question_answer 1) A closed coil is made of a wire of length L and a current i ampere is flowing in it. If the plane of coil is perpendicular to magnetic field B. The force on the coil is
A)
zero
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B)
iBL
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C)
2iBL
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D)
\[[ML{{T}^{-2}}]\]
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question_answer 2) The earths magnetic field at a certain place has a horizontal component 0.3 gauss and the total strength 0.5 gauss. The angle of dip is
A)
\[[M{{L}^{2}}{{T}^{-2}}]\]
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B)
\[\frac{3aT}{2}\]
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C)
\[\frac{aT}{2}\]
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D)
\[\frac{aT}{4}\]
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question_answer 3) An alternating current is given by \[aT\] The rms current is given by
A)
(a\[{{s}^{2}}\]
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B)
\[y=8t-5{{t}^{2}}\]
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C)
\[\frac{2}{5}M{{R}^{2}}\]
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D)
\[\frac{3}{5}M{{R}^{2}}\]
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question_answer 4) A resistance R, inductance L and capack or C are connected in series to an oscillator of frequency\[\frac{3}{2}M{{R}^{2}}\]. If resonant frequency is \[\frac{5}{2}M{{R}^{2}}\],. then current will ag the voltage when
A)
\[5.26\times {{10}^{3}}\]=0
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B)
\[({{R}_{e}}=6.37\times {{10}^{6}}m)\]
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C)
\[mg{{R}_{e}}\,.\]
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D)
\[{{R}_{e}}\]
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question_answer 5) The difference between soft and hard X-rays is of
A)
velocity
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B)
intensity
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C)
frequency
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D)
polarization
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question_answer 6) The ratio of the speed of the electron is the first orbit of hydrogen and the speed of light c is equal to (where e and h have their usual meanings)
A)
\[{{R}_{e}}\]
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B)
\[-2mg{{R}_{e}}\]
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C)
\[2mg{{R}_{e}}\]
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D)
\[1\frac{1}{2}mg{{R}_{e}}\]
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question_answer 7) \[-\frac{1}{2}mg{{R}_{e}}\]= 1.0087 amu, \[{{\alpha }_{1\,}}and\,{{\beta }_{2}}\] = 1.0073 amu\[{{Y}_{1\,}}and\,{{Y}_{2}}\] =4.0015 amu, (1 amu =931 MeV)I Binding energy of the helium nucleus is
A)
28.4 MeV
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B)
20.8 MeV
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C)
27-3 MeV
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D)
14.2 MeV
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question_answer 8) In a p-n junction diode, the reverse saturation current is \[\frac{{{\alpha }_{1}}}{{{\alpha }_{2}}}=\frac{2}{3}\]A at 27°C. The forward current for a voltage 0.2 V is \[\frac{{{Y}_{1}}}{{{Y}_{2}}}\]
A)
\[{{v}_{H}},{{v}_{N}}\,and\,{{v}_{o}}\]
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B)
\[{{v}_{H}}>{{v}_{N}}>{{v}_{o}}\]
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C)
\[{{v}_{o}}>,{{v}_{N}}\,=\,{{v}_{H}}\]
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D)
\[{{v}_{o}}>,{{v}_{H}}\,=\,{{v}_{N}}\]
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question_answer 9)
The equivalent capacitance between points A and B in the figure is 1 \[{{v}_{N}}>,{{v}_{o}}\,=\,{{v}_{H}}\], then value of C is
A)
1.4\[=1.013\times {{10}^{5}}N/{{m}^{2}}\]
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B)
2.5\[\overset{0}{\mathop{A}}\,\]
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C)
3.5\[\overset{0}{\mathop{A}}\,\]
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D)
1.2\[\overset{0}{\mathop{A}}\,\]
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question_answer 10) The plates of a capacitor are charged to a potential difference of 320 V and are then connected across a resistor. The potential difference across the capacitor decays exponentially with time. After Is the potential difference between the plates of the capacitor is240 V, then after 2 and 3 s the potential difference between the plates will be
A)
200 and 180 V
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B)
180 and 135 V
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C)
160 and 80 V
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D)
140 and 20 V
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question_answer 11) The electric field at a point on equatorial line of a dipole, and direction of the dipole moment
A)
will be parallel
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B)
will be antiparallel
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C)
will be perpendicular
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D)
are not related
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question_answer 12) The unit of magnetic moment is
A)
ampere/metre2
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B)
newton/ampere-metre
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C)
newton-metre
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D)
ampere-metre2
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question_answer 13) The dimensions of shearing stress are
A)
\[\overset{0}{\mathop{A}}\,\]
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B)
\[\overset{0}{\mathop{A}}\,\]
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C)
\[y=5\sin \frac{\pi x}{3}\cos 40\pi t\]
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D)
\[5\times {{10}^{14}}\]
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question_answer 14) A car starts from rest and moves with uniform acceleration a on a straight road from time t= 0to t =T. After that, a constant deceleration brings it to rest. In this process, the average speed of the car will be
A)
\[\overset{0}{\mathop{A}}\,\]
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B)
\[\overset{0}{\mathop{A}}\,\]
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C)
\[\overset{0}{\mathop{A}}\,\]
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D)
\[\overset{0}{\mathop{A}}\,\]
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question_answer 15) A ball thrown vertically upwards reaches its maximum height h in time T. At time T/2, its height will be
A)
h/4
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B)
h/2
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C)
7h/8
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D)
3h/4
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question_answer 16) A bullet is fired with a speed of 1000 m/s in order to hit a target 100 m away. The gun should be aimed at (g = 10 m/\[\mu \])
A)
directly towards the target
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B)
5 cm above the target
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C)
10 cm above the target
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D)
15 cm above the target
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question_answer 17) For a projectile on the horizontal surface of a planet \[d\frac{20}{3}\]m shows height and x = 6tm shows the horizontal distance, then the velocity with which the projectile is projected is
A)
8 m/s
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B)
6 m/s
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C)
10 m/s
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D)
100 m/s
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question_answer 18) In an elastic collision of two particles which of the following is conserved?
