-
question_answer1) Planck's constant has the dimensions of:
A)
linear momentum
done
clear
B)
angular momentum
done
clear
C)
energy
done
clear
D)
power
done
clear
View Answer play_arrow
-
question_answer2) If \[\vec{A}\] and \[\vec{B}\] are two vectors such that \[|\vec{A}+\vec{B}|\,=\,|\vec{A}-\vec{B}|\], the angle between vectors \[\vec{A}\] and \[\vec{B}\] is:
A)
\[{{0}^{\text{o}}}\]
done
clear
B)
\[{{60}^{\text{o}}}\]
done
clear
C)
\[{{90}^{\text{o}}}\]
done
clear
D)
\[{{120}^{\text{o}}}\]
done
clear
View Answer play_arrow
-
question_answer3) A stone is thrown vertically upwards. When stone is at a height half of its maximum height, its speed is 10 m/s; men die maximum height attained by the stone is \[(g=10\,m/{{s}^{2}})\]:
A)
8 m
done
clear
B)
10 m
done
clear
C)
15 m
done
clear
D)
20 m
done
clear
View Answer play_arrow
-
question_answer4) 1 kg body explodes into three fragments. The ratio of their masses is 1 : 1: 3. The fragments of same mass move perpendicular to each other with speeds 30 m/s, while the heavier part remains in the initial direction. The speed of heavier part is:
A)
\[\frac{10}{\sqrt{2}}\,m/s\]
done
clear
B)
\[10\sqrt{2}\,m/s\]
done
clear
C)
\[20\sqrt{2}\,m/s\]
done
clear
D)
\[30\sqrt{2}\,m/s\]
done
clear
View Answer play_arrow
-
question_answer5) A particle of mass M is revolving along a circle of radius R and another particle of mass m is revolving in a circle of radius r. If time periods of both particles are same, then the ratio of their angular velocities is:
A)
1
done
clear
B)
\[\frac{R}{r}\]
done
clear
C)
\[\frac{r}{R}\]
done
clear
D)
\[\sqrt{\frac{R}{r}}\]
done
clear
View Answer play_arrow
-
question_answer6) A wheel of bicycle is rolling without slipping on a level road. The velocity of the centre of mass is \[{{v}_{cm}};\] then true statement is:
A)
the velocity of point A is \[2{{v}_{cm}}\]and velocity of point B is zero
done
clear
B)
the velocity of point A is zero and velocity of points is \[2{{v}_{cm}}\]
done
clear
C)
the velocity of point A is \[2{{v}_{cm}}\] and velocity of point B is \[-{{v}_{cm}}\]
done
clear
D)
the velocities of both A and B are \[{{v}_{cm}}\]
done
clear
View Answer play_arrow
-
question_answer7) A child is swinging a swing. Minimum and maximum heights of swing from earth?s surface are 0.75 m and 2m respectively. The maximum velocity of this swing is:
A)
5 m/s
done
clear
B)
10 m/s
done
clear
C)
15 m/s
done
clear
D)
20 m/s
done
clear
View Answer play_arrow
-
question_answer8) In SHM restoring force is \[F=-kx,\] where k is force constant, x is displacement and A is amplitude of motion, then total energy depends upon:
A)
k, A and M
done
clear
B)
k, x, M
done
clear
C)
k, A
done
clear
D)
k, x
done
clear
View Answer play_arrow
-
question_answer9) A stone is thrown at an angle of \[{{45}^{\text{o}}}\] to the horizontal with kinetic energy K. The kinetic energy at the highest point is:
A)
\[\frac{K}{2}\]
done
clear
B)
\[\frac{K}{\sqrt{2}}\]
done
clear
C)
K
done
clear
D)
zero
done
clear
View Answer play_arrow
-
question_answer10) A player takes 0.1 s in catching a ball of mass 150 g moving with velocity of 20 m/s. The force imparted by the ball on the hands of the player is:
A)
0.3 N
done
clear
B)
3 N
done
clear
C)
30 N
done
clear
D)
300 N
done
clear
View Answer play_arrow
-
question_answer11) A body attains a height equal to the radius of the earth. The velocity of the body with which it was projected is:
A)
\[\sqrt{\frac{GM}{R}}\]
done
clear
B)
\[\sqrt{\frac{2GM}{R}}\]
done
clear
C)
\[\sqrt{\frac{5}{4}\,\frac{GM}{R}}\]
done
clear
D)
\[\sqrt{\frac{3GM}{R}}\]
done
clear
View Answer play_arrow
-
question_answer12) Equations of two progressive waves are given by \[{{y}_{1}}=a\sin \,(\omega t-{{\phi }_{1}})\] and \[{{y}_{2}}=a\sin \,(\omega t-{{\phi }_{2}})\]. If amplitude and time period of resultant wave are same as that of both the waves, then \[({{\phi }_{1}}-{{\phi }_{2}})\,\] is:
A)
\[\frac{\pi }{3}\]
done
clear
B)
\[\frac{2\pi }{3}\]
done
clear
C)
\[\frac{\pi }{6}\]
done
clear
D)
\[\frac{\pi }{4}\]
done
clear
View Answer play_arrow
-
question_answer13) A block of mass 1 kg is placed on a truck which accelerates with acceleration \[5\,m/{{s}^{2}}\]. The coefficient of static friction between the block and truck is 0.6. The frictional force acting on the block is:
A)
5 N
done
clear
B)
6 N
done
clear
C)
5.88 N
done
clear
D)
4.6 N
done
clear
View Answer play_arrow
-
question_answer14) A wave enters to water from air. In air frequency, wavelength, intensity and velocity are \[{{n}_{1}},\,{{\lambda }_{1}},\,{{I}_{1}}\] and \[{{v}_{1}}\] respectively. In water the corresponding quantities are \[{{n}_{2}},\,{{\lambda }_{2}},\,{{I}_{2}}\] and \[{{v}_{2}}\] respectively; then:
A)
\[{{I}_{1}}={{I}_{2}}\]
done
clear
B)
\[{{n}_{1}}={{n}_{2}}\]
done
clear
C)
\[{{v}_{1}}={{v}_{2}}\]
done
clear
D)
\[{{\lambda }_{1}}={{\lambda }_{2}}\]
done
clear
View Answer play_arrow
-
question_answer15) A force of 250 N is required to lift a 75 kg mass through a pulley system. In order to lift the mass through 3 m, the rope has to be pulled through 12 m. The efficiency of system is:
A)
50%
done
clear
B)
75%
done
clear
C)
33%
done
clear
D)
90%
done
clear
View Answer play_arrow
-
question_answer16) Two springs A and B have force constants \[{{k}_{A}}\] and \[{{k}_{B}}\] such that \[{{k}_{B}}=2{{k}_{A}}\]. The four ends of the springs are stretched by the same force, If energy stored in spring A is E, then energy stored in spring B is:
A)
E/2
done
clear
B)
2 E
done
clear
C)
E
done
clear
D)
4 E
done
clear
View Answer play_arrow
-
question_answer17) The wavelength corresponding to maximum intensity of radiation emitted by a source at temperature 2000K is \[\lambda \], then what is the wavelength corresponding to maximum intensity of radiation at temperature 3000 K?
A)
\[\frac{2}{3}\lambda \]
done
clear
B)
\[\frac{16}{81}\lambda \]
done
clear
C)
\[\frac{81}{16}\lambda \]
done
clear
D)
\[\frac{4}{3}\lambda \]
done
clear
View Answer play_arrow
-
question_answer18) The temperatures of source and sink of a heat engine are \[{{127}^{\text{o}}}C\] and \[{{27}^{\text{o}}}C\] respectively. An inventor claims its efficiency to be 26% then:
A)
it is impossible
done
clear
B)
it is possible with high probability
done
clear
C)
it is possible with low probability
done
clear
D)
data are insufficient
done
clear
View Answer play_arrow
-
question_answer19) The equation of a wave is given by: \[y=a\sin \left( 100t-\frac{x}{10} \right)\], where x and y are in metre and t in second; then velocity of wave is:
A)
0.1 m/s
done
clear
B)
10 m/s
done
clear
C)
100 m/s
done
clear
D)
1000 m/s
done
clear
View Answer play_arrow
-
question_answer20) The frequency of a vibrating wire is \[n\]. If tension is doubled, density is halved and diameter is doubled, then new frequency will be:
A)
n
done
clear
B)
\[\frac{n}{\sqrt{2}}\]
done
clear
C)
2n
done
clear
D)
4n
done
clear
View Answer play_arrow
-
question_answer21) Which of the following phenomena exhibits particle's nature of light?
