) In cyanophage, the genetic material is
A)
RNA
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B)
DNA
done
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C)
Both (a) and (b)
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D)
protein
done
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question_answer 147) Maximum utilization of biotechnological techniques has been made in the field of
A)
industries
done
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B)
medicines
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C)
agriculture
done
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D)
biogas production
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question_answer 148) A small aquatic plant was put in each of the petri dishes ? X, Y and Z, containing different culture solutions. After six weeks the plant in dish X has the same number of leaves as it has previously and were all small and yellowish. Plant in dish Y had more leaves of normal size and dark green colour. Plants in dish Z had more leaves of normal size but very pale. Which of the following shows the element missing in the culture?
A)
X
Y
Z
Magnesium
Phosphorus
Nitrogen
done
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B)
X
Y
Z
Phosphorus
Magnesium
Nitrogen
done
clear
C)
X
Y
Z
Phosphorus
Nitrogen
Magnesium
done
clear
D)
X
Y
Z
Magnesium
Nitrogen
Phosphorus
done
clear
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question_answer 149) Restriction enzyme was discovered by
A)
Alexander Flemming
done
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B)
Waksman
done
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C)
Berg
done
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D)
Smith, Nathans and Arber
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question_answer 150) The green colored pigment present in all autotrophs was named chlorophyll by
A)
Pelletier and Caventou
done
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B)
Julius Rober Mayer
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C)
Jean Senebier
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D)
Malvin Calvin
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question_answer 151) Cellulose is made up of
A)
branched chain of glucose molecules linked by \[\alpha \] -1, 4 glycosidic bond in straight chain and \[\alpha \] - 1, 6 glycosidic bond at the site of branching
done
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B)
branched chain of glucose molecules linked by \[\alpha \] - 1, 6 glycosidic bond straight chain and \[\alpha \] - 1, 4 glycosidic box at the site of branching
done
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C)
unbranched chain of glucose molecules linked by\[\beta \]- 1, 4 glycosidic bond
done
clear
D)
unbranched chain of glucose molecules linked by\[\alpha \]- 1, 6 glycosidic bond
done
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question_answer 152) Cell Adhesion and cell recognition occur due to biochemicals of cell membrane named
A)
lipids
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B)
proteins
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C)
glycoproteins and glycolipids
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D)
proteins and lipids
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question_answer 153) Sol-gel theory, for the first time given by
A)
Pantin
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B)
Hyman
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C)
Best
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D)
Mast
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question_answer 154) The concept of genus was proposed by
A)
John Ray
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B)
Tournefort
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C)
Hooker
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D)
Bessey
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question_answer 155) In Hydra, the beaded processes of sensory cells make synapsis with the process of
A)
nerve cell
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B)
epithelio muscular cell
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C)
Both (a) and (b)
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D)
None of the above
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question_answer 156) Sperms in Ascaris are characterized by one unusual feature
A)
long form
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B)
lack of flagellum
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C)
motility
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D)
ability to induce meiosis in egg
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question_answer 157) Ascaris has
A)
paired testes and single ovary
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B)
paired ovary and single testes
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C)
single ovary and single testes
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D)
paired ovary and paired testes
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question_answer 158) Which of the following is not a characteristic of snakes?
A)
Eggs
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B)
Sternum
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C)
Scales
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D)
Kidney
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question_answer 159) Dudhwa national park is in
A)
Orissa
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B)
Gujarat
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C)
Uttar Pradesh
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D)
Himachal Pradesh
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question_answer 160) Leydig cells are concerned with
A)
ovary
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B)
seminiferous tubules
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C)
liver
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D)
pituitary
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question_answer 161) Scientific name of starfish is
A)
Echinus
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B)
Limulus
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C)
Echidna
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D)
Asterias
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question_answer 162) Pulse can be detected from the artery of
A)
wrist
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B)
thigh
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C)
diaphragm
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D)
humerus
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question_answer 163) Cranium is the protective covering of
A)
lungs
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B)
eye balls
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C)
brain
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D)
uterus
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question_answer 164) Immediate energy source for muscle contraction is
A)
ATP
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B)
ADP
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C)
glucose
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D)
lactic acid
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question_answer 165) Genetic engineering is employed to produce vaccines for
A)
herpes virus
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B)
hepatitis - B
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C)
Both (a) and (b)
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D)
None of the above
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question_answer 166) Triazines are derived from
A)
uric acid
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B)
urea
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C)
ammonia
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D)
None of these
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question_answer 167) Kappa particles are
A)
protozoan parasites whose multiplication is controlled by host metabolites
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B)
viral particles capable of self perpetuation in host cytoplasm
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C)
endosymbiont representing Gram negative bacterial species
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D)
submicroscopic granules formed by the folding of naked DNA
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question_answer 168) According to Neo- Darwinism new species develops through
A)
mutation
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B)
hybridization
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C)
continuous variation with natural selection
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D)
mutation with natural selection
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question_answer 169) Amniocentesis is
A)
process to know about brain disease
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B)
process to determine disease of heart
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C)
process to determine hereditary disease in the embryo
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D)
process to determine amount of amino adds
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question_answer 170) Plant viruses contain
A)
DNA
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B)
RNA
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C)
Both (a) and (b)
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D)
Plasmids
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question_answer 171) The spindle microtubules are polar, their orientation is
A)
+ and - both ends towards the equator
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B)
+ end towards the poles
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C)
- ends towards the poles
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D)
+ and - both ends towards the poles
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question_answer 172) Go phase is
A)
phase after \[{{G}_{2}}\]
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B)
phase after M phase, in which daughter cell enters new cell cycle
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C)
arrest of cell cycle on the onset of differentiation
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D)
All of the above
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question_answer 173) Mouth develops first in the embryo and anus is formed later. It is called
A)
protostomatic
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B)
deuterostomatic
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C)
Both (a) and (b)
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D)
None of the above
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question_answer 174) In Leucosolenia, gametes develop from
A)
amoebocytes
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B)
archaeocytes
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C)
choanocytes
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D)
myocytes
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question_answer 175) The largest of cnidoblast is
A)
penetrant
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B)
streptoline
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C)
volvent
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D)
small glutiant
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question_answer 176) Which of the following sets of derivatives of integumentary structures characterise birds as glorified reptiles?