A)
Momentum of each particle
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B)
Speed of each particle
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C)
Kinetic energy of each particle
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D)
Total kinetic energy of both the particles
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question_answer 19)
Two blocks A and B are arranged as shown in the figure. The pulley is frictionless. The mass of A is 10 kg. The coefficient of friction of A with the horizontal surface is 0.20. To stan the motion the minimum mass of B is
A)
2 kg
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B)
0.2 kg
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C)
5 kg
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D)
10 kg
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question_answer 20) A particle of mass m moving with velocity vcollides elastically with another particle of samemas s which is in rest, velocity of first panicle after collision
A)
v
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B)
-v
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C)
-2v
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D)
zero
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question_answer 21) The susceptibility is positive for
A)
ferromagnetic substance
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B)
diamagnetic substance
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C)
paramagnetic substance
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D)
non magnetic substance
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question_answer 22) On hanging a mass of 1 kg from a spring of50 cm length, its length increases by 2 cm. The mass is pulled down until the length of the spring becomes 60 cm. Then energy stored in the spring in this condition is
A)
1.5 J
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B)
2.0 J
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C)
2.5 J
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D)
3 J
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question_answer 23) The moment of inertia of a solid cylinder of mass M and radius R about a line parallel to the axis of the cylinder and lying on the surface of the cylinder is
A)
\[\theta \]
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B)
\[i\alpha \tan \theta \]
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C)
\[i\alpha \theta \]
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D)
\[i\alpha {{\theta }^{2}}\]
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question_answer 24) A particle is making uniform circular motion with angular momentum J. If its kinetic energy is made half and angular frequency be doubled, its new angular momentum will be
A)
2 J
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B)
4 J
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C)
J/2
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D)
J/4
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question_answer 25) A satellite is moving in a circular orbit at acerta in height above the earths surface. It takes\[i\alpha \sqrt{\theta }\] s to complete one revolution with acentric petal acceleration equal to 9.32 m/s2, the height of the satellites orbit above the earths surface is \[\gamma \]
A)
70km
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B)
120km
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C)
170 km
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D)
220 km
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question_answer 26) The gravitational potential energy of a body of mass m at the earths surface is (-)\[\beta \] Its gravitational potential energy at a height \[\alpha \]from the earths surface will be (Here \[{{H}_{2}}\] is the radius of the earth)
A)
\[{{O}_{2}}\]
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B)
\[F=i(i\times B)=0\]
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C)
\[\tan \theta =\frac{V}{H}\]
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D)
\[\frac{1}{2}iBL\]
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question_answer 27) If \[<T>\] and \[<V>\] denote the average kinetic and the average potential energies respectively of a mass executing a simple harmonic motion, over one period, then the correct relation is
A)
\[<T>=-2<U>\]
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B)
\[<T>=2<U>\]
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C)
\[<T>=<U>\]
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D)
\[<U>=2<T>\]
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question_answer 28) The length of a simple pendulum is increased by 44%. What is the percentage increase in its time period?
A)
10%
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B)
20%
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C)
40%
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D)
44%
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question_answer 29) A wire of length 2 m is made from \[10\text{ }c{{m}^{3}}\] of copper. A force F is applied, so that its length in creases by 2 mm. Another wire of length 8 m is made from the same volume of copper. If the force F is applied to it, its length will increase by
A)
0.8cm
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B)
1.6cm
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C)
2.4 cm
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D)
3.2 cm
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question_answer 30) Two rods of different materials having coefficients of thermal expansions \[{{\tan }^{-1}}\left( \frac{3}{4} \right)\] Youngs moduli \[{{\tan }^{-1}}\left( \frac{4}{5} \right)\] respectively are fixed between two rigid walls. The rods are heated such that they undergo the same increase in temperature. There is no bending of rods. If \[{{\tan }^{-1}}\left( \frac{4}{3} \right)\] and stresses developed in the two rods are equal, then \[{{\sin }^{-1}}\left( \frac{3}{5} \right)\] is
A)
3/2
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B)
1
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C)
2/3
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D)
½
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question_answer 31) A capillary tube, made of glass, is dipped in to mercury. Then
A)
mercury rises in the capillary tube
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B)
mercury rises and flows out of the capillary tube
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C)
mercury descends in the capillary tube
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D)
mercury neither rises nor descends in the capillary tube
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question_answer 32) Air is filled at \[60{}^\circ C\] in a vessel of open mouth. The vessel is heated to a temperature T, so that1/4 th part of air escapes. The value of T is
A)
\[80{}^\circ C\]
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B)
\[444{}^\circ C\]
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C)
\[333{}^\circ C\]
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D)
\[171{}^\circ C\]
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question_answer 33) If\[I={{I}_{1}}\cos \,\omega t+{{I}_{2}}\sin \omega t\] denote the root mean square velocities of molecules of hydrogen, nitrogen and oxygen respectively at a given temperature then
A)
\[\frac{1}{\sqrt{2}}({{I}_{1}}+{{I}_{2}})\]
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B)
\[\frac{1}{\sqrt{2}}{{({{I}_{1}}+{{I}_{2}})}^{2}}\]
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C)
\[\frac{1}{\sqrt{2}}{{(I_{1}^{2}+I_{2}^{2})}^{1/2}}\]
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D)
\[\frac{1}{2}{{(I_{1}^{2}+I_{2}^{2})}^{1/2}}\]
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question_answer 34) \[1c{{m}^{3}}\] of water at its boiling point absorbs 540 cal of heat to become steam with a volume of \[1671\text{ }c{{m}^{3}}.\]If the atmospheric pressure\[f\]and the mechanical equivalent of heat = 4.2 J/cal, the energy spent in this process in overcoming inter molecular forces is
A)
540 cal
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B)
40 cal
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C)
500 cal
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D)
zero
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question_answer 35) The mechanical equivalent of heat J is
A)
constant
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B)
a physical quantity
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C)
a conversion factor
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D)
None of the above
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question_answer 36) A body takes T minutes to cool from \[62{}^\circ C\] to \[61{}^\circ C\] when the surrounding temperature is \[30{}^\circ C\]. The time taken by the body to cool from \[46{}^\circ C\] to \[45.5{}^\circ C\] is
A)
greater than T minutes
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B)
equal to T minutes
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C)
less than T minutes
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D)
equal to T/2 minutes
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question_answer 37) Which of the following makes the best choice for cooking utensils?
