-
question_answer1) The value of Planck's constant is:
A)
\[6.63\times {{10}^{-34}}\,J/s\]
done
clear
B)
\[6.63\times {{10}^{-34}}\,kg-m/s\]
done
clear
C)
\[6.63\times {{10}^{-34}}\,kg-{{m}^{2}}\]
done
clear
D)
\[6.63\times {{10}^{-34}}\,J-s\]
done
clear
View Answer play_arrow
-
question_answer2) A disc is rotating with angular velocity \[\omega \]. If a child sits on it, what is conserved?
A)
Linear momentum
done
clear
B)
Angular momentum
done
clear
C)
Kinetic energy
done
clear
D)
Moment of inertia
done
clear
View Answer play_arrow
-
question_answer3) A mass is suspended separately by two springs of spring constants \[{{k}_{1}}\] and \[{{k}_{2}}\] in successive order. The time periods of oscillations in the two cases are \[{{T}_{1}}\] and \[{{T}_{2}}\] respectively. If the same mass be suspended by connecting the two springs in parallel, (as shown in figure) then the time period of oscillations is T. The correct relation is:
A)
\[{{T}^{2}}=T_{1}^{2}+T_{2}^{2}\]
done
clear
B)
\[{{T}^{-2}}=T_{1}^{-2}+T_{2}^{-2}\]
done
clear
C)
\[{{T}^{-1}}=T_{1}^{-1}+T_{2}^{-1}\]
done
clear
D)
\[T={{T}_{1}}+{{T}_{2}}\]
done
clear
View Answer play_arrow
-
question_answer4) When a damped harmonic oscillator completes 100 oscillations, its amplitude is reduced to \[\frac{1}{3}\]of its initial value. What will be its amplitude 'when it completes 200 oscillations?
A)
\[\frac{1}{5}\]
done
clear
B)
\[\frac{2}{3}\]
done
clear
C)
\[\frac{1}{6}\]
done
clear
D)
\[\frac{1}{9}\]
done
clear
View Answer play_arrow
-
question_answer5) A circular disc is to be made using iron and aluminium. To keep its moment of inertia maximum about a geometrical axis, it should be so prepared that:
A)
aluminium at interior and iron surrounds it
done
clear
B)
iron at interior and aluminium surrounds it
done
clear
C)
aluminium and iron layers in alternate order
done
clear
D)
sheet of iron is used at both external surfaces and aluminium sheet as inner material
done
clear
View Answer play_arrow
-
question_answer6) The displacement of particle between maximum potential energy position and maximum kinetic energy position in simple harmonic motion is:
A)
\[\pm \frac{a}{2}\]
done
clear
B)
\[\pm a\]
done
clear
C)
\[\pm 2a\]
done
clear
D)
\[\pm 1\]
done
clear
View Answer play_arrow
-
question_answer7) A solid sphere of radius R is placed on a smooth horizontal surface. A horizontal force F is applied at height h from the lowest point. For the maximum acceleration of the centre of mass:
A)
h = R
done
clear
B)
h = 2 R
done
clear
C)
h = 0
done
clear
D)
the acceleration will be same whatever h may be
done
clear
View Answer play_arrow
-
question_answer8) P is the point of contact of a wheel and the ground. The radius of wheel is 1. m. The wheel rolls on the ground without slipping. The displacement of point P when wheel completes half rotation is:
A)
2 m
done
clear
B)
\[\sqrt{{{\pi }^{2}}+4}\,m\]
done
clear
C)
\[\pi \,m\]
done
clear
D)
\[\sqrt{{{\pi }^{2}}+2}\,m\]
done
clear
View Answer play_arrow
-
question_answer9) A body of mass m is placed on earth's surface. It is then taken from earth's surface to a height h = 3R, then the change in gravitational potential energy is:
A)
\[\frac{mgh}{R}\]
done
clear
B)
\[\frac{2}{3}\,mgR\]
done
clear
C)
\[\frac{3}{4}mgR\]
done
clear
D)
\[\frac{mgR}{2}\]
done
clear
View Answer play_arrow
-
question_answer10) An object of mass 3 kg is at rest. If a force \[\vec{F}=(6{{t}^{2}}\,\hat{i}+4t\,\hat{j})\,N\] is applied on the object, then the velocity of the object at t = 3 s is:
A)
\[\text{18\hat{i} + 3\hat{j}}\]
done
clear
B)
\[\text{18\hat{i} + 6\hat{j}}\]
done
clear
C)
\[\text{3\hat{i} + 18\hat{j}}\]
done
clear
D)
\[\text{18\hat{i} + 4\hat{j}}\]
done
clear
View Answer play_arrow
-
question_answer11) If kinetic energy of a body is increased by 300% then percentage change in momentum will be:
A)
100%
done
clear
B)
150%
done
clear
C)
265%
done
clear
D)
73.2%
done
clear
View Answer play_arrow
-
question_answer12) A rod is of length 3 m and its mass acting per unit length is directly proportional to distance x from its one end. The centre of gravity of the rod from that end will be at:
A)
1.5 m
done
clear
B)
2.0 m
done
clear
C)
2.5 m
done
clear
D)
3.0 m
done
clear
View Answer play_arrow
-
question_answer13) A block of mass 10 kg is placed on a rough horizontal surface having coefficient of friction \[\mu \] = 0.5. If a horizontal force of 100 N is applied on it, then the acceleration of the block wilt be: \[(g=10\,m/{{s}^{2}})\]
A)
\[15\,\,m/{{s}^{2}}\]
done
clear
B)
\[10\,\,m/{{s}^{2}}\]
done
clear
C)
\[5\,\,m/{{s}^{2}}\]
done
clear
D)
\[0.5\,\,m/{{s}^{2}}\]
done
clear
View Answer play_arrow
-
question_answer14) A lift of mass 1000 kg is moving upwards with an acceleration of \[1\,m/{{s}^{2}}\]. The tension developed in the string, which is connected to lift is: \[(g=9.8\,m/{{s}^{2}})\]
A)
9800 N
done
clear
B)
10800 N
done
clear
C)
11000 N
done
clear
D)
10000 N
done
clear
View Answer play_arrow
-
question_answer15) A particle (A) is dropped from a height and another particle (B) is projected in horizontal direction with a speed of 5 m/s from the same height. Then the correct statement is:
A)
particle (A) will reach the ground earlier than particle (B)
done
clear
B)
particle (B) will reach the ground earlier than particle (A)
done
clear
C)
both the particles will reach the ground simultaneously
done
clear
D)
both the particles will reach the ground with the same speed
done
clear
View Answer play_arrow
-
question_answer16) What is the cause of "Green house effect"?
