question_answer 1) Which activity is not based upon friction?
A)
Writing
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B)
Speaking
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C)
Hearing
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D)
Walking
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question_answer 2) The maximum time period of any simple pendulum on the earth is
A)
180.5 min
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B)
100 min
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C)
90.5 min
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D)
84.5 min
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question_answer 3) The mathematical equation for magnetic field lines of force is
A)
\[\vec{\nabla }.\mathbf{\vec{B}}=0\]
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B)
\[\vec{\nabla }.\mathbf{\vec{B}}\ne 0\]
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C)
\[\vec{\nabla }.\mathbf{\vec{B}}>0\]
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D)
\[\vec{\nabla }.\mathbf{\vec{B}}<0\]
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question_answer 4) The distance at which the magnetic field on axis as compared to the magnetic field at the centre of the coil carrying current I and radius R is \[\frac{1}{8}\]would be
A)
R
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B)
\[\sqrt{2}R\]
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C)
2R
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D)
\[\sqrt{3}R\]
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question_answer 5) The earth has volume V and surface area A, then capacitance would be
A)
\[4\pi {{\varepsilon }_{0}}\frac{A}{V}\]
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B)
\[4\pi {{\varepsilon }_{0}}\frac{V}{A}\]
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C)
\[12\pi {{\varepsilon }_{0}}\frac{V}{A}\]
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D)
\[12\pi {{\varepsilon }_{0}}\frac{A}{V}\]
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question_answer 6) Capacitors are used in electrical circuits where appliances need more
A)
current
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B)
voltage
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C)
watt
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D)
resistance
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question_answer 7) If the circumference of a sphere is 2 m, then capacitance of sphere in water would be
A)
2700 pF
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B)
2760pF
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C)
2780 pF
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D)
2800 pF
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question_answer 8) An electric pump is used to fill an overhead tank of capacity 9 m3 kept at a height of 10 m above the ground. If the pump takes 5 min to fill the tank by consuming 10 kW power the efficiency of the pump should be
A)
60%
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B)
40%
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C)
20%
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D)
30%
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question_answer 9) If we consider solar system consisting of the earth and sun only as of the ideal thermodynamic system. The sun works as source of energy having temperature 6000 K and earth as sink having temperature 300 K, the efficiency of solar system would be on the basis of exchange of radiations
A)
30%
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B)
65%
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C)
75%
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D)
95%
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question_answer 10) Which is the most elastic?
A)
Iron
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B)
Copper
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C)
Quartz
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D)
Wood
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question_answer 11) \[Y=\frac{mgl}{\pi {{r}^{2}}L}\] formula would give Y, if mg is doubled
A)
2Y
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B)
\[\frac{Y}{2}\]
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C)
Y
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D)
zero
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question_answer 12) Ratio between maximum range and square of time of flight in projectile motion is
A)
10 : 49
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B)
49 : 10
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C)
98 : 10
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D)
10 : 98
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question_answer 13) A motor cycle racer takes a round with speed \[20\,m{{s}^{-1}}\] in a curvature of radius of R = 40 m, then the leaning angle of motor cycle for safe turn is \[(g=10\,m{{s}^{-2}})\])
A)
\[20{}^\circ \]
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B)
\[30{}^\circ \]
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C)
\[45{}^\circ \]
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D)
\[60{}^\circ \]
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question_answer 14) Gauss law of gravitation is
A)
\[\oint{\mathbf{\vec{g}}.d\vec{s}=m}\]
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B)
\[\oint{\mathbf{\vec{g}}.d\vec{s}=Gm}\]
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C)
\[\oint{\mathbf{\vec{g}}.d\vec{s}=4G\pi m}\]
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D)
All of the above
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question_answer 15) Photoelectric effect is an example of
A)
elastic collision
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B)
inelastic collision
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C)
two dimensional collision
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D)
oblique collision
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question_answer 16) The molar heat capacity in a process of a diatomic gas, if it does a work of \[\frac{Q}{4}\] when a heat of Q is supplied to it is
A)
\[\frac{2R}{5}\]
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B)
\[\frac{5R}{2}\]
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C)
\[\frac{10R}{3}\]
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D)
\[\frac{6R}{7}\]
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question_answer 17)
As shown in figure, a simple harmonic motion oscillator having identical four springs has time period
A)
\[T=2\pi \sqrt{\frac{m}{4k}}\]
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B)
\[T=2\pi \sqrt{\frac{m}{2k}}\]
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C)
\[T=2\pi \sqrt{\frac{m}{k}}\]
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D)
\[T=2\pi \sqrt{\frac{2m}{k}}\]
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question_answer 18)
A)
c + v
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B)
c - v
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C)
c x v
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D)
c
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question_answer 19) Which graph represents a state of rest for an object?