A)
High specific heat and high conductivity
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B)
Low specific heat and low conductivity
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C)
High specific heat and low conductivity
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D)
Low specific heat and high conductivity
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question_answer 38) A star emitting light of wavelength 5896\[f\] is moving away from the earth with a speed of 3600 km/s. The wavelength of light observe don earth will
A)
decrease by 5825.25 \[f\]
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B)
increase by 5966.75 \[f<{{f}_{r}}\]
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C)
decrease by 70.75 \[f={{f}_{r}}\]
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D)
increase by 70.75 \[f>{{f}_{r}}\]
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question_answer 39) A stretched string is vibrating according to the equation \[\frac{2\pi hc}{{{e}^{2}}}\]where y and x are in cm and t in second. The distance between two consecutive nodes on the siring is
A)
5 cm
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B)
4 cm
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C)
3 cm
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D)
2 cm
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question_answer 40) Monochromatic light of frequency \[\frac{{{e}^{2}}h}{2\pi c}\]Hz travelling in vacuum enters a medium of refractive index 1.5. Its wavelength in the medium is
A)
4000 \[\frac{{{e}^{2}}h}{2\pi h}\]
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B)
5000 \[\frac{2\pi {{e}^{2}}}{hc}\]
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C)
6000 \[{{M}_{neutron}}\]
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D)
5500 \[{{M}_{proton}}\]
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question_answer 41) A double convex thin lens made of glass(refractive index, \[{{M}_{\alpha }}\]=1.5) has both radii of curvature of magnitude 20 cm. Incident lightrays parallel to the axis of the lens will converge at a distance d cm such that
A)
d = 10
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B)
\[{{10}^{-5}}\]
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C)
d = 40
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D)
d = 20
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question_answer 42)
The displacement-time curves of two objects A and B are shown in the figure, then
A)
the graph does not give information
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B)
both A and B have same velocity
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C)
the velocity of A is greater than B
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D)
the velocity of A is less than that of B
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question_answer 43) The disc of siren has n holes and the frequency of its rotation is 300 rev/m. It produces a note of wavelength 2.4 m. When the velocity of sound in air is 360 m/s. The value of n is
A)
24
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B)
36
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C)
5
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D)
30
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question_answer 44) In a moving coil galvanometer, the deflection of the coil \[[\exp (7.62)=2038.6,k=1.4\times {{10}^{-24}}J/k]\] is related to the electric current i by the relation
A)
\[2037.6\times {{10}^{-3}}A\]
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B)
\[203.76\times {{10}^{-3}}A\]
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C)
\[20.376\times {{10}^{-3}}A\]
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D)
\[2.0376\times {{10}^{-3}}A\]
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question_answer 45) An electron moving in a variable magnetic field B, having a variable linear velocity v, will remain rotating in a circle of constant radius r only, when
A)
B is held constant
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B)
v is held constant
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C)
v and B both are held constants
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D)
angular velocity is constant
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question_answer 46) Focal length of a convex lens will be maximum for
A)
red light
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B)
yellow light
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C)
green light
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D)
blue light
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question_answer 47) Diode is used as a/an
A)
modulator
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B)
oscillator
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C)
amplifier
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D)
rectifier
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question_answer 48) The charge on an electron was discovered by
A)
Milik an
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B)
J.J. Thomson
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C)
Chand wick
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D)
Neils Bohr
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question_answer 49) Which of the following radiation form the part of electromagnetic spectrum?
A)
\[\mu F\]-rays
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B)
cathode rays
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C)
\[\mu F\]-rays
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D)
\[\mu F\]-rays
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question_answer 50) A closed bottle containing water is opened of the moon. What will happen?
A)
The water will remain as before
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B)
the water will decomposes into \[\mu F\]and\[\mu F\]
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C)
The water will freeze
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D)
The water will boil
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question_answer 51) The nuclear reaction,\[_{2}H{{e}^{4}}{{+}_{7}}{{N}^{14}}{{\xrightarrow{{}}}_{8}}{{O}^{17}}{{+}_{1}}{{H}^{1}}\]is represented as
A)
\[_{7}{{N}^{14}}{{(p,\alpha )}_{8}}{{O}^{17}}\]
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B)
\[_{8}{{O}^{17}}{{(\alpha ,p)}_{7}}{{N}^{14}}\]
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C)
\[_{7}{{O}^{14}}{{(\alpha ,p)}_{8}}{{O}^{17}}\]
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D)
\[_{8}{{O}^{17}}{{(p,\alpha )}_{7}}{{N}^{14}}\]
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question_answer 52) In term of energy 1 u is equal to
A)
\[100J\]
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B)
\[931.5MeV\]
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C)
\[931.5\text{ }kcal\]
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D)
\[10ergs\]
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question_answer 53) In what manner will increase of pressure affect the following equation? \[C(s)+{{H}_{2}}O(g)CO(g)+{{H}_{2}}O(g)\]
A)
Shift in the forward direction
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B)
Shift in the reverse direction
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C)
Increase in the yield of hydrogen
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D)
No effect
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question_answer 54) The best method for the purification of carbonyl compounds is
A)
steam distillation
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B)
hydrolysis of sodium bisulphite adduct
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C)
fractional distillation
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D)
sublimation
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question_answer 55) Lanthanide for which \[+II\] and \[+III\] oxidation states are common, is
A)
\[La\]
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B)
\[Nd\]
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C)
\[Ce\]
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D)
\[Eu\]
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question_answer 56) In the Periodic Table actinides occupy
A)
III B group in 7th row
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B)
III B group in 6th row
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C)
III B group in 5th row
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D)
None of the above
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question_answer 57) Among d-block elements, the most abundant elements belong to the
A)
first transition series
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B)
second transition series
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C)
third transition series
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D)
fourth transition series
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question_answer 58) Volume at NTP of 0.22 g of \[C{{O}_{2}}\] is same as that of
A)
0.01 g of hydrogen
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B)
0.085 g of \[N{{H}_{3}}\]
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C)
320 mg of gaseous \[S{{O}_{2}}\]
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D)
All of the above
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question_answer 59) The example (s) of antioxidant is/are
A)
DHT
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B)
BHA
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C)
to copherol
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D)
All of these
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question_answer 60) Westrosol is
A)
\[ClCH=CC{{l}_{2}}\]
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B)
\[C{{l}_{2}}C{{F}_{2}}\]
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C)
\[CHC{{l}_{2}}-CHC{{l}_{2}}\]
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D)
\[C{{l}_{3}}CN{{O}_{2}}\]
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question_answer 61) Wavelength of first line in Lyman series is \[\lambda \]. The wavelength of first line in Balmer series is
A)
\[\frac{5}{27}\lambda \]
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B)
\[\frac{36}{5}\lambda \]
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C)
\[\frac{27}{5}\lambda \]
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D)
\[\frac{5}{36}\lambda \]
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question_answer 62) Which of the following gas will have highest rate of diffusion?