A)
Interference
done
clear
B)
Diffraction
done
clear
C)
Polarisation
done
clear
D)
Photoelectric effect
done
clear
View Answer play_arrow
-
question_answer22) Transmission of light in optical fibre is due to:
A)
scattering
done
clear
B)
diffraction
done
clear
C)
polarization
done
clear
D)
multiple total internal reflections
done
clear
View Answer play_arrow
-
question_answer23) Ozone layer in atmosphere is useful, because it:
A)
stops ultraviolet radiation
done
clear
B)
absorbs polluent gases
done
clear
C)
stops green house effect
done
clear
D)
stops increase in temperature of atmosphere
done
clear
View Answer play_arrow
-
question_answer24) Refractive index of water is 5/3. A light source is placed in water at a depth of 4 m. Then what must be the minimum radius of disc placed on water surface so that the light of source can be stopped?
A)
3 m
done
clear
B)
4 m
done
clear
C)
5 m
done
clear
D)
\[\infty \]
done
clear
View Answer play_arrow
-
question_answer25) A light source is at a distance d from a photoelectric cell, then the number of photoelectrons emitted from the cell is n. If the distance of light source and cell is reduced to half, then the number of photoelectrons emitted will become:
A)
\[\frac{n}{2}\]
done
clear
B)
2n
done
clear
C)
4n
done
clear
D)
n
done
clear
View Answer play_arrow
-
question_answer26) Tangent galvanometer measures:
A)
capacitance
done
clear
B)
current
done
clear
C)
resistance
done
clear
D)
potential difference
done
clear
View Answer play_arrow
-
question_answer27) The reactance of a capacitor of capacitance C is X. If both the frequency and capacitance be doubled, then new reactance will be:
A)
X
done
clear
B)
2X
done
clear
C)
4X
done
clear
D)
\[\frac{X}{4}\]
done
clear
View Answer play_arrow
-
question_answer28) Which of the following is positively charge?
A)
\[\alpha \]-particle
done
clear
B)
\[\beta \]-particle
done
clear
C)
\[\gamma \]-rays
done
clear
D)
X-rays
done
clear
View Answer play_arrow
-
question_answer29) In a parallel plate capacitor, the distance between the plates is d and potential difference across plates is V. Energy stored per unit volume between the plates of capacitor is:
A)
\[\frac{{{Q}^{2}}}{2{{V}^{2}}}\]
done
clear
B)
\[\frac{1}{2}{{\varepsilon }_{0}}\frac{{{V}^{2}}}{{{d}^{2}}}\]
done
clear
C)
\[\frac{1}{2}\frac{{{V}^{2}}}{{{\varepsilon }_{0}}{{d}^{2}}}\]
done
clear
D)
\[\frac{1}{2}{{\varepsilon }_{0}}\frac{{{V}^{2}}}{{{d}^{2}}}\]
done
clear
View Answer play_arrow
-
question_answer30) A charge \[q\mu C\] is placed at the centre of a cube of a side 0.1 m, then the electric flux diverging from each face of the cube is:
A)
\[\frac{q\times {{10}^{-6}}}{24{{\varepsilon }_{0}}}\]
done
clear
B)
\[\frac{q\times {{10}^{-4}}}{{{\varepsilon }_{0}}}\]
done
clear
C)
\[\frac{q\times {{10}^{-6}}}{6{{\varepsilon }_{0}}}\]
done
clear
D)
\[\frac{q\times {{10}^{-4}}}{12{{\varepsilon }_{0}}}\]
done
clear
View Answer play_arrow
-
question_answer31) In which type of material the magnetic susceptibility does not depend on temperature?
A)
Diamagnetic
done
clear
B)
Paramagnetic
done
clear
C)
Ferromagnetic
done
clear
D)
Ferrite
done
clear
View Answer play_arrow
-
question_answer32) Torque acting on electric dipole of dipole moment \[\vec{p}\] placed in uniform electric field \[\vec{E}\] is:
A)
\[\vec{p}\times \vec{E}\]
done
clear
B)
\[\vec{p}\,.\,\vec{E}\]
done
clear
C)
\[\vec{p}\times \vec{E}\times \vec{p}\]
done
clear
D)
\[\frac{\vec{E}\,.\,\vec{p}}{{{p}^{2}}}\]
done
clear
View Answer play_arrow
-
question_answer33) Current is flowing in a coil of area A and number of turns N, then magnetic moment of the coil M is equal to:
A)
\[NiA\]
done
clear
B)
\[\frac{Ni}{A}\]
done
clear
C)
\[\frac{Ni}{\sqrt{A}}\]
done
clear
D)
\[{{N}^{2}}Ai\]
done
clear
View Answer play_arrow
-
question_answer34) Si and Cu are cooled to a temperature of 300 K, then resistivity:
A)
for Si increases and for Cu decreases
done
clear
B)
for Cu increases and for Si decrease
done
clear
C)
deceases for both Si and Cu
done
clear
D)
increases for both Si and Cu
done
clear
View Answer play_arrow
-
question_answer35) In a Wheatstone's bridge resistance of each of the four sides is \[10\,\,\Omega \]. If the resistance of the galvanometer is also \[10\,\,\Omega \] then effective resistance of the bridge will be:
A)
\[10\,\,\Omega \]
done
clear
B)
\[5\,\,\Omega \]
done
clear
C)
\[20\,\,\Omega \]
done
clear
D)
\[40\,\,\Omega \]
done
clear
View Answer play_arrow
-
question_answer36) In an inductor of self-inductance \[L=2\,mH\], current changes with time according to relation \[i={{t}^{2}}{{e}^{-t}}\,.\] At what time emf is zero?
A)
4 s
done
clear
B)
3 s
done
clear
C)
2 s
done
clear
D)
1 s
done
clear
View Answer play_arrow
-
question_answer37) Resistivity of potentiometer wire is \[{{10}^{-7}}\] ohm-metre and its area of cross-section is \[{{10}^{-6}}\,{{m}^{2}}\]. When a current i = 0.1 A flows through the wire, its potential gradient is:
A)
\[{{10}^{-2}}\,V/m\]
done
clear
B)
\[{{10}^{-4}}\,V/m\]
done
clear
C)
0.1 V/m
done
clear
D)
10 V/m
done
clear
View Answer play_arrow
-
question_answer38) In X-rays diffraction experiment distance between atomic lattice planes of diffraction grating is \[2.8\times {{10}^{-10}}\,m\], then the maximum wavelength of X-rays (in metre) is:
A)
2.5
done
clear
B)
\[5.6\times {{10}^{-10}}\]
done
clear
C)
\[4\times {{10}^{-10}}\]
done
clear
D)
\[4.6\times {{10}^{-10}}\]
done
clear
View Answer play_arrow
-
question_answer39) Rate of heat flow through a cylindrical rod is \[{{H}_{1}}\]. Temperatures of ends of rod are \[{{T}_{1}}\] and \[{{T}_{2}}\]. If all the dimensions of rod become double and temperature difference remains same and rate of heat flow becomes \[{{H}_{2}}\]. Then:
A)
\[{{H}_{2}}=2{{H}_{1}}\]
done
clear
B)
\[{{H}_{2}}=\frac{{{H}_{1}}}{2}\]
done
clear
C)
\[{{H}_{2}}=\frac{{{H}_{1}}}{4}\]
done
clear
D)
\[{{H}_{2}}=4{{H}_{1}}\]
done
clear
View Answer play_arrow
-
question_answer40) In a certain region of space electric field \[\vec{E}\] and magnetic field \[\mathbf{\vec{B}}\] are perpendicular to each other and an electron enters in region perpendicular to the direction of \[\vec{B}\] and \[\vec{E}\] both and moves undeflected, then velocity of electron is:
A)
\[\frac{|\vec{E}|}{|\vec{B}|}\]
done
clear
B)
\[\vec{E}\times \vec{B}\]
done
clear
C)
\[\frac{|\vec{B}|}{|\vec{E}|}\]
done
clear
D)
\[\vec{E}.\vec{B}\]
done
clear
View Answer play_arrow
-
question_answer41) A charged particle of charge q and mass m enters perpendicularly in a magnetic field \[\vec{B}\]. Kinetic energy of the particle is E; then frequency of rotation is:
A)
\[\frac{qB}{m\pi }\]
done
clear
B)
\[\frac{qB}{2\pi m}\]
done
clear
C)
\[\frac{qBM}{2\pi m}\]
done
clear
D)
\[\frac{qB}{2\pi E}\]
done
clear
View Answer play_arrow
-
question_answer42) In a common-base configuration of a transistor \[\frac{\Delta {{i}_{C}}}{\Delta {{i}_{E}}}=0.98\] then current gain in common emitter configuration of transistor will be:
A)
49
done
clear
B)
98
done
clear
C)
4.9
done
clear
D)
24.5
done
clear
View Answer play_arrow
-
question_answer43)
If internal resistance of cell is negligible, then current flowing through the circuit is: 
A)
\[\frac{3}{50}\,A\]
done
clear
B)
\[\frac{5}{50}\,A\]
done
clear
C)
\[\frac{4}{50}A\]
done
clear
D)
\[\frac{2}{50}\,A\]
done
clear
View Answer play_arrow
-
question_answer44)
The truth table given below represents: | Input | Output |
| A | B | Y |
| 1 | 1 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 0 | 0 | 1 |
A)
NOT gate
done
clear
B)
OR gate
done
clear
C)
XOR gate
done
clear
D)
NAND gate
done
clear
View Answer play_arrow
-
question_answer45) \[{{m}_{p}}\] and \[{{m}_{n}}\] are masses of proton and neutron respectively. An element of mass M has Z protons and N neutrons then:
A)
\[M>Z{{m}_{p}}+N{{m}_{n}}\]
done
clear
B)
\[M=Z{{m}_{p}}+N{{m}_{n}}\]
done
clear
C)
\[M<Z{{m}_{p}}+N{{m}_{n}}\]
done
clear
D)
M may be greater than, less than or equal to \[Z{{m}_{p}}+Z{{m}_{n}},\] depending on nature of element
done
clear
View Answer play_arrow
-
question_answer46) In nuclear fission process, energy is released because:
A)
mass of products is more than mass of nucleus
done
clear
B)
total binding energy of products formed due to nuclear fission is more than the parent fissionable material
done
clear
C)
total binding energy of products formed due to nuclear fission is less than parent fissionable material
done
clear
D)
mass of some particles is converted into energy
done
clear
View Answer play_arrow
-
question_answer47) Half-life period of a radioactive substance is 6h. After 24 h activity is 0.01\[\mu \]C, what was the initial activity?