A)
Infrared rays
done
clear
B)
Ultraviolet rays
done
clear
C)
X-rays
done
clear
D)
Radio-waves
done
clear
View Answer play_arrow
-
question_answer17) Which of the following is close to an ideal black body:
A)
black lamp
done
clear
B)
cavity maintained at constant temperature
done
clear
C)
platinum black
done
clear
D)
a lamp of charcoal heated to high temperature
done
clear
View Answer play_arrow
-
question_answer18) Wien's displacement law expresses relation between:
A)
wavelength corresponding to maximum energy and absolute temperature
done
clear
B)
radiated energy and wavelength
done
clear
C)
emissive power and temperature
done
clear
D)
colour of light and temperature
done
clear
View Answer play_arrow
-
question_answer19) The unit of Stefan's constant is:
A)
\[W-{{m}^{2}}-{{K}^{4}}\]
done
clear
B)
\[W-{{m}^{2}}/{{K}^{4}}\]
done
clear
C)
\[W/{{m}^{2}}-K\]
done
clear
D)
\[W/{{m}^{2}}-{{K}^{4}}\]
done
clear
View Answer play_arrow
-
question_answer20) Consider two rods of same length and differed specific heats \[({{s}_{1}},\,\,{{s}_{2}})\], thermal conductivity \[({{K}_{1}},\,{{K}_{2}})\] and areas of cross section \[({{A}_{1}},{{A}_{2}})\] and both having temperatures \[({{T}_{1}},\,{{T}_{2}})\] at their ends. If their rate of loss of heat due to conduction is equal, then:
A)
\[{{\text{K}}_{\text{1}}}{{A}_{1}}={{K}_{2}}{{A}_{2}}\]
done
clear
B)
\[\frac{{{K}_{1}}\,{{A}_{1}}}{{{s}_{1}}},\frac{{{K}_{2}}{{A}_{2}}}{{{s}_{2}}}\]
done
clear
C)
\[{{K}_{2}}{{A}_{1}}={{K}_{1}}{{A}_{2}}\]
done
clear
D)
\[\frac{{{K}_{2}}{{A}_{1}}}{{{s}_{2}}}=\frac{{{K}_{1}}{{A}_{2}}}{{{s}_{1}}}\]
done
clear
View Answer play_arrow
-
question_answer21) The efficiency of Carnot engine is 50% and temperature of sink is 500 K. If the temperature of source is kept constant and its efficiency is to be raised to 60%, then the required temperature of the sink will be:
A)
600 K
done
clear
B)
500 K
done
clear
C)
400 K
done
clear
D)
100 K
done
clear
View Answer play_arrow
-
question_answer22) For a black body at temperature \[{{727}^{\text{o}}}C,\] its radiating power is 60 W and temperature of surrounding is \[{{227}^{\text{o}}}C\]. If the temperature of the black body is changed to \[{{1227}^{\text{o}}}C\], then its radiating power will be:
A)
123 W
done
clear
B)
240 W
done
clear
C)
304 W
done
clear
D)
320 W
done
clear
View Answer play_arrow
-
question_answer23) The number of atoms per unit cell in bcc lattice is:
A)
1
done
clear
B)
2
done
clear
C)
4
done
clear
D)
9
done
clear
View Answer play_arrow
-
question_answer24) A wave of amplitude A = 0.2 m, velocity v = 360 m/s and wavelength 60 m is travelling along positive x-axis, then the correct expression for the wave is:
A)
\[y=0.2\sin \,2\pi \,\left( 6\,t+\frac{x}{60} \right)\]
done
clear
B)
\[y=0.2\sin \,\pi \,\left( 6\,t+\frac{x}{60} \right)\]
done
clear
C)
\[y=0.2\sin \,2\pi \,\left( 6\,t-\frac{x}{60} \right)\]
done
clear
D)
\[y=0.2\sin \,\,\pi \,\left( 6\,t-\frac{x}{60} \right)\]
done
clear
View Answer play_arrow
-
question_answer25) A whistle revolves in a circle with angular velocity \[\omega =20\] rad/s using a string of length 50 cm. If the actual frequency of sound from the whistle is 385 Hz, then the minimum frequency heard by the observer far away from the centre is : (velocity of sound v = 340 m/s)
A)
385 Hz
done
clear
B)
374 Hz
done
clear
C)
394 Hz
done
clear
D)
333 Hz
done
clear
View Answer play_arrow
-
question_answer26) The velocity of electromagnetic wave is along the direction of:
A)
\[\vec{B}\times \vec{E}\]
done
clear
B)
\[\vec{E}\times \vec{B}\]
done
clear
C)
\[\vec{E}\]
done
clear
D)
\[\vec{B}\]
done
clear
View Answer play_arrow
-
question_answer27) Diameter of human eye lens is 2mm. What will be the minimum distance between two points to resolve them, which are situated at a distance of 50 m from eye? The wavelength of light is \[5000\overset{\text{o}}{\mathop{\text{A}}}\,\]:
A)
2.32 m
done
clear
B)
4.28 mm
done
clear
C)
1.25 cm
done
clear
D)
12.48 cm
done
clear
View Answer play_arrow
-
question_answer28) A body is located on a wall. Its image of equal size is to be obtained on a parallel wall with the help of a convex lens. The lens is placed at a distance d ahead of second wall, then the required focal length will be:
A)
only \[\frac{d}{4}\]
done
clear
B)
only \[\frac{d}{2}\]
done
clear
C)
more than \[\frac{d}{4}\] but less than \[\frac{d}{2}\]
done
clear
D)
less than \[\frac{d}{4}\]
done
clear
View Answer play_arrow
-
question_answer29)
For the given incident ray as shown in figure, the condition of total internal reflection of the ray will be satisfied if the refractive index of block will be: 
A)
\[\frac{\sqrt{3}+1}{2}\]
done
clear
B)
\[\frac{\sqrt{2}+1}{2}\]
done
clear
C)
\[\sqrt{\frac{3}{2}}\]
done
clear
D)
\[\sqrt{\frac{7}{6}}\]
done
clear
View Answer play_arrow
-
question_answer30) Which of the following has minimum wavelength?
A)
X-rays
done
clear
B)
Ultraviolet rays
done
clear
C)
\[\gamma \]-rays
done
clear
D)
Cosmic rays
done
clear
View Answer play_arrow
-
question_answer31) The following particles are moving with the same velocity, then maximum de-Broglie wavelength will be for:
A)
proton
done
clear
B)
\[\alpha \]-particle
done
clear
C)
neutron
done
clear
D)
\[\beta \]-particle
done
clear
View Answer play_arrow
-
question_answer32) Which of the following is not the property of cathode rays?
A)
It produces heating effect
done
clear
B)
It does not deflect in electric field
done
clear
C)
Its casts shadow
done
clear
D)
It produces fluorescence
done
clear
View Answer play_arrow
-
question_answer33) For a transistor \[\frac{{{I}_{C}}}{{{I}_{E}}}\] = 0.96, the current gain in common-emitter configuration is
A)
6
done
clear
B)
12
done
clear
C)
24
done
clear
D)
48
done
clear
View Answer play_arrow
-
question_answer34) For conduction in a p-n junction, the biasing is:
A)
high potential on n-side and low potential on p-side
done
clear
B)
high potential on p-side and low potential on n-side
done
clear
C)
same potential on both p and n-sides
done
clear
D)
undetermined
done
clear
View Answer play_arrow
-
question_answer35)
For a given circuit of ideal p-n junction diode, which of the following is correct? 
A)
In forward biasing the voltage across R is V
done
clear
B)
In reverse biasing the voltage across R Is 2V
done
clear
C)
In forward biasing the voltage across R is 2V
done
clear
D)
In reverse biasing the voltage across R is 2V
done
clear
View Answer play_arrow
-
question_answer36) The specific resistance of a conductor increases with:
A)
increase in temperature
done
clear
B)
increase in cross-sectional area
done
clear
C)
decrease in length
done
clear
D)
decrease in cross-sectional area
done
clear
View Answer play_arrow
-
question_answer37) Some charge is being given to a conductor then its potential is:
A)
maximum at surface
done
clear
B)
maximum at centre
done
clear
C)
same throughout the conductor
done
clear
D)
maximum somewhere between surface and centre
done
clear
View Answer play_arrow
-
question_answer38) To convert a galvanometer into a voltmeter, one should connect a:
A)
high resistance in series with galvanometer
done
clear
B)
low resistance in series with galvanometer
done
clear
C)
