question_answer 1) In a system of units, the units of mass, length and time are 1 quintal, 1 km and 1 h respectively. In this system 1 N force will be equal to
A)
1 new unit
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B)
129.6 new unit
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C)
125.7 new unit
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D)
\[{{10}^{3}}\,\]new unit
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question_answer 2) If\[\left| \mathbf{\vec{A}}\times \left. {\mathbf{\vec{B}}} \right| \right.=\sqrt{3}\mathbf{\vec{A}}.\mathbf{\vec{B}}\], then the value of\[\left| \mathbf{\vec{A}}+\left. {\mathbf{\vec{B}}} \right| \right.\]is
A)
\[{{({{A}^{2}}+{{B}^{2}}+AB)}^{{1}/{2}\;}}\]
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B)
\[{{\left( {{A}^{2}}+{{B}^{2}}+\frac{AB}{\sqrt{3}} \right)}^{{1}/{2}\;}}\]
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C)
A + B
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D)
\[{{({{A}^{2}}+{{B}^{2}}+\sqrt{3}AB)}^{{1}/{2}\;}}\]
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question_answer 3) If the first one-third of a journey is travelled at20 km/h, next one-third at 40 km/h and the last one-third at 60 km/h. The average speed of whole journey will be
A)
32.7 km/h
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B)
35 km/h
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C)
40 km/h
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D)
45 km/h
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question_answer 4) The value of acceleration due to gravity g at distance r from earths centre such that r < R depend on r according to relation (R = radius of earth)
A)
\[g\propto \,\frac{1}{{{r}^{2}}}\]
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B)
\[g\propto \,\frac{1}{r}\]
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C)
\[g\propto \,\,r\]
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D)
\[g\propto \,\,{{r}^{2}}\]
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question_answer 5) A stone tied at one end of a long string is rotated in a vertical circle about the other end. The minimum speed of the stone at the lowest point so, as to complete the circular path will be
A)
\[\sqrt{gr}\]
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B)
\[\sqrt{2gr}\]
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C)
\[\sqrt{3gr}\]
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D)
\[\sqrt{5gr}\]
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question_answer 6) When a body of mass M is hung from a spring, the spring extends by 1 cm. If the body of mass 2 M be hung from the same spring, the extension of spring will be
A)
1 cm
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B)
2 cm
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C)
0.5 cm
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D)
4 cm
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question_answer 7) A particle executes SHM of amplitude A. If \[{{T}_{1}}\] and \[{{T}_{2}}\] are the times taken by the particle to traverse from 0 to\[\frac{A}{2}\]and from \[\frac{A}{2}\]to A respectively, then\[\frac{{{T}_{1}}}{{{T}_{2}}}\] will be equal to
A)
1
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B)
\[\frac{1}{2}\]
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C)
\[\frac{1}{4}\]
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D)
\[2\]
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question_answer 8) A circular disc of mass M and radius R is rotating with an angular velocity to about an axis passing through its centre and perpendicular to the plane of the disc. A small point like part of mass m detaches from the rim of the disc and continues to move with same angular speed. The angular velocity of remaining disc just after detaching will become
A)
\[\left( \frac{M-2m}{M+m} \right)\omega \]
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B)
\[\left( \frac{M+2m}{M+m} \right)\omega \]
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C)
\[\left( \frac{M-2m}{M-m} \right)\omega \]
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D)
\[\left( \frac{M+2m}{M-m} \right)\omega \]
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question_answer 9) The distance between the successive nodes is
A)
\[\frac{\lambda }{4}\]
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B)
\[\frac{\lambda }{2}\]
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C)
\[\lambda \]
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D)
\[2\lambda \]
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question_answer 10) Dopplers effect in sound takes place when source and observer arc
A)
stationary
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B)
moving with same velocity
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C)
in relative motion
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D)
none of the above
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question_answer 11) The tension in vibrating streched piano wire is 10 N. To double the frequency, the tension in wire must be
A)
5 N
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B)
20 N
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C)
40 N
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D)
80 N
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question_answer 12) The frequency of vibrating air column in closed organ pipe is n. If its length be doubled and radius halved, its frequency will be nearly
A)
n
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B)
n/2
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C)
2 n
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D)
4 n
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question_answer 13) The triple point of water is
A)
\[273.16{}^\circ C\]
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B)
\[273.16\text{ }K\]
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C)
\[273.16{}^\circ F\]
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D)
\[0.15\text{ }K\]
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question_answer 14) The graph of pressure P and \[\left( \frac{1}{Volume,(V)} \right)\]of1 mole of an ideal gas at constant temperature 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 15) 300 J of work is done in sliding a 2 kg block up an inclined plane of height 10 m. Taking \[g=10\,m/{{s}^{2}},\] the work done against friction is
A)
200 J
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B)
100 J
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C)
zero
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D)
1000 J
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question_answer 16) In producing chlorine through electrolysis 100 W power at 125 V is being consumed. How much chlorine per min is liberated? Electro chemical equivalent of chlorine is \[0.367\,\times {{10}^{-6}}\,kg/C\].
