question_answer 1) A particle moves in a circle of radius 5 cm with constant speed and time period \[0.2\pi s.\] The acceleration of the particle is
A)
\[25\,m/{{s}^{2}}\]
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B)
\[36\,m/{{s}^{2}}\]
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C)
\[5\,m/{{s}^{2}}\]
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D)
\[15\,m/{{s}^{2}}\]
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question_answer 2)
If power dissipated in the \[9\,\Omega \]resistor in the circuit shown in 36W, the potential difference across the \[2\,\Omega \] resistor is
A)
8 V
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B)
10 V
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C)
2 V
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D)
4 V
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question_answer 3)
A particle of mass m is released from rest and follows a parabolic path as shown. Assuming that the displacement of the mass from the origin is small, which graph correctly depicts the position of the particle as a function of time?
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 4)
A zener diode, having breakdown voltage equal to 15 V, is used in a voltage regulator circuit shown in figure. The current through the diode is
A)
10 mA
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B)
15 mA
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C)
20 mA
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D)
5 mA
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question_answer 5) A thin prism of angle \[\text{1}{{\text{5}}^{\text{o}}}\] made of glass of refractive index \[{{\mu }_{1}}=1.5\]is combined with another prism of glass of refractive index \[{{\mu }_{2}}=1.75\]The combination of the prism produces dispersion without deviation. The angle of the second prism should be
A)
\[{{7}^{o}}\]
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B)
\[{{10}^{o}}\]
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C)
\[{{12}^{o}}\]
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D)
\[{{5}^{o}}\]
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question_answer 6) A conveyor belt is moving at a constant speed of 2 m/s. A box is gently dropped on it. The coefficient of friction between them is \[\mu =0.5\]The distance that the box will move relative to belt before coming to rest on it taking \[g=10\,m{{s}^{-2}},\]is
A)
1.2m
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B)
0.6m
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C)
Zero
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D)
0.4 m
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question_answer 7) An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of \[2\,\text{m}{{\text{s}}^{-1}}.\]The mass per unit length of water in the pipe is \[100\,\text{kg}{{\text{m}}^{-1}}.\] What is the power of the engine?
A)
400W
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B)
200W
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C)
100 W
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D)
800 W
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question_answer 8) A thin ring of radius R metre has charge q coulomb uniformly spread on it. The ring rotates about its axis with a constant frequency of\[f\]revolution/s. The value of magnetic induction in \[\text{Wb}{{\text{m}}^{-2}}\]at the centre of the ring is
A)
\[\frac{{{\mu }_{0}}qf}{2\pi R}\]
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B)
\[\frac{{{\mu }_{0}}q}{2\pi fR}\]
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C)
\[\frac{{{\mu }_{0}}q}{2fR}\]
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D)
\[\frac{{{\mu }_{0}}qf}{2R}\]
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question_answer 9) Which one of the following bonds produces a solid that reflects light in the visible region and whose electrical conductivity decreases with temperature and has high melting point?
A)
Metallic bonding
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B)
Van der Waals bonding
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C)
Ionic bonding
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D)
Covalent bonding
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question_answer 10) A particle moves a distance \[x\] in time t according to equation \[x={{(t+5)}^{-1}}.\]The acceleration of particle is proportional to
A)
\[{{(\text{velocity})}^{3/2}}\]
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B)
\[{{(distance)}^{2}}\]
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C)
\[{{(distance)}^{-2}}\]
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D)
\[{{(velocity)}^{2/3}}\]
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question_answer 11) A conducting circular loop is placed in a uniform magnetic field, B = 0.025 T with its plane perpendicular to the loop. The radius of the loop is made to shrink at a constant rate of \[\text{1}\,\text{mm}{{\text{s}}^{-1}}.\] The induced emfwhen the radius is 2 cm, is
A)
\[2\pi \mu \,V\]
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B)
\[\pi \mu \,V\]
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C)
\[\frac{\pi }{2}\mu V\]
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D)
\[2\mu V\]
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question_answer 12) The activity of a radioactive sample is measured as \[{{N}_{0}}\]counts per minute at \[t=0\]and \[{{N}_{0}}/e\]counts per minute at t = 5 min. The time (in minute)- at which the activity reduces to half its value is
A)
\[{{\log }_{e}}2/5\]
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B)
\[\frac{5}{{{\log }_{e}}2}\]
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C)
\[5\,{{\log }_{10}}2\]
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D)
\[5\,{{\log }_{e}}2\]
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question_answer 13) The speed of a projectile at its maximum height is half of its initial speed. The angle of projection is
A)
\[{{60}^{o}}\]
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B)
\[{{15}^{o}}\]
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C)
\[{{30}^{o}}\]
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D)
\[{{45}^{o}}\]
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question_answer 14) From a circular disc of radius R and mass 9M, a small disc of mass M and radius \[\frac{R}{3}\]is removed concentrically. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through its centre is
A)
\[\frac{40}{9}M{{R}^{2}}\]
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B)
\[M{{R}^{2}}\]
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C)
\[4M{{R}^{2}}\]
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D)
\[\frac{4}{9}M{{R}^{2}}\]
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question_answer 15) A particle moves in \[x-y\]plane according to rule \[x=a\sin \omega t\]and \[y=a\cos \omega t.\]The particle follows
A)
an elliptical path
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B)
a circular path
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C)
a parabolic path
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D)
a straight line path inclined equally to \[x\] and y-axes
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question_answer 16) A closely wound solenoid of 2000 turns and area of cross-section \[1.5\times {{10}^{-4}}{{m}^{2}}\]carries a current of 2.0 A. It is suspended through its centre and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field \[5\times {{10}^{-2}}\]making an angle of \[{{30}^{o}}\] with the axis of the solenoid. The torque on the solenoid will be
A)
\[3\times {{10}^{-3}}N-m\]
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B)
\[1.5\times {{10}^{-3}}N-m\]
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C)
\[1.5\times {{10}^{-2}}N-m\]
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D)
\[3\times {{10}^{-2}}N-m\]
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question_answer 17) The decay constant of a radio isotope is \[\lambda .\] If \[{{A}_{1}}\]and \[{{A}_{2}}\]are its activities at times \[{{t}_{1}}\]and \[{{t}_{2}}\]respectively, the number of nuclei which have decayed during the time \[({{t}_{1}}-{{t}_{2}})\]
A)
\[{{A}_{1}}{{t}_{1}}-{{A}_{2}}{{t}_{2}}\]
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B)
\[{{A}_{1}}-{{A}_{2}}\]
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C)
\[\frac{({{A}_{1}}-{{A}_{2}})}{\lambda }\]
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D)
\[\lambda ({{A}_{1}}-{{A}_{2}})\]
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question_answer 18) Susceptibility of ferromagnetic substance is
A)
\[>1\]
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B)
\[<1\]
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C)
Zero
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D)
1
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question_answer 19) What is the angular velocity of earth?