high resistance in parallel with galvanometer
done
clear
D)
low resistance in parallel with galvanometer
done
clear
View Answer play_arrow
-
question_answer39) A capacitor of capacity \[{{C}_{1}}\] is charged upto potential V volt and then connected in parallel to an uncharged capacitor of capacity \[{{C}_{2}}\]. The final potential difference across each capacitor will be:
A)
\[\frac{{{C}_{2}}V}{{{C}_{1}}+{{C}_{2}}}\]
done
clear
B)
\[\frac{{{C}_{1}}V}{{{C}_{1}}+{{C}_{2}}}\]
done
clear
C)
\[\left( 1+\frac{{{C}_{2}}}{{{C}_{1}}} \right)V\]
done
clear
D)
\[\left( 1-\frac{{{C}_{2}}}{{{C}_{1}}} \right)V\]
done
clear
View Answer play_arrow
-
question_answer40) For a cell the terminal potential difference is 2.2 V when circuit is open and reduces to 1.8 V when cell is connected to a resistance R = 5 \[\Omega \], the internal resistance (r) of cell is:
A)
\[\frac{10}{9}\Omega \]
done
clear
B)
\[\frac{9}{10}\,\Omega \]
done
clear
C)
\[\frac{11}{9}\Omega \]
done
clear
D)
\[\frac{5}{9}\Omega \]
done
clear
View Answer play_arrow
-
question_answer41) Identical charges \[(-q)\] are placed at each corners of a cube of side b, then the electrostatic potential energy of charge \[(+q)\] placed at the centre of the cube will be:
A)
\[-\frac{4\sqrt{2}{{q}^{2}}}{\pi {{\varepsilon }_{0}}}\]
done
clear
B)
\[\frac{8\sqrt{2}{{q}^{2}}}{\pi {{\varepsilon }_{0}}b}\]
done
clear
C)
\[-\frac{4{{q}^{2}}}{\sqrt{3}\pi {{\varepsilon }_{0}}b}\]
done
clear
D)
\[\frac{8\sqrt{2}{{q}^{2}}}{4\pi {{\varepsilon }_{0}}b}\]
done
clear
View Answer play_arrow
-
question_answer42) The magnetic field of a given length of wire carrying a current for a single turn circular coil at centre is B, then its value for two turns for the same wire when same current passing through it is:
A)
\[\frac{B}{4}\]
done
clear
B)
\[\frac{B}{2}\]
done
clear
C)
2 B
done
clear
D)
4 B
done
clear
View Answer play_arrow
-
question_answer43) A charge q moves in a region where electric field \[\vec{E}\] and magnetic field \[\vec{B}\] both exist, then the force on it is:
A)
\[q\,\vec{v}\,\times \,\vec{B}\]
done
clear
B)
\[q\,\vec{E}+q\,\vec{v}\,\times \,\vec{B}\]
done
clear
C)
\[q\,\vec{B}+q\,\vec{B}\,\times \,\vec{v}\]
done
clear
D)
\[q\,\vec{B}+q\,(\vec{E}\times \vec{v})\]
done
clear
View Answer play_arrow
-
question_answer44) Two bar magnets having same geometry with magnetic moments M and 2M, are firstly placed in such a way that their similar poles are on the same side; then its period of oscillation is \[{{T}_{1}}\]. Now the polarity of one of the magnets is reversed, then time period of oscillations will be:
A)
\[{{T}_{1}}<{{T}_{2}}\]
done
clear
B)
\[{{T}_{1}}>{{T}_{2}}\]
done
clear
C)
\[{{T}_{1}}={{T}_{2}}\]
done
clear
D)
\[{{T}_{2}}=\] \[\infty \]
done
clear
View Answer play_arrow
-
question_answer45) For a series LCR circuit, the power loss at resonance is:
A)
\[\frac{{{V}^{2}}}{\omega L-\frac{1}{\omega C}}\]
done
clear
B)
\[{{I}^{2}}\,C\,\omega \]
done
clear
C)
\[{{I}^{2}}R\]
done
clear
D)
\[\frac{{{V}^{2}}}{\omega C}\]
done
clear
View Answer play_arrow
-
question_answer46) A sample of radioactive elements contains \[4\times {{10}^{10}}\] active nuclei. If half life of element is 10 days, then the number of decayed nuclei after 30 days is:
A)
\[0.5\times {{10}^{10}}\]
done
clear
B)
\[2\times {{10}^{10}}\]
done
clear
C)
\[3.5\times {{10}^{10}}\]
done
clear
D)
\[1\times {{10}^{10}}\]
done
clear
View Answer play_arrow
-
question_answer47) Which of the following are suitable for the fusion process?
A)
Light nuclei
done
clear
B)
Heavy nuclei
done
clear
C)
Elements lying in the middle of periodic table
done
clear
D)
Elements lying in the middle of binding energy curve
done
clear
View Answer play_arrow
-
question_answer48) When a deuterium is bombarded on \[_{8}{{O}^{16}}\] nucleus, an \[\alpha \]-particle is emitted then the product nucleus is:
A)
\[_{7}{{N}^{13}}\]
done
clear
B)
\[_{5}{{B}^{10}}\]
done
clear
C)
\[_{4}B{{e}^{9}}\]
done
clear
D)
\[_{7}{{N}^{14}}\]
done
clear
View Answer play_arrow
-
question_answer49) When ultraviolet rays are incident on metal plate, the photoelectric effect does not occur. It occurs by incidence of:
A)
infrared rays
done
clear
B)
X-rays
done
clear
C)
radio waves
done
clear
D)
light waves
done
clear
View Answer play_arrow
-
question_answer50)
The truth table for a logic gate is: | Input | Output |
| A | B | Y |
| 1 | 1 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 0 | 0 | 1 |
The logic gate is:
A)
NAND gate
done
clear
B)
XOR gate
done
clear
C)
NOR gate
done
clear
D)
OR gate
done
clear
View Answer play_arrow
-
question_answer51) \[_{92}{{U}^{235}}\] nucleus absorb a neutron and disintegrate in \[_{54}X{{e}^{139}},\,{{\,}_{38}}S{{r}^{94}}\] and X so, what will be product X:
A)
3-neutrons
done
clear
B)
2-neutrons
done
clear
C)
-particle
done
clear
D)
-particle
done
clear
View Answer play_arrow
-
question_answer52) In hydrogen atom, energy of first excited state is -3.4 eV. Then KE of same orbit of hydrogen atom:
A)
+ 3.4 eV
done
clear
B)
+ 6.8 eV
done
clear
C)
- 13.6 eV
done
clear
D)
+ 13.6 Ev
done
clear
View Answer play_arrow
-
question_answer53) Reaction \[Ba{{O}_{2}}(s)\,\rightleftharpoons \,BaO(s)\,+{{O}_{2}}(g);\] \[\Delta H=\,+ve\]. In equilibrium condition, Pressure of \[{{O}_{2}}\] depends on:
A)
increased mass of \[Ba{{O}_{2}}\]
done
clear
B)
increased mass of \[BaO\]
done
clear
C)
increased temperature of equilibrium.
done
clear
D)
increased mass of \[Ba{{O}_{2}}\] and BaO both
done
clear
View Answer play_arrow
-
question_answer54) Solubility of \[M{{X}_{2}}\]-type electrolytes is \[0.5\times {{10}^{-4}}mol/L\] Then find out if \[{{K}_{sp}}\] of electrolytes:
A)
\[5\times {{10}^{-12}}\]
done
clear
B)
\[25\times {{10}^{-10}}\]
done
clear
C)
\[1\times {{10}^{-13}}\]
done
clear
D)
\[5\times {{10}^{-13}}\]
done
clear
View Answer play_arrow
-
question_answer55) . 1 M and 2.5 litre NaOH solution mixed with another 0.5 M and 3 L NaOH solution. Then find out molarity of resultant solution.
A)
0.80 M
done
clear
B)
1.0 M
done
clear
C)
0.73 M
done
clear
D)
0.50 M
done
clear
View Answer play_arrow
-
question_answer56) Which has highest pH?
A)
\[C{{H}_{3}}COOK\]
done
clear
B)
\[N{{a}_{2}}C{{O}_{3}}\]
done
clear
C)
\[N{{H}_{4}}Cl\]
done
clear
D)
\[NaN{{O}_{3}}\]
done
clear
View Answer play_arrow
-
question_answer57) Solution of 0.1 N \[N{{H}_{4}}OH\] and 0.1 N \[N{{H}_{4}}Cl\] has pH 9.25, then find out \[p{{K}_{b}}\] of \[N{{H}_{4}}OH\].
A)
9.25
done
clear
B)
4.75
done
clear
C)
3.75
done
clear
D)
8.25
done
clear
View Answer play_arrow
-
question_answer58) van der Waal's real gas, act as an ideal gas, at which condition?
A)
High temperature, low pressure
done
clear
B)
Low temperature, high pressure
done
clear
C)
High temperature, height pressure
done
clear
D)
Low temperature, low pressure
done
clear
View Answer play_arrow
-
question_answer59) Unit of entropy is:
A)
\[J{{K}^{-1}}\,mo{{l}^{-1}}\]
done
clear
B)
\[J\,mo{{l}^{-1}}\]
done
clear
C)
\[{{J}^{-1}}{{K}^{-1}}\,mo{{l}^{-1}}\]
done
clear
D)
\[JK\,mo{{l}^{-1}}\]
done
clear
View Answer play_arrow
-
question_answer60) In a closed insulated container a liquid is stirred with a paddle to increase the temperature, which of the following is true?