A)
17.6mg
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B)
21.3 mg
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C)
24.3mg
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D)
13.6 mg
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question_answer 17) A transistor is operated in common emitter configuration at constant collector voltage \[{{V}_{C}}=1.5\,V\] such that a change in the base current from 100\[\mu A\] to 150\[\mu A\] produces a change in the collector current from 5 mA to 10 mA. The current gain (\[\beta \]) is
A)
67
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B)
75
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C)
100
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D)
50
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question_answer 18) If\[{{C}_{p}}\to {{C}_{v}}\]are molar heats at constant pressure and constant volume respectively and R is gas constant for 1 mole, then the correct relation is
A)
\[{{C}_{p}}-{{C}_{v}}=R\]
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B)
\[{{C}_{p}}-{{C}_{v}}<R\]
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C)
\[{{C}_{p}}-{{C}_{v}}>R\]
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D)
\[{{C}_{p}}-{{C}_{v}}=0\]
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question_answer 19) The temperature of sink of a Carnot engine is 27°C. If the efficiency of engine be 25%, then the temperature of source must be
A)
\[27{}^\circ C\]
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B)
\[127{}^\circ C\]
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C)
\[227{}^\circ C\]
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D)
\[327{}^\circ C\]
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question_answer 20) The temperatures of cold and hot junctions of a thermocouple are 0° and T°C respectively. The thermo emf produced is \[E=AT-\frac{1}{2}B{{T}^{2}}\] If A = 16, B = 0.08, the temperature of inversion will be
A)
\[100{}^\circ C\]
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B)
\[300{}^\circ C\]
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C)
\[400{}^\circ C\]
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D)
\[500{}^\circ C\]
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question_answer 21) A laser beam is coherent because it contains
A)
waves of several wavelengths
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B)
incoherent waves of a single wavelength
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C)
coherent waves of several wavelength
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D)
coherent waves a single wavelength
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question_answer 22) When ordinary light is made incident on a quarter wave plate, the emergent light is
A)
linearly polarized
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B)
circularly polarized
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C)
ellipticallypolarized
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D)
unpolarised
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question_answer 23) An object is placed at a distance of 0.5 m in front of a plane mirror. The distance between object and image will be
A)
0.25 m
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B)
0.5 m
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C)
1.0 m
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D)
2.0 m
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question_answer 24) When a ray of light enters from one medium to another, its velocity is doubled. The critical angle for the ray for total internal reflection will be
A)
\[30{}^\circ \]
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B)
\[60{}^\circ \]
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C)
\[90{}^\circ \]
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D)
information is incomplete
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question_answer 25) Application of a forward bias to a p- n junction
A)
increases the number of donors on the n-side
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B)
increases the electric field in the depletion zone
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C)
increases the potential difference across the depletion zone
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D)
widens the depletion zone
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question_answer 26) The dimensional formula for emf e in MKS system will be
A)
\[\left[ M{{L}^{2}}{{T}^{-2}}{{Q}^{-1}} \right]\]
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B)
\[\left[ M{{L}^{2}}{{T}^{-1}} \right]\]
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C)
\[\left[ M{{L}^{-2}}{{Q}^{-1}} \right]\]
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D)
\[[ML{{T}^{-2}}\,{{Q}^{-2}}]\]
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question_answer 27) The ratio of masses of three wires is 1 : 2 : 3 and that of their lengths is 3 : 2 : 1. If the wires are made of same material, the ratio of their resistances will be
A)
1 : 1 : 1
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B)
1 : 2 : 3
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C)
9 : 4 : 1
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D)
27 : 6 : 1
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question_answer 28)
Two dielectrics of dielectric constants \[{{K}_{1}}\] and \[{{K}_{2}}\] are filled in the gap of parallel plate capacitor as shown in figure. The capacitor has plate each of area A and separation d. The capacitance of the capacitor is
A)
\[\frac{{{\varepsilon }_{0}}({{k}_{1}}+{{k}_{2}})}{2d}\]
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B)
\[\frac{{{\varepsilon }_{0}}A}{2d}\left( \frac{({{k}_{1}}+{{k}_{2}})}{{{k}_{1}}{{k}_{2}}} \right)\]
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C)
\[\frac{{{\varepsilon }_{0}}A}{d}\left( \frac{({{k}_{1}}{{k}_{2}})}{{{k}_{1}}+{{k}_{2}}} \right)\]
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D)
\[\frac{2{{\varepsilon }_{0}}A}{d}\left( \frac{({{k}_{1}}{{k}_{2}})}{{{k}_{1}}+{{k}_{2}}} \right)\]
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question_answer 29) For coulomb force to be operative the least side of atom will be
A)
\[{{10}^{-12}}m\]
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B)
\[{{10}^{-15}}m\]
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C)
\[{{10}^{-10}}m\]
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D)
\[{{10}^{-8}}m\]
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question_answer 30)
Two batteries of emf 4 V and 8 V with internal resistances 1\[\Omega \] and 2\[\Omega \] respectively are connected to an external resistance R = 9 \[\Omega \] as shown in figure. The current in circuit and the potential difference between P and Q respectively will be
A)
\[\frac{1}{9}A,9V\]
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B)
\[\frac{1}{12}A,12V\]
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C)
\[\frac{1}{3}A,3V\]
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D)
\[\frac{1}{6}A,4V\]
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question_answer 31) The currents and voltage in AC circuit are given by \[I=5\sin \left( 100t-\frac{\pi }{2} \right)A,\]V = 200 sin (1001) volt. The power dissipated in the circuit will be
A)
20 W
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B)
40 W
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C)
1000 W
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D)
zero
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question_answer 32)
Cathode rays are passed between the poles of a magnet as shown in figure. The effect of magnetic field is
A)
to increase velocity of rays
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B)
to deflect the rays towards S-pole
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C)
to deflect the rays towards N-pole
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D)
to deflect the rays perpendicular to the plane of paper, upwards
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question_answer 33) The universal property among all substances is
A)
diamagnetism
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B)
paramagnetism
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C)
ferromagnetism
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D)
non-magnetism
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question_answer 34) The similar magnets of magnetic moments \[{{M}_{1}}\] and \[{{M}_{2}}\] are taken and vibrate in a vibration magnetometer with their (i) like poles together (ii) unlike poles together. If the ratio of the time periods is\[\frac{1}{2}\], then the ration of \[{{M}_{1}}\]and \[{{M}_{2}}\left( ie,\frac{{{M}_{1}}}{{{M}_{2}}} \right)\]
A)
0.5
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B)
2
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C)
\[\frac{5}{3}\]
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D)
\[\frac{1}{3}\]
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question_answer 35) Copper has face-centered cubic \[(fcc)\] lattice with interatomic spacing equal to 2.54 \[\overset{0}{\mathop{A}}\,\]. The value of lattice constant for this lattice is
A)
1.27\[\overset{0}{\mathop{A}}\,\]
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B)
5.08 \[\overset{0}{\mathop{A}}\,\]
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C)
2.54\[\overset{0}{\mathop{A}}\,\]
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D)
3.59 \[\overset{0}{\mathop{A}}\,\]
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question_answer 36)
The magnet in figure rotates as shown on a pivot through its centre. At the instant shown, what are the directions of the induced current?