A)
Scales and claws
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B)
Syrinx and uropygial gland
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C)
Claws and uropygial gland
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D)
Syrinx and scales
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question_answer 177) Which of the following generally modifies into glands?
A)
Muscular tissue
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B)
Nervous tissue
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C)
Connective tissue
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D)
Epithelial tissue
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question_answer 178) Myelinated nerve fibres are white colored because of
A)
chromidial substance
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B)
neurolemma
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C)
myelin
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D)
None of the above
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question_answer 179) Least peristalsis occurs in
A)
rectum
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B)
stomach
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C)
oesophagus
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D)
duodenum
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question_answer 180) Non- participation of male pronucleus in fertilization is
A)
androgenesis
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B)
polyandry
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C)
gynogenesis
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D)
polygyny
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question_answer 181) When the balloon of nitre -aortic balloon pump inflates more blood is carried to
A)
coronary artery
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B)
pulmonary trunk
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C)
hepatic portal
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D)
pulmonary arteries
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question_answer 182) Salamander can regenerate
A)
tail
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B)
limbs
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C)
external gills
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D)
All of these
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question_answer 183) In Omithine cycle, the enzyme arginase breaks down arginine into
A)
citrulline and ammonia
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B)
citrulline and urea
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C)
Omithine and ammonia
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D)
Omithine and urea
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question_answer 184) Parkinsonism, which is characterized by tremors and progressive rigidity of limbs is caused by degeneration of brain, neurons and neuro transmitters called
A)
dopamine
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B)
adrenaline
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C)
acetyl choline
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D)
aspartic acid
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question_answer 185) Yellow spot of eye is known for
A)
complex blood vascular system
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B)
high pigmentation
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C)
preponderance of cones
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D)
possession of abundant rods
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question_answer 186) Latissimus dorsi muscles are
A)
muscles of fore arm
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B)
muscles of lower jaw
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C)
muscles of chest
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D)
muscles of shoulder
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question_answer 187) Zygomatic process in mammals arises from
A)
mandible
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B)
maxilla
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C)
premaxilla
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D)
squamosal
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question_answer 188) Eunuchoidism is due to the faliure of production of
A)
FSH
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B)
testosterone
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C)
ICSH
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D)
estrogen
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question_answer 189) Which of the following stimulates production of gastric juice?
A)
Enterogasteron
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B)
Secretin
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C)
Gastrin
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D)
Enterokinase
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question_answer 190) First milk produced after child birth is called
A)
sebum
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B)
cerumen
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C)
true milk
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D)
colostrums
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question_answer 191) Embryologist can draw the fate maps of fur-I organs of embryo in
A)
blastula
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B)
morula
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C)
early gastrula
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D)
late gastrula
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question_answer 192) Blastopore is found in
A)
blastula and is opening of archenteror
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B)
blastula and is opening of blastocoel
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C)
gastrula and is opening of archenteroc
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D)
gastrula and is opening of blastocoels
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question_answer 193) Alleles of different genes that on the same chromosome may occasionally be separated by a phenomenon known as
A)
pleiotropy
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B)
epistatis
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C)
continuous variation
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D)
crossing over
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question_answer 194) Gene with multiple effect is
A)
supplementary
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B)
pleiotropic
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C)
epistatic
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D)
codominant
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question_answer 195) Name of first one toed horse is
A)
Mesohippus
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B)
Eohippus
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C)
Pliohippus
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D)
None of these
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question_answer 196) For evolution most important requirement is
A)
continuity of germplasm
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B)
variation
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C)
adaptation of acquired traits
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D)
natural selection
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question_answer 197) The part of Papaver soniniferum, from which opium is obtained
A)
seed
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B)
stem and leaf
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C)
unripe fruits
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D)
mature fruits
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question_answer 198) Transgenic crops are modified through genetic engineering to develop natural resistance to insect pests. Which one is a transgenic plant?
A)
Tomato and wheat
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B)
Tomato and rice
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C)
Tobacco and tomato
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D)
Maize and sugarcane
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question_answer 199) Foetal abnormalities are caused by
A)
LSD
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B)
opium
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C)
nicotine
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D)
alcohol
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question_answer 200) Hybridoma is a bio-technique which involves fusion of
A)
B-cells and T-cells
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B)
T-cells and spleen cells
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C)
spleen cells and myeloma
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D)
myeloma cell and B-cells
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