A)
\[\Delta E=\Delta W\ne 0,\,q=0\]
done
clear
B)
\[\Delta E=W=0,\,q\ne 0\]
done
clear
C)
\[\Delta E=0,\,W=q\ne 0\]
done
clear
D)
\[W=0,\,\Delta W=q\ne 0\]
done
clear
View Answer play_arrow
-
question_answer61) 2 mole of ideal gas at \[{{27}^{\text{o}}}C\] temperature is expanded reversibly from 2 L to 20 L. Find entropy change (R = 2 cal/mol K):
A)
92.1
done
clear
B)
0
done
clear
C)
4
done
clear
D)
9.2
done
clear
View Answer play_arrow
-
question_answer62) Heat of combustion \[\Delta {{H}^{o}}\] for C(s), \[{{H}_{2}}(g)\] and \[C{{H}_{4}}(g)\] are -94, -68 and -213 kcal/mol. Then \[\Delta {{H}^{o}}\] for \[C(s)+2{{H}_{2}}(g)\] \[\to \] \[C{{H}_{4}}(g)\] is:
A)
-17 kcal
done
clear
B)
-111 kcal
done
clear
C)
-170 kcal
done
clear
D)
-85 kcal
done
clear
View Answer play_arrow
-
question_answer63) 3A\[\xrightarrow{{}}\]2B, rate of reaction \[+\frac{d[B]}{dt}\]is equal to:
A)
\[-\frac{3}{2}\frac{d[A]}{dt}\]
done
clear
B)
\[-\frac{2}{3}\frac{d[A]}{dt}\]
done
clear
C)
\[-\frac{1}{3}\frac{d[A]}{dt}\]
done
clear
D)
\[+2\frac{d\,[A]}{dt}\]
done
clear
View Answer play_arrow
-
question_answer64) \[3A\xrightarrow[{}]{{}}B+C\] It would be a zero order reaction when:
A)
the rate of reaction is proportional to square of concentration of A
done
clear
B)
the rate of reaction remains same at any concentration of A
done
clear
C)
the rate remains unchanged at any concentration of B and C
done
clear
D)
the rate of reaction doubles if concentration of B is increased to double
done
clear
View Answer play_arrow
-
question_answer65) Which has maximum molecules?
A)
\[7\,g\,{{N}_{2}}\]
done
clear
B)
\[2\,g\,{{H}_{2}}\]
done
clear
C)
\[16\,g\,N{{O}_{2}}\]
done
clear
D)
\[16\,g\,{{O}_{2}}\]
done
clear
View Answer play_arrow
-
question_answer66) A solution contains non-volatile solute of molecular mass \[{{M}_{2}}\]. Which of the following can be used to calculate the molecular mass of solute in terms of osmotic pressure:
A)
\[{{M}_{2}}=\left[ \frac{{{m}_{2}}}{\pi } \right]\,VRT\]
done
clear
B)
\[{{M}_{2}}=\left[ \frac{{{m}_{2}}}{V} \right]\frac{RT}{\pi }\]
done
clear
C)
\[{{M}_{2}}=\left[ \frac{{{m}_{2}}}{V} \right]\pi RT\]
done
clear
D)
\[{{M}_{2}}=\left[ \frac{{{m}_{2}}}{V} \right]\frac{\pi }{RT}\]
done
clear
View Answer play_arrow
-
question_answer67) A solution containing components A and B follows Raoult's law:
A)
A - B attraction force is greater than A - A and B ? B
done
clear
B)
A - B attraction force is less than A-A and B ? B
done
clear
C)
A - B attraction force remains same as A-A and B ? B
done
clear
D)
volume of solution is different from sum of volumes of solute and solvent
done
clear
View Answer play_arrow
-
question_answer68) Which reaction is not feasible?
A)
\[2KI+B{{r}_{2}}\to 3KBr+{{I}_{2}}\]
done
clear
B)
\[2KBr+{{I}_{2\,}}\to \,2KI+B{{r}_{2}}\]
done
clear
C)
\[2KBr+C{{l}_{2}}\to 2KCl+B{{r}_{2}}\]
done
clear
D)
\[2{{H}_{2}}O+2{{F}_{2}}\to 4HF+{{O}_{2}}\]
done
clear
View Answer play_arrow
-
question_answer69) In electrolysis of NaCl when Pt electrode is taken then \[{{H}_{2}}\] is liberated at cathode while with Hg cathode it forms sodium amalgam:
A)
Hg is more inert than Pt
done
clear
B)
more voltage is required to reduce \[{{H}^{+}}\] at Hg than at Pt
done
clear
C)
Na is dissolved in Hg while it does not dissolved in Pt
done
clear
D)
concentration of \[{{H}^{+}}\] ions is larger when Pt electrode is taken
done
clear
View Answer play_arrow
-
question_answer70) Which of the following statement is true?
A)
Silicon exhibits 4 coordination number in its compounds
done
clear
B)
Bond energy of \[{{F}_{2}}\] is less than \[C{{l}_{2}}\]
done
clear
C)
Mn(III) oxidation state is more stable than Mn(Il) in aqueous state
done
clear
D)
Elements of 15th group shows only + 3 and +5 oxidation states
done
clear
View Answer play_arrow
-
question_answer71) Which of the following order is wrong?
A)
\[N{{H}_{3}}<P{{H}_{3}}<As{{H}_{3}}\] ? acidic
done
clear
B)
Li < Be < B < C - 1st IP
done
clear
C)
\[A{{l}_{2}}{{O}_{3}}<MgO<N{{a}_{2}}O<{{K}_{2}}O\] ? basic
done
clear
D)
\[L{{i}^{+}}\,<N{{a}^{+}}<{{K}^{+}}<C{{s}^{+}}\]- ionic radius
done
clear
View Answer play_arrow
-
question_answer72) General electronic configuration of lanthanides are:
A)
\[(n-2){{f}^{1-14}}(n-1){{s}^{2}}{{p}^{6}}{{d}^{0-1}}n{{s}^{2}}\]
done
clear
B)
\[(n-2){{f}^{10-14}}(n-1){{d}^{0-1}}n{{s}^{2}}\]
done
clear
C)
\[(n-2){{f}^{0-14}}(n-1){{d}^{10}}n{{s}^{2}}\]
done
clear
D)
\[(n-2){{d}^{0-1}}(n-1){{f}^{1-14}}n{{s}^{2}}\]
done
clear
View Answer play_arrow
-
question_answer73) An atom has electronic configuration \[1{{s}^{2}}2{{s}^{2}}\,2{{p}^{6}}3{{s}^{2}}\,3{{p}^{6}}\,3{{d}^{3}}\,4{{s}^{2}},\] you will place it in:
A)
fifth group
done
clear
B)
fifteenth group
done
clear
C)
second group
done
clear
D)
third group
done
clear
View Answer play_arrow
-
question_answer74) Which of the following is iso-electronic?
A)
\[C{{O}_{2}},\,N{{O}_{2}}\]
done
clear
B)
\[NO_{2}^{-},\,C{{O}_{2}}\]
done
clear
C)
\[C{{N}^{-}},\,CO\]
done
clear
D)
\[S{{O}_{2}},\,C{{O}_{2}}\]
done
clear
View Answer play_arrow
-
question_answer75) Which of the following has \[{{p}_{\pi }}-{{d}_{\pi }}\] bonding?
A)
\[NO_{3}^{-}\]
done
clear
B)
\[SO_{3}^{2-}\]
done
clear
C)
\[BO_{3}^{3-}\]
done
clear
D)
\[CO_{3}^{2-}\]
done
clear
View Answer play_arrow
-
question_answer76) In \[NO_{3}^{-}\] ion number of bond pair and lone pair of electron on nitrogen atom are:
A)
2, 2
done
clear
B)
3, 1
done
clear
C)
1, 3
done
clear
D)
4, 0
done
clear
View Answer play_arrow
-
question_answer77) Which of the following shows maximum number of oxidation states?
A)
Cr
done
clear
B)
Fe
done
clear
C)
Mn
done
clear
D)
V
done
clear
View Answer play_arrow
-
question_answer78) Atomic number of Cr and Fe are respectively 24 and 26, which of the following is paramagnetic with the spin of electron:
A)
\[[Cr{{(CO)}_{6}}]\]
done
clear
B)
\[[Fe{{(CO)}_{5}}]\]
done
clear
C)
\[{{[Fe{{(CN)}_{6}}]}^{4-}}\]
done
clear
D)
\[{{[Cr{{(N{{H}_{3}})}_{6}}]}^{3+}}\]
done
clear
View Answer play_arrow
-
question_answer79) The hypothetical complex chloro diaquatriammine cobalt (III) chloride can be represented as:
A)
\[[CoCl{{(N{{H}_{3}})}_{3}}{{({{H}_{2}}O)}_{2}}]C{{l}_{2}}\]
done
clear
B)
\[[Co{{(N{{H}_{3}})}_{3}}({{H}_{2}}O)C{{l}_{3}}]\]
done
clear
C)
\[[Co{{(N{{H}_{2}})}_{3}}{{({{H}_{2}}O)}_{2}}Cl]\]
done
clear
D)
\[[Co{{(N{{H}_{3}})}_{3}}{{({{H}_{2}}O)}_{3}}]C{{l}_{3}}\]
done
clear
View Answer play_arrow
-
question_answer80) In the silver plating of copper, \[K[Ag{{(CN)}_{2}}]\] is used instead of \[AgN{{O}_{3}}\]. The reason is:
A)
a thin layer of Ag is formed on Cu
done
clear
B)
more voltage is required
done
clear
C)
\[A{{g}^{+}}\] ions are completely removed from solution
done
clear
D)
less availability of \[A{{g}^{+}}\] ions, as Cu cannot displace Ag from \[{{[Ag{{(CN)}_{2}}]}^{-}}\] ion
done
clear
View Answer play_arrow
-
question_answer81) \[CuS{{O}_{4}}\] when reacts with KCN forms CuCN. Which is insoluble in water. It is soluble in excess of KCN, due to formation of the following complex:
A)
\[{{K}_{2}}[Cu{{(CN)}_{4}}]\]
done
clear
B)
\[[{{K}_{3}}{{(CuCN)}_{4}}]\]
done
clear
C)
\[CuC{{N}_{2}}\]
done
clear
D)
\[Cu[K\,Cu{{(CN)}_{4}}]\]
done
clear
View Answer play_arrow
-
question_answer82) Position of non-polar and polar parts in Micelles:
A)
polar at outer surface but non-polar at inner surface
done
clear
B)
polar at inner surface non-polar at outer surface
done
clear
C)
distributed over all the surface
done
clear
D)
are present in the surface only
done
clear
View Answer play_arrow
-
question_answer83) In borax bead test which compound is formed?