A)
\[N{{H}_{3}}\]
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B)
\[{{N}_{2}}\]
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C)
\[C{{O}_{2}}\]
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D)
\[{{O}_{2}}\]
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question_answer 63) When \[C{{H}_{3}}MgBr\] reacts with \[{{C}_{2}}{{H}_{5}}OH\], the product is
A)
\[C{{H}_{4}}\]
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B)
\[{{C}_{2}}{{H}_{6}}\]
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C)
\[{{C}_{3}}{{H}_{8}}\]
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D)
\[{{C}_{4}}{{H}_{10}}\]
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question_answer 64) When \[{{F}_{2}}\] reacts with hot and concentrated alkali, the following will be obtained (i) \[O{{F}_{2}}\] (ii) \[{{O}_{2}}\] (iii) \[{{H}_{2}}O\] (iv) \[NaF\]
A)
(i), (iii) and (iv)
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B)
(ii), (iii) only
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C)
(ii), (iii) and (iv)
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D)
All of these
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question_answer 65) Root mean square velocity of a gas molecule is proportional to
A)
\[{{M}^{1/2}}\]
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B)
\[{{M}^{0}}\]
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C)
\[{{M}^{-1/2}}\]
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D)
\[M\]
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question_answer 66) Maximum energy is evolved during which of the following transitions?
A)
\[n=1\] to \[n=2\]
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B)
\[n=2\] to \[n=6\]
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C)
\[n=2\] to \[n=1\]
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D)
\[n=6\] to \[n=2\]
done
clear
View Answer play_arrow
question_answer 67) Which one of the following haloalkanes is used as fire extinguisher?
A)
\[CH{{I}_{3}}\]
done
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B)
\[CC{{l}_{4}}\]
done
clear
C)
\[CHB{{r}_{3}}\]
done
clear
D)
\[CHC{{l}_{3}}\]
done
clear
View Answer play_arrow
question_answer 68) The major product of the following reaction\[{{C}_{6}}{{H}_{5}}CH=CHC{{H}_{3}}\xrightarrow[(ii)\,NaB{{H}_{4}}]{(i)\,Hg\,{{(OAC)}_{2,}}THE-{{H}_{2}}O}\]is
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
question_answer 69) Glucose on oxidation gives the acid containing the chiral C-atoms equal to
A)
2
done
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B)
3
done
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C)
4
done
clear
D)
5
done
clear
View Answer play_arrow
question_answer 70) The main constituent of most natural fibres is
A)
starch
done
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B)
glycol
done
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C)
cellulose
done
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D)
caprolactum
done
clear
View Answer play_arrow
question_answer 71) In the preparation of amorphous silicon, HF is used to remove
A)
\[Mg\]
done
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B)
\[Si{{O}_{2}}\]
done
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C)
\[Si\]
done
clear
D)
None of these
done
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View Answer play_arrow
question_answer 72) Which of the following is isostructural with \[C{{O}_{2}}\]?
A)
\[{{N}_{2}}O\]
done
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B)
\[N{{O}_{2}}\]
done
clear
C)
\[{{N}_{2}}{{O}_{5}}\]
done
clear
D)
\[NO\]
done
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View Answer play_arrow
question_answer 73) \[{{H}^{+}}\] ion concentration of an aqueous solution of \[{{K}_{2}}S{{O}_{4}}\] would be
A)
\[{{10}^{-7}}\]
done
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B)
\[>{{10}^{-7}}\]
done
clear
C)
\[<{{10}^{-7}}\]
done
clear
D)
\[{{10}^{-14}}\]
done
clear
View Answer play_arrow
question_answer 74) The solubility of \[AgCl\] is \[1\times {{10}^{-5}}mol/L\], Its solubility in 0.1 molar sodium chloride solution is
A)
\[1\times {{10}^{-10}}\]
done
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B)
\[1\times {{10}^{-5}}\]
done
clear
C)
\[1\times {{10}^{-9}}\]
done
clear
D)
\[1\times {{10}^{-4}}\]
done
clear
View Answer play_arrow
question_answer 75) Ionic dissociation of acetic acid is represented as\[C{{H}_{3}}COOH+{{H}_{2}}O{{H}_{3}}{{O}^{+}}+C{{H}_{3}}CO{{O}^{-}}\] According to Lowry and Bronsted, the reaction possesses
A)
an acid and three bases
done
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B)
two acids and two bases
done
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C)
an acid and a base
done
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D)
three acids and a base
done
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View Answer play_arrow
question_answer 76) Which of the following are examples of pseudo unimolecular reaction? I. Inversion of cane sugar II. Decomposition of ozone III. Decomposition of \[{{N}_{2}}{{O}_{5}}\] IV Acid catalysed hydrolysis of easier
A)
II and IV
done
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B)
I and IV
done
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C)
I, II and IV
done
clear
D)
I, II, III and IV
done
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View Answer play_arrow
question_answer 77) \[2{{N}_{2}}{{O}_{5}}\xrightarrow{{}}4N{{O}_{2}}+{{O}_{2}}\]. The rate of reaction in terms of \[{{N}_{2}}{{O}_{5}}\] will be
A)
\[-\frac{d[{{N}_{2}}{{O}_{5}}]}{dt}\]
done
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B)
\[-\frac{1}{4}\frac{d[{{N}_{2}}{{O}_{5}}]}{dt}\]
done
clear
C)
\[-\frac{1}{2}\frac{d[{{N}_{2}}{{O}_{5}}]}{dt}\]
done
clear
D)
\[-\frac{1}{3}\frac{d[{{N}_{2}}{{O}_{5}}]}{dt}\]
done
clear
View Answer play_arrow
question_answer 78) The number of moles of solute per kg of solvent is called its
A)
normality
done
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B)
molarity
done
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C)
mole fraction
done
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D)
molality
done
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View Answer play_arrow
question_answer 79) N, N-dimethyl acetamide is obtained by the reaction of
A)
acetyl chloride and methanamine
done
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B)
acetyl chloride and ethanamine
done
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C)
acetyl chloride and dimethylamine
done
clear
D)
acetyl chloride and diethylamine
done
clear
View Answer play_arrow
question_answer 80) Fluorine molecule is formed by
A)
the axial p-p orbital overlap
done
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B)
the sideways p-p orbital overlap
done
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C)
the 5-5 orbital overlap
done
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D)
the 5-p orbital overlap
done
clear
View Answer play_arrow
question_answer 81) Alcoholic fermentation is completed by
A)
\[C{{O}_{2}}\]
done
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B)
\[{{O}_{2}}\]
done
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C)
ammonium salts
done