A)
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B)
done
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C)
done
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D)
done
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question_answer 20)
Direction of frictional force between wheel of the car and road is
A)
upward
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B)
forward
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C)
backward
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D)
downward
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question_answer 21) For different capillaries of radius r, the condition of liquid rise (h) to surface tension is
A)
\[rh=\] constant
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B)
\[\frac{h}{r}=cons\tan t\]
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C)
h + r = constant
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D)
h - r = constant
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question_answer 22)
A child swings sitting and standing inside swing as shown in figure, then period of oscillations have the relation
A)
\[{{(T)}_{sitting}}={{(T)}_{S\tan ding}}\]
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B)
\[{{(T)}_{sitting}}>{{(T)}_{S\tan ding}}\]
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C)
\[{{(T)}_{sitting}}<{{(T)}_{S\tan ding}}\]
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D)
\[2{{(T)}_{sitting}}={{(T)}_{S\tan ding}}\]
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question_answer 23) The ratio between Bohr radii are
A)
1 : 2 : 3
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B)
2 : 4 : 6
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C)
1 : 4 : 9
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D)
1 : 3 : 5
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question_answer 24) If half-life of a radio isotope is 2 s and number of atoms are only 4, then after one half-life remaining (without decay) atoms are probably
A)
1
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B)
2
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C)
3
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D)
All of these
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question_answer 25) \[\frac{h}{2\pi }\]is the dimension of
A)
velocity
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B)
momentum
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C)
energy
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D)
angular momentum
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question_answer 26) Which of the following has high pitch in their sound?
A)
Lion
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B)
Mosquito
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C)
Man
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D)
Woman
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question_answer 27) Geostationary satellite
A)
falls with g towards the earth
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B)
has period of 24h
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C)
has equatorial orbit
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D)
all of the above
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question_answer 28) The potential on the hollow sphere of radius1 m is 1000 V, then potential at \[\frac{1}{4}\] m from the centre of the sphere is
A)
1000 V
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B)
500 V
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C)
250 V
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D)
Zero
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question_answer 29) Electric field (E) and current density (J) have relation
A)
\[E\propto {{J}^{-1}}\]
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B)
\[E\propto J\]
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C)
\[E\propto \frac{1}{{{J}^{2}}}\]
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D)
\[{{E}^{2}}\propto \frac{1}{J}\]
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question_answer 30) Time constant of LC circuit is
A)
\[\frac{1}{2\pi LC}\]
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B)
\[\frac{1}{2\pi {{L}^{2}}{{C}^{2}}}\]
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C)
\[\frac{LC}{2\pi }\]
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D)
\[2\pi \sqrt{LC}\]
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question_answer 31) The value of Planck energy is
A)
\[\frac{nhc}{\lambda }\]
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B)
\[nh\lambda \]
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C)
\[nhc\lambda \]
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D)
\[\frac{nh\lambda }{c}\]
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question_answer 32)
A body A moves with constant velocity on a straight line path tangential to the earths surface. Another body B is thrown vertically upwards, it goes to a height and falls back on earth. A third body C is projected to an angle and follows a parabolic path as shown in figure. The bodies whose angular momentum relative to the centre of the earth is conserved are
A)
B only
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B)
B and C
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C)
A, B, C
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D)
None of these
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question_answer 33) Which unit is not for length?
A)
Parsec
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B)
Light year
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C)
Angstrom
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D)
Nano
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question_answer 34) Which one is angular resolution fundamental quantity?