A)
ortho borate
done
clear
B)
meta borate
done
clear
C)
double oxide
done
clear
D)
terra borate
done
clear
View Answer play_arrow
-
question_answer84) Zn gives \[{{H}_{2}}\] gas with \[{{H}_{2}}S{{O}_{4}}\] and HCI but not with \[HN{{O}_{3}}\]
A)
Zn act as oxidising agent when react with \[HN{{O}_{3}}\]
done
clear
B)
\[HN{{O}_{3}}\] is weaker acid then \[{{H}_{2}}S{{O}_{4}}\] and HCI
done
clear
C)
In electrochemical series Zn is above hydrogen
done
clear
D)
\[NO_{3}^{-}\] is reduced in preference to hydronium ion
done
clear
View Answer play_arrow
-
question_answer85) IUPAC name of die following is: \[C{{H}_{2}}=CH-C{{H}_{2}}-C{{H}_{2}}-C\equiv CH\]
A)
1, 5-hexenyne
done
clear
B)
1 - hexene-5-yne
done
clear
C)
1-hexyne-5-ene
done
clear
D)
1, 5?hexynene
done
clear
View Answer play_arrow
-
question_answer86)
Product ?P? in the above reaction is:
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
-
question_answer87) n-propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent:
A)
\[PC{{l}_{5}}\]
done
clear
B)
reduction
done
clear
C)
oxidation with potassium dichromate
done
clear
D)
ozonolysis
done
clear
View Answer play_arrow
-
question_answer88) In the following reaction product 'P? is: \[R-\underset{\begin{smallmatrix} |\,\,| \\ O \end{smallmatrix}}{\mathop{C}}\,-Cl\xrightarrow[Pd-BaS{{O}_{4}}]{{{H}_{2}}}P\]
A)
\[RC{{H}_{2}}OH\]
done
clear
B)
RCOOH
done
clear
C)
RCHO
done
clear
D)
\[RC{{H}_{3}}\]
done
clear
View Answer play_arrow
-
question_answer89) \[\overset{\begin{smallmatrix} \odot - \\ \centerdot \,\,\centerdot \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,-\underset{\begin{smallmatrix} |\,\,\,| \\ O \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}}\] and \[C{{H}_{2}}=\underset{\begin{align} & | \\ & _{\centerdot }^{\centerdot }O\,_{\centerdot }^{\centerdot } \\ & \centerdot \,\,\centerdot \\ & \odot - \\ \end{align}}{\mathop{C}}\,-C{{H}_{3}}\] are:
A)
resonating structures
done
clear
B)
tautomers
done
clear
C)
geometrical isomers
done
clear
D)
optical isomers
done
clear
View Answer play_arrow
-
question_answer90) Reactivity order of halides for dehydrohalogenation is:
A)
\[R-F>R-Cl>R-Br>R-I\]
done
clear
B)
\[R-I>R-Br>R-Cl>R-F\]
done
clear
C)
\[R-I>R-Cl>R-Br>R-F\]
done
clear
D)
\[R-F>R-I>R-Br>R-Cl\]
done
clear
View Answer play_arrow
-
question_answer91) Monomer of \[\left[ \begin{align} & \,\,\,\,C{{H}_{3}} \\ & -\underset{|}{\mathop{\overset{|}{\mathop{C}}\,}}\,-C{{H}_{2}}- \\ & \,\,\,\,C{{H}_{3}} \\ \end{align} \right]\] is:
A)
2-methyl propene
done
clear
B)
styrene
done
clear
C)
propylene
done
clear
D)
ethane
done
clear
View Answer play_arrow
-
question_answer92)
in above reaction product ?P? is :
A)
done
clear
B)
done
clear
C)
done
clear
D)
\[{{C}_{6}}{{H}_{5}}-\overset{\begin{smallmatrix} O \\ |\,\,| \end{smallmatrix}}{\mathop{C}}\,-{{C}_{6}}{{H}_{5}}\]
done
clear
View Answer play_arrow
-
question_answer93) Cellulose is polymer of:
A)
glucose
done
clear
B)
fructose
done
clear
C)
ribose
done
clear
D)
sucrose
done
clear
View Answer play_arrow
-
question_answer94) \[\begin{align} & C{{H}_{3}}C{{H}_{2}}Cl\xrightarrow{NaCN}X\xrightarrow[{}]{Ni/{{H}_{2}}}Y- \\ & | \\ & Z\xleftarrow{\text{Acetic anhydride}}| \\ \end{align}\]
A)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}NHCOC{{H}_{3}}\]
done
clear
B)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}N{{H}_{2}}\]
done
clear
C)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CONHC{{H}_{3}}\]
done
clear
D)
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CONHCOC{{H}_{3}}\]
done
clear
View Answer play_arrow
-
question_answer95) When phenol is treated with \[CHC{{l}_{3}}\] and NaOH the product formed is:
A)
benzaldehyde
done
clear
B)
salicylaldehyde
done
clear
C)
salicylic acid
done
clear
D)
benzoic acid
done
clear
View Answer play_arrow
-
question_answer96) The percentage of C, H and N in an organic compound are 40%, 13.3% and 46.7% respectively then empirical formula is:
A)
\[{{C}_{3}}{{H}_{13}}{{N}_{3}}\]
done
clear
B)
\[C{{H}_{2}}N\]
done
clear
C)
\[C{{H}_{4}}N\]
done
clear
D)
\[C{{H}_{6}}N\]
done
clear
View Answer play_arrow
-
question_answer97) Enzymes are made up of:
A)
edible proteins
done
clear
B)
proteins with specific structure
done
clear
C)
nitrogen containing carbohydrates
done
clear
D)
carbohydrates
done
clear
View Answer play_arrow
-
question_answer98) Geometrical isomers are differ in:
A)
position of functional group
done
clear
B)
position of atoms
done
clear
C)
spatial arrangement of atoms
done
clear
D)
length of carbon chain
done
clear
View Answer play_arrow
-
question_answer99) When \[C{{H}_{3}}C{{H}_{2}}CHC{{l}_{2}}\] is treated with \[NaN{{H}_{2}}\] the product formed is:
A)
\[C{{H}_{3}}-CH=C{{H}_{2}}\]
done
clear
B)
\[C{{H}_{3}}-C\equiv CH\]
done
clear
C)
\[C{{H}_{3}}C{{H}_{2}}CH\backslash /N{{H}_{2}}N{{H}_{2}}\]
done
clear
D)
\[C{{H}_{3}}C{{H}_{2}}CH\backslash /ClN{{H}_{2}}\]
done
clear
View Answer play_arrow
-
question_answer100) Which is not true statement?
A)
\[\alpha \]-carbon of \[\alpha \]-amino acid is asymmetric
done
clear
B)
All proteins are found in L-form
done
clear
C)
Human body can synthesize all proteins they need
done
clear
D)
At pH = 7 both amino and carboxylic groups exist in ionised form
done
clear
View Answer play_arrow
-
question_answer101) Which of the following is important for speciation?