A)
A to B and C to D
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B)
B to A and C to D
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C)
A to B and D to C
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D)
B to A and D to C
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question_answer 37) The emissive power of a black body, is proportional to (T = absolute temperature)
A)
\[E\propto {{T}^{0}}\]
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B)
\[E\propto {{T}^{2}}\]
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C)
\[E\propto {{T}^{4}}\]
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D)
\[E\propto {{T}^{5}}\]
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question_answer 38) Two identical metallic balls, whose temperatures are \[200{}^\circ C\] and \[400{}^\circ C\]respectively, are placed in an enclosure at \[27{}^\circ C\]. The ratio of heat-loss of the balls will be
A)
1 : 2
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B)
1 : 4
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C)
\[\frac{{{(473)}^{4}}-{{(300)}^{4}}}{{{(673)}^{3}}-{{(300)}^{4}}}\]
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D)
\[\frac{{{(200)}^{4}}-{{(27)}^{4}}}{{{(400)}^{3}}-{{(27)}^{4}}}\]
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question_answer 39) The energy of X-ray photons coming out of coolidge tube depends on
A)
kinetic energy of incident electrons
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B)
intensity of incident electrons
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C)
both (a) and (b)
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D)
neither (a) nor (b)
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question_answer 40) When high energetic cathode rays strike a heavy target of high melting point, then the rays produced are
A)
X-rays
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B)
y-rays
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C)
x-rays
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D)
p-rays
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question_answer 41) An X-ray tube is operated at 50 kV. The minimum wavelength of X-rays produced is
A)
0.25\[\overset{0}{\mathop{A}}\,\]
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B)
0.5\[\overset{0}{\mathop{A}}\,\]
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C)
2.5\[\overset{0}{\mathop{A}}\,\]
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D)
1\[\overset{0}{\mathop{A}}\,\]
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question_answer 42) When a triode valve is used as an amplifier the phase difference between input and output voltages is
A)
zero
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B)
\[\frac{\pi }{4}\]
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C)
\[\frac{\pi }{2}\]
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D)
\[\pi \]
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question_answer 43) A point source of light is placed at a distance of 0.5 m from a caesium photocell and under saturation conditions the number of emitted photoelectrons is n. If the source is now placed 1 m from the cell, the number of emitted electrons will be
A)
2n
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B)
n
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C)
\[\frac{n}{2}\]
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D)
\[\frac{n}{4}\]
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question_answer 44) The correct graph representing the relation between energy (E) of photoelectrons and frequency (v) of incident light 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 45) Which of the following is wrongly matched?
A)
Raman effect?scattering of light
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B)
Thomson effect?thermoelectricity
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C)
Hall effect?work function
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D)
Photoelectric effect?quantum nature of light
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question_answer 46) Assertion: The periodic time of hard spring is less as compared to that of a soft string. Reason: The periodic time depends upon the spring constant.
A)
If both 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: In a simple battery circuit the point of lowest potential is positive terminal of the battery. Reason: The current flows towards the point of the higher potential as it flows in such a circuit from the negative to the positive terminal.
A)
If both 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: Magnetic field is not associated with a stationary charge. Reason: A magnetic field can be detected by means of its effect on a current carrying conductor.
A)
If both 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
done
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question_answer 49) Assertion: The ratio of time taken for light emission from an atom to that for release of nuclear energy in fission is 1 : 100. Reason: Time taken of the light emission from an atom is of the order of 10 8 s.
A)
If both 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: Endoscopy involves use of optical fibres to study internal organs. Reason: Optical fibres are based on phenomenon of total internal reflection.
A)
If both 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) Water glass is
A)
\[N{{a}_{2}}Si{{O}_{3}}\]
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B)
\[M{{g}_{2}}Si\]
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C)
\[SiC{{l}_{4}}\]
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D)
\[Ca{{({{H}_{2}}P{{O}_{4}})}_{2}}\]
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question_answer 52) Nesslers reagent is
A)
\[NaHgC{{l}_{4}}\]
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B)
\[{{K}_{2}}Hg{{I}_{4}}\]
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C)
\[Hg{{(N{{H}_{3}})}_{2}}Cl\]
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D)
\[{{K}_{2}}Hg{{I}_{4}}+KOH\]
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question_answer 53) The process of zinc-plating on iron sheet is known as
A)
annealing
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B)
roasting
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C)
galvanization
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D)
smelting
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question_answer 54) Mac Arthur process is used for the extraction of
A)
Au
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B)
Ag
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C)
Cu
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D)
Zn
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question_answer 55) The oxygen obtained from 72 kg of water is
A)
72 kg
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B)
46 kg
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C)
50 kg
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D)
64 kg
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question_answer 56) The correct order of relative acidity is
A)
\[HClO>HCl{{O}_{2}}>HCl{{O}_{3}}>HCl{{O}_{4}}\]
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B)
\[HCl{{O}_{4}}>HCl{{O}_{3}}>HCl{{O}_{2}}>HClO\]
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C)
\[HClO>HCl{{O}_{4}}>HCl{{O}_{2}}>HCl{{O}_{3}}\]
done
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D)
\[HCl{{O}_{3}}>HCl{{O}_{2}}>HCl{{O}_{4}}>HClO\]