A)
Length
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B)
Time
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C)
Radian
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D)
Angle
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question_answer 35) Three masses of 2 kg, 4 kg and 4 kg are placed at the three points (1, 0, 0), (1, 1, 0) and (0, 1, 0) respectively. The position vector of its centre of mass is
A)
\[\frac{3}{5}\mathbf{\hat{i}}+\frac{4}{5}\mathbf{\hat{j}}\]
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B)
\[(3\mathbf{\hat{i}}+\mathbf{\hat{j}})\]
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C)
\[\frac{2}{5}\mathbf{\hat{i}}+\frac{4}{5}\mathbf{\hat{j}}\]
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D)
\[\frac{1}{5}\mathbf{\hat{i}}+\frac{3}{5}\mathbf{\hat{j}}\]
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question_answer 36) Let A = light obtained by stimulated emission and B = light obtained by spontaneous emission, then
A)
A is incoherent, B is incoherent
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B)
A is incoherent, B is coherent
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C)
A is coherent, B is coherent
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D)
A is coherent, B is incoherent
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question_answer 37)
Irreducible area abed, in figure is
A)
work
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B)
planck constant
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C)
joule
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D)
charge
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question_answer 38) For which of the following processes is the entropy change zero?
A)
Isobaric
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B)
Isothermal
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C)
Adiabatic
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D)
None of these
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question_answer 39) If absolute zero is \[-273.15\text{ }{}^\circ C\] on Celsius temperature scale, then the absolute zero on the Fahrenheit scale is
A)
\[-273.15\text{ }{}^\circ F\]
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B)
\[-\text{ }453.15\text{ }{}^\circ F\]
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C)
\[-\text{ }459.67\text{ }{}^\circ F\]
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D)
\[-\text{ }491.67\text{ }{}^\circ F\]
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question_answer 40) The average binding energy per nucleon is maximum for the nucleus
A)
\[_{2}H{{e}^{4}}\]
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B)
\[_{8}{{O}^{16}}\]
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C)
\[_{26}F{{e}^{56}}\]
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D)
\[_{92}{{U}^{238}}\]
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question_answer 41) If an\[\alpha \]-particle of mass m, charge q and velocity v is incident on a nucleus of charge Q and mass m, then the distance of closest approach is
A)
\[\frac{Qq}{4\pi {{\varepsilon }_{0}}{{m}^{2}}{{v}^{2}}}\]
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B)
\[\frac{Qq}{2\pi {{\varepsilon }_{0}}m{{v}^{2}}}\]
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C)
\[\frac{Qqm{{v}^{2}}}{2}\]
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D)
\[\frac{Qq}{m{{v}^{2}}}\]
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question_answer 42) The de-Broglie wavelength of a particle with mass m and kinetic energy K is
A)
\[\frac{h}{\sqrt{2mk}}\]
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B)
\[\frac{h}{k}\]
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C)
\[\frac{hk}{2mc}\]
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D)
\[\frac{hc}{2mk}\]
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question_answer 43) Momentum of photon is
A)
\[\frac{hv}{{{c}^{2}}}\]
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B)
\[\frac{hv}{{{c}^{3}}}\]
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C)
\[\frac{hv}{c}\]
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D)
\[\frac{h}{c}\]
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question_answer 44) Following process is known as \[hv\to {{e}^{+}}+{{e}^{-}}\]
A)
Pair production
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B)
Photoelectric effect
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C)
Compton effect
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D)
Zeeman effect
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question_answer 45) Choose the correct statement.
A)
Photoelectric effect can take place from bound electron
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B)
Photoelectric effect can take place from free electron
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C)
Photoelectric effect can take place from bounded or free electron
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D)
Nothing can be said
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question_answer 46) Assertion The formula connecting u, v and \[f\] for a spherical mirror is valid only for mirrors radii of curvature. Reason Laws of reflection are strictly valid for plane surfaces, but not for large spherical surface.
A)
If the Assertion and Reason are true and Reason is the correct explanation of Assertion.
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
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C)
If Assertion is true but Reason is false.
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D)
If both Assertion and Reason are false.
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question_answer 47) Assertion Endoscopy in vovles use of optical fibres to study internal organs. Reason Optical fibres are based on phenomenon of total internal reflection.
A)
If the Assertion and Reason are true and Reason is the correct explanation of Assertion.
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
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C)
If Assertion is true but Reason is false.
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D)
If both Assertion and Reason are false.