clear
D)
yeast
done
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View Answer play_arrow
question_answer 82) When zinc reacts with very dilute nitric acid, it produces
A)
\[NO\]
done
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B)
\[N{{H}_{4}}N{{O}_{3}}\]
done
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C)
\[N{{O}_{2}}\]
done
clear
D)
\[{{H}_{2}}\]
done
clear
View Answer play_arrow
question_answer 83) In thermodynamics, a process is called reversible when
A)
surroundings and system changes into each other
done
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B)
the surroundings are always in equilibrium with the system
done
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C)
there is no boundary between the system and surroundings
done
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D)
the system changes into surroundings spontaneously
done
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View Answer play_arrow
question_answer 84) The oxidation state of chromium in \[Cr{{(CO)}_{6}}\] is
A)
\[0\]
done
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B)
\[+2\]
done
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C)
\[-2\]
done
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D)
\[+6\]
done
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View Answer play_arrow
question_answer 85) The hydrolysis of 1 mole of chloroform requires
A)
1 mole of \[KOH\]
done
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B)
2 moles of \[KOH\]
done
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C)
3 moles of \[KOH\]
done
clear
D)
4 moles of \[KOH\]
done
clear
View Answer play_arrow
question_answer 86) 2-ethoxy propane can be obtained by heating ethyl bromide with
A)
sodium iso-propoxide
done
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B)
sodium n-propoxide
done
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C)
150-propyl bromide
done
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D)
n-propyl bromide
done
clear
View Answer play_arrow
question_answer 87) Melting of Zn metal and then, pouring it into cold water gives
A)
Zn dust
done
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B)
granulated Zn
done
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C)
hard Zn metal
done
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D)
soft Zn metal
done
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View Answer play_arrow
question_answer 88)
The products are
A)
\[{{C}_{6}}{{H}_{5}}I.C{{H}_{3}}OH\]
done
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B)
\[{{C}_{6}}{{H}_{5}}OH,C{{H}_{3}}I\]
done
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C)
Both (a) and (b)
done
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D)
None of these
done
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View Answer play_arrow
question_answer 89) A sodium cation has a different number of electrons from
A)
\[{{O}^{2-}}\]
done
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B)
\[{{F}^{-}}\]
done
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C)
\[L{{i}^{+}}\]
done
clear
D)
\[A{{l}^{3+}}\]
done
clear
View Answer play_arrow
question_answer 90) It th6 rate constant of a reaction is \[2\times {{10}^{-3}}{{s}^{-1}},\]What is the order of reaction?
A)
0
done
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B)
1
done
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C)
2
done
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D)
3
done
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View Answer play_arrow
question_answer 91) Carbohydrates are detected by
A)
Molisch test
done
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B)
carbylamine test
done
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C)
Baeyers test
done
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D)
haloform test
done
clear
View Answer play_arrow
question_answer 92) Compound responding to the properties of two functional groups, is
A)
\[HCOOH\]
done
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B)
\[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-OH\]
done
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C)
\[HCHO\]
done
clear
D)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
clear
View Answer play_arrow
question_answer 93) The organic compound that will answer the Fehling solution test is
A)
ethanol
done
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B)
acetone
done
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C)
maltose
done
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D)
benzaldehyde
done
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View Answer play_arrow
question_answer 94) If the heat of formation of \[C{{O}_{2}}\] is\[-393kJ\], the amount of heat evolved in the formation of \[0.176\text{ }kg\] of \[C{{O}_{2}}\] is
A)
\[-1357.9\text{ }kJ\]
done
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B)
\[-1275.9kJ\]
done
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C)
\[-1572kJ\]
done
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D)
\[+1572kJ\]
done
clear
View Answer play_arrow
question_answer 95) The addition of a polar solvent to a solid electrolyte results in the
A)
association
done
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B)
dissociation
done
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C)
polarisation
done
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D)
non-liberation
done
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View Answer play_arrow
question_answer 96) Which of the following is strongest acid?
A)
\[C{{H}_{3}}.C{{H}_{2}}COOH\]
done
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B)
\[C{{H}_{3}}COOH\]
done
clear
C)
\[C{{H}_{3}}.CHClCOOH\]
done
clear
D)
\[C{{H}_{3}}.C{{H}_{2}}.C{{H}_{2}}COOH\]
done
clear
View Answer play_arrow
question_answer 97) Catalytic hydrogenation of acetone oxime gives
A)
propanamine
done
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B)
150-propyl amine
done
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C)
ethyl methyl amine
done
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D)
\[C{{H}_{4}}\] and ethanamine
done
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View Answer play_arrow
question_answer 98) The hydrogen electrode is dipped in a solution of \[pH=3.0\]at \[{{25}^{o}}C\]. The potential of hydrogen electrode would be
A)
\[0.177V\]
done
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B)
\[-0.177V\]
done
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C)
\[0.087\text{ }V\]
done
clear
D)
\[0.059\text{ }V\]
done
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View Answer play_arrow
question_answer 99) In \[{{H}_{2}}-{{O}_{2}}\] fuel cell, the reaction occurring at cathode, is
A)
\[2{{H}_{2}}+{{O}_{2}}\xrightarrow{{}}2{{H}_{2}}O(l)\]
done
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B)
\[{{H}^{+}}+O{{H}^{-}}\xrightarrow{{}}{{H}_{2}}O\]
done
clear
C)
\[{{O}_{2}}+2{{H}_{2}}O+4{{e}^{-}}\xrightarrow{{}}4O{{H}^{-}}\]
done
clear
D)
\[{{H}^{+}}+{{e}^{-}}\xrightarrow{{}}\frac{1}{2}{{H}_{2}}\]
done
clear
View Answer play_arrow
question_answer 100) Which of the following compounds on oxidation gives an acid with less number of carbon atoms?