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question_answer 57) The oxidation state of \[{{M}^{3+}}\] after removing three electrons is
A)
zero
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B)
+3
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C)
+6
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D)
-6
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question_answer 58) The oil of winter green is
A)
ethyl salicylate
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B)
methyl salicylate
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C)
benzaldehyde
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D)
phenyl salicylate
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question_answer 59) The lightest gas is
A)
\[{{N}_{2}}\]
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B)
\[Ar\]
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C)
\[Rn\]
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D)
He
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question_answer 60) The half-life period of radium is 1580 yr. It remains 1/16 after the years
A)
1580 yr
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B)
3160 yr
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C)
4740 yr
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D)
6320 yr
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question_answer 61) \[_{19}{{K}^{40}}\] and \[{{\,}_{20}}C{{a}^{40}}\] are known as
A)
isotopes
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B)
isobars
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C)
isotones
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D)
Isodiaphers
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question_answer 62) The ore of aluminium is
A)
camallite
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B)
malachite
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C)
galena
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D)
bauxite
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question_answer 63) The equivalent weight of \[KMn{{O}_{4}}\] in acidic medium is
A)
158
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B)
52.67
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C)
31.6
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D)
49
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question_answer 64) The species responsible for nitration is
A)
\[NO_{2}^{+}\]
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B)
\[N{{O}_{3}}\]
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C)
\[N{{O}_{2}}\]
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D)
all of these
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question_answer 65) A compound (60 g) on analysis produce carbon, hydrogen and oxygen 24 g, 4 g and 32g respectively. The empirical formula is
A)
\[{{C}_{2}}{{H}_{2}}{{O}_{2}}\]
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B)
\[{{C}_{2}}{{H}_{4}}{{O}_{2}}\]
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C)
\[C{{H}_{2}}O\]
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D)
\[{{C}_{2}}{{H}_{4}}{{O}_{6}}\]
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question_answer 66) The indicator used for the filtration of weak base and strong acid is
A)
thymol blue
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B)
methyl orange
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C)
phenolphthalein
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D)
fluorescein
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question_answer 67) The reagent used for Friedel-Crafts reaction is
A)
dry ether
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B)
\[AlC{{l}_{3}}\]
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C)
anhydrous \[AlC{{l}_{3}}\]
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clear
D)
\[{{P}_{2}}{{O}_{5}}\]
done
clear
View Answer play_arrow
question_answer 68) For converting a solution of \[\text{100 mL KCl}\] of 0.4 M concentration into a solution of \[\text{KCl}\,\,\text{0}\text{.05}\,\text{M}\] concentration. The quantity of water added is
A)
900 mL
done
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B)
700 mL
done
clear
C)
500 mL
done
clear
D)
300 mL
done
clear
View Answer play_arrow
question_answer 69) Butter is a colloidal solution of
A)
solid-solid
done
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B)
liquid-solid
done
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C)
solid-liquid
done
clear
D)
gas-solid
done
clear
View Answer play_arrow
question_answer 70) Acetone and chloroform reacts to produce
A)
\[C{{H}_{3}}COOH\]
done
clear
B)
\[C{{H}_{3}}OC{{H}_{3}}\]
done
clear
C)
\[{{(C{{H}_{3}})}_{2}}C(OH)CC{{l}_{3}}\]
done
clear
D)
\[C{{H}_{3}}CHO\]
done
clear
View Answer play_arrow
question_answer 71) The Claisen condensation reaction is given by
A)
\[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\]
done
clear
B)
\[C{{H}_{3}}CHO\]
done
clear
C)
\[{{C}_{6}}{{H}_{5}}Cl\]
done
clear
D)
\[HCHO\]
done
clear
View Answer play_arrow
question_answer 72) The laboratory method for the preparation of \[{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}\] is by
A)
\[{{H}_{2}}S{{O}_{4}}\]
done
clear
B)
\[~N{{H}_{4}}HS{{O}_{4}}\]
done
clear
C)
\[N{{a}_{2}}{{O}_{2}}+{{H}_{2}}S{{O}_{4}}\]
done
clear
D)
all of these
done
clear
View Answer play_arrow
question_answer 73) Picric acid is
A)
trinitrotoluene
done
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B)
trinitrobenzene
done
clear
C)
trinitrophenol
done
clear
D)
trinitroaniline
done
clear
View Answer play_arrow
question_answer 74) \[{{\,}_{90}}T{{h}^{232}}\xrightarrow{{}}{{\,}_{82}}P{{b}^{208}}\] The number of \[\alpha \] and \[\beta \] particles emitted during the above reaction is
A)
\[8\alpha \]and \[4\beta \]
done
clear
B)
\[8\alpha \]and \[16\,\beta \]
done
clear
C)
\[4\alpha \]and \[2\beta \]
done
clear
D)
\[6\alpha \]and \[4\beta \]
done
clear
View Answer play_arrow
question_answer 75) The phenomenon of mutation is
A)
chemical change in DNA molecule
done
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B)
production of antibodies
done
clear
C)
synthesis of macromolecules
done
clear
D)
invasion of foreign micro-organism
done
clear
View Answer play_arrow
question_answer 76) The \[cis\] and trans isomers are represented by
A)
pent-1-ene
done
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B)
but-2-ene
done
clear
C)
prop-1-ene
done
clear
D)
but-1-ene
done
clear
View Answer play_arrow
question_answer 77) Duralumin is an alloy of
A)
\[Al+Mn\]
done
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B)
\[Al+Mg+Ni+Mn\]
done
clear
C)
\[Al+Mg+Ni\]
done
clear
D)
\[Al+Mg+Mn+Cu\]
done
clear
View Answer play_arrow
question_answer 78) The incorrect statement for d-block element is
A)
It shows magnetic property
done
clear
B)
It has variable valency
done
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C)
It has tendency for formation of coloured ions
done
clear
D)
It has complete d-orbitals
done
clear
View Answer play_arrow
question_answer 79) The hybridisation present in \[\text{I}{{\text{F}}_{\text{3}}}\] is
A)
\[s{{p}^{3}}d\]
done
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B)
\[s{{p}^{3}}\]
done
clear
C)
\[s{{p}^{3}}{{d}^{2}}\]
done
clear
D)
\[s{{p}^{3}}{{d}^{3}}\]
done
clear
View Answer play_arrow
question_answer 80) The IUPAC name of \[C{{H}_{2}}=CH-\underset{C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}\]
A)
3-prdpyl pentene-1
done
clear
B)
3-ethyl penten-1
done
clear
C)
4-ethyl hexene-1
done
clear
D)
3-ethyl hexene-1
done
clear
View Answer play_arrow