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question_answer 48) Assertion A ship floats higher in the water on a high pressure day than on a low pressure day. Reason Floating of ship in the water is not possible because of buoyancy force which is present due to pressure difference.
A)
If the Assertion and Reason are true and Reason is the correct explanation of Assertion.
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
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C)
If Assertion is true but Reason is false.
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D)
If both Assertion and Reason are false.
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question_answer 49) Assertion A proton and an alpha particle having the same kinetic energy are moving in circular paths in a uniform magnetic field. The radii of their circular paths will be equal. Reason Any two charged particles having equal kinetic energies and entering a region of uniform magnetic field \[\mathbf{\vec{B}}\] in a direction perpendicular to \[\mathbf{\vec{B}}\], will describe circular trajectories of equal radii.
A)
If the Assertion and Reason are true and Reason is the correct explanation of Assertion.
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
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C)
If Assertion is true but Reason is false.
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D)
If both Assertion and Reason are false.
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question_answer 50) Assertion The clouds in sky generally appear to be whitish. Reason Diffraction due to clouds is efficient in equal measure at all wavelengths.
A)
If the Assertion and Reason are true and Reason is the correct explanation of Assertion.
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
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C)
If Assertion is true but Reason is false.
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D)
If both Assertion and Reason are false.
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question_answer 51) For a reaction \[2S{{O}_{2}}(s)+{{O}_{2}}(g)\rightleftharpoons 2S{{O}_{3}}(g);\]\[\Delta H=-188.3\,kJ.\] The number of moles of \[S{{O}_{3}}\] formed is increased if
A)
temperature is increased at constant volume
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B)
Inert gas is added to the mixture
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C)
\[{{\text{O}}_{\text{2}}}\]is removed from the mixture
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D)
volume of the reaction flask is decreased
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question_answer 52) For a first order reaction \[\text{A}\xrightarrow{{}}\] Products, the half-life is 100 s. The rate constant of the reaction is
A)
\[6.9\times {{10}^{-2}}{{s}^{-1}}\]
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B)
\[6.93\times {{10}^{-4}}{{s}^{-1}}\]
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C)
\[6.93\times {{10}^{-3\text{ }}}{{s}^{-1}}\]
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D)
\[6.93\times {{10}^{-1\text{ }}}{{s}^{-1}}\]
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question_answer 53) The rate of a gaseous reaction triples when temperature is increased by \[\text{1}{{\text{0}}^{\text{o}}}\text{C}\] from \[\text{2}{{\text{5}}^{\text{o}}}\text{C}\text{.}\]The energy of activation of the reaction(in \[\text{kJ}\,\text{mo}{{\text{l}}^{-1}}\]) will be
A)
40
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B)
70
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C)
83.8
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D)
200
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question_answer 54) The substance which does not show sharp melting point is
A)
\[KCl\]
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B)
glass
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C)
ice
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D)
diamond
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question_answer 55) The total number of Bravais lattice in a crystal is
A)
7
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B)
14
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C)
230
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D)
32
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question_answer 56) Two moles of an ideal gas expand spontaneously into vacuum. The work done is
A)
2 J
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B)
4 J
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C)
zero
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D)
infinity
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question_answer 57) The heat change at constant volume \[({{Q}_{v}})\] is equal to
A)
\[\Delta E\]
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B)
\[\Delta H\]
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C)
RT
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D)
\[\Delta G\]
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question_answer 58) For a gaseous reaction at 300 K. \[\Delta H=\Delta E=-4.98\,kJ,\] assuming that\[R=8.3\,J{{K}^{-1}}\,mo{{l}^{-1}},\,\Delta {{n}_{(g)}}\]is
A)
1
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B)
2
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C)
\[-2\]
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D)
0
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question_answer 59) The pH of a solution is 4. Its \[[{{H}^{+}}]\] is
A)
4 M
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B)
\[{{10}^{4}}\,M\]
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C)
\[{{10}^{-4}}\,M\]
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D)
\[{{10}^{-1}}\,M\]
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question_answer 60) The bonds present in \[{{\text{N}}_{\text{2}}}{{\text{O}}_{\text{5}}}\]are
A)
only convalent
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B)
only ionic
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C)
covalent and coordinate
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D)
covalent and ionic
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question_answer 61) The isotonic solutions have
A)
the same freezing point
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B)
the same boiling point
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C)
the same surface tension
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D)
the same osmotic pressure
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question_answer 62) The radioactive series whose end product is\[_{\text{89}}^{\text{209}}\text{Bi}\]is
A)
Thorium series
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B)
Fourier series
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C)
Actinium series
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D)
Neptunium series
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question_answer 63) \[_{6}^{13}C\]and \[_{\text{7}}^{\text{14}}\text{N}\] are the
A)
isotopes
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B)
isotones
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C)
isobars
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D)
isosters
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question_answer 64) Electron affinity is positive when
A)
\[{{\text{O}}^{-}}\]is formed from O
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B)
\[{{\text{O}}^{2-}}\]is formed from \[{{\text{O}}^{-}}\]
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C)
\[{{\text{O}}^{+}}\]is formed from O
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D)
\[{{\text{O}}^{3-}}\]is formed from \[{{\text{O}}^{-}}\]
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question_answer 65) Which of the following set has all the colored ions?