A)
\[C{{H}_{3}}CHO\]
done
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B)
\[C{{H}_{3}}C{{H}_{2}}OH\]
done
clear
C)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
clear
D)
\[HCHO\]
done
clear
View Answer play_arrow
question_answer 101) In the organism which show bioluminescence. chemical energy of cell is converted into
A)
Light energy
done
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B)
thermal energy
done
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C)
Radiant energy
done
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D)
mechanical energy
done
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View Answer play_arrow
question_answer 102) Which of the following disease is caused by virus?
A)
Polio
done
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B)
Typhoid
done
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C)
Tuberculosis
done
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D)
Diphtheria
done
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question_answer 103) The process of destroying all living organisms is called
A)
Sanitation
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B)
immunization
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C)
Sterilization
done
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D)
pasteurization
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View Answer play_arrow
question_answer 104) Origin of life was due to
A)
Will of God
done
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B)
Spontaneous generation
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C)
Effect of Sun rays on mud
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D)
None of the above
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View Answer play_arrow
question_answer 105) For natural selection, the important factor is
A)
Disuse
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B)
variation
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C)
Catastrophic
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D)
special creation
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question_answer 106) Which one is a new world monkey?
A)
Gorilla
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B)
Orang-ut an
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C)
Chimpanzee
done
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D)
Rhesus monkey
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View Answer play_arrow
question_answer 107) Which is most recent in human evolution?
A)
Neolithic
done
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B)
Mesolithic
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C)
Upper palaeolithic
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D)
Middle palaeolithic
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View Answer play_arrow
question_answer 108) Adjacent epithelial cells are held together by amass of
A)
liposomes
done
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B)
microsomes
done
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C)
desmosomes
done
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D)
glyoxysomes
done
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View Answer play_arrow
question_answer 109) Embryonic connective tissue is derived from
A)
ectodem
done
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B)
endoderm
done
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C)
mesogloea
done
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D)
mesenchyme
done
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View Answer play_arrow
question_answer 110) Gastrocnemius muscle is found attached in
A)
chest
done
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B)
thigh
done
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C)
shank
done
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D)
forearm
done
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question_answer 111) Schwann cells are present on which part of aneuron?
A)
Axon
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B)
Soma/body
done
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C)
Dendrites
done
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D)
Axon hillock
done
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View Answer play_arrow
question_answer 112) Toxin produced by tetanus affects
A)
Jaw bones
done
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B)
voluntary muscles
done
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C)
Involuntary muscles
done
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D)
Both (a) and (b)
done
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View Answer play_arrow
question_answer 113) A tendency of recurrent seizures is known as
A)
Epilepsy
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B)
neurosis
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C)
Psychosis
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D)
None of these
done
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View Answer play_arrow
question_answer 114) Benzypyrene is found in
A)
Tomato
done
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B)
alcohol
done
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C)
Tobacco
done
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D)
brinjal
done
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question_answer 115) Tobacco contain
A)
Codeine
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B)
nicotine
done
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C)
Morphine
done
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D)
cocaine
done
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View Answer play_arrow
question_answer 116) What is HLA?
A)
Group of genes
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B)
Group of proteins
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C)
Groups of polypeptides
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D)
Group of chromosomes
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question_answer 117) An example of innate immunity is
A)
\[{{\text{T}}_{\text{H}}}\text{-}\]cells
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B)
T-lymphocytes
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C)
B-lymphocytes
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D)
PMNL-neutrophils
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question_answer 118) Vaccines are
A)
Curative medicines
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B)
Monoclonal antibodies
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C)
treated bacteria or viruses
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D)
MHC proteins
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question_answer 119) Animals which have well marked digestive cavity are put under
A)
Metazoa
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B)
Bryozoa
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C)
Parazoa
done
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D)
Enterozoa
done
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View Answer play_arrow
question_answer 120) Bath sponges are found in
A)
red sea
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B)
Gulf of Mexico
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C)
Mediterranean sea
done
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D)
All of these
done
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View Answer play_arrow
question_answer 121) Coral reefs are formed by
A)
molluscs
done
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B)
coelenterates
done
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C)
protozoans
done
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D)
echinoderms
done
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View Answer play_arrow
question_answer 122) In tapeworm, vitel line gland, produces
A)
ova
done
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B)
shell
done
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C)
Mucous cells
done
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D)
yolk cells
done
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question_answer 123) Which of the following disease is caused by anematode?
A)
Leprosy
done
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B)
Filariasis
done
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C)
Amoebiasis
done
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D)
Poliomyelitis
done
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View Answer play_arrow
question_answer 124) Diplosegments are found in
A)
Spider
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B)
insect
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C)
Millipede
done
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D)
centipede
done
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question_answer 125) The pluteus larva of Echinodermata belongs to the class
A)
Crinoidea
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B)
Ophiuroidea
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C)
Asteroidea
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D)
Holothuroidea
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question_answer 126) Which one is not a vertebrate?
A)
Fish
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B)
Sparrow
done
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C)
Oryctolagus
done
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D)
Amphioxus
done
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View Answer play_arrow
question_answer 127) Which one of the following is a fish?
A)
Sea peri
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B)
Sea horse
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C)
Sea lion
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D)
Sea urchin
done
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question_answer 128) On the feeding habit, the common house lizard Hemidactylus can be termed as
A)
entomophagous
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B)
phytophagous
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C)
saprophagous
done
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D)
sanguivorous
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View Answer play_arrow
question_answer 129) The wave like contraction of the smoothmuscles of digestive trait is called
A)
Peristalsis
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B)
deglutition
done
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C)
Fibrillation
done
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D)
mastication
done
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question_answer 130) Which one is different from the category of other three?
A)
Ptyalin
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B)
Secretin
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C)
Gastrin
done
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D)
Glucagon
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question_answer 131) Rate of breathing is directly affected by
A)
Oxygen in trachea
done
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B)
Concentration of\[{{O}_{2}}\]
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C)
Concentration of\[C{{O}_{2}}\]
done
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D)
Diaphragm expansion
done
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question_answer 132) Arteries carry oxygenated blood except
A)
cardiac
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B)
hepatic
done
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C)
systemic
done
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D)
pulmonary
done
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question_answer 133) ECG is least effective in detecting abnormalitiesin
A)
Cardiac rhythm
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B)
coronary blood Row
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C)
cardiac contractility
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D)
atrioventricular conduction
done
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View Answer play_arrow
question_answer 134) A nephron does not have loop of Henie in
A)
frog
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B)
dog
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C)
man
done
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D)
rabbit
done
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question_answer 135) Substance that accumulates in the fatigued muscle is
A)
ADP
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B)
lactic add
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C)
pyruvic acid
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D)
carbon dioxide
done
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View Answer play_arrow
question_answer 136) Which one is related to diencephalon?
A)
Basal ganglia
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B)
Olfactory bulb
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C)
Hypothalamus
done
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D)
Cerebral cortex
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question_answer 137) Which of the following -depresses the heartbeat?
A)
Vagus
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B)
Pericardia!
done
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C)
Trigemunal
done
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D)
Spinal accessory
done
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View Answer play_arrow
question_answer 138) Perception of colour is possible among
A)
Apes
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B)
monkeys
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C)
Humans
done
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D)
All of these
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View Answer play_arrow
question_answer 139) Structure which has no role in endocrine secretion is
A)
Testes
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B)
duodenum
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C)
Adrenal medulla
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D)
sub maxillary gland
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question_answer 140) All of the following hormones exert tropic effect except
A)
LH
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B)
TSH
done
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C)
ACTH
done
clear
D)
prolactin
done
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View Answer play_arrow
question_answer 141) Natural parthenogenesis occurs in
A)
Honey bee
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B)
all insects
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C)
protozoans
done
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D)
earthworm
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View Answer play_arrow
question_answer 142) Cumulus covers
A)
Ovum
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B)
ovary
done
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C)
Embryo
done
clear
D)
All of these
done
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View Answer play_arrow
question_answer 143) Which one in female is like prostate gland in male?
A)
Bartholins gland
done
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B)
Clitoris
done
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C)
Bulbourethral gland
done
clear
D)
none of these
done
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View Answer play_arrow
question_answer 144) The eggs of some mammals have more yolk, they are
A)
eutherians
done
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B)
prototheria ns
done
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C)
metatherians
done
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D)
aquatic mammals
done
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View Answer play_arrow
question_answer 145) Total cleavage in egg is possible in
A)
telolecithal
done
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B)
oligolecithal
done
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C)
centrolecithal
done
clear
D)
macrolecithal
done
clear
View Answer play_arrow
question_answer 146) Broken arms are regenerated in
A)
fishes
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B)
molluscs
done
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C)
Echinoderms
done
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D)
human beings
done
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View Answer play_arrow
question_answer 147) In embryos of placental mammals
A)
yolk sac develops but has no yolk.
done
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B)
yolk sac develops and has yolk
done
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C)
yolk sac does not develop
done
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D)
None of the above
done
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View Answer play_arrow
question_answer 148) Insulin increases glucose uptake in all the following structures except
A)
cardiac muscles
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B)
skeletal muscles
done
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C)
in testinalmucoa
done
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D)
adipose tissue
done
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View Answer play_arrow
question_answer 149) A bird differs from a reptile in the absence of
A)
tail
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B)
kidney
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C)
nephron
done
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D)
urinary bladder
done
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View Answer play_arrow
question_answer 150) First heart transplant was performed by
A)
Joseph Murray
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B)
Walton Lillehel
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C)
Arthur Vineberg
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D)
Christian Bamard
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question_answer 151) Wild rice originated somewhere in
A)
Valley of Kashmir
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B)
Coast of Arabian sea
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C)
Coast of Bay of Bengal
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D)
Delta of River Gangas
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question_answer 152) The first Indian literature on classification of plants and animals is
A)
Charaka Samhita
done
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B)
SusrutaSamhita
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C)
Taittiriya Upanishad
done
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D)
Chandyogya Upanishad
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question_answer 153) Horticulture is the study of
A)
agricultural fields
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B)
growing mushrooms
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C)
flowers and pollination
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D)
garden plants and vegetables
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question_answer 154) Limnology is the study of
A)
estuaries
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B)
sea and oceans
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C)
fresh water bodies
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D)
brakish water bodies
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question_answer 155) Which of the following is absent in chloroplast?
A)
DNA
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B)
Carotene
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C)
Anthocyanin
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D)
Xanthophyll
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question_answer 156) Regarding microtubules, all the following statements are true except they
A)
help to determine cell shape
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B)
are major components of centrioles
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C)
are major components of microvilli
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D)
are major components of cytoskeleton
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question_answer 157) Plant material best suited for studying mitosis is
A)
cork
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B)
anther
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C)
root tip
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D)
All of these
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question_answer 158) A dwarf pea plant was treated with gibberellic acid. It grows as a pure pea plant. If the treated plant is crossed with a pure tall plants, the phenotypic ratio of is likely to
A)
all tall
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B)
75% tall and 25% dwarf
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C)
all dwarf
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D)
50% tall and 50% dwarf
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question_answer 159) Coal is the fossil wood of
A)
cryptogamic plants
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B)
spermatophytes
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C)
thallophytes
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D)
bryophytes
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question_answer 160) Earth has maximum amount of oxygen in
A)
atmosphere
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B)
hydrosphere
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C)
lithosphere
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D)
biosphere
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question_answer 161) Chipko agitation was first started from
A)
TehriGarhwal
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B)
Srinagar, Kashmir
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C)
Dehradun
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D)
Darjeeling
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question_answer 162) Ability of tumour formation is found in plasmids of
A)
E. coli
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B)
Pseudomonas
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C)
Agrobacterium
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D)
Pneumococcus
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question_answer 163) Synthetic indigo is produced using extracts of
A)
Indigo/era
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B)
Tectona
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C)
Shorea
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D)
None of these
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question_answer 164) First transgenic plant released for commercial use was
A)
Bt cotton
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B)
tomatoes
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C)
tobacco
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D)
Golden rice
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question_answer 165) A short sequence of DNA where the repressor binds, preventing RNA polymerase from attaching to the promoter is called
A)
regulator
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B)
operator
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C)
promoter
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D)
None of these
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question_answer 166) For green manuring, crops used mostly belong to family
A)
Asteraceae
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B)
Brassicaceae
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C)
Fabaceae
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D)
Poaceae
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question_answer 167) Best biofertilizer for paddy fields is
A)
Rhizobium
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B)
Azolla
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C)
Anthoceros
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D)
Bacillus polymyxa
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question_answer 168) According to Tippos system of classification, which group of plans possess multicellular embryo but no vascular tissues?
A)
Gymnospems
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B)
Angiosperms
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C)
Bryophyta
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D)
Filicineae
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question_answer 169) Archegonia are not found in
A)
bryophytes
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B)
pteridophytes
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C)
gymnosperms
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D)
angiosperms
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question_answer 170) Floral characters are given more emphasis than the vegetative characters in taxonomic studies because
A)
floral characters are attractive
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B)
floral characters are conservative
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C)
floral characters are variable
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D)
None of the above
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question_answer 171) The natural system of classification of plants was proposed by
A)
Huxley
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B)
C Linnaeus
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C)
Engler and Pranti
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D)
Bentham and Hooker
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question_answer 172) Order-In ferae belongs to
A)
Polypetalae
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B)
Gamopetalae
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C)
Monochlamydae
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D)
None of these
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question_answer 173) Minute seed producing plants belong to
A)
Orchidaceae
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B)
Solanaceae
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C)
Asteraceae
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D)
Papaveraceae
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question_answer 174) Cell wall is extremely well preserved in fossilspecimen in
A)
diatoms
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B)
dinoflagellates
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C)
slimemoulds
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D)
None of these
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question_answer 175) Ascus mother cell of yeast lacks
A)
cell wall
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B)
cytoplasm
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C)
nuclear vacuole
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D)
nucleus
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question_answer 176) Neck canal cells are not found in the archegonia of
A)
Riccia, Marachantia
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B)
Pteris, Pteridium
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C)
Cycas, Pinus
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D)
Anthoceros, Funaria
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question_answer 177) Seeds of which plant are known as Jewellers weight?
A)
Orchids
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B)
Xanthium
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C)
Abrusprecatorius
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D)
Calotropis
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question_answer 178) Pseudostem develops in
A)
ginger
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B)
Eichhomia
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C)
banana
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D)
Asparagus
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question_answer 179) Negative geotropism is shown by the roots of
A)
orchids
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B)
Ficus
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C)
Rhizophora
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D)
Trapabispinosa
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question_answer 180) Cork cells are dead because they do not possess
A)
cellulosic cell wall
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B)
permeable cell wall
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C)
protoplast
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D)
meristematic activities
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question_answer 181) Which will die first, if the phloem tissue is damaged?
A)
Shoot
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B)
Leaves
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C)
Roots
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D)
Apical meristem
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question_answer 182) Photosynthetic evolution of oxygen requires
A)
Co-enzyme
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B)
Fe-enzyme
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C)
Mn-enzyme
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D)
Zn-enzyme
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question_answer 183) Glycolate accumulates in chloroplasts when there is
A)
Iow\[C{{O}_{2}}\]
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B)
high \[C{{O}_{2}}\]
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C)
bright light
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D)
low temperature
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question_answer 184) Starting point of photorespiration in \[{{C}_{4}}-\]plantsis
A)
glycerate
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B)
glycolate
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C)
glycolysis
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D)
None of these
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question_answer 185) Pyruvate dehydrogenase is used in converting
A)
pyruvate to glucose
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B)
glucose to pyruvate
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C)
pyruvic acid to lactic and
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D)
pyruvate to acetyl Co-A
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question_answer 186) During meiosis, a microspore mother cell has 12bivalents, the number of chromosomes in its pollen grain will be
A)
12
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B)
24
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C)
6
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D)
18
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question_answer 187) Very delayedfertilizarin occurs in
A)
angiospems
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B)
Cycas and Pinus
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C)
spermatophytes
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D)
All of these
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question_answer 188) Seedless fruits are produced from
A)
unpollinated ovary
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B)
unfertilized ovary
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C)
cleistogamous flowers
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D)
fertilized ovary
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question_answer 189) Haploid callus can be converted to diploid callususing
A)
polyethylene glycol
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B)
colchicines
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C)
cytokinins
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D)
auxins
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question_answer 190) ABA
A)
promotes senescence
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B)
does not promote tuber sprouting
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C)
Both (a) and (b)
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D)
None of the above
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question_answer 191) Apical dominance is not affected by
A)
indole acetic acid
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B)
indole acetaldehyde
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C)
gibberellins
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D)
indole butyric acid
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question_answer 192) Ethylene gas
A)
slows down ripening of apples
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B)
speeds up maturations and ripening of fruits
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C)
is saturated hydrocarbon
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D)
retards ripening of tomatoes
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question_answer 193) Maximum amount of growth in root occurs
A)
in presence of light
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B)
at its apex
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C)
behind the apex
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D)
in the presence of soil
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question_answer 194) The stimulus for geotropism in roots is perceived by
A)
root cap
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B)
quiescent centre
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C)
root tip
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D)
None of these
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question_answer 195) To determine heterozygosity or homozygosity, aplant must be crossed with
A)
recessive
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B)
dominant
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C)
homozygous dominant
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D)
heterozygous dominant
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question_answer 196) DNA strands are antiparallel because of the presence of
A)
H-bonds
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B)
peptide bonds
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C)
disulphide bonds
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D)
phosphodiester bonds
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question_answer 197) DNA is very long in relation to its diameter. If a strand of DNA is 0.1 mm in length, what is dieratio of length to diameter or the axial ratio?
A)
5,000
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B)
50,000
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C)
10,000
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D)
1,00,000
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question_answer 198) Transcription of DNA is aided by
A)
exonuclease
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B)
recombinase
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C)
DNA polymerase
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D)
RNA polymerase
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question_answer 199) Which part of Ephedra yields ephedrine?
A)
Flowers
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B)
Stem or whole plant
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C)
Leaves
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D)
Roots
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question_answer 200) Monoecious mosses in which antheridia and archegonia are borne on separate branches of the same plant are called
A)
synoecious mosses
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B)
heteroecious mosses
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C)
autoecious mosses
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D)
antoeciousmosse
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