question_answer 81) The relation of \[\Delta H\] and \[\Delta E\] is represented as
A)
\[\Delta H=\Delta E-P\Delta V\]
done
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B)
\[\Delta E=\Delta H-P\Delta V\]
done
clear
C)
\[\Delta H=\Delta E+\Delta nRT\]
done
clear
D)
\[\Delta E=\Delta V+\Delta H\]
done
clear
View Answer play_arrow
question_answer 82) The number of \[\sigma \] and \[\pi \] bonds present in \[CH\equiv C-C{{H}_{2}}-CH=C{{H}_{2}}\]is
A)
\[10\sigma ,3\pi \]
done
clear
B)
\[10\sigma ,2\pi \]
done
clear
C)
\[9\sigma ,3\pi \]
done
clear
D)
\[10\sigma ,2\pi \]
done
clear
View Answer play_arrow
question_answer 83) The incorrect statement for 14g of CO is
A)
It occupies 2.24 L at NTP
done
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B)
It corresponds to \[\frac{1}{2}\] mole of CO
done
clear
C)
It corresponds to same mole of CO and \[{{\text{N}}_{\text{2}}}\]
done
clear
D)
It corresponds to \[3.01\times {{10}^{23}}\] molecules of CO
done
clear
View Answer play_arrow
question_answer 84) \[N{{H}_{4}}Cl(s)\xrightarrow{{}}N{{H}_{3}}(g)+HCl(g)\] When the above reaction occurs, the entropy
A)
remains same
done
clear
B)
decreases
done
clear
C)
increases
done
clear
D)
none of these
done
clear
View Answer play_arrow
question_answer 85) Carbogen is a mixture of
A)
\[C{{O}_{2}}+\text{ }{{N}_{2}}\]
done
clear
B)
\[CO+{{O}_{2}}\]
done
clear
C)
\[C{{O}_{2}}+{{O}_{2}}\]
done
clear
D)
\[C+{{H}_{2}}+{{N}_{2}}\]
done
clear
View Answer play_arrow
question_answer 86) The carboxylic acid which reduces Tollens reagent is
A)
\[\text{HCOOH}\]
done
clear
B)
\[C{{H}_{3}}COOH\]
done
clear
C)
\[~C{{H}_{3}}C{{H}_{2}}COOH\]
done
clear
D)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOH\]
done
clear
View Answer play_arrow
question_answer 87) The dissociation constant of two acids \[\text{H}{{\text{A}}_{\text{1}}}\] and \[\text{H}{{\text{A}}_{2}}\] are \[3.0\times {{10}^{-4}}\] and \[1.8\times {{10}^{-5}}\] respectively. The relative strengths of the acids is
A)
1 : 16
done
clear
B)
1 : 4
done
clear
C)
4 : 1
done
clear
D)
16 : 1
done
clear
View Answer play_arrow
question_answer 88) The moderator used in nuclear reactor is
A)
TEL
done
clear
B)
\[{{D}_{2}}O\]
done
clear
C)
\[{{H}_{2}}{{O}_{2}}\]
done
clear
D)
\[R-O-R\]
done
clear
View Answer play_arrow
question_answer 89) One mole of \[C{{H}_{4}}\]contains
A)
4 g atoms of hydrogen
done
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B)
3.0 g atoms of carbon
done
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C)
\[6.02\times {{10}^{23}}\] atoms of hydrogen
done
clear
D)
\[1.81\times {{10}^{23}}\] molecules of \[C{{H}_{4}}\]
done
clear
View Answer play_arrow
question_answer 90) The electron affinity of Be is similar to
A)
He
done
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B)
B
done
clear
C)
Li
done
clear
D)
Na
done
clear
View Answer play_arrow
question_answer 91) The oxidation number of sulphur in \[\text{N}{{\text{a}}_{\text{2}}}{{\text{S}}_{\text{2}}}{{\text{O}}_{\text{3}}}\] is
A)
+1
done
clear
B)
+2
done
clear
C)
+3
done
clear
D)
-3
done
clear
View Answer play_arrow
question_answer 92) The number of double bonds in gammexane is
A)
0
done
clear
B)
1
done
clear
C)
2
done
clear
D)
3
done
clear
View Answer play_arrow
question_answer 93) Benzaldehyde is converted to benzyl alcohol by
A)
Wurtz reaction
done
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B)
Cannizaro reaction
done
clear
C)
Fittig reaction
done
clear
D)
Wurtz-Fittig reaction
done
clear
View Answer play_arrow
question_answer 94) Sindoor is represented by
A)
\[Pb{{(N{{O}_{3}})}_{2}}\]
done
clear
B)
\[PbC{{O}_{3}}.Pb{{(OH)}_{2}}\]
done
clear
C)
\[Pb{{(OH)}_{2}}.4PbC{{O}_{3}}\]
done
clear
D)
\[P{{b}_{3}}{{O}_{4}}\]
done
clear
View Answer play_arrow
question_answer 95) The most polar bond is
A)
\[OF\]
done
clear
B)
\[NCl\]
done
clear
C)
\[NF\]
done
clear
D)
\[NN\]
done
clear
View Answer play_arrow
question_answer 96) Assertion: A spectral line will be seen for a \[2{{p}_{x}}-2{{p}_{y}}\] transition. Reason: Energy is released in the form of wave of light when the electron drops from \[2{{p}_{x}}\] to \[2{{p}_{y}}\] orbital.
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 97) Assertion: Carboxypeptidase is an exopeptidase Reason: It cleaves the N-terminal bond.
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: Amongst the halogen fluorine can oxidise the elements to highest oxidation state. Reason: Due to small size of fluoride ion. It is difficult to oxidise fluoride ion to fluorine. Hence, reverse reaction takes place more easily.
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: Liquid \[\text{N}{{\text{H}}_{\text{3}}}\] is used for refrigeration. Reason: Liquid \[\text{N}{{\text{H}}_{\text{3}}}\]quickly vaporize.
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 100) Assertion: \[\sigma \] is strong while \[\pi \]is a weak bond. Reason: Atoms rotate freely about \[\pi \] bond.
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 101) Prokaryotic genetic system has
A)
DNA and histone
done
clear
B)
DNA and no histone
done
clear
C)
no DNA and histone
done
clear
D)
no DNA and no histone
done
clear
View Answer play_arrow
question_answer 102) Law of Mendel which is not completely applicable is
A)
co-dominance
done
clear
B)
law of segregation
done
clear
C)
law of independent assortment
done
clear
D)
law of dominance
done
clear
View Answer play_arrow
question_answer 103) Structural unit of human kidney is
A)
nephron
done
clear
B)
ureter
done
clear
C)
loop of Henle
done
clear
D)
Bowmans capsule
done
clear
View Answer play_arrow
question_answer 104) In which era life was absent ?
A)
Archeozoic
done
clear
B)
Paleozoic
done
clear
C)
Proterozoic
done
clear
D)
Azoic
done
clear
View Answer play_arrow
question_answer 105) Net gain of ATP in prokaryotes from a molecule of glucose when oxidized is
A)
40
done
clear
B)
38
done
clear
C)
36
done
clear
D)
34
done
clear
View Answer play_arrow
question_answer 106) Sub-divisions in cell cycle are
A)
\[S,\,{{G}_{2}},\,M\] and \[{{G}_{1}}\]
done
clear
B)
\[{{G}_{1}},\,S,\,{{G}_{2}}\] and M
done
clear
C)
\[S,\,M,\,{{G}_{1}}\] and \[{{G}_{1}}\]
done
clear
D)
\[{{G}_{2}},\,{{G}_{1}},\,M\] and S
done
clear
View Answer play_arrow
question_answer 107) Legume plants are important for atmosphere because they
A)
help in \[N{{O}_{2}}\] fixation
done
clear
B)
do not help in \[N{{O}_{2}}\] fixation
done
clear
C)
increase soil fertility
done
clear
D)
all of the above
done
clear
View Answer play_arrow
question_answer 108) Aquatic photo diffraction is
A)
euphoric, disphotic and aphotic
done
clear
B)
aphotic, euphoric and disphotic
done
clear
C)
euphoric, aphotic and disphotic
done
clear
D)
euphotic, disphotic and aphotic
done
clear
View Answer play_arrow
question_answer 109) Community is
A)
a group of independent and interacting population of different species
done
clear
B)
a group of independent and interacting population of same species
done
clear
C)
a group of independent and interacting population of same species in a specific area
done
clear
D)
a group of independent and interacting population of different species in a specific area
done
clear
View Answer play_arrow
question_answer 110) Abiogenesis is the
A)
origin of life from non-living organism
done
clear
B)
origin of life from living organism
done
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C)
origin of viruses and microbes
done
clear
D)
spontaneous generation
done
clear
View Answer play_arrow
question_answer 111) Which one of the following couple were suggested by doctors to not have more than one child ?