A)
\[C{{u}^{+}},\,C{{u}^{2+}},\,N{{i}^{2+}}\]
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B)
\[C{{u}^{2+}},C{{O}^{2+}},S{{c}^{3+}}\]
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C)
\[C{{u}^{2+}},F{{e}^{2+}},C{{O}^{2+}}\]
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D)
\[N{{a}^{+}},M{{g}^{2+}},A{{l}^{3+}}\]
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question_answer 66) Which of the following ions has the smallest radius?
A)
\[T{{i}^{2+}}\]
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B)
\[N{{i}^{2+}}\]
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C)
\[P{{t}^{2+}}\]
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D)
\[Z{{r}^{2+}}\]
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question_answer 67) Maximum oxidation state is shown by
A)
\[Os\]
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B)
\[Mn\]
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C)
\[Co\]
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D)
\[Cr\]
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question_answer 68) Maximum magnetic moment is shown by
A)
\[{{d}^{5}}\]
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B)
\[{{d}^{6}}\]
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C)
\[{{d}^{7}}\]
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D)
\[{{d}^{8}}\]
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question_answer 69) Iron obtained from blast furnace is
A)
wrought iron
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B)
cast iron
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C)
pig iron
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D)
steel
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question_answer 70) Which of the following does not contain Mg?
A)
Magnetite
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B)
Absestos
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C)
Magnesite
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D)
Camallite
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question_answer 71) Carborundum is
A)
\[Ca{{C}_{2}}\]
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B)
\[~CaC{{O}_{3}}\]
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C)
\[F{{e}_{3}}C\]
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D)
\[SiC\]
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question_answer 72) Inorganic benzene is
A)
\[{{B}_{2}}{{H}_{6}}\]
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B)
\[{{B}_{3}}{{N}_{3}}{{H}_{6}}\]
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C)
\[{{B}_{3}}{{O}_{3}}{{H}_{6}}\]
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D)
\[{{(B{{H}_{3}})}_{3}}\]
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question_answer 73) The molar concentration of 32 g of oxygen in 10 L is
A)
\[3.2\,mol\,{{L}^{-1}}\]
done
clear
B)
\[3.2\,\,g\,{{L}^{-1}}\]
done
clear
C)
\[1.00\,mol\,{{L}^{-1}}\]
done
clear
D)
\[0.10\,mol\,{{L}^{-1}}\]
done
clear
View Answer play_arrow
question_answer 74) The laughing gas is
A)
nitrous oxide
done
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B)
nitrogen trioxide
done
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C)
nitric oxide
done
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D)
nitrogen penta oxide
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View Answer play_arrow
question_answer 75) Which of the following compound has highest boiling point?