A)
Seasonal isolation
done
clear
B)
Reproductive isolation
done
clear
C)
Behavioural isolation
done
clear
D)
Temporal isolation
done
clear
View Answer play_arrow
-
question_answer102) In a population, unrestricted reproductive capacity is called:
A)
biotic potential
done
clear
B)
fertility
done
clear
C)
carrying capacity
done
clear
D)
birth rate
done
clear
View Answer play_arrow
-
question_answer103) Some bacteria are able to grow in streptomycin containing medium due to:
A)
natural selection
done
clear
B)
induced mutation
done
clear
C)
reproductive isolation
done
clear
D)
genetic drift
done
clear
View Answer play_arrow
-
question_answer104) Which of the following are homologous organs?
A)
Wings of birds and locust
done
clear
B)
Wings of birds (sparrow) and pectoral fins of Fish
done
clear
C)
Wings of bat and butterfly
done
clear
D)
Legs of frog and cockroach
done
clear
View Answer play_arrow
-
question_answer105) Which is a reducing sugar?
A)
Galactose
done
clear
B)
Gluconic acid
done
clear
C)
\[\beta \]-methyl galactoside
done
clear
D)
Sucrose
done
clear
View Answer play_arrow
-
question_answer106) Reason of fast speciation in present day crop plants is:
A)
mutation
done
clear
B)
isolation
done
clear
C)
polyploidy
done
clear
D)
sexual reproduction
done
clear
View Answer play_arrow
-
question_answer107) Cause of mimicry is:
A)
attack (offence)
done
clear
B)
protection (defence)
done
clear
C)
both (a) and (b)
done
clear
D)
isolation
done
clear
View Answer play_arrow
-
question_answer108) Change in the sequence of nucleotide in DNA is called as:
A)
mutagen
done
clear
B)
mutation
done
clear
C)
recombination
done
clear
D)
translation
done
clear
View Answer play_arrow
-
question_answer109) Which of the following is a correct match?
A)
Down syndrome - 21st chromosome
done
clear
B)
Sickel cell anaemia -X-chromosome
done
clear
C)
Haemophilia -Y-chromosome
done
clear
D)
Parkinson disease -X and Y-chromosome
done
clear
View Answer play_arrow
-
question_answer110) The semilog of per minute growing bacteria is ploted against time. What will be the shape of graph?
A)
Sigmoid
done
clear
B)
Hyperbola
done
clear
C)
Ascending straight line
done
clear
D)
Descending straight line.
done
clear
View Answer play_arrow
-
question_answer111) Hydrolytic enzymes, which act at low pH are called as:
A)
proteases
done
clear
B)
\[\alpha\]-amylases
done
clear
C)
hydrolases
done
clear
D)
peroxidases
done
clear
View Answer play_arrow
-
question_answer112) Acromegaly is caused by:
A)
excess of STH
done
clear
B)
excess of thyroxin
done
clear
C)
deficiency of thyroxin
done
clear
D)
excess of adrenaline
done
clear
View Answer play_arrow
-
question_answer113) Genetic drift operates in:
A)
small isolated population
done
clear
B)
large isolated population
done
clear
C)
fast reproductive population
done
clear
D)
slow reproductive population
done
clear
View Answer play_arrow
-
question_answer114) Mainly which type of hormones control the menstrual cycle in human beings?
A)
FSH
done
clear
B)
LH
done
clear
C)
FSH, LH, estrogen
done
clear
D)
Progesterone
done
clear
View Answer play_arrow
-
question_answer115) There is no life on moon due to the absence of:
A)
\[{{O}_{2}}\]
done
clear
B)
water
done
clear
C)
light
done
clear
D)
temperature
done
clear
View Answer play_arrow
-
question_answer116) When both ovaries are removed from rat which hormone is decreased in blood?
A)
Oxytocin
done
clear
B)
Prolactin
done
clear
C)
Estrogen
done
clear
D)
Gonadotrophic releasing factor
done
clear
View Answer play_arrow
-
question_answer117) Which cartilage is present on the end of long bones?
A)
Calcified cartilage
done
clear
B)
Hyaline cartilage
done
clear
C)
Elastic cartilage
done
clear
D)
Fibrous cartilage
done
clear
View Answer play_arrow
-
question_answer118) In fluid mosaic model of plasma membrane:
A)
upper layer is non-polar and hydrophihc
done
clear
B)
polar layer is hydrophobic
done
clear
C)
phospholipids form- a bimolecular layer middle part
done
clear
D)
proteins form a middle layer
done
clear
View Answer play_arrow
-
question_answer119) According to fossils discovered upto present time, origin and evolution of man was started from which country?
A)
France
done
clear
B)
Java
done
clear
C)
Africa
done
clear
D)
China
done
clear
View Answer play_arrow
-
question_answer120) Melanin protects from:
A)
UV rays
done
clear
B)
visible rays
done
clear
C)
infra-red rays
done
clear
D)
X-rays
done
clear
View Answer play_arrow
-
question_answer121) Choose the correct sequence of stages of growth curve for bacteria:
A)
lag, log, stationary, decline phase
done
clear
B)
lag, log, stationary phase
done
clear
C)
stationary, lag, log, decline phase
done
clear
D)
decline, lag, log phase
done
clear
View Answer play_arrow
-
question_answer122) Which of the following statements is true for lymph?
A)
WBC and serum
done
clear
B)
All components of blood except RBCs and some proetins
done
clear
C)
RBCs, WBCs and plasma
done
clear
D)
RBCs, proteins and platelets
done
clear
View Answer play_arrow
-
question_answer123) Impulse of heart beat originates from:
A)
SA node
done
clear
B)
AV node
done
clear
C)
vagus nerve
done
clear
D)
cardiac nerve
done
clear
View Answer play_arrow
-
question_answer124) What will happen if ligaments are cut or broken?
A)
Bones will move freely at joints
done
clear
B)
No movement at joint
done
clear
C)
Bone will become unfixed
done
clear
D)
Bone will become fixed
done
clear
View Answer play_arrow
-
question_answer125) Continuous bleeding from an injured part of body is due to deficiency of:
A)
vitamin-A
done
clear
B)
vitamin-B
done
clear
C)
vitamin-K
done
clear
D)
vitamin-E
done
clear
View Answer play_arrow
-
question_answer126) Which of the following statement is correct about node of ranvier?
A)
Axolemma is discontinuous
done
clear
B)
Myelin sheath is discontinuous
done
clear
C)
Both neurilemma and myelin sheath are discontinuous
done
clear
D)
Covered by myelin sheath
done
clear
View Answer play_arrow
-
question_answer127) Stool of a person contains whitish grey colour due to malfunction of which type of organ?
A)
Pancreas
done
clear
B)
Spleen
done
clear
C)
Kidney
done
clear
D)
liver
done
clear
View Answer play_arrow
-
question_answer128) Adrenaline directly affects on:
A)
SA node
done
clear
B)
\[\beta \]-cells of Langerhans
done
clear
C)
dorsal root of spinal cord
done
clear
D)
epithelial cells of stomach
done
clear
View Answer play_arrow
-
question_answer129) Which of the following is used in the treatment of thyroid cancer?
A)
\[{{I}_{131}}\]
done
clear
B)
\[{{U}_{238}}\]
done
clear
C)
\[R{{a}_{224}}\]
done
clear
D)
\[{{C}_{14}}\]
done
clear
View Answer play_arrow
-
question_answer130) Number of wild life is continuously decreasing. What is the main reason of this?
A)
Predation
done
clear
B)
Cutting down of forests
done
clear
C)
Destruction of habitats
done
clear
D)
Hunting
done
clear
View Answer play_arrow
-
question_answer131) In which era reptiles dominated?
A)
Coenozoic era
done
clear
B)
Mesozoic era
done
clear
C)
Paleozoic era
done
clear
D)
Archaeozoic era
done
clear
View Answer play_arrow
-
question_answer132) What is true for individuals of same species?
A)
Live in same niche
done
clear
B)
Live in same habitat
done
clear
C)
Interbreeding
done
clear
D)
Live in different habitats
done
clear
View Answer play_arrow
-
question_answer133) Which of the following is absent in polluted water?
A)
Hydrilla
done
clear
B)
Water hyacinth
done
clear
C)
Larva of stone fly
done
clear
D)
Blue-green algae
done
clear
View Answer play_arrow
-
question_answer134) In Protozoa like Amoeba and Paramecium, an organelle is found for osmoregulation which is:
A)
contractile vacuole
done
clear
B)
mitochondria
done
clear
C)
nucleus
done
clear
D)
food vacuole
done
clear
View Answer play_arrow
-
question_answer135) During its formation bread, becomes porous due to release of \[C{{O}_{2}}\] by the action of:
A)
yeast
done
clear
B)
bacteria
done
clear
C)
virus
done
clear
D)
protozoans
done
clear
View Answer play_arrow
-
question_answer136) Which bacteria are utilized in gober gas plant?