A)
\[R{{h}^{+}}\] male and \[R{{h}^{-}}\] female
done
clear
B)
\[R{{h}^{-}}\] male and \[R{{h}^{+}}\] female
done
clear
C)
\[R{{h}^{+}}\] male and \[R{{h}^{+}}\] female
done
clear
D)
\[R{{h}^{-}}\] male and \[R{{h}^{+}}\] female
done
clear
View Answer play_arrow
question_answer 112) First evidence of ceremonial burial of dead body and belief in religion have been found with fossil of
A)
Neanderthal
done
clear
B)
Cro-magnon
done
clear
C)
Homo erectus
done
clear
D)
Homo habilis
done
clear
View Answer play_arrow
question_answer 113) Pollution is not caused by
A)
thermal power plant
done
clear
B)
Automobile
done
clear
C)
radioactive power plant
done
clear
D)
hydroelectric power plant
done
clear
View Answer play_arrow
question_answer 114) Peacock eats a snake and snake eats frog and frog eats insect while insect eats green plant, then position of peacock is
A)
primary producer
done
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B)
secondary producer
done
clear
C)
Decomposer
done
clear
D)
top at the apex of food pyramid
done
clear
View Answer play_arrow
question_answer 115) According to one of the most accepted theory, the earth atmosphere before any life had originated consisted of \[{{H}_{2}}O,\,{{H}_{2}},\,N{{H}_{2}}\] and
A)
\[C{{H}_{4}}\]
done
clear
B)
\[{{O}_{2}}\]
done
clear
C)
\[{{N}_{2}}\]
done
clear
D)
none of these
done
clear
View Answer play_arrow
question_answer 116) Tropical dense forests are due to
A)
low rainfall and low temperature
done
clear
B)
high rainfall and low temperature
done
clear
C)
low rainfall and high temperature
done
clear
D)
high rainfall and high temperature
done
clear
View Answer play_arrow
question_answer 117) Term ecosystem was given by
A)
Odum
done
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B)
Koestler
done
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C)
Tansley
done
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D)
Mobius and Forbes
done
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View Answer play_arrow
question_answer 118) Acoustic spots in frog are present in
A)
ossious labyrinth
done
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B)
Carotid
done
clear
C)
membranous labyrinth
done
clear
D)
all of the above
done
clear
View Answer play_arrow
question_answer 119) Minimum regeneration power is present in
A)
nervous tissue
done
clear
B)
connective tissue
done
clear
C)
epithelial tissue
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 120) Down syndrome is due to
A)
chromosome number increase in 21st pair autosome
done
clear
B)
chromosome number decrease in 21st pair autosome
done
clear
C)
chromosome number increase in 18th pair autosome
done
clear
D)
chromosome number decrease in 18th pair autosome
done
clear
View Answer play_arrow
question_answer 121) Opening of flower is an example of
A)
spontaneous movement
done
clear
B)
hyponastic movement
done
clear
C)
epinastic movement
done
clear
D)
cleistogamous movement
done
clear
View Answer play_arrow
question_answer 122) 5th June is celebrated as
A)
world forest day
done
clear
B)
world environment day
done
clear
C)
world red cross day
done
clear
D)
world food day
done
clear
View Answer play_arrow
question_answer 123) A place was rocky and barren but now there is a green forest; the sequence of origin is
A)
lichen, moss, herbs, shrubs
done
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B)
moss, lichen, herbs, shrubs
done
clear
C)
lichen, moss, shrubs, herbs
done
clear
D)
shrubs, herbs, moss, lichen
done
clear
View Answer play_arrow
question_answer 124) Plasmids occur in
A)
viruses
done
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B)
chromosomes
done
clear
C)
bacteria
done
clear
D)
chloroplasts
done
clear
View Answer play_arrow
question_answer 125) Alleles are
A)
alternate forms of a gene
done
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B)
homologous chromosome
done
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C)
pair of sex chromosome
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 126) Genetic recombination is due to
A)
fertilization and meiosis
done
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B)
mitosis and meiosis
done
clear
C)
fertilization and mitosis
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 127) Ribosome may also be called
A)
microsome
done
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B)
dictyosome
done
clear
C)
ribonucleo protein
done
clear
D)
oxysomes
done
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View Answer play_arrow
question_answer 128) Quiescent centre is present in
A)
shoot apex
done
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B)
root apex
done
clear
C)
both (a) and (b)
done
clear
D)
meristematic tissue
done
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View Answer play_arrow
question_answer 129) Structure of nuclear membrane helps in
A)
organisation of the spindle
done
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B)
synapsis of homologous chromosome
done
clear
C)
nucleo-cytoplasmic exchange of material
done
clear
D)
anaphasic separation of daughter chromosome
done
clear
View Answer play_arrow
question_answer 130) Micro-nutrients are
A)
as important as macro-nutrient but are required in small amount
done
clear
B)
less important than macro-nutrient
done
clear
C)
called micro as they play only a minor role in plant nutrition
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 131) Colour blindness is due to
A)
recessive female chromosome
done
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B)
dominant female chromosome
done
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C)
recessive male chromosome
done
clear
D)
dominant male chromosome
done
clear
View Answer play_arrow
question_answer 132) Darwins book ?Origin of New Species by Natural Selection? was published in
A)
1809
done
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B)
1859
done
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C)
1857
done
clear
D)
1869
done
clear
View Answer play_arrow
question_answer 133) Which one of the following pair is correctly matched ?