A)
0.04 \[\mu \]C
done
clear
B)
0.08 \[\mu \]C
done
clear
C)
0.24 \[\mu \]C
done
clear
D)
0.16 \[\mu \]C
done
clear
View Answer play_arrow
-
question_answer48) Half-life of a radioactive substance is 12.5 h and its mass is 256 g. After what time, the amount of remaining substance is 1g?
A)
75 h
done
clear
B)
100 h
done
clear
C)
125 h
done
clear
D)
150 h
done
clear
View Answer play_arrow
-
question_answer49) In compound X (n, \[\alpha \]) \[\to \] \[_{3}L{{l}^{7}}\], the element X is:
A)
\[_{2}H{{e}^{4}}\]
done
clear
B)
\[_{5}{{B}^{10}}\]
done
clear
C)
\[_{5}{{B}^{9}}\]
done
clear
D)
\[_{4}B{{e}^{11}}\]
done
clear
View Answer play_arrow
-
question_answer50) In bcc structure of lattice constant 'a', the minimum distance between atoms is:
A)
\[\frac{\sqrt{3}}{2}\,a\]
done
clear
B)
\[\sqrt{2}a\]
done
clear
C)
\[\frac{a}{\sqrt{2}}\]
done
clear
D)
\[\frac{a}{2}\]
done
clear
View Answer play_arrow
-
question_answer51)
The correct acidic order of following is: 
A)
I > II > III
done
clear
B)
III > I > II
done
clear
C)
II > III > I
done
clear
D)
I > III > II
done
clear
View Answer play_arrow
-
question_answer52) chlorination of n-butane, will be:
A)
meso form
done
clear
B)
racemic mixture
done
clear
C)
d-form
done
clear
D)
-form
done
clear
View Answer play_arrow
-
question_answer53) Which alkene on ozonolysis gives and ?
A)
done
clear
B)
\[C{{H}_{3}}C{{H}_{2}}CH=CHC{{H}_{2}}C{{H}_{3}}\]
done
clear
C)
\[C{{H}_{3}}C{{H}_{2}}CH=CHC{{H}_{3}}\]
done
clear
D)
\[C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,=CHC{{H}_{3}}\]
done
clear
View Answer play_arrow
-
question_answer54) Intermediates formed during reaction of \[\underset{\begin{smallmatrix} |\,\,| \\ O \end{smallmatrix}}{\mathop{RCN{{H}_{2}}}}\,\] with Br2 and KOH are:
A)
RCONHBr and RNCO
done
clear
B)
RNHCOBr and RNCO
done
clear
C)
RNHBr and KCONHBr
done
clear
D)
\[RCONB{{r}_{2}}\]
done
clear
View Answer play_arrow
-
question_answer55) An organic compound \[A({{C}_{4}}{{H}_{9}}Cl)\] on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative then, A is:
A)
t-butyl chloride
done
clear
B)
sec- butyl chloride
done
clear
C)
iso butyl chloride
done
clear
D)
n-butyl chloride
done
clear
View Answer play_arrow
-
question_answer56) Which of the following is incorrect?
A)
\[FeC{{l}_{3}}\] is used in detection of phenol
done
clear
B)
Fehling solution is used in detection of glucose
done
clear
C)
Tollen's reagent is used in detection of unsaturation
done
clear
D)
\[NaHS{{O}_{3}}\] is used in detection of carbonyl compound
done
clear
View Answer play_arrow
-
question_answer57) Which one of the following gives positive Fehling's solution test?
A)
Sucrose
done
clear
B)
Glucose
done
clear
C)
Fats
done
clear
D)
Protein
done
clear
View Answer play_arrow
-
question_answer58) Which one of the following is not corral matched?
A)
Neoprene \[{{\left[ \begin{align} & \\ & -C{{H}_{2}}-\underset{|}{\mathop{C}}\,=CH-C{{H}_{2}}- \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Cl \\ \end{align} \right]}_{n}}\]
done
clear
B)
Nylone-6, 6 \[{{\left[ \begin{align} & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O \\ & -NH-{{(C{{H}_{2}})}_{6}}-NH-CO-(N{{H}_{2}})-\overset{||}{\mathop{C}}\,-O-O \\ \end{align} \right]}_{n}}\]
done
clear
C)
Terylene
D)
done
clear
View Answer play_arrow
-
question_answer59) Which of the following is correct?
A)
Cycloheptane is an aromatic compound
done
clear
B)
Diastase is an enzyme
done
clear
C)
Acetophenone is an ether
done
clear
D)
All of the above
done
clear
View Answer play_arrow
-
question_answer60) The incorrect IUPAC name is:
A)
\[\underset{\text{2, methyl-3-butanone}}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}}}\,\]
done
clear
B)
\[\underset{\text{2, 3-dimethyl pentane}}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,-\underset{\begin{smallmatrix} | \\ C{{H}_{2}}-C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}}}\,\]
done
clear
C)
\[\underset{\text{4-methyl-2-pentyne}}{\mathop{C{{H}_{3}}-C\equiv CCH{{(C{{H}_{3}})}_{2}}}}\,\]
done
clear
D)
\[\underset{\text{2-bromo-3-chlorobutane}}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\mathop{CH}}\,-\underset{\begin{smallmatrix} | \\ Br \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}}}\,\]
done
clear
View Answer play_arrow
-
question_answer61) In preparation of alkene from alcohol using \[A{{l}_{2}}{{O}_{3}}\] which is effective factor?
A)
Porosity of \[A{{l}_{2}}{{O}_{3}}\]
done
clear
B)
Temperature
done
clear
C)
Concentration
done
clear
D)
Surface area of \[A{{l}_{2}}{{O}_{3}}\]
done
clear
View Answer play_arrow
-
question_answer62) Which one of the following is correct?
A)
On reduction of any aldehyde gives secondary alcohol
done
clear
B)
Reaction of vegetable oil with \[{{H}_{2}}S{{O}_{4}}\] gives glycerin
done
clear
C)
Alcoholic iodine with NaOH gives iodoform
done
clear
D)
Sucrose on reaction with \[NaCl\] gives invert sugar
done
clear
View Answer play_arrow
-
question_answer63) Which of the following is correct about H-bonding in nucleotide?
A)
A-T, G-C
done
clear
B)
A-G, T-C
done
clear
C)
G-T, A-C
done
clear
D)
A-A, T-T
done
clear
View Answer play_arrow
-
question_answer64) Which of the following is correct statement?