A)
n-hexane
done
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B)
n-pentane
done
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C)
2-methyl butane
done
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D)
2, 2-dimethyl propane
done
clear
View Answer play_arrow
question_answer 76) The reaction, \[C{{H}_{3}}C{{H}_{2}}Cl\xrightarrow[2-CuI]{1-Li}\xrightarrow{C{{H}_{3}}C{{H}_{2}}Cl}\]\[n-\]butane is known as
A)
Wurtz synthesis
done
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B)
Corey-House synthesis
done
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C)
Kolbe synthesis
done
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D)
Friedel-Crafts synthesis
done
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View Answer play_arrow
question_answer 77) The total number of isomers of\[{{\text{C}}_{\text{4}}}{{\text{H}}_{\text{10}}}\text{O}\]will be
A)
4
done
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B)
5
done
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C)
6
done
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D)
7
done
clear
View Answer play_arrow
question_answer 78)
A)
2, 4 butan-di-one
done
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B)
ethanoic anhydride
done
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C)
ethoxyethanone
done
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D)
acetic anhydride
done
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View Answer play_arrow
question_answer 79) Dyes are generally obtained from the substances obtained from
A)
petroleum products
done
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B)
coal-tar
done
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C)
gasoline
done
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D)
water gas
done
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View Answer play_arrow
question_answer 80) \[2{{C}_{6}}{{H}_{5}}CHO\xrightarrow{NaOH}{{C}_{6}}{{H}_{5}}C{{H}_{2}}OH+{{C}_{6}}{{H}_{5}}COONa\]The same reaction can take place with which ofthe following aldehydes ?
A)
\[C{{H}_{3}}CHO\]
done
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B)
\[C{{H}_{3}}C{{H}_{2}}CHO\]
done
clear
C)
\[{{(C{{H}_{3}})}_{3}}CCHO\]
done
clear
D)
\[{{(C{{H}_{3}})}_{2}}CHCHO\]
done
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View Answer play_arrow
question_answer 81) Among the following compounds, the strongest acid is
A)
\[CH\equiv CH\]
done
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B)
\[{{C}_{6}}{{H}_{6}}\]
done
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C)
\[{{C}_{2}}H{{ }_{6}}\]
done
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D)
\[C{{H}_{3}}OH\]
done
clear
View Answer play_arrow
question_answer 82) Which of the following compounds will react with ethanolic KCN?
A)
Ethyl chloride
done
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B)
Acetyl chloride
done
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C)
Benzaldehyde
done
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D)
Chlorobenzene
done
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View Answer play_arrow
question_answer 83) Ethylamine can be prepared by the action of bromine and caustic potash on
A)
Acetamide
done
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B)
Propionamide
done
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C)
Formamide
done
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D)
Methyl cyanide
done
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View Answer play_arrow
question_answer 84) Tonics in general contain
A)
Ether
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B)
Methanol
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C)
Ethanol
done
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D)
Rectified spirit
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View Answer play_arrow
question_answer 85) Acetone will be obtained by the ozonolysis of
A)
1-butene
done
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B)
2-butene
done
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C)
iso-butene
done
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D)
2-butyne
done
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View Answer play_arrow
question_answer 86) Fog is an example of colloidal system of
A)
liquid dispersed in a liquid
done
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B)
liquid dispersed in a gas
done
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C)
gas dispersed in a liquid
done
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D)
solid dispersed in a solid
done
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View Answer play_arrow
question_answer 87) An emulsion is a colloidal solution of one of the following dispersed in another liquid
A)
solid
done
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B)
liquid
done
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C)
gas
done
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D)
medium
done
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View Answer play_arrow
question_answer 88) One Faraday is equal to
A)
96.500 C
done
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B)
9650 C
done
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C)
965.0 C
done
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D)
96500 C
done
clear
View Answer play_arrow
question_answer 89) What is\[{{\text{G}}^{\text{o}}}\]at 298 K for the reaction,\[\text{2VO}_{2}^{+}(aq)+4{{H}^{+}}(aq)+Cd(s)\xrightarrow{{}}2V{{O}^{2+}}(aq)\] \[+2{{H}_{2}}O(l)+C{{d}^{2+}}(aq)\]
A)
\[-271\,kJ\]
done
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B)
\[1.403\,J\]
done
clear
C)
\[-\text{ }135\text{ }kJ\]
done
clear
D)
\[-\text{ }115\text{ }kJ\]
done
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View Answer play_arrow
question_answer 90) Which of the following shows a metal being oxidized?
A)
\[2Na+2{{H}_{2}}O\xrightarrow{{}}2NaOH+{{H}_{2}}\]
done
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B)
\[Cu\xrightarrow{{}}C{{u}^{2+}}+2{{e}^{-}}\]
done
clear
C)
\[C{{u}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Cu\]
done
clear
D)