A)
Aed.es - Plague
done
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B)
Anopheles - Malaria
done
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C)
House fly - Yellow fever
done
clear
D)
Body louse - Typhoid
done
clear
View Answer play_arrow
question_answer 134) Mosses occurs in moist place because
A)
they can not grow on land
done
clear
B)
their gamete fuse in water
done
clear
C)
they lack vascular tissue
done
clear
D)
they lack root and stomata
done
clear
View Answer play_arrow
question_answer 135) During photosynthesis
A)
\[{{O}_{2}}\] evolved comes from \[C{{O}_{2}}\]
done
clear
B)
ATP is formed
done
clear
C)
ATP is not formed
done
clear
D)
Water is required as medium but it does not take part in photosynthesis
done
clear
View Answer play_arrow
question_answer 136) Smallest plant which contain green pigment such as higher green plant is
A)
Schizomycetes
done
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B)
Rhodophyceae
done
clear
C)
Chlorophyceae
done
clear
D)
Phaeophyceae
done
clear
View Answer play_arrow
question_answer 137) Quantasomes are found in
A)
mitochondria
done
clear
B)
chloroplast
done
clear
C)
lysosome
done
clear
D)
endoplasmic reticulum
done
clear
View Answer play_arrow
question_answer 138) Barr body is associated with
A)
sex chromosome of female
done
clear
B)
sex chromosome of male
done
clear
C)
autosome of female
done
clear
D)
autosome of male
done
clear
View Answer play_arrow
question_answer 139) Endosperm of angiospermic plant is
A)
triploid
done
clear
B)
diploid
done
clear
C)
haploid
done
clear
D)
tetraploid
done
clear
View Answer play_arrow
question_answer 140) Source of energy in an ecosystem is
A)
Sun
done
clear
B)
ATP
done
clear
C)
sugar made by plant
done
clear
D)
green plant
done
clear
View Answer play_arrow
question_answer 141) Pyramid of energy is always
A)
Upright
done
clear
B)
Downward
done
clear
C)
upright in pond and downward in forest
done
clear
D)
upright in forest and downward in pond
done
clear
View Answer play_arrow
question_answer 142) Effect of pollution is first marked on
A)
micro-organisms
done
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B)
green vegetation of an area
done
clear
C)
food crop
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 143) Pseudocoelom is the characteristic of
A)
Annelida
done
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B)
Echinodermata
done
clear
C)
Mollusca
done
clear
D)
Nematoda
done
clear
View Answer play_arrow
question_answer 144) Forests of nephridia are present in
A)
pharyngeal region
done
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B)
clitellar region
done
clear
C)
anal region
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 145) Golgi body originates from
A)
Lysosome
done
clear
B)
endoplasmic reticulum
done
clear
C)
Mitochondria
done
clear
D)
cell membrane
done
clear
View Answer play_arrow
question_answer 146) Term basal body is associated with the development of
A)
cilia and flagella
done
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B)
cell plate
done
clear
C)
phragmoplast
done
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D)
kinetochore
done
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question_answer 147) Heart of elephant is
A)
neurogenic
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B)
myogenic
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C)
both (a) and (b)
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D)
none of these
done
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question_answer 148) Ciliated epithelium is present in
A)
trachea
done
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B)
ureter
done
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C)
intestine
done
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D)
nasal chamber
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question_answer 149) Deltoid ridge is present in
A)
humerus
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B)
tibia-fibula
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C)
radio-ulna
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D)
femur
done
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question_answer 150) One haemoglobin carries how many molecules of \[{{O}_{2}}\]?
A)
4
done
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B)
2
done
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C)
6
done
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D)
8
done
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question_answer 151) Pulp cavity of teeth is lined by
A)
odontoblast
done
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B)
chondroblast
done
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C)
osteoblast
done
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D)
amyloblast
done
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question_answer 152) Which of the following is not a source of vitamin-A?
A)
Carrot
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B)
Mango
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C)
Apple
done
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D)
Yeast
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question_answer 153) Cycas revoluta is popularly known as
A)
date palm
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B)
sago palm
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C)
sea palm
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D)
royal palm
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question_answer 154) Circinate vernation is present in
A)
moss
done
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B)
fern
done
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C)
algae
done
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D)
gymnosperm
done
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question_answer 155) Wilting of plant is because
A)
xylem is blocked
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B)
phloem is blocked
done
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C)
epidermis and few roots are removed
done
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D)
pith is removed
done
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question_answer 156) Auxanometer is used to detect
A)
respiration
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B)
transpiration
done
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C)
plant movement
done
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D)
growth
done
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question_answer 157) Separation of amino acid and carboxylic groups is called
A)
deamination
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B)
excretion
done
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C)
egestion
done
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D)
transamination
done
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question_answer 158) Pelvic girdle of rabbit consists of
A)
ileum, ischium and pubis
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B)
ileum, ischium and coracoids
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C)
coracoid, scapula and clavicle
done
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D)
ileum, coracoid and scapula
done
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question_answer 159) Cuticle is secreted by
A)
epidermis
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B)
endodermis
done
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C)
both (a) and (b)
done
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D)
hypodermis
done
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question_answer 160) Smallest bacteria is
A)
Spirillum
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B)
Bacillus
done
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C)
Dialister
done
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D)
None of these
done
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question_answer 161) Root hair absorb water from the soil on account of
A)
turgor pressure
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B)
osmotic pressure
done
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C)
suction pressure
done
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D)
root pressure
done
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question_answer 162) Difference between bone and cartilage is
A)
Haversian canal
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B)
blood vessel
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C)
lymph vessel
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D)
all of these
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question_answer 163) Function of mitochondria is
A)
excretion
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B)
respiration
done
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C)
digestion
done
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D)
excretion and respiration
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question_answer 164) Hydrolytic enzymes are stored in
A)
Golgi bodies
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B)
lysosomes
done
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C)
endoplasmic reticulum
done
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D)
mitochondria
done
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question_answer 165) Lipid molecules in plasma membrane are arranged in which manner ?
A)
Scattered
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B)
Series
done
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C)
Alternate
done
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D)
Head parallel
done
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question_answer 166) Secretion of gastric juice is controlled by
A)
gastrin
done
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B)
cholecystokinin
done
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C)
enterogastrin
done
clear
D)
none of these
done
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question_answer 167) Meissner corpuscles are responsible for
A)
heat and present in skin
done
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B)
cold and present in skin
done
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C)
pressure and present in skin
done
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D)
pain and present in skin
done
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question_answer 168) Taj Mahal marble is affected by
A)
\[S{{O}_{2}}\]
done
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B)
\[{{O}_{2}}\]
done
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C)
\[{{O}_{3}}\]
done
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D)
\[N{{O}_{2}}\]
done
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question_answer 169) Minimata disease first occurred in
A)
Japan
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B)
China
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C)
Korea
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D)
Russia
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question_answer 170) Sexual reproduction leads to
A)
genetic recombination
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B)
polyploidy
done
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C)
aneuploidy
done
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D)
euploidy
done
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question_answer 171) Parathormone is secreted during
A)
increased blood calcium level
done
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B)
decreased blood calcium level
done
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C)
increased blood sugar level
done
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D)
decreased blood sugar level
done
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question_answer 172) Which of the following is purely motor cranial nerve?
A)
Olfactory
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B)
Optic
done
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C)
Abducens
done
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D)
Vagus
done
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question_answer 173) Which of the following soil is transported by air ?
A)
Alluvial
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B)
Aerial
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C)
Eolian
done
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D)
Glacial
done
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question_answer 174) Plants growing in dry and saline soil are called
A)
xerophyte
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B)
hydrophyte
done
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C)
halophyte
done
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D)
heliophyte
done
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question_answer 175) Which one of the following is well-developed present in hydrophyte ?
A)
Aerenchyma
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B)
Collenchyma
done
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C)
Stomata
done
clear
D)
Root system
done
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question_answer 176) Largest smooth muscle is present in
A)
leg
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B)
thigh
done
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C)
uterus of pregnant woman
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D)
urethra
done
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question_answer 177) Respiratory centre is present in
A)
cerebellum
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B)
cerebrum
done
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C)
medulla oblongata
done
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D)
hypothalamus
done
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question_answer 178) Kala-azar is caused by
A)
Trypanosoma cruzi
done
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B)
Leishmania donovani
done
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C)
Trypanosoma brucei
done
clear
D)
Trypanosoma gambeinse
done
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question_answer 179) Recapitulation theory was proposed by
A)
E. Haeckel
done
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B)
Mendel
done
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C)
Hugo de Vries
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D)
von Baer
done
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question_answer 180) Pseudocoelom developed from
A)
embryonic mesoderm
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B)
archenteron
done
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C)
blastocoels
done
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D)
blastopore lip
done
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question_answer 181) Study of environment and animal relation is
A)
ecosystem
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B)
Phytosociology
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C)
biotic community
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D)
Ecology
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question_answer 182) A root was described as it adventitious root because
A)
arose from plumule
done
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B)
was used variously for storage of food
done
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C)
was swollen
done
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D)
was growing in marshy place
done
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question_answer 183) Terracing is done in
A)
desert areas
done
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B)
hilly areas
done
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C)
dry areas
done
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D)
plain areas
done
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question_answer 184) Step of respiration are controlled by
A)
substrates
done
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B)
enzymes
done
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C)
hormone
done
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D)
bile juice
done
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question_answer 185) Absorption of \[{{H}_{2}}O\] in DCT is controlled by
A)
ADH
done
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B)
ACTH
done
clear
C)
LH
done
clear
D)
Oxytocin
done
clear
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question_answer 186) Alary muscle is associated with
A)
heart and circulation
done
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B)
Malpighian tubules and excretion
done
clear
C)
trachea and respiration
done
clear
D)
none of the above
done
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question_answer 187) Which of the following is an insect?
A)
Moth
done
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B)
Mites
done
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C)
Prawn
done
clear
D)
Scorpion
done
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question_answer 188) Removal of ring wood of tissue outside the vascular cambium from the tree trunk kills it because
A)
water cannot move up
done
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B)
food does not travel down and root become starved
done
clear
C)
shoot become starved
done
clear
D)
annual ring are not produced
done
clear
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question_answer 189) Wisdom teeth in human is
A)
3rd molar and 4 in number
done
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B)
3rd molar and 2 in number
done
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C)
2nd molar and 4 in number
done
clear
D)
2nd molar and 2 in number
done
clear
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question_answer 190) Choanocyte is the characteristic feature of
A)
sponges
done
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B)
arthropods
done
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C)
Annelida
done
clear
D)
none of these
done
clear
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question_answer 191) Which one of the following triplet codes, is correctly matched with the specificity for an amino in protein synthesis or as start or stop codon?
A)
UGU-Leucine
done
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B)
UAC-Tyrosine
done
clear
C)
UCG-Start
done
clear
D)
UUU-Stop
done
clear
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question_answer 192) Tobacco mosaic virus is a tubular filament of size
A)
\[300\times 20\,\,nm\]
done
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B)
\[700\times 30\,\,nm\]
done
clear
C)
\[300\times 10\,\,nm\]
done
clear
D)
\[300\times 5\,\,nm\]
done
clear
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question_answer 193) ELISA is used to detect viruses where the key reagent is
A)
DNA probe
done
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B)
RNAse
done
clear
C)
alkaline phosphate
done
clear
D)
catalase
done
clear
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question_answer 194) During translation initiation in prokaryoetes, a GTP molecules is needed in
A)
association of 30s, mRNA with formyl met tRNA
done
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B)
association of 50s subunit of ribosome with initiation complex
done
clear
C)
formation of formyl met tRNA
done
clear
D)
binding of 30s subunit of ribosome with mRNA
done
clear
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question_answer 195) What is true about T-lymphocytes in mammals ?
A)
They scavenge damaged cells and cellular debris
done
clear
B)
There are produced in thyroid
done
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C)
There are three main types-cytotoxic T-cells, helpes T-cells and suppressor T-cells
done
clear
D)
These originate in lymphoid tissues.
done
clear
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question_answer 196) Assertion: Prokaryotes reproduce asexually by binary fission. Reason: Because this division produce1 two daughter cells identical to the parent cell
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 197) Assertion: In sponges, archaeocytes are totipotent. Reason: They give rise to all types of amoebocytes and are self-replicating.
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 198) Assertion: It is advantageous to give the polio vaccines orally. Reason: It prevents reinfection by causing intestinal immunity.
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 199) Assertion: Alcohol acts as sedative. Reason: Sweating is enhanced by alcohol and so it is endothermic.
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 200) Assertion: Supernumerary chromosomes do not usually have any effect on the phenotype and hence, are genetically un-necessary. Reason: In some plants supernumerary chromosomes result in decreased vigour.
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