A)
Starch is polymer of \[\alpha \]-glucose
done
clear
B)
Amylose is a component of cellulose
done
clear
C)
Protiens are composed of only one type of amino acid
done
clear
D)
In cyclic structure of fructose, there are four carbons and one oxygen atom
done
clear
View Answer play_arrow
-
question_answer65) Which statement is incorrect about peptide bond \[-\overset{\begin{smallmatrix} O \\ |\,\,| \end{smallmatrix}}{\mathop{C}}\,-\overset{\centerdot \,\,\centerdot }{\mathop{NH}}\,-\]?
A)
C?N bond length in proteins is longer than usual bond length of N-bond
done
clear
B)
Spectroscopic analysis show planar structure of \[-C-\underset{\begin{smallmatrix} |\,\,\,| \\ O \end{smallmatrix}}{\mathop{NH}}\,-\] group
done
clear
C)
C?N bond length in proteins is smaller than usual bond length of C?N bond
done
clear
D)
None of the above
done
clear
View Answer play_arrow
-
question_answer66) In steam distillation of toluene, the pressure of toluene in vapour is:
A)
equal pressure of barometer
done
clear
B)
less than pressure of barometer
done
clear
C)
equal to vapour pressure to toluene in simple distillation
done
clear
D)
more than vapour pressure of toluene in simple distillation
done
clear
View Answer play_arrow
-
question_answer67) A compound of molecular formula \[{{C}_{7}}{{H}_{16}}\] shows optical isomerism, compound will be:
A)
2, 3-dimethyI pentane
done
clear
B)
2, 2-dimethyl butane
done
clear
C)
2-methyl hexane
done
clear
D)
none of the above
done
clear
View Answer play_arrow
-
question_answer68) Change in enthalpy for reaction \[2{{H}_{2}}{{O}_{2}}(l)\xrightarrow{{}}2{{H}_{2}}O(l)+{{O}_{2}}(g)\] If heat of formation of \[{{H}_{2}}{{O}_{2}}(l)\] and \[{{H}_{2}}O(l)\]are - 188 and -286 kJ/mol respectively:
A)
-196 k J/mol
done
clear
B)
+ 196 k J/mol
done
clear
C)
+ 948 k J/mol
done
clear
D)
- 948 k J/mol
done
clear
View Answer play_arrow
-
question_answer69) When 1 mole gas is heated at constant volume, temperature is raised from 298 to 308K. Heat supplied to the gas is 500 J. Then which statement is correct?
A)
q = w = 500 J, \[\Delta \]U = 0
done
clear
B)
q = \[\Delta \]U = 500 J, w = 0
done
clear
C)
q = w = 500 J, \[\Delta \]U = 0
done
clear
D)
\[\Delta \]U = 0, q = w = -500 J
done
clear
View Answer play_arrow
-
question_answer70) Enthalpy of \[C{{H}_{4}}+\frac{1}{2}{{O}_{2}}\to C{{H}_{3}}OH\] negative. If enthalpy of combustion of \[C{{H}_{4}}\] and \[C{{H}_{3}}OH\] are x and y respectively. Then which relation is correct?
A)
x > y
done
clear
B)
x < y
done
clear
C)
x = y
done
clear
D)
x > y
done
clear
View Answer play_arrow
-
question_answer71) For the reactions \[2{{N}_{2}}{{O}_{5}}\to 4N{{O}_{2}}+{{O}_{2}}\] rate and rate constant are \[1.02\times {{10}^{-4}}\] and \[3.4\times {{10}^{-5}}\,{{s}^{-1}}\] respectively, then cone, of \[{{N}_{2}}{{O}_{5}}\] at that time will be:
A)
1.732
done
clear
B)
3
done
clear
C)
\[1.02\times {{10}^{-4}}\]
done
clear
D)
\[3.4\times {{10}^{5}}\]
done
clear
View Answer play_arrow
-
question_answer72) A human body required the 0.01 M activity of radioactive substance after 24 hour. Half-life of radioactive is 6 hour. Then injection of maximum activity of radioactive substance that can be injected:
A)
0.08
done
clear
B)
0.04
done
clear
C)
0.16
done
clear
D)
0.32
done
clear
View Answer play_arrow
-
question_answer73) When a biochemical reaction is carried out in laboratory from out-side of human body in the absence of enzyme then of reaction Obtained is \[{{10}^{-6}}\] times, then activation energy of reaction in the presence of enzyme is:
A)
\[\frac{6}{RT}\]
done
clear
B)
P it required
done
clear
C)
Different from \[{{E}_{a}}\] obtained in laboratory
done
clear
D)
Cannot say any things
done
clear
View Answer play_arrow
-
question_answer74) Molarity of liquid HCl if density of solution is 1.17 g/cc:
A)
36.5
done
clear
B)
18.25
done
clear
C)
32.05
done
clear
D)
42.10
done
clear
View Answer play_arrow
-
question_answer75) Percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (at. wt. = 78.4), then minimum molecular weight of peroxidase anhydrous enzyme is:
A)
\[1.568\,\times {{10}^{4}}\]
done
clear
B)
\[1.568\,\times {{10}^{3}}\]
done
clear
C)
15.68
done
clear
D)
\[2.168\,\times {{10}^{4}}\]
done
clear
View Answer play_arrow
-
question_answer76) Specific volume of cylindrical virus particle is \[6.02\times {{10}^{-2}}\,cc/g\] whose radius and length are \[7\,\overset{\text{o}}{\mathop{\text{A}}}\,\] and \[10\,\overset{\text{o}}{\mathop{\text{A}}}\,\] respectively. If \[{{N}_{A}}=6.02\,\times {{10}^{23}}\] find molecular weight of virus:
A)
15.4 kg/mol
done
clear
B)
\[1.54\times {{10}^{4}}\,kg/mol\]
done
clear
C)
\[3.08\times {{10}^{4}}\,kg/mol\]
done
clear
D)
\[3.08\times {{10}^{3}}kg\,/mol\]
done
clear
View Answer play_arrow
-
question_answer77) Pure water can be obtained from sea water by:
A)
centrifugation
done
clear
B)
plasmolysis
done
clear
C)
reverse osmosis
done
clear
D)
sedimentation
done
clear
View Answer play_arrow
-
question_answer78) Standard electrode potentials are: \[F{{e}^{2+}}/Fe\], \[{{E}^{o}}=-0.44\] \[F{{e}^{3+}}/F{{e}^{2+}}\], \[{{E}^{o}}=0.77\] \[F{{e}^{2+}},\,F{{e}^{3+}}\] and Fe block are kept together, then:
A)
\[F{{e}^{3+}}\] increases
done
clear
B)
\[F{{e}^{3+}}\] decreases
done
clear
C)
\[\frac{F{{e}^{2+}}}{F{{e}^{3+}}}\] remains unchanged
done
clear
D)
\[F{{e}^{2+}}\] decreases
done
clear
View Answer play_arrow
-
question_answer79) Which is not correct regarding the adsorption of a gas on surface of solid?
A)
On increasing temperature adsorption increases continuously
done
clear
B)
Enthalpy and entropy change is ?ve
done
clear
C)
Adsorption is more for some specific substance
done
clear
D)
Reversible
done
clear
View Answer play_arrow
-
question_answer80) \[Pb{{O}_{2}}\xrightarrow{{}}PbO\,\,\Delta {{G}_{298}}<0\] \[Sn{{O}_{2}}\xrightarrow{{}}SnO\,\,\Delta {{G}_{298}}>0\] Most probable oxidation state of Pb and Sn will be:
A)
\[P{{b}^{4+}},\,S{{n}^{4+}}\]
done
clear
B)
\[P{{b}^{4+}},\,S{{n}^{2+}}\]
done
clear
C)
\[P{{b}^{2+}},\,S{{n}^{2+}}\]
done
clear
D)
\[P{{b}^{2+}},\,S{{n}^{4+}}\]
done
clear
View Answer play_arrow
-
question_answer81) Which of the following two are isostructural?
A)
\[Xe{{F}_{2}},\,IF_{2}^{-}\]
done
clear
B)
\[N{{H}_{3}},\,B{{F}_{3}}\]
done
clear
C)
\[CO_{3}^{2-},\,SO_{3}^{2-}\]
done
clear
D)
\[PC{{l}_{5}},\,IC{{l}_{5}}\]
done
clear
View Answer play_arrow
-
question_answer82) In which of the following, bond angle is maximum?