A)
Methanogens
done
clear
B)
Nitrifying bacteria
done
clear
C)
Ammonifying bacteria
done
clear
D)
Denitrifying bacteria
done
clear
View Answer play_arrow
-
question_answer137) Which of the following is without exception in angiosperms?
A)
Presence of vessels
done
clear
B)
Double fertilization
done
clear
C)
Secondary growth
done
clear
D)
Autotrophic nutrition
done
clear
View Answer play_arrow
-
question_answer138) In the five kingdom system, the main basis of classification is:
A)
structure of nucleus
done
clear
B)
nutrition
done
clear
C)
structure of cell wall
done
clear
D)
asexual reproduction
done
clear
View Answer play_arrow
-
question_answer139) Cancerous cells can easily be destroyed by radiation due to:
A)
rapid cell division
done
clear
B)
lack of nutrition
done
clear
C)
fast mutation
done
clear
D)
lack of oxygen
done
clear
View Answer play_arrow
-
question_answer140) Which fungal disease spreads by seed and flowers?
A)
Loose smut of wheat
done
clear
B)
Corn smut
done
clear
C)
Covered smut of barley
done
clear
D)
Soft rot of potato
done
clear
View Answer play_arrow
-
question_answer141) Sequence of which of the following is used to know the phylogeny?
A)
m-RNA
done
clear
B)
r-RNA
done
clear
C)
t-RNA
done
clear
D)
DNA
done
clear
View Answer play_arrow
-
question_answer142) Which of the following does not secrete toxins during storage conditions of crop plants?
A)
Aspergillus
done
clear
B)
Penicillium
done
clear
C)
Fusarium
done
clear
D)
Colletotrichum
done
clear
View Answer play_arrow
-
question_answer143) Which of the following plants produces seeds but not flowers?
A)
Maize
done
clear
B)
Mint
done
clear
C)
Peepal
done
clear
D)
Pinus
done
clear
View Answer play_arrow
-
question_answer144) Best material for the study of mitosis in laboratory is:
A)
anther
done
clear
B)
root tip
done
clear
C)
leaf tip
done
clear
D)
ovary
done
clear
View Answer play_arrow
-
question_answer145) Mitotic spindle is mainly composed of which proteins?
A)
Actin
done
clear
B)
Myosin
done
clear
C)
Actomyosin
done
clear
D)
Myoglobin
done
clear
View Answer play_arrow
-
question_answer146) Ribosomes are produced in:
A)
nucleolus
done
clear
B)
cytoplasm
done
clear
C)
mitochondria
done
clear
D)
Golgi body
done
clear
View Answer play_arrow
-
question_answer147) Which of the following occurs more than one and less than five in a chromosome?
A)
Chromatid
done
clear
B)
Chromomere
done
clear
C)
Centromere
done
clear
D)
Telomere
done
clear
View Answer play_arrow
-
question_answer148) In which condition, the gene ratio remains constant for any species?
A)
Sexual selection
done
clear
B)
Random mating
done
clear
C)
Mutation
done
clear
D)
Gene flow
done
clear
View Answer play_arrow
-
question_answer149) Organisms which obtain energy by the oxidation of reduced inorganic compound are called:
A)
photoautotrophs
done
clear
B)
chemoautotrophs
done
clear
C)
saprozoic
done
clear
D)
coproheterotrophs
done
clear
View Answer play_arrow
-
question_answer150) In which animal, dimorphic nucleus is found?
A)
Amoeba
done
clear
B)
Trypanosoma gambiens
done
clear
C)
Plasmodium vivax
done
clear
D)
Paramecium caudatum
done
clear
View Answer play_arrow
-
question_answer151) In angiosperms, all die four microspores of tetrad are covered by a layer which is formed by:
A)
pectocellulose
done
clear
B)
callose
done
clear
C)
cellulose
done
clear
D)
sporopollenin
done
clear
View Answer play_arrow
-
question_answer152) In which of the following notochord is present in embryonic stage?
A)
All chordates
done
clear
B)
Some chordates
done
clear
C)
Vertebrates
done
clear
D)
Non-chordates
done
clear
View Answer play_arrow
-
question_answer153) Which type of association is found in between entomophilous flower and pollinating agent?
A)
Mutualism
done
clear
B)
Commensalism
done
clear
C)
Co-operation
done
clear
D)
Co-evolution
done
clear
View Answer play_arrow
-
question_answer154) What is the direction of micropyle in anatropous ovule?
A)
Upward
done
clear
B)
Downward
done
clear
C)
Right
done
clear
D)
Left
done
clear
View Answer play_arrow
-
question_answer155) Maximum green house gas is released by which country?
A)
India
done
clear
B)
France
done
clear
C)
USA
done
clear
D)
Britain
done
clear
View Answer play_arrow
-
question_answer156) In angiosperms, pollen tube liberates their male gametes into the:
A)
central cell
done
clear
B)
antipodal cell
done
clear
C)
egg cell
done
clear
D)
synergids
done
clear
View Answer play_arrow
-
question_answer157) Which of the following absorb light energy for photosynthesis?
A)
Chlorophyll
done
clear
B)
Water molecule
done
clear
C)
\[{{O}_{2}}\]
done
clear
D)
(d) RuBP
done
clear
View Answer play_arrow
-
question_answer158) In photosynthesis energy from light reaction to dark reaction is transferred in the form of:
A)
ADP
done
clear
B)
ATP
done
clear
C)
RuDP
done
clear
D)
chlorophyll
done
clear
View Answer play_arrow
-
question_answer159) Choose the correct match
A)
Bladderwort, sundew, venus fly trap: Nepenthes, Dionea, Drosera
done
clear
B)
Nepenthes, Utricularia, Vanda
done
clear
C)
Utricularia, Drosera, Dionea
done
clear
D)
Dionea, Trapa, Vanda
done
clear
View Answer play_arrow
-
question_answer160) How may ATP molecules are produced by aerobic oxidation of one molecule of glucose?
A)
2
done
clear
B)
4
done
clear
C)
38
done
clear
D)
34
done
clear
View Answer play_arrow
-
question_answer161) Opening and closing of stomata is due to:
A)
hormonal change in guard cells
done
clear
B)
change in turgor pressure of guard cells
done
clear
C)
gaseous exchange
done
clear
D)
respiration
done
clear
View Answer play_arrow
-
question_answer162) Which pigment absorbs (he red and far red light?
A)
Cytochrome
done
clear
B)
Phytochrome
done
clear
C)
Carotenoids
done
clear
D)
Chlorophyll
done
clear
View Answer play_arrow
-
question_answer163) Seed dormancy is due to the:
A)
ethylene
done
clear
B)
abscisic acid
done
clear
C)
IAA
done
clear
D)
starch
done
clear
View Answer play_arrow
-
question_answer164) Edible part in mango is:
A)
mesocarp
done
clear
B)
epicarp
done
clear
C)
endocarp
done
clear
D)
epidermis
done
clear
View Answer play_arrow
-
question_answer165) What is true for cleavage?
A)
Size of embryo increases
done
clear
B)
Size of cells decreases
done
clear
C)
Size of cells increases
done
clear
D)
Size of embryo decreases
done
clear
View Answer play_arrow
-
question_answer166) Geocarpic fruit is:
A)
potato
done
clear
B)
peanut
done
clear
C)
onion
done
clear
D)
garlic
done
clear
View Answer play_arrow
-
question_answer167) In which animal nerve cell is present but brain is absent?
A)
Sponge
done
clear
B)
Earthworm
done
clear
C)
Cockroach
done
clear
D)
Hydra
done
clear
View Answer play_arrow
-
question_answer168) In bacteria, plasmid is:
A)
extrachromosomal material
done
clear
B)
main DNA
done
clear
C)
non-functional DNA
done
clear
D)
repetetive gene
done
clear
View Answer play_arrow
-
question_answer169) Bamboo plant is growing in a far forest then what will be the trophic level of it?
A)
First trophic level \[({{T}_{1}})\]
done
clear
B)
Second trophic level \[({{T}_{2}})\]
done
clear
C)
Third trophic level \[({{T}_{3}})\]
done
clear
D)
Fourth trophic level \[({{T}_{4}})\]
done
clear
View Answer play_arrow
-
question_answer170) Which of the following is a correct pair?
A)
Cuscuta - parasite
done
clear
B)
Dischidia ? insectivorous
done
clear
C)
Opuntia -predator
done
clear
D)
Capsella ?hydrophyte
done
clear
View Answer play_arrow
-
question_answer171) Two different species cannot live for long duration in the same niche or habitate. This law is:
A)
Allen's law
done
clear
B)
Mendel's law
done
clear
C)
Gause's competitive exclusion principal
done
clear
D)
Weismann's theory
done
clear
View Answer play_arrow
-
question_answer172) A gene is said to be dominant if:
A)
it expresses it?s effect only in homozygous stage
done
clear
B)
it expresses only in heterozygous condition
done
clear
C)
it expresses in both homozygous and heterozygous conditions
done
clear
D)
it is never expressed in any condition
done
clear
View Answer play_arrow
-
question_answer173) Pleiotropic gene is:
A)
haemophilia
done
clear
B)
thalassemia
done
clear
C)
sickle cell anaemia
done
clear
D)
colour blindness
done
clear
View Answer play_arrow
-
question_answer174) Four radial vascular bundles are found in:
A)
dicot root
done
clear
B)
monocot root
done
clear
C)
dicot stem
done
clear
D)
monocot stem
done
clear
View Answer play_arrow
-
question_answer175) In E. coli, during lactose metabolism repressor binds to:
A)
regulator gene
done
clear
B)
operator gene
done
clear
C)
structural gene
done
clear
D)
promoter gene
done
clear
View Answer play_arrow
-
question_answer176) Vessels are found in:
A)
all angiosperms and some gymnosperms
done
clear
B)
most of the angiosperms and few gymnosperms
done
clear
C)
all angiosperms, all gymnosperms and some pteridopytes
done
clear
D)
all pteridophytes
done
clear
View Answer play_arrow
-
question_answer177) Jacob and Monod studied lactose metabolism in E. coli and proposed operon concept. Operon concept applicable for:
A)
all prokaryotes
done
clear
B)
all prokaryotes and some eukaryotes
done
clear
C)
all prokaryotes and all eukaryotes
done
clear
D)
all prokaryotes and some protozoans
done
clear
View Answer play_arrow
-
question_answer178) Out of 64 codons, 61 codons code for 20 type of amino acids; it is called:
A)
degeneracy of genetic code
done
clear
B)
overlapping of gene
done
clear
C)
wobbling of codon
done
clear
D)
universality of codon
done
clear
View Answer play_arrow
-
question_answer179) A diseased man marries a normal woman and they get three daughters and five sons. All the daughters were diseased and sons were normal. The gene of this disease is:
A)
sex-linked dominant
done
clear
B)
sex-linked recessive
done
clear
C)
sex-limited character
done
clear
D)
autosomal dominant
done
clear
View Answer play_arrow
-
question_answer180) In a DNA percentage of thymine is 20. What is the percentage of guanine?
A)
20%
done
clear
B)
40%
done
clear
C)
30%
done
clear
D)
60%
done
clear
View Answer play_arrow
-
question_answer181) Which of the following is the example of sex-linked disease?
A)
AIDS
done
clear
B)
Colour blindness
done
clear
C)
Syphilis
done
clear
D)
Gonorrohoea
done
clear
View Answer play_arrow
-
question_answer182) Main function of lenticel is:
A)
transpiration
done
clear
B)
guttation
done
clear
C)
gaseous exchange
done
clear
D)
bleeding
done
clear
View Answer play_arrow
-
question_answer183) Which steroid is used for transformation?
A)
Cortisol
done
clear
B)
Cholesterol
done
clear
C)
Testosterone
done
clear
D)
Progesterone
done
clear
View Answer play_arrow
-
question_answer184) Which statements is correct for bacterial transduction?
A)
Transfer of some genes from one bacteria to another bacteria through virus
done
clear
B)
Transfer of genes from one bacteria to another bacteria by conjugation
done
clear
C)
Bacteria obtained its DNA directly
done
clear
D)
Bacteria obtained DNA from other external source
done
clear
View Answer play_arrow
-
question_answer185) Transformation experiment was first performed on which bacteria?
A)
E. coli
done
clear
B)
Diplococcus pneumonia
done
clear
C)
Salmonella
done
clear
D)
Pasteurella pestis
done
clear
View Answer play_arrow
-
question_answer186) A plant of \[{{F}_{1}}\]-generation has genotype "AABbCC". On selling of this plant, the phenotypic ratio in \[{{F}_{2}}\]-generation will be:
A)
3 : 1
done
clear
B)
1 : 1
done
clear
C)
9 : 3 : 3 : 1
done
clear
D)
27 : 9 : 9 : 9 : 3 : 3 : 3 : 1
done
clear
View Answer play_arrow
-
question_answer187) What is the reason of formation of erobryoid from pollen grain in tissue culture medium?
A)
Cellular totipotency
done
clear
B)
Organogenesis
done
clear
C)
Double fertilization
done
clear
D)
Test tube culture
done
clear
View Answer play_arrow
-
question_answer188) If a diploid cell is treated with colchicine, it becomes:
A)
triploid
done
clear
B)
tetraploid
done
clear
C)
diploid
done
clear
D)
monoploid
done
clear
View Answer play_arrow
-
question_answer189) Axilliary bud and terminal bud are derived from the activity of:
A)
lateral meristem
done
clear
B)
intercalary meristem
done
clear
C)
apical meristem
done
clear
D)
parenchyma
done
clear
View Answer play_arrow
-
question_answer190) Which of the following crops have been brought to India from New world?
A)
Cashewnut, potato, rubber
done
clear
B)
Mango, tea
done
clear
C)
Tea, rubber, mango
done
clear
D)
Coffee
done
clear
View Answer play_arrow
-
question_answer191) Nucleus of a donor embryonal cell/somatic cell is transferred to an enucleated egg cell. Then after the formation of organism, what shall be true?
A)
Organism will have extra-nuclear genes of the donor cell
done
clear
B)
Organism will have extra-nuclear genes of recipient cell
done
clear
C)
Organism will have extra-nuclear genes of both donor and recipient cell
done
clear
D)
Organism will have nuclear genes of recipient cell
done
clear
View Answer play_arrow
-
question_answer192) Which of the following enzymes are used to join bits of DNA?
A)
Ligase
done
clear
B)
Primase
done
clear
C)
DNA polymerase
done
clear
D)
Endonuclease
done
clear
View Answer play_arrow
-
question_answer193) Introduction of food plants developed by genetic engineering is not desirable because:
A)
economy of developing countries may suffer
done
clear
B)
these products are less tasty as compared to the already existing products
done
clear
C)
this method is costly
done
clear
D)
there is danger of introduction viruses and toxins with introduced crop
done
clear
View Answer play_arrow
-
question_answer194) Which of the following statement is true?
A)
Vessels are multicellular and with wide lumen
done
clear
B)
Tracheids are multicellular and with narrow lumen
done
clear
C)
Vessels are unicellular and with narrow lumen
done
clear
D)
Tracheids are unicellular and with wide lumen
done
clear
View Answer play_arrow
-
question_answer195) Which of the following reunites the exon segments after RNA splicing?
A)
RNA polymerase
done
clear
B)
RNA primase
done
clear
C)
RNA ligase
done
clear
D)
RNA protease
done
clear
View Answer play_arrow
-
question_answer196) Exon part of m-RNAs have code for:
A)
protein
done
clear
B)
lipid
done
clear
C)
carbohydrate
done
clear
D)
phospholipid
done
clear
View Answer play_arrow
-
question_answer197) There are three genes a, b, c, percentage of crossing over between a and b is 20%, b and c is 28% and a and c is 8%. What is the sequence of genes on chromosome?
A)
b, a, c
done
clear
B)
a, b, c
done
clear
C)
a, c, b
done
clear
D)
None of these
done
clear
View Answer play_arrow
-
question_answer198) Manipulation of DNA in genetic engineering became possible due to the discovery of:
A)
restriction endonuclease
done
clear
B)
DNA ligase
done
clear
C)
transcriptase
done
clear
D)
primase
done
clear
View Answer play_arrow
-
question_answer199) Lipids are insoluble in water because lipids molecules are:
A)
hydrophilic
done
clear
B)
hydrophobic
done
clear
C)
neutral
done
clear
D)
Zwitter ions
done
clear
View Answer play_arrow
-
question_answer200) Collagen is:
A)
fibrous protein
done
clear
B)
globular protein
done
clear
C)
lipid
done
clear
D)
carbohydrate
done
clear
View Answer play_arrow