A)
\[\frac{2\pi }{86400}\text{rad/s}\]
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B)
\[\frac{2\pi }{3600}\text{rad/s}\]
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C)
\[\frac{2\pi }{24}rad/s\]
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D)
\[\frac{2\pi }{6400}\text{rad/s}\]
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question_answer 20) What is the refractive index of a prism whose angle \[A={{60}^{o}}\]and angle of minimum deviation \[{{d}_{m}}={{30}^{o}}\]?
A)
\[\sqrt{2}\]
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B)
\[\frac{1}{\sqrt{2}}\]
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C)
1
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D)
\[\frac{1}{\sqrt{3}}\]
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question_answer 21) A satellite of mass m is placed at a distance r from the centre of earth (mass M). The mechanical energy of the satellite is
A)
\[-\frac{GMm}{r}\]
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B)
\[\frac{GMm}{r}\]
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C)
\[\frac{GMm}{2r}\]
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D)
\[-\frac{GMm}{2r}\]
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question_answer 22) A cell of constant emf first connected to a resistance \[{{R}_{1}}\]and then connected to a resistance \[{{R}_{2}}.\]If power delivered in both cases is same then the internal resistance of the cell is
A)
\[\sqrt{{{R}_{1}}{{R}_{2}}}\]
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B)
\[\sqrt{\frac{{{R}_{1}}}{{{R}_{2}}}}\]
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C)
\[\frac{{{R}_{1}}-{{R}_{2}}}{2}\]
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D)
\[\frac{{{R}_{1}}+{{R}_{2}}}{2}\]
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question_answer 23) Energy gap between valence band and conduction band of a semiconductor is
A)
Zero
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B)
infinite
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C)
1 eV
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D)
10 eV
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question_answer 24) A glass flask having mass 390 g and an interior volume of \[\text{500 c}{{\text{m}}^{\text{3}}}\]floats on water when it is less than half filled with water. The density of the material of the flask is
A)
0.8 g/cc
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B)
2.8 g/cc
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C)
1.8 g/cc
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D)
0.28 g/cc
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question_answer 25) The angle of minimum deviation \[{{\delta }_{m}}\] for an equilateral glass prism is \[\text{3}{{\text{0}}^{\text{o}}}\text{.}\] Refractive index of the prism is
A)
\[1/\sqrt{2}\]
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B)
\[\sqrt{2}\]
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C)
\[2\sqrt{2}\]
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D)
\[1/2\sqrt{2}\]
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question_answer 26) When the wavelength of sound changes from 1 m to 1.01 m, the number of beats heard are 4. The velocity of sound is
A)
404 m/s
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B)
4.04 m/s
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C)
414 m/s
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D)
400 m/s
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question_answer 27) At what height h above earth, the value of g becomes g/2? (R = Radius of earth)
A)
\[3R\]
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B)
\[\sqrt{2}R\]
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C)
\[(\sqrt{2}-1)R\]
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D)
\[\frac{1}{\sqrt{2}}R\]
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question_answer 28) A freshly prepared radioactive source of half-life 2h emits radiation of intensity which is 64 times the permissible safe level. Calculate the minimum time after which it would be possible to work safely with this source.
A)
12 h
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B)
24 h
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C)
6 h
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D)
130 h
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question_answer 29)
The current in the circuit shown in the figure considering ideal diode is
A)
75N
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B)
\[80\,N\]
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C)
\[7.5\,N\]
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D)
\[30\,N\]
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question_answer 30)
The tension in the string in the pulley system shown in the figure is
A)
75N
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B)
80N
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C)
7.5 N
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D)
30 N
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question_answer 31) The rest mass of a body is rriQ, if it moves with a velocity of 0.6 c, then its relativistic mass is m, then
A)
\[m<{{m}_{0}}\]
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B)
\[m={{m}_{0}}\]
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C)
\[m>{{m}_{0}}\]
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D)
None of theses
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question_answer 32)
What is the potential difference across \[2\mu F\] capacitor in the circuit shown?
A)
12 V
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B)
4 V
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C)
6V
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D)
18 V
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question_answer 33) Solar radiation is
A)
transverse electromagnetic wave
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B)
longitudinal electromagnetic wave
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C)
stationary wave
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D)
None of the above
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question_answer 34) Fundamental frequency of an open pipe is\[{{f}_{0}}\] Fundamental frequency when it is half filled with water is
A)
\[{{f}_{0}}\]
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B)
\[{{f}_{0}}/2\]
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C)
\[2{{f}_{0}}\]
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D)
\[3f\]
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question_answer 35) If the rms velocity of a gas is v, then
A)
\[{{v}^{2}}T=\] constant
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B)
\[{{v}^{2}}/T=\]constant
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C)
\[v{{T}^{2}}=\]constant
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D)
v is independent of T
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question_answer 36) Which one of the following statement is false?
A)
Pure Si doped with trivalent impurities gives a p-type semiconductor
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B)
Majority carriers in a n-type semiconductor are holes
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C)
Minority carriers in a p-type semiconductor are electrons
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D)
The resistance of intrinsic semiconductor decreases with increase of temperature
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question_answer 37) The displacement of a particle along the \[x-\]axis is given by \[x=a{{\sin }^{2}}\omega t.\]The motion of the particle corresponds to
A)
simple harmonic motion of frequency\[\omega /\pi \]
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B)
simple harmonic motion of frequency\[3\omega /2\pi \]
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C)
non simple harmonic motion
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D)
simple harmonic motion of frequency\[\omega /2\pi \]
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question_answer 38) The radii of circular orbits of two satellites A and B of the earth are 4R and R, respectively If the speed of satellite A is 3v, then the speed of satellite B will be
A)
\[3v/4\]
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B)
\[6v\]
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C)
\[12v\]
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D)
\[3v/2\]
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question_answer 39) A beam of cathode rays is subjected to crossed electric (E) and magnetic fields . The fields are adjusted such that the beam is not deflected. The specific charge of the cathode rays is given by
A)
\[\frac{{{B}^{2}}}{2V{{E}^{2}}}\]
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B)
\[\frac{2V{{B}^{2}}}{{{E}^{2}}}\]
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C)
\[\frac{2V{{E}^{2}}}{{{B}^{2}}}\]
done
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D)
\[\frac{{{E}^{2}}}{2V{{B}^{2}}}\]
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question_answer 40) A ball is dropped from a high rise platform at t = 0 starting from rest. After 6 s another ball is thrown downwards from the same platform with a speed v. The two balls meet at t = 18 s. What is the value of v?(Take \[g=10\,m{{s}^{-2}}\])
A)
\[74\,m{{s}^{-1}}\]
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B)
\[64\,m{{s}^{-1}}\]
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C)
\[84\,m{{s}^{-1}}\]
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D)
\[94\,m{{s}^{-1}}\]
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question_answer 41) An alpha nucleus of energy \[\frac{1}{2}m{{v}^{2}}\]bombards a heavy nuclear target of charge Ze. Then the distance of closest approach for the alpha nucleus will be proportional to
A)
\[\frac{1}{Ze}\]
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B)
\[{{v}^{2}}\]
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C)
\[\frac{1}{m}\]
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D)
\[\frac{1}{{{v}^{4}}}\]
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question_answer 42) A lens having focal length \[f\] and aperture of diameter d forms an image of intensity \[I.\] Aperture of diameter \[\frac{d}{2}\] in central region of 2i lens is covered by a black paper. Focal length of lens and intensity of image now will be respectively
A)
\[f\]and \[\frac{I}{4}\]
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B)
\[\frac{3f}{4}\]and \[\frac{I}{2}\]
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C)
\[f\]and \[\frac{3I}{4}\]
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D)
\[\frac{f}{2}\]and \[\frac{I}{2}\]
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question_answer 43) A galvanometer has a coil of resistance m \[100\,\Omega \] and gives a full scale deflection for 30 mA current. If it is to work as a voltmeter of 30 V range, the resistance required to be added will be
A)
\[900\,\Omega \]
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B)
\[1800\,\Omega \]
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C)
\[500\,\Omega \]
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D)
\[100\,\Omega \]
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question_answer 44) A gramophone record is revolving with an angular velocity \[\omega .\] A coin is placed at a distance r from the centre of the record. The static coefficient of friction is \[\mu .\] The coin will revolve with the record if
A)
\[r=\mu g{{\omega }^{2}}\]
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B)
\[r<\frac{{{\omega }^{2}}}{\mu g}\]
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C)
\[r\le \frac{\mu g}{{{\omega }^{2}}}\]
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D)
\[r\ge \frac{\mu g}{{{\omega }^{2}}}\]
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question_answer 45) Which of the following statement is false for the properties of electromagnetic waves?
A)
Both electric and magnetic field vectors attain the maxima and minima at the same place and same time
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B)
The energy in electromagnetic wave is divided equally between electric and magnetic vectors
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C)
Both electric and magnetic field vectors are parallel to each other and perpendicular to the direction of propagation of wave
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D)
These waves do not require any material medium for propagation
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question_answer 46) Assertion Magnetic field interacts with a moving charge and not with a stationary charge. Reason A moving charge produces a magnetic field.
A)
If the Assertion and Reason are true and Reason is the correct explanation of Assertion.
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
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C)
If Assertion is true but Reason is false.
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D)
If both Assertion and Reason are false.
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question_answer 47) Assertion There is no current in the metals in the absence of electric field. Reason Motion of free electrons are randomly.
A)
If the Assertion and Reason are true and Reason is the correct explanation of Assertion.
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
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C)
If Assertion is true but Reason is false.
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D)
If both Assertion and Reason are false.
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question_answer 48) Assertion Particle velocity and wave velocity both are independent of time. Reason For the propagation of wave motion, the medium must have the properties of elasticity and inertia.
A)
If the Assertion and Reason are true and Reason is the correct explanation of Assertion.
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
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C)
If Assertion is true but Reason is false.
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D)
If both Assertion and Reason are false.
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question_answer 49) Assertion For higher temperature, the peak emission wavelength of a black body shifts to lower wavelength. Reason Peak emission wavelength of a black body is proportional to the fourth power of temperature.
A)
If the Assertion and Reason are true and Reason is the correct explanation of Assertion.
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
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C)
If Assertion is true but Reason is false.
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D)
If both Assertion and Reason are false.
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question_answer 50) Assertion Displacement of a body may be zero when distance travelled by it is not zero. Reason The displacement is the longer distance between initial and final position.
A)
If the Assertion and Reason are true and Reason is the correct explanation of Assertion.
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
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C)
If Assertion is true but Reason is false.
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D)
If both Assertion and Reason are false.
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question_answer 51) Diborane reacts with ammonia under different conditions to give a variety of products. Which one amo ng the following is not formed in these reactions?
A)
\[{{B}_{2}}{{H}_{6}}.2N{{H}_{3}}\]
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B)
\[{{B}_{12}}{{H}_{12}}\]
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C)
\[{{B}_{3}}{{N}_{3}}{{H}_{6}}\]
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D)
\[{{(BN)}_{n}}\]
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question_answer 52) Helium mixed with oxygen is used in the treatment of
A)
beri beri
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B)
burning feet
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C)
joints burning
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D)
asthma
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question_answer 53) Which one of the following of 2, 3-butane idol is enantiomeric?
A)
2R, 3R and 2S, 3S
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B)
2S, 3S and 25, 3R
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C)
2R, 3R and 2R, 35
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D)
2S, 3S and 2R, 35
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question_answer 54) The AT/GC ratio in human beings is (where A = adenine, T = thymine, G = Guanine, C = cytosine)
A)
1
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B)
1.52
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C)
9.3
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D)
2
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question_answer 55) If \[BaC{{l}_{2}}\]ionizes to an extent of 80% in aqueous solution, the value of vant Hoff factor is
A)
2.6
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B)
0.24
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C)
0.8
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D)
2.4
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question_answer 56) The \[s{{p}^{3}}\]hybridisation is present on the central atom in
A)
HCHO
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B)
\[BC{{l}_{3}}\]
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C)
\[PC{{l}_{3}}\]
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D)
\[S{{O}_{3}}\]
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question_answer 57) The number of unit cells in the 5.85g crystals of NaCI are
A)
\[1.5\times {{10}^{23}}\]
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B)
\[1.5\times {{10}^{22}}\]
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C)
\[3.0\times {{10}^{22}}\]
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D)
\[3.0\times {{10}^{23}}\]
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question_answer 58) The oxidation number of sulphur is -1 in
A)
\[{{H}_{2}}S\]
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B)
\[Fe{{S}_{2}}\]
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C)
\[C{{S}_{2}}\]
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D)
\[C{{u}_{2}}S\]
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question_answer 59) For which of the following metals, the electronic configuration of valence shell is not\[{{d}^{6}}\]?
A)
Fe (II)
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B)
Mn (II)
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C)
Co (III)
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D)
Ni (IV)
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question_answer 60) 68 g sugar \[({{C}_{12}}{{H}_{22}}{{O}_{11}})\] is dissolved in 1 kg of water. What is the mole fraction of sugar?
A)
0.018
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B)
0.036
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C)
0.0018
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D)
0.0036
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question_answer 61) The pH of 0.1 M aqueous ammonia\[({{K}_{b}}=1.8\times {{10}^{-5}})\]is
A)
9.13
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B)
10.13
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C)
11.13
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D)
12.13
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question_answer 62) From the following mixtures, which is not a buffer (concentration level 0.5 M)?
A)
\[C{{H}_{3}}COOH+NaOH(2:1)\]
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B)
\[HCl+N{{H}_{3}}(aq)(1:2)\]
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C)
\[C{{H}_{3}}COOH+NaOH(1:2)\]
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D)
\[HCl+N{{H}_{3}}(2:3)\]
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question_answer 63) How much volume (in litre) of 3 M NaOH is obtained from 80 g NaOH? (Atomic mass of Na = 23 u)
A)
2.67
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B)
1.34
done
clear
C)
0.67
done
clear
D)
0.33
done
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question_answer 64) The initial concentration of sugar solution is 0.12M. On doing fermentation the concentration of sugar decreases to 0.06 M in 10 h and to 0.045 M in 15 h. The order of the reaction is
A)
0.5
done
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B)
1.0
done
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C)
1.5
done
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D)
2.0
done
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question_answer 65) For the decomposition of \[{{N}_{2}}{{O}_{5}}\]into \[{{N}_{2}}O\]and \[{{O}_{2}}\] in the presence of Ar, the velocity constant, k is \[k=5\times {{10}^{11}}{{e}^{-30,000/T}}\]For this, the activation energy is (in \[\text{kJ}\,\text{mo}{{\text{l}}^{-1}}\])
A)
2.494
done
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B)
24.94
done
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C)
249.42
done
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D)
2494
done
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View Answer play_arrow
question_answer 66) The following equilibrium establishes on heating 0.2 mole of H2 and 1.0 mole of sulphur in 1 L vessel at \[90{{\,}^{o}}C.\] \[{{H}_{2}}(g)+S(s)\rightleftharpoons {{H}_{2}}S(g);K=6.8\times {{10}^{-2}}\] The partial pressure of \[{{H}_{2}}S\]in equilibrium state is
A)
4.20
done
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B)
0.42
done
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C)
0.21
done
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D)
0.042
done
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question_answer 67) An aqueous solution boils at \[100.2{{\,}^{o}}C.\]which temperature this will freeze? \[({{K}_{b}}=0.5{{\,}^{o}}C/m,{{K}_{f}}=1.9{{\,}^{o}}C/m)\]
A)
\[+\,0.76\]
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B)
\[-\,0.76\]
done
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C)
\[-\,0.38\]
done
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D)
\[+\,0.38\]
done
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question_answer 68) The lowest \[p{{K}_{a}}\] value is for
A)
phenol
done
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B)
m-cresol
done
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C)
o-cresol
done
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D)
p-cresol
done
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question_answer 69) At room temperature, the least stable compound is
A)
\[C{{H}_{3}}COCl\]
done
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B)
\[HCOCl\]
done
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C)
\[C{{H}_{3}}COOH\]
done
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D)
\[{{(C{{H}_{3}}CO)}_{2}}O\]
done
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View Answer play_arrow
question_answer 70) For the conversion of \[C{{H}_{2}}=C{{H}_{2}}\]into \[HOOC.C{{H}_{2}}C{{H}_{2}}COOH,\] the minimum number of steps required are
A)
2
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B)
3
done
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C)
4
done
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D)
5
done
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View Answer play_arrow
question_answer 71) Which of the following compounds does not give two isomer compounds on reaction with \[N{{H}_{2}}OH?\]
A)
\[C{{H}_{3}}CO{{C}_{2}}{{H}_{5}}\]
done
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B)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
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C)
\[C{{H}_{3}}CHO\]
done
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D)
\[PhCOC{{H}_{3}}\]
done
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question_answer 72) From the following which is not a reactant, reagent or product in Hofmann reaction?
A)
\[RCON{{H}_{2}}\]
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B)
\[RN{{H}_{2}}\]
done
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C)
\[B{{r}_{2}},OH\]
done
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D)
\[{{H}_{2}}S{{O}_{4}}\]
done
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View Answer play_arrow
question_answer 73) The total number of isomers for cyclic alcohol \[{{C}_{4}}{{H}_{7}}OH\]is
A)
2
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B)
3
done
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C)
4
done
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D)
5
done
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question_answer 74) The least stable free radical is
A)
\[\overset{\centerdot }{\mathop{C}}\,{{H}_{2}}C{{H}_{2}}CH{{\left( C{{H}_{3}} \right)}_{2}}\]
done
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B)
\[C{{H}_{3}}\underset{\centerdot }{\mathop{C}}\,HCH{{\left( C{{H}_{3}} \right)}_{2}}\]
done
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C)
\[C{{H}_{3}}C{{H}_{2}}\underset{\centerdot }{\mathop{C}}\,{{(C{{H}_{3}})}_{2}}\]
done
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D)
\[\overset{\centerdot }{\mathop{C}}\,{{H}_{3}}\]
done
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View Answer play_arrow
question_answer 75) The suitable reagent for the reduction of \[{{C}_{2}}{{H}_{5}}COOH\]into \[{{C}_{3}}{{H}_{7}}OH\]is
A)
\[B{{H}_{3}}/THF\] and\[{{H}_{3}}{{O}^{+}}\]
done
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B)
\[NaB{{H}_{4}}\]
done
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C)
\[Na/EtOH\]
done
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D)
\[{{H}_{2}}/catalyst\]
done
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View Answer play_arrow
question_answer 76) The blue colour of acidic solution of \[C{{r}_{2}}O_{7}^{2-}\]is not changed into green by
A)
\[{{C}_{6}}{{H}_{5}}C{{H}_{2}}OH\]
done
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B)
\[{{(C{{H}_{3}})}_{2}}CHOH\]
done
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C)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}OH\]
done
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D)
\[{{(C{{H}_{3}})}_{3}}COH\]
done
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View Answer play_arrow
question_answer 77) The reaction of \[{{C}_{2}}{{H}_{5}}Cl\]with Li and \[\text{CuI}\]gives mainly
A)
2-butene
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B)
1, 3-butadiene
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C)
n-butane
done
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D)
n-butyl chloride
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View Answer play_arrow
question_answer 78) The reagent which does not convert n-butyl chloride into n-butane is
A)
\[Zn,HCl\]
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B)
\[LiAl{{H}_{4}}\]
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C)
\[Mg,\] anhydrous ether,\[{{H}_{2}}O\]
done
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D)
\[{{B}_{2}}{{H}_{6}}\] in THF
done
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View Answer play_arrow
question_answer 79) The correct order of stability is
A)
pentane < iso -pentane < neo-pentane
done
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B)
iso -pentane < neo-pentane < pentane
done
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C)
neo-pentane < iso-pentane < pentane
done
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D)
pentane < neo-pentane < 150-pentane
done
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View Answer play_arrow
question_answer 80) The correct order of boiling point of ethyl dimethyl amine , n-butyl amine and diethyl amineis
A)
\[B>C>A\]
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B)
\[B>A>C\]
done
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C)
\[A>B>C\]
done
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D)
\[C>B>A\]
done
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question_answer 81) Which of the following compounds does not give lodoform test?
A)
\[C{{H}_{3}}COC{{H}_{2}}COO{{C}_{2}}{{H}_{5}}\]
done
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B)
\[~PhC{{H}_{2}}COC{{H}_{3}}\]
done
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C)
\[M{{e}_{3}}CCOC{{H}_{3}}\]
done
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D)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
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question_answer 82) The species which acts as both nucleophile and electrophile is
A)
\[C{{H}_{3}}CN\]
done
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B)
\[N{{H}_{3}}\]
done
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C)
\[P{{(C{{H}_{3}})}_{2}}\]
done
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D)
\[{{H}_{2}}\]
done
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question_answer 83) The most basic from the following is
A)
\[N{{H}_{3}}\]
done
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B)
\[C{{H}_{3}}N{{H}_{2}}\]
done
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C)
\[N{{F}_{3}}\]
done
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D)
\[N{{(Si{{H}_{3}})}_{3}}\]
done
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question_answer 84) The main product of the reaction of benzene with lithium in liquid ammonia and \[EtOH\]is
A)
done
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B)
done
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C)
done
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D)
done
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question_answer 85) The rate of free radical chlorination of \[C{{H}_{4}}\] is
A)
equal to\[C{{D}_{4}}\]
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B)
double the rate of \[C{{D}_{4}}\]
done
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C)
12 times the rate of \[C{{D}_{4}}\]
done
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D)
less than the rate of\[C{{D}_{4}}\]
done
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question_answer 86) The first ionisation energy difference maximum for which pair?
A)
\[Na,Mg\]
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B)
\[K,Ca\]
done
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C)
\[Rb,Sr\]
done
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D)
\[Cs,Ba\]
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question_answer 87) The ratio of third Bohr orbit radii second Bohr orbit radius for the hydrogen atom is
A)
0.5
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B)
1.5
done
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C)
0.75
done
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D)
2.25
done
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question_answer 88) The principal quantum number of \[Mn\] those valence shell orbits in which electrons are filled
A)
4, 3
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B)
4, 4
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C)
3, 3
done
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D)
5, 4
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question_answer 89) From the generally known oxidation states, the oxidation number is maximum for
A)
\[Mn\]
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B)
\[Cu\]
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C)
\[Sn\]
done
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D)
\[Sc\]
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question_answer 90) The number of molecules in 180 g of heavy water are
A)
\[6.02\times {{10}^{24}}\]
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B)
\[6.02\times {{10}^{22}}\]
done
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C)
\[5.42\times {{10}^{24}}\]
done
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D)
\[5.42\times {{10}^{23}}\]
done
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View Answer play_arrow
question_answer 91) Which of the following is reduced by\[{{H}_{2}}{{O}_{2}}\]?
A)
\[C{{l}_{2}}\]
done
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B)
\[{{[Fe{{(CN)}_{6}}]}^{4-}}\]
done
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C)
\[N{{H}_{2}}OH\]
done
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D)
\[SO_{3}^{2-}\]
done
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View Answer play_arrow
question_answer 92) The maximum energy molecular orbit filled by electron in nitrogen molecule is/are
A)
\[\sigma 2{{p}_{z}}\]
done
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B)
\[\pi 2{{p}_{x}}\approx 2{{p}_{y}}\]
done
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C)
\[\overset{*}{\mathop{\pi }}\,2{{p}_{x}}\approx \overset{*}{\mathop{\pi }}\,2{{p}_{y}}\]
done
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D)
\[\overset{*}{\mathop{\sigma }}\,2{{p}_{z}}\]
done
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View Answer play_arrow
question_answer 93) Which of the following is correct order for density?
A)
\[Cs>Rb>K>Na\]
done
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B)
\[Cs>Rb>Na>K\]
done
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C)
\[Rb>Cs>K>Na\]
done
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D)
\[Rb>Cs>Na>K\]
done
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View Answer play_arrow
question_answer 94) The correct order of dipole moment is
A)
\[B{{F}_{3}}<{{H}_{2}}S<{{H}_{2}}O\]
done
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B)
\[{{H}_{2}}S<B{{F}_{3}}<{{H}_{2}}O\]
done
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C)
\[{{H}_{2}}O<{{H}_{2}}S<B{{F}_{3}}\]
done
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D)
\[{{H}_{2}}O<B{{F}_{3}}<{{H}_{2}}S\]
done
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View Answer play_arrow
question_answer 95) Which of the following bond has minimum bond energy?
A)
C-H
done
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B)
N-H
done
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C)
O-H
done
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D)
F-H
done
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View Answer play_arrow
question_answer 96) Assertion\[N_{3}^{-}\]is a weaker base than \[NH_{2}^{-}.\] Reason The lone pair of electrons on N atom in \[N_{3}^{-}\]is in a\[s{{p}^{2}}-\]orbital while in \[NH_{2}^{-}\]it is in an \[s{{p}^{3}}-\]orbital.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
View Answer play_arrow
question_answer 97) Assertion Chlorine when solidifies does not have zero entropy even at absolute zero. Reason Chlorine is a pungent smelling gas and it is difficult to solidify it.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
clear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
View Answer play_arrow
question_answer 98) Assertion In the E2 elimination, \[\beta -H\]and leaving group should be antiperiplanar. Reason In the E2 elimination, base always abstracts hindered \[\beta -H.\]
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
clear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
View Answer play_arrow
question_answer 99) Assertion In chemisorptidn, adsorption first increase and then decreases with temperature. Reason Heat keeps on providing more and more activation energy.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
View Answer play_arrow
question_answer 100) Assertion p-dichlorobenzene is less soluble in organic solvents than the corresponding o-isomer. Reason o-dichlorobenzene is polar while p-dichlorobenzene is not.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
clear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
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question_answer 101)
Consider the following statements concerning food chains. I. Removal of 80% tigers from an area resulted in greatly increased growth of vegetation. II. Removal of most of the carnivores resulted in an increased population of deers. III. The length of food chains is generally limited to 3-4 trophic levels due to energy loss. IV. The length of food chains may vary from 2-8 trophic levels.
Which of the above statements are correct?
A)
II and IV
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B)
I, III and V
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C)
II and IV
done
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D)
I and V
done
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question_answer 102)
Given below are four methods (A-D) and their modes of action (1-4) in-achieving contraception. Select their correct matching from the four options that follow Method Mode of action A. The pill 1. Prevents sperms reaching cervix B. Condom 2. Prevents implantation C. Vasectomy 3. Prevents ovulation D. Copper-T 4. Semen contains no sperms
A)
A-3 B-1 C-4 D-2
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B)
A-4 B-1 C-2 D-3
done
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C)
A-3 B-4 C-1 D-2
done
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D)
A-2 B-3 C-1 D-4
done
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question_answer 103)
Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (I-V) make it useful as a storage material? I Easily translocated II Chemically non-reactive III Easily digested by animals IV Osmotically inactive V Synthesized during photosynthesis
The useful properties are
A)
II and III
done
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B)
II and IV
done
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C)
I, II and V
done
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D)
I and V
done
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question_answer 104)
Match the disease in Column I with the appropriate items (pathogen/prevention/ treatment) in Column II Column I Column II A. B. Amoebiasis Diphtheria 1. Treponema pallidum 2. Use only sterilized food and water C. D. Cholera Syphilis 3. DPT vaccine 4. Use oral rehydration therapy
A)
A-1 B-2 C-3 D-4
done
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B)
A-2 B-4 C-1 D-3
done
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C)
A-2 B-1 C-3 D-4
done
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D)
A-2 B-3 C-4 D-1
done
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View Answer play_arrow
question_answer 105) Which one of the following is the correct statement regarding the particular psychotropic drug specified?
A)
Hashish causes alter thought perceptions and hallucinations
done
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B)
Opium stimulates nervous system and causes hallucinations
done
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C)
Morphine leads to delusions and disturbed emotions
done
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D)
Barbiturates cause relaxation and temporary euphoria
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question_answer 106) Which one of the following is the true description about an animal concerned?
A)
Earthworm- The alimentary canal consists of a sequence of pharynx, oesophagus, tomach, gizzard and intestine
done
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B)
Frog- Body divisible into three regions-head, neck and trunk
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C)
Rat- Left kidney is slightly higher in position than the right one
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D)
Cockroach- 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)
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question_answer 107) In cockroach, larval and nymphal characters are maintained by
A)
ecdysone
done
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B)
salivary glands
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C)
parotid gland
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D)
juvenile hormone
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question_answer 108) Which of the following is a transparent tissue?
A)
Tendon
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B)
Fibrous cartilage
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C)
Hyaline cartilage
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D)
All of these
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question_answer 109) Rh factor is present in
A)
all vertebrates
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B)
all mammals
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C)
all reptiles
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D)
man and rhesus monkey only
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question_answer 110) In rabbit, end of a long bone is connected in another by
A)
tendon
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B)
ligaments
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C)
muscle
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D)
cartilage
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question_answer 111) Which of the following cell type .is capable of giving rise to other cell types in sponges?
A)
Thesocytes
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B)
Pinacocytes
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C)
Cnidocytes
done
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D)
Archaeocytes
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question_answer 112) Thigmotaxis is not shown by
A)
Paramecium
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B)
Amoeba
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C)
Ascaris
done
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D)
Hydra
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question_answer 113) Which is correctly matched?
A)
Apiculture - Honey bee
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B)
Pisciculture - Silk moth
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C)
Sericulture - Fish
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D)
Aquaculture - Mosquito
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question_answer 114) Changes that allow the conversion of larva into adult, is called
A)
metagenesis
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B)
alternation
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C)
metamorphosis
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D)
metastasis
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question_answer 115) Animals having a built in thermostat to maintain constant body temperature are known as
A)
biothermic
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B)
poikilothermic
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C)
oligothermic
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D)
homeothermic
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question_answer 116) The intermediate host of Schistosoma is
A)
snail
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B)
mosquito
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C)
housefly
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D)
sheep
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question_answer 117) The islets of Langerhans are found in
A)
pancreas
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B)
stomach
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C)
liver
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D)
alimentary canal
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question_answer 118) The vitamin, which is essential for blood clotting is
A)
vitamin-A
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B)
vitamin-B
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C)
vitamin-C
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D)
vitamin-K
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question_answer 119) The female genital pore of Pheretima posthuma located upon the segment
A)
14th
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B)
16th
done
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C)
18th
done
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D)
15th
done
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question_answer 120) Polyp phase is absent in
A)
Hydra
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B)
Aurelia
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C)
Physalia
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D)
Obelia
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question_answer 121) In frog heart, there are cardiac muscles, which consists of fibres called
A)
Purkinje fibres
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B)
myonemes
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C)
telodendria
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D)
columnae carnae
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question_answer 122) Malpighian tubules are
A)
excretory organs of insects
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B)
excretory organs of frog
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C)
respiratory organs of insects
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D)
endocrine glands of insects
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question_answer 123) LH and FSH are collectively called
A)
oxytocin
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B)
somatotropins
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C)
luteotropic
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D)
gonadotropins
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question_answer 124) Who is known as father of endocrinology?
A)
RH Whittaker
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B)
Pasteur
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C)
Einthoven
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D)
Thomas Addison
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question_answer 125) Which of the following provides most evident proof of evolution?
A)
Fossils
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B)
Morphology
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C)
Embryo
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D)
Vestigial organs
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question_answer 126) In Mollusca, eye is present over a static called
A)
ostracum
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B)
operculum
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C)
ommatophores
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D)
osphradium
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question_answer 127) Among the following, colonial insects are
A)
locusts
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B)
mosquitoes
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C)
white ants
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D)
bed bug
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question_answer 128) In Ascaris, the coelom is
A)
schizocoelom
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B)
pseudocoelom
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C)
true coelom
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D)
haemocoelom
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question_answer 129) Turbellarians are free living
A)
nematodes
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B)
cestodes
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C)
flatworms
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D)
trematodes
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question_answer 130) The characteristic larva of phylum- Coelenterata is
A)
planula
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B)
cysticercus
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C)
rhabdiform
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D)
wriggler
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question_answer 131) In rabbit, head of epididymis present at the head of the testis is called
A)
vas defereris
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B)
cauda epididymis
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C)
gubernaculum
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D)
caput epididymis
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question_answer 132) Tendons and ligaments are specialized types of
A)
nervous tissue
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B)
muscular tissue
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C)
epithelial tissue
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D)
connective tissue
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question_answer 133) In blood, \[C{{O}_{2}}\]in transported majorly as
A)
sodium carbonate
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B)
carboxyhaemoglobin
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C)
bicarbonate
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D)
\[C{{O}_{2}}\]as such
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question_answer 134) Animals undergoes inactive stage during winter, is known as
A)
aestivation
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B)
hibernation
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C)
adaptation
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D)
acclimatization
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question_answer 135) Kupffer cells are present in
A)
liver
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B)
small intestine
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C)
pancreas
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D)
thyroid gland
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question_answer 136) The embryo at 16 celled stage is known as
A)
morula
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B)
gastrula
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C)
blastula
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D)
blastomere
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question_answer 137) Contractile vacuole in protozoan Amoeba is meant for
A)
respiration
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B)
excretion
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C)
locomotion
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D)
osmoregulation
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question_answer 138) Jumping genes in maize were discovered by
A)
Hugo de Vries
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B)
Barbara Me Clintock
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C)
TH Morgan
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D)
Mendel
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question_answer 139) Streptomycin is obtained from
A)
Streptomyces griseus
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B)
S. aureofaciens
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C)
S. venezuelae
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D)
S. ramosus
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question_answer 140) Binomial system of nomenclature was given by
A)
Julian Huxley
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B)
Bentham and Hooker
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C)
Linnaeus
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D)
Casper Bauhin
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question_answer 141) Indusium is found in
A)
algae
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B)
ferns
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C)
moss
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D)
Cycas
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question_answer 142) The vacuole is lined by a membrane called
A)
tonoplast
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B)
jacket
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C)
cell membrane
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D)
tonoplasm
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question_answer 143) Agar-agar is obtained from
A)
Chlorella
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B)
Spirogyra
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C)
Ulothrix
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D)
Gelidium
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question_answer 144) DNA element with ability to change position is called
A)
cistron
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B)
transposon
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C)
intron
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D)
recon
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question_answer 145) Initiation codon is
A)
UUU
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B)
UGA
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C)
AUG
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D)
UAG
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question_answer 146) DNA multiplication is called
A)
translation
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B)
replication
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C)
transduction
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D)
transcription
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question_answer 147) Duramen is present in
A)
inner region of secondary wood
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B)
part of sap wood
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C)
outer region of secondary wood
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D)
region of pericycle
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question_answer 148) In plants, water supply is due to
A)
osmosis
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B)
imbibition
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C)
guttation
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D)
adhesion force
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question_answer 149) Programmed cell death is scientifically termed as
A)
autotomy
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B)
cell lysis
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C)
apoptosis
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D)
None of these
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question_answer 150) Paraffin wax is
A)
ester
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B)
acid
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C)
monohydric alcohol
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D)
cholesterol
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question_answer 151) Which is always present in photochemical smog?
A)
\[{{O}_{3}}\]
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B)
\[C{{O}_{2}}\]
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C)
\[S{{O}_{2}}\]
done
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D)
\[C{{H}_{4}}\]
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question_answer 152) In cell cycle, during which phase, chromosomes are arranged in equatorial plate?
A)
Metaphase
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B)
Anaphase
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C)
Telophase
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D)
Prophase
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question_answer 153) The soil which is transported by wind is known as
A)
colluvial
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B)
eolian
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C)
aluvial
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D)
galcial soil
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question_answer 154) Spindle fibre is made up of
A)
tubulin
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B)
humulin
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C)
intermediate filament
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D)
flagellin
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question_answer 155) Lichen is the pioneer vegetation on which succession?
A)
Hydrosere
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B)
Lithosere
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C)
Psammosere
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D)
Xerosere
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question_answer 156) Law of limiting factors was given by
A)
Leibig
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B)
Blackman
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C)
Calvin
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D)
Arnon
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question_answer 157) In Pinus, male cone bears a large number of
A)
ligules
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B)
anthers
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C)
microsporophylls
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D)
megasporophylls
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question_answer 158) Induction of flowering by low temnerature treatment is
A)
vernalization
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B)
cryobiology
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C)
photoperiodism
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D)
prumiing
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question_answer 159) Decomposers are
A)
autotrophs
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B)
autoheterotrophs
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C)
organotrophs
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D)
heterotrophs
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question_answer 160) Cleavage polyembryony occurs in
A)
Pinus
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B)
Mini Cycas
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C)
Cycas
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D)
Ephedra
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question_answer 161) Edible part of mushroom is
A)
basidiocarp
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B)
secondary mycelium
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C)
primary mycelium
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D)
tertiary mycelium
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question_answer 162) Which of the following plant product is the hardest?
A)
Lignin
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B)
Cutin
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C)
Suberin
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D)
Sporopollenin
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question_answer 163) Calyptra is derived from
A)
archegonia
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B)
capsule
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C)
antheridia
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D)
columella
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question_answer 164) Clamp connections are observed in
A)
Basidiomycetes
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B)
Zygomycetes
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C)
Ascomycetes
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D)
Oomycetes
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question_answer 165) Leaf abscission is caused by
A)
ABA
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B)
cytokinin
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C)
auxin
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D)
gibberellin
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question_answer 166) What is the main cause for the extinction of some species in tropical forest?
A)
Deforestation
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B)
Afforestation
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C)
Pollution
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D)
Soil erosin
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question_answer 167) Most accepted theory for ascent of sap is
A)
capillarity theory
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B)
root pressure theory
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C)
pulsation theory
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D)
Transpiration pull
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question_answer 168) Which enzyme converts glucose into alcohol?
A)
Zymase
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B)
Diastase
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C)
Invertase
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D)
Lipase
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question_answer 169) Which of the following is not the feature of gymnosperms?
A)
Parallel ventation
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B)
Perennial plants
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C)
Distinct branches (long and short branches)
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D)
Xylem with vessels
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question_answer 170) Which of the following is important for muscle contraction and nerve impulse transmission?
A)
\[C{{a}^{2+}}ions\]
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B)
\[M{{g}^{2+}}ions\]
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C)
Both [a] and [b]
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D)
Fe2+ions
done
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question_answer 171) The presence of diversity at the junction of territories of two different habitats is known as
A)
bottle neck effect
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B)
edge effect
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C)
junction effect
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D)
Pasteur effect
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question_answer 172) In which form does the food transported in plants?
A)
Sucrose
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B)
Fructose
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C)
Glucose
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D)
Lactose
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question_answer 173) Lady finger belongs to family
A)
Malvaceae
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B)
Cucurbitaceae
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C)
Liliaceae
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D)
Brassicaceae
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question_answer 174) In Cycas, pollination takes place in
A)
3 celled stage
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B)
4 celled stage
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C)
2 celled stage
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D)
1 celled stage
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question_answer 175) The bioassay of auxin is
A)
avena curvature test
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B)
callus formation
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C)
culture of fungus
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D)
seed dormancy
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question_answer 176) Which of these statements about Huntingtons disease is true?
A)
Genetic tests to detect the presence of the allele responsible for Huntingtons disease do not exist at this time
done
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B)
The onset of Huntingtons disease is typically between birth and three year of age
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C)
There is currently no effective treatment of Huntingtons disease
done
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D)
Huntingtons disease is caused by the expression of a recessive allele
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question_answer 177) Which one is component of ornithine cycle?
A)
Ornithine, citrulline and alanine
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B)
Ornithine, citrulline and arginine
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C)
Amino acid are not used
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D)
Ornithine, citrulline and fumaric acid
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question_answer 178) Chromosome complement with \[2n-1\] is called
A)
monosomy
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B)
nullisomy
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C)
trisomy
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D)
tetrasomy
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question_answer 179) Energy transferred from one trophic level to another is
A)
5%
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B)
10%
done
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C)
15%
done
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D)
20%
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question_answer 180) Small fish get stuck near the bottom of a shark and derives its nutrition from it. This kind of association is called as
A)
antibiosis
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B)
commensalism
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C)
predation
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D)
parasitism
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question_answer 181) Which of the following is not vestigial in man?
A)
Tail vertebrae
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B)
Nails
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C)
Nictitating membrane
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D)
Vermiform appendix
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question_answer 182) A eukaryotic gene contains two kinds of base sequences. Which of these plays an important role in protein synthesis?
A)
Introns
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B)
Exons
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C)
Both [a] and [b]
done
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D)
None of these
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question_answer 183) The number of hydrogen bonds between adenine and thymine in a DNA molecule is
A)
two
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B)
three
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C)
four
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D)
eight
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question_answer 184) The group of anamniota includes
A)
reptiles and birds
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B)
birds and mammals
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C)
fishes an amphibians
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D)
reptiles and mammals
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question_answer 185) The excretory material of bony fish is
A)
urea
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B)
protein
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C)
ammonia
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D)
amino acid
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question_answer 186) The leucocytes contain which of the following in large quantity?
A)
Basophils
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B)
Neutrophils
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C)
Eosinophils
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D)
Monocytes
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question_answer 187) During inspiration, the diaphragm
A)
expands
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B)
shows no change
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C)
contracts and flattens
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D)
relaxes to become dome-shaped
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question_answer 188) The function of pineal body is to
A)
lighten the skin colours
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B)
control sexual behaviour
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C)
regulates the period of puberty
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D)
All of the above
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question_answer 189) Synsacrum of fowl consists of about
A)
29 vertebrae
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B)
3 vertebrae
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C)
16 vertebrae
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D)
single vertebrae
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question_answer 190) Which of the following was formed in S Millers experiment?
A)
Amino acids
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B)
Nucleic acids
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C)
UV radiations
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D)
Microspheres
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question_answer 191) Which of the following variations are temporary and have nothing to do with the last or next generation?
A)
Hereditary variations
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B)
Discontinuous variations
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C)
Environmental variations
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D)
None of the above
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question_answer 192) The highest cranial capacity is/was present in
A)
Java man
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B)
Peking man
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C)
Handy man
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D)
Modern man
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question_answer 193) A marriage between normal visioned man and colourblind woman will produce which of the following types of offspring?
A)
Normal sons and carrier daughters
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B)
Colourblind sons and carrier daughters
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C)
Colourblind sons and 50% carrier daughters
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D)
50% colourblind sons and 50% carrier daughters
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question_answer 194) L-shaped chromosomes are also called
A)
acrocentric
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B)
telocentric
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C)
sub-metacentric
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D)
None of these
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question_answer 195) Which of the following is/are grouped under phanerogams?
A)
Angiosperms
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B)
Gymnosperms
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C)
Pteriodophytes
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D)
Both [a] and [b]
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question_answer 196) Assertion The imbalance in concentration of \[N{{a}^{+}},{{K}^{+}}\]and proteins generates resting potential. Reason To maintain the unequal distribution of \[N{{a}^{+}}\]and \[{{K}^{+}},\]the neurons use electrical energy.
A)
If both Assertion and Reason are true and Reason is the correct explanation of the Assertion.
done
clear
B)
If both Assertion and Reason are true but the Reason is not the correct explanations of Assertion.
done
clear
C)
If Assertion is true, but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
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question_answer 197) Assertion A coenzymes of metal ions that is very tightly bound to enzyme protein is called prosthetic group. Reason A complete, catalytically active enzyme together with its bound prosthetic group is called apoenzyme.
A)
If both Assertion and Reason are true and Reason is the correct explanation of the Assertion.
done
clear
B)
If both Assertion and Reason are true but the Reason is not the correct explanations of Assertion.
done
clear
C)
If Assertion is true, but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
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question_answer 198) Assertion In cymose tap root system, oldest branch lies very near the growing point of the root, while the youngest branch is farthest away from it. Reason In cymose tap root system, the primary root itself stops growing after some
A)
If both Assertion and Reason are true and Reason is the correct explanation of the Assertion.
done
clear
B)
If both Assertion and Reason are true but the Reason is not the correct explanations of Assertion.
done
clear
C)
If Assertion is true, but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
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question_answer 199) Assertion Cyclic pathway of photosynthesis first appeared in some eubacterial species. Reason Oxygen started accumulating in the atmosphere after the non-cyclic pathway of photosynthesis evolved,
A)
If both Assertion and Reason are true and Reason is the correct explanation of the Assertion.
done
clear
B)
If both Assertion and Reason are true but the Reason is not the correct explanations of Assertion.
done
clear
C)
If Assertion is true, but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
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question_answer 200) Assertion Mast cells in the human body release excessive amount of inflammatory chemicals, which cause allergic reactions, Reason Allergens in the environment on reacting human body stimulate mast cells in certain individuals,
A)
If both Assertion and Reason are true and Reason is the correct explanation of the Assertion.
done
clear
B)
If both Assertion and Reason are true but the Reason is not the correct explanations of Assertion.
done
clear
C)
If Assertion is true, but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
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