A)
\[N{{H}_{3}}\]
done
clear
B)
\[NH_{4}^{+}\]
done
clear
C)
\[PC{{l}_{3}}\]
done
clear
D)
\[SC{{l}_{2}}\]
done
clear
View Answer play_arrow
-
question_answer83) Which of the following statements is net correct?
A)
\[La{{(OH)}_{3}}\] is less basic than \[Li{{(OH)}_{3}}\]
done
clear
B)
In lanthanide series ionic radius of \[L{{n}^{3+}}\] ion decreases
done
clear
C)
La is actually an element of transition series rather lanthanide
done
clear
D)
Atomic radius of Zn and Hf are same because of lanthanide contraction
done
clear
View Answer play_arrow
-
question_answer84) Correct order of Ist ionisation potential (I.P.) among following elements Be, B, C, N, O is:
A)
B < Be < C < O < N
done
clear
B)
B < Be < C < N < O
done
clear
C)
Be < B < C < N < O
done
clear
D)
Be < B < C < O < N
done
clear
View Answer play_arrow
-
question_answer85) Which one of the following will give maximum number of isomers?
A)
\[[CO{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]\]
done
clear
B)
\[{{[Ni(en){{(N{{H}_{3}})}_{4}}]}^{2+}}\]
done
clear
C)
\[{{[Ni\,({{C}_{2}}{{O}_{4}})\,{{(en)}_{2}}]}^{2-}}\]
done
clear
D)
\[{{[Cr{{(SCN)}_{2}}{{(N{{H}_{3}})}_{4}}]}^{+}}\]
done
clear
View Answer play_arrow
-
question_answer86) Coordination number of \[Ni\] in \[{{[Ni{{({{C}_{2}}{{O}_{4}})}_{3}}]}^{4-}}\] is:
A)
3
done
clear
B)
6
done
clear
C)
4
done
clear
D)
2
done
clear
View Answer play_arrow
-
question_answer87) Which of the following organometallic compound has \[\sigma \] and \[\pi \] bond?
A)
\[[Fe({{\eta }^{5}}-{{C}_{5}}{{H}_{5}}){{ & }_{2}}]\]
done
clear
B)
\[K[PtC{{l}_{3}}({{\eta }^{2}}-{{C}_{2}}{{H}_{4}})]\]
done
clear
C)
\[{{[Co{{(CO)}_{5}}N{{H}_{3}}]}^{2+}}\]
done
clear
D)
\[Fe{{(C{{H}_{3}})}_{3}}\]
done
clear
View Answer play_arrow
-
question_answer88) Which statements is incorrect?
A)
\[Ni{{(CO)}_{4}}\]-Tetrahedral, paramagnetic
done
clear
B)
\[Ni(CN)_{4}^{2-}\]-Square planar, diamagnetic
done
clear
C)
\[Ni{{(CO)}_{4}}\]-Tetrahedral, diamagnetic
done
clear
D)
\[{{[Ni{{(Cl)}_{4}}]}^{2-}}\] Tetrahedral, paramagnetic
done
clear
View Answer play_arrow
-
question_answer89) In X ? H ???Y, X and Y both are electronegative elements:
A)
electron density on X will increase and on H will decrease
done
clear
B)
in both electron density will increase
done
clear
C)
in both electron density will decrease
done
clear
D)
on X electron density will decrease and at H increase
done
clear
View Answer play_arrow
-
question_answer90) Main axis of a diatomic molecule is z, molecular orbital \[{{p}_{x}}\] and \[{{p}_{y}}\] overlaps to form, which of the orbital?
A)
\[\pi \]-molecular orbital
done
clear
B)
\[\sigma \]-molecular orbital
done
clear
C)
\[\delta \]-molecular orbital
done
clear
D)
No bond will form
done
clear
View Answer play_arrow
-
question_answer91) Which of die following will exhibit maximum ionic conductivity?
A)
\[{{K}_{4}}[Fe{{(CN)}_{6}}]\]
done
clear
B)
\[[CO{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}\]
done
clear
C)
\[[Cu{{(N{{H}_{3}})}_{4}}]3C{{l}_{2}}\]
done
clear
D)
\[[Ni{{(CO)}_{4}}]\]
done
clear
View Answer play_arrow
-
question_answer92) The following quantum numbers are possible for how many orbital n = 3, 1 = 2, m = +2:
A)
1
done
clear
B)
2
done
clear
C)
3
done
clear
D)
4
done
clear
View Answer play_arrow
-
question_answer93) In \[H{{S}^{-}},\,\,{{I}^{-}},\,\,RN{{H}_{2}},\,\,N{{H}_{3}}\] order of proton accepting tendency will be:
A)
\[{{I}^{-}}>N{{H}_{3}}>RN{{H}_{2}}>H{{S}^{-}}\]
done
clear
B)
\[N{{H}_{3}}>RN{{H}_{2}}>H{{S}^{-}}>{{I}^{-}}\]
done
clear
C)
\[RN{{H}_{2}}>N{{H}_{3}}>H{{S}^{-}}>{{I}^{-}}\]
done
clear
D)
\[H{{S}^{-}}>RN{{H}_{2}}>N{{H}_{3}}>{{I}^{-}}\]
done
clear
View Answer play_arrow
-
question_answer94) The beans are cooked earlier in pressure cooker, because:
A)
bp increase with increasing pressure
done
clear
B)
bp decrease with increasing pressure
done
clear
C)
extra pressure of pressure cooker, softens the beans
done
clear
D)
internal energy is not lost while cooking in pressure cooker
done
clear
View Answer play_arrow
-
question_answer95) The most convenient method to protect the bottom of ship made of iron is:
A)
coating it with red lead oxide
done
clear
B)
white tin plating
done
clear
C)
connecting it with Mg block
done
clear
D)
connecting it with Pb block
done
clear
View Answer play_arrow
-
question_answer96) Zn convert its melted state to its solid state, it has hcp structure then find out number of nearest atom:
A)
6
done
clear
B)
8
done
clear
C)
12
done
clear
D)
4
done
clear
View Answer play_arrow
-
question_answer97) Nitrogen forms \[{{N}_{2}}\], but phosphorus when form \[{{P}_{2}}\] readily converted into \[{{P}_{4}},\] reason is:
A)
triple bond present between phosphorus atom
done
clear
B)
\[{{P}_{\pi }}-{{P}_{\pi }}\] bonding is weak
done
clear
C)
\[{{P}_{\pi }}-{{P}_{\pi }}\] bonding is strong
done
clear
D)
multiple bond form easily
done
clear
View Answer play_arrow
-
question_answer98) Ionisation constant of \[C{{H}_{3}}COOH\] is \[1.7\times {{10}^{-5}}\] and concentration of \[{{H}^{+}}\] ions is \[3.4\times {{10}^{-4}}\]. Then find out initial concentration of \[C{{H}_{3}}COOH\] molecules:
A)
\[3.4\times {{10}^{-4}}\]
done
clear
B)
\[3.4\times {{10}^{-3}}\]
done
clear
C)
\[6.8\times {{10}^{-4}}\]
done
clear
D)
\[6.8\times {{10}^{-3}}\]
done
clear
View Answer play_arrow
-
question_answer99) Solubility of a \[{{M}_{2}}S\] salt is \[3.5\times {{10}^{-6}},\] then find out solubility product:
A)
\[1.7\times {{10}^{-6}}\]
done
clear
B)
\[1.7\times {{10}^{-16}}\]
done
clear
C)
\[1.7\times {{10}^{-18}}\]
done
clear
D)
\[1.7\times {{10}^{-12}}\]
done
clear
View Answer play_arrow
-
question_answer100) If \[_{b}^{a}X\] species emit firstly a positron, then two \[\alpha \] and two \[\beta \] and in last one a is also emitted and finally convert in \[_{d}^{c}Y\] species so correct relation is:
A)
a = c + 12, d = b ? 5
done
clear
B)
a = c - 8, d = b ? 1
done
clear
C)
a = c - 6, d = b ? 0
done
clear
D)
a = c - 4, a = b ? 2
done
clear
View Answer play_arrow
-
question_answer101) Water enters a cell due to:
A)
O.P.
done
clear
B)
S.P.
done
clear
C)
T.P.
done
clear
D)
W.P.
done
clear
View Answer play_arrow
-
question_answer102) Proteinaceous pigment which controls the activities concerned with light is:
A)
phytochrome
done
clear
B)
chlorophyll
done
clear
C)
anthocyanin
done
clear
D)
carotcnoids
done
clear
View Answer play_arrow
-
question_answer103) Glycolate induces opening of stomata in:
A)
presence of oxygen
done
clear
B)
low \[C{{O}_{2}}\] concentration
done
clear
C)
high \[C{{O}_{2}}\] concentration
done
clear
D)
absence of \[C{{O}_{2}}\]
done
clear
View Answer play_arrow
-
question_answer104) Enzyme first used for nitrogen fixation is:
A)
nitrogenase
done
clear
B)
nitroreductase
done
clear
C)
transferase
done
clear
D)
transaminase
done
clear
View Answer play_arrow
-
question_answer105) Passive absorption of minerals depends on:
A)
temperature
done
clear
B)
temperature and metabolic inhibitor
done
clear
C)
metabolic inhibitor
done
clear
D)
humidity
done
clear
View Answer play_arrow
-
question_answer106) Maximum number of bases in plasmids discovered so far is:
A)
50 kilo base
done
clear
B)
500 kilo base
done
clear
C)
5000 kilo base
done
clear
D)
5 kilo base
done
clear
View Answer play_arrow
-
question_answer107) Half life period of \[{{C}^{14}}\] is:
A)
500 years
done
clear
B)
5000 years
done
clear
C)
50 years
done
clear
D)
\[5\times {{10}^{14}}\] years
done
clear
View Answer play_arrow
-
question_answer108) Which one is correctly matched?
A)
Vit. E-Tocopherol
done
clear
B)
Vit. D-Riboflavin
done
clear
C)
Vit. B-Calciferol
done
clear
D)
Vit. A-Thiamine
done
clear
View Answer play_arrow
-
question_answer109) Ratio of complementary genes is:
A)
9 : 3 : 4
done
clear
B)
12 : 3 : 1
done
clear
C)
9 : 3 : 3 : 4
done
clear
D)
9 : 7
done
clear
View Answer play_arrow
-
question_answer110) When dominant and recessive alleles express together it is called:
A)
co-dominance
done
clear
B)
dominance
done
clear
C)
amphidominance
done
clear
D)
pseudodominance
done
clear
View Answer play_arrow
-
question_answer111) A and B genes are linked. What shall be the genotype of progeny in a cross between AB/ab and ab/ab?
A)
AAbb and aabb
done
clear
B)
AaBb and aabb
done
clear
C)
AABB and aabb
done
clear
D)
None of the above
done
clear
View Answer play_arrow
-
question_answer112) Which statement is correct about centre of origin of plants?
A)
More diversity in varieties
done
clear
B)
Frequency of dominant gene is more
done
clear
C)
Climatic conditions more favourable
done
clear
D)
None of the above
done
clear
View Answer play_arrow
-
question_answer113) Probability of four sons to a couple is:
A)
\[\frac{1}{4}\]
done
clear
B)
\[\frac{1}{8}\]
done
clear
C)
\[\frac{1}{16}\]
done
clear
D)
\[\frac{1}{32}\]
done
clear
View Answer play_arrow
-
question_answer114) Before the European invaders which vegetable was/were absent in India?
A)
Potato and tomato
done
clear
B)
Simla mirch and brinjal
done
clear
C)
Maize and chichinda
done
clear
D)
Bitter gourd
done
clear
View Answer play_arrow
-
question_answer115) Which of the following is the pair of biofertiJizers?
A)
Azolla and BGA
done
clear
B)
Nostoc and legume
done
clear
C)
Rhizobium and grasses
done
clear
D)
Salmonella and E. coli
done
clear
View Answer play_arrow
-
question_answer116) Two non-allelic genes produce the new phenotype when present together but fail to do so independently, it is called:
A)
epistasis
done
clear
B)
polygene
done
clear
C)
non-complementary gene
done
clear
D)
complementary gene
done
clear
View Answer play_arrow
-
question_answer117) Which of the following cut the DNA at specific places?
A)
Restriction endonuclease EcoRI
done
clear
B)
Ligase
done
clear
C)
Exonuclease
done
clear
D)
Alkaline phosphatase
done
clear
View Answer play_arrow
-
question_answer118) Tetradyanamous condition occurs in:
A)
Cruciferae
done
clear
B)
Malvaceae
done
clear
C)
Solanaceae
done
clear
D)
Lilliaceae
done
clear
View Answer play_arrow
-
question_answer119) Which is correct pair for edible part?
A)
Tomato ? Thalamus
done
clear
B)
Maize ? Cotyledons
done
clear
C)
Guava ? Mesocarp
done
clear
D)
Date palm ? Pericarp
done
clear
View Answer play_arrow
-
question_answer120) Edible part of banana is:
A)
epicarp
done
clear
B)
mesocarp and less developed endocarp
done
clear
C)
endocarp and less developed mesocarp
done
clear
D)
epicarp and mesocarp
done
clear
View Answer play_arrow
-
question_answer121) Bicarpellary gynoecium and oblique overt occurs in:
A)
mustard
done
clear
B)
banana
done
clear
C)
Pisum
done
clear
D)
brinjal
done
clear
View Answer play_arrow
-
question_answer122) In Hydra, waste material of food digestion and nitrogenous waste material are removed from:
A)
mouth and mouth
done
clear
B)
body wall and body wall
done
clear
C)
mouth and body wall
done
clear
D)
mouth and tentacles
done
clear
View Answer play_arrow
-
question_answer123) What is the best pH of the soil for cultivation of plants?
A)
3. 4 ? 5. 4
done
clear
B)
6.5 ? 7.5
done
clear
C)
4.5 ? 8.5
done
clear
D)
5.5 ? 6.5
done
clear
View Answer play_arrow
-
question_answer124) Which fish selectively feeds on the larva of mosquito?
A)
Gambusia
done
clear
B)
Rohu
done
clear
C)
Clarias
done
clear
D)
Exocoetus
done
clear
View Answer play_arrow
-
question_answer125) Which one of the following is correct match?
A)
Reserpine ? Tranquiliser
done
clear
B)
Cocain ? Opiatic narcotic
done
clear
C)
Morphine ? Hallucinogenic
done
clear
D)
Bhang ? Analgesic
done
clear
View Answer play_arrow
-
question_answer126) What is BOD?
A)
The amount of \[{{O}_{2}}\] utilized by organisms in water
done
clear
B)
The amount of \[{{O}_{2}}\] utilized by microorganisms for decomposition
done
clear
C)
The total amount of \[{{O}_{2}}\] present in water
done
clear
D)
All of the above
done
clear
View Answer play_arrow
-
question_answer127) In grasses what happens in micro-spore mother cell for the formation of mature pollen grains?
A)
One meiotic and two mitotic divisions
done
clear
B)
One meiotic and one mitotic division
done
clear
C)
One meiotic division
done
clear
D)
One mitotic division
done
clear
View Answer play_arrow
-
question_answer128) What is the intensity of sound in normal conversation?
A)
10-20 dB
done
clear
B)
30-60 Db
done
clear
C)
70-90 dB
done
clear
D)
120-150 dB
done
clear
View Answer play_arrow
-
question_answer129) Advencive embryony in citrus is due to:
A)
nucellus
done
clear
B)
integuments
done
clear
C)
zygotic embryo
done
clear
D)
fertilized egg
done
clear
View Answer play_arrow
-
question_answer130) LSD is:
A)
hallucinogenic
done
clear
B)
sedative
done
clear
C)
stimulant
done
clear
D)
tranquiliser
done
clear
View Answer play_arrow
-
question_answer131) Which set is similar?
A)
Corpus leuteum ? Graafian follicles
done
clear
B)
Sebum ? sweat
done
clear
C)
Bundle of His ? pacemaker
done
clear
D)
Vit. \[{{B}_{7}}\] ? niacin
done
clear
View Answer play_arrow
-
question_answer132) Salmonella is related with:
A)
typhoid
done
clear
B)
polio
done
clear
C)
TB
done
clear
D)
tetanus
done
clear
View Answer play_arrow
-
question_answer133) Difference in Gram + and Gram - bacteria is due to:
A)
cell wall
done
clear
B)
cell membrane
done
clear
C)
ribosome
done
clear
D)
cytoplasm
done
clear
View Answer play_arrow
-
question_answer134) What is sarcomere?
A)
Part between two H-lines
done
clear
B)
Part between two A-lines
done
clear
C)
Part between two I-bands
done
clear
D)
Part between two Z-lines
done
clear
View Answer play_arrow
-
question_answer135) Which statement is correct for muscle contraction?
A)
Length of H-zone is decreased
done
clear
B)
Length of A-band remains constant
done
clear
C)
Length of l-band gets increased
done
clear
D)
Length of two Z-line get increased
done
clear
View Answer play_arrow
-
question_answer136) Frequency of an allele in an isolated population may change due to:
A)
genetic drift
done
clear
B)
gene flow
done
clear
C)
mutation
done
clear
D)
natural selection
done
clear
View Answer play_arrow
-
question_answer137) In Lederberg's replica plating experiment what was used to obtain streptomycin resistant strain?
A)
Minimal medium and streptomycin
done
clear
B)
Complete medium and streptomycin
done
clear
C)
Only minimal medium
done
clear
D)
Only complete medium
done
clear
View Answer play_arrow
-
question_answer138) Forthcoming generations are less adaptive than their parental generation due to:
A)
natural selection
done
clear
B)
mutation
done
clear
C)
genetic drift
done
clear
D)
adaptation
done
clear
View Answer play_arrow
-
question_answer139) During regeneration, modification of an organ to other organ is known as:
A)
morphalogenesis
done
clear
B)
epimorphosis
done
clear
C)
morphallaxis
done
clear
D)
acretionary growth
done
clear
View Answer play_arrow
-
question_answer140) Occurrence of endemic species in South America and Australia is due to:
A)
extinction of these species from other regions
done
clear
B)
continental separation
done
clear
C)
absence of terrestrial route to these places
done
clear
D)
retrogressive evolution
done
clear
View Answer play_arrow
-
question_answer141) If Darwin's theory of pangenesis shows similarity with theory of inheritance of acquired characters then what shall be correct according to it?
A)
Useful organs become strong and developed while useless organs become extinct. These organs help in struggle for survival
done
clear
B)
Size of organs increase with ageing
done
clear
C)
Development of organs is due to will power
done
clear
D)
There should be some physical basis of inheritance
done
clear
View Answer play_arrow
-
question_answer142) In which of the following animal, post anal tail is found?
A)
Earthworm
done
clear
B)
Lower invertebrate
done
clear
C)
Scorpion
done
clear
D)
Snake
done
clear
View Answer play_arrow
-
question_answer143) In which of the following chlorocruorin pigment is found?
A)
Annelida
done
clear
B)
Echinodermata
done
clear
C)
Insecta
done
clear
D)
Lower Chordata
done
clear
View Answer play_arrow
-
question_answer144) Anemophilous rype of pollination is found in:
A)
Salvia
done
clear
B)
Bottle brush
done
clear
C)
Vallisneria
done
clear
D)
Coconut
done
clear
View Answer play_arrow
-
question_answer145) What is the eye of potato?
A)
Axillary bud
done
clear
B)
Accessory bud
done
clear
C)
Adventitious bud
done
clear
D)
Apical bud
done
clear
View Answer play_arrow
-
question_answer146) Due to discovery of which of the following in 1980's the evolution was termed as RNA world?
A)
m-RNA, t-RNA, r-RNA synthesize proteins
done
clear
B)
In some viruses, RNA is genetic material
done
clear
C)
Some RNAs have enzymatic property
done
clear
D)
RNA is not found in all cells
done
clear
View Answer play_arrow
-
question_answer147) Which pair is wrong?
A)
\[{{C}_{3}}\]?Maize
done
clear
B)
\[{{C}_{4}}\]?Kranz anatomy
done
clear
C)
Calvin cycle?PGA
done
clear
D)
Hatch and Slack cycle?OAA
done
clear
View Answer play_arrow
-
question_answer148) Which breaks dormancy of potato tuber?
A)
Gibberellin
done
clear
B)
IAA
done
clear
C)
ABA
done
clear
D)
Zeatin
done
clear
View Answer play_arrow
-
question_answer149) Hormone responsible for senescence is:
A)
ABA
done
clear
B)
auxin
done
clear
C)
GA
done
clear
D)
cytokinin
done
clear
View Answer play_arrow
-
question_answer150) Which of the following prevents the fall of fruits?
A)
\[G{{A}_{3}}\]
done
clear
B)
NAA
done
clear
C)
Ethylene
done
clear
D)
Zeatin
done
clear
View Answer play_arrow
-
question_answer151) Loading of phloem is related to:
A)
increase of sugar in phloem
done
clear
B)
elongation of phloem cell
done
clear
C)
separation of phloem parenchyma
done
clear
D)
strengthening of phloem fiber
done
clear
View Answer play_arrow
-
question_answer152) Which pigment system is inactivated in red drop?
A)
PS-l and PS-II
done
clear
B)
PS-I
done
clear
C)
PS-II
done
clear
D)
none of these
done
clear
View Answer play_arrow
-
question_answer153) Which plant is LDP?
A)
Tobacco
done
clear
B)
Glycine max
done
clear
C)
Mirabilis jalapa
done
clear
D)
Spinach
done
clear
View Answer play_arrow
-
question_answer154) Photolithotrophs:
A)
obtain energy from radiations and hydrogen from organic compounds
done
clear
B)
obtain energy from radiations and hydrogen from inorganic compounds
done
clear
C)
obtain energy from organic compound
done
clear
D)
obtain energy from inorganic compounds
done
clear
View Answer play_arrow
-
question_answer155) In which of the following plant sunken stomata are found?
A)
Nerium
done
clear
B)
Hydrilla
done
clear
C)
Mango
done
clear
D)
Guava
done
clear
View Answer play_arrow
-
question_answer156) Characteristics feature of human cornea is that:
A)
It is secreted by conjuctiva and glandular tissue
done
clear
B)
It is lacrimal gland which secretes tears
done
clear
C)
blood circulation is absent in cornea
done
clear
D)
In old age it become hard and white layer deposits on it which causes the cataract:
done
clear
View Answer play_arrow
-
question_answer157) Which of these is most infectious disease?
A)
Hepatitis-B
done
clear
B)
AIDS
done
clear
C)
Cough and cold
done
clear
D)
Malaria
done
clear
View Answer play_arrow
-
question_answer158) Interferons are synthesized in response to:
A)
mycoplasma
done
clear
B)
bacteria
done
clear
C)
viruses
done
clear
D)
fungi
done
clear
View Answer play_arrow
-
question_answer159) Cauliflower mosaic virus contains:
A)
ss RNA
done
clear
B)
ds RNA
done
clear
C)
ds DNA
done
clear
D)
ss DNA
done
clear
View Answer play_arrow
-
question_answer160) Reason of lung cancer:
A)
coal mining
done
clear
B)
calcium fluoride
done
clear
C)
cement factory
done
clear
D)
bauxite mining
done
clear
View Answer play_arrow
-
question_answer161) E. coli about to replicate was placed in a medium containing radioactive thymidine for five minutes. Then it was made to replicate in a normal medium. Which of the following observation shall be correct?
A)
Both the strands of DNA will be radioactive
done
clear
B)
One strand radioactive
done
clear
C)
Each strand half radioactive
done
clear
D)
None is radioactive
done
clear
View Answer play_arrow
-
question_answer162) Most abundant organic compound on earth is:
A)
protein
done
clear
B)
cellulose
done
clear
C)
lipids
done
clear
D)
steroids
done
clear
View Answer play_arrow
-
question_answer163) Male XX and female XY sometime occur due to:
A)
deletion
done
clear
B)
transfer of segments in X and Y chromosomes
done
clear
C)
aneuploidy
done
clear
D)
hormonal imbalance
done
clear
View Answer play_arrow
-
question_answer164) Number of Barr bodies in XXXX female:
A)
1
done
clear
B)
2
done
clear
C)
3
done
clear
D)
4
done
clear
View Answer play_arrow
-
question_answer165) Types of RNA polymerase required in nucleus for RNA synthesis:
A)
1
done
clear
B)
2
done
clear
C)
3
done
clear
D)
4
done
clear
View Answer play_arrow
-
question_answer166) What is true for archaebacteria?
A)
All are halophilic
done
clear
B)
All are photosynthetic
done
clear
C)
All are fossils
done
clear
D)
These are oldest living beings
done
clear
View Answer play_arrow
-
question_answer167) Extranuclear inheritance occurs in::
A)
Killer Paramecium
done
clear
B)
Killer Amoeba
done
clear
C)
Euglena
done
clear
D)
Hydra
done
clear
View Answer play_arrow
-
question_answer168) Extranuclear chromosomes occur in:
A)
peroxisome, ribosome
done
clear
B)
chloroplast and mitochondria
done
clear
C)
mitochondria and ribosome
done
clear
D)
chloroplast and lysosome
done
clear
View Answer play_arrow
-
question_answer169) Spoilage of oil can be detected by which fatty acid?
A)
Oleic acid
done
clear
B)
Linolenic acid
done
clear
C)
Linoleic acid
done
clear
D)
Erusic acid
done
clear
View Answer play_arrow
-
question_answer170) When we migrate from dark to light, we fail to see for some time but after a time visibility becomes normal. It is an example of:
A)
accomodation
done
clear
B)
adaptation
done
clear
C)
mutation
done
clear
D)
photoperiodism
done
clear
View Answer play_arrow
-
question_answer171) In plants, inulin and pectin are:
A)
reserve materials
done
clear
B)
wastes
done
clear
C)
excretory material
done
clear
D)
insect-attracting material
done
clear
View Answer play_arrow
-
question_answer172) Gene and cistron words are sometimes used synonymously because:
A)
one cistron contains many genes
done
clear
B)
one gene contains many cistrons
done
clear
C)
one gene contains one cistron
done
clear
D)
one gene contains no cistron
done
clear
View Answer play_arrow
-
question_answer173) Element necessary for the middle lamella
A)
Ca
done
clear
B)
Zn
done
clear
C)
K
done
clear
D)
Cu
done
clear
View Answer play_arrow
-
question_answer174) Cycas has two cotyledons but: is not included in angiosperms because of:
A)
naked ovules
done
clear
B)
stems like monocot
done
clear
C)
circinate ptyxis
done
clear
D)
compound leaves
done
clear
View Answer play_arrow
-
question_answer175) Plant decomposers are:
A)
Monera and fungi
done
clear
B)
Fungi and plants
done
clear
C)
Protista and Animalia
done
clear
D)
Animalia and Monera
done
clear
View Answer play_arrow
-
question_answer176) What is true for cyanobacteria?
A)
Oxygenic with nitrogenase
done
clear
B)
Oxygenic without nitrogenase
done
clear
C)
Non-oxygenic with nitrogenase
done
clear
D)
Non-oxygenic without nitrogenase
done
clear
View Answer play_arrow
-
question_answer177) m-RNA is synthesized on DNA template in which direction?
A)
\[5'\to 3'\]
done
clear
B)
\[3'\to 5'\]
done
clear
C)
Both (a) and (b)
done
clear
D)
Any
done
clear
View Answer play_arrow
-
question_answer178) Cytochrome is:
A)
metallo fiavoprotein
done
clear
B)
Fe containing porphyrin pigment
done
clear
C)
glycoprotein
done
clear
D)
lipid
done
clear
View Answer play_arrow
-
question_answer179) Which of the following are less general in characters as compared to genus?
A)
Species
done
clear
B)
Division
done
clear
C)
Class
done
clear
D)
Family
done
clear
View Answer play_arrow
-
question_answer180) Adhesive pads of fungi penetrate the host with the help of:
A)
mechanical pressure and enzymes
done
clear
B)
hooks and suckers
done
clear
C)
softening by enzymes
done
clear
D)
only by mechanical pressure
done
clear
View Answer play_arrow
-
question_answer181) Microtubules are absent in:
A)
mitochondria
done
clear
B)
flagella
done
clear
C)
spindle fibres
done
clear
D)
centriole
done
clear
View Answer play_arrow
-
question_answer182) Which aquatic fern performs nitrogen fixation?
A)
Azolla
done
clear
B)
Nostoc
done
clear
C)
Salvia
done
clear
D)
Salvinia
done
clear
View Answer play_arrow
-
question_answer183) Roots of which plant contains a red pigment which have affinity for oxygen?
A)
Carrot
done
clear
B)
Soyabean
done
clear
C)
Mustard
done
clear
D)
Radish
done
clear
View Answer play_arrow
-
question_answer184) Triticale is obtained by crossing wheat with:
A)
oat
done
clear
B)
barley
done
clear
C)
maize
done
clear
D)
rye
done
clear
View Answer play_arrow
-
question_answer185) At the time of organogenesis, genes regulate the process at different levels and at different time due to:
A)
promoter
done
clear
B)
regulator
done
clear
C)
intron
done
clear
D)
exon
done
clear
View Answer play_arrow
-
question_answer186) A mutant strain of \[{{T}_{4}}\]-bacteriophage R-ll, fails to lyse die E. coil but when two strains \[R-I{{I}^{x}}\] and \[R-I{{I}^{y}}\] are mixed then they lyse the E. coli. What may be the possible reason?
A)
Bacteriophage transforms in wild
done
clear
B)
It is not mutated
done
clear
C)
Both strains have similar cistrons
done
clear
D)
Both strains have different cistrons
done
clear
View Answer play_arrow
-
question_answer187) Reason of diversity in living beings is:
A)
mutation
done
clear
B)
long term evolutionary change
done
clear
C)
gradual change
done
clear
D)
short term evolutionary change
done
clear
View Answer play_arrow
-
question_answer188) Sickle cell anaemia is due to:
A)
change of amino acid in -chain of haemoglobin
done
clear
B)
change of amino acid in -chain of haemoglobin
done
clear
C)
change of amino add in both and chains of haemoglobin
done
clear
D)
change of amino acid in either or chain of haemoglobin
done
clear
View Answer play_arrow
-
question_answer189) Similarities in organisms with different genotypes indicates:
A)
micro-evolution
done
clear
B)
macro-evolution
done
clear
C)
convergent evolution
done
clear
D)
divergent evolution
done
clear
View Answer play_arrow
-
question_answer190) What is correct for blood group 'O'?
A)
No antigens but both a and b antibodies are present
done
clear
B)
A antigen and b antibody
done
clear
C)
Antigen and antibody both absent
done
clear
D)
A and B antigens and a, b antibodies
done
clear
View Answer play_arrow
-
question_answer191) Which of the following is closest relative of man?
A)
Chimpanzee
done
clear
B)
Gorilla
done
clear
C)
Orangutan
done
clear
D)
Gibbon
done
clear
View Answer play_arrow
-
question_answer192) Which of the following is correct order of the evolutionary history of man?
A)
Peking man, Homo sapiens. Neanderthal man, Cro-Magnon man
done
clear
B)
Peking man, Neanderthal man. Homo sapiens, Cro-Magnon man
done
clear
C)
Peking man, Hedelberg man, Neanderthal man, Cro-Magnon man
done
clear
D)
Peking man, Neanderthal man. Homo sapiens, Hedelberg man
done
clear
View Answer play_arrow
-
question_answer193) Which cells do not form layer and remains structurally separate?
A)
Epithelial cells
done
clear
B)
Muscle cells
done
clear
C)
Nerve cells
done
clear
D)
Gland cells
done
clear
View Answer play_arrow
-
question_answer194) During an injury nasal septum gets damaged. For it's recovery which cartilage is preferred?
A)
Elastic cartilage
done
clear
B)
Hyaline cartilage
done
clear
C)
Calcified cartilage
done
clear
D)
Fibrous cartilage
done
clear
View Answer play_arrow
-
question_answer195) First life on earth was:
A)
cyanobacteria
done
clear
B)
chemoheterotrophs
done
clear
C)
autotrophs
done
clear
D)
photoautotrophs
done
clear
View Answer play_arrow
-
question_answer196) Plasmid is:
A)
fragment of DNA which acts as vector
done
clear
B)
a fragement which joins two genes
done
clear
C)
m-RNA which acts as carrier
done
clear
D)
autotrophic fragment
done
clear
View Answer play_arrow
-
question_answer197) Monoclonal antibodies:
A)
are obtained from a cell and act on one antigen
done
clear
B)
are obtained from a group of cells and act on more than one antigens
done
clear
C)
are obtained from a group of same type of cells and act on single antigen
done
clear
D)
are obtained from a group of same type of cells and act one more than one antigens
done
clear
View Answer play_arrow
-
question_answer198) Which of these do not follow independent assortment?
A)
Genes on non-homologous chromosomes and absence of linkage
done
clear
B)
Genes on homologous chromosomes
done
clear
C)
Linked genes on same chromosomes
done
clear
D)
Unlinked genes on same chromosome
done
clear
View Answer play_arrow
-
question_answer199) In his experiment, Mendel obtained wrinkled pea. The wrinkling was due to deposition of sugar instead of starch. This happened due to the enzyme:
A)
amylase
done
clear
B)
invertase
done
clear
C)
diastase
done
clear
D)
absence of starch-branching enzyme
done
clear
View Answer play_arrow
-
question_answer200) In negative operon:
A)
co-repressor binds with repressor
done
clear
B)
co-repressor does not bind with repressor
done
clear
C)
co-repressor binds with inducer
done
clear
D)
c-AMP has negative effect on lac operon
done
clear
View Answer play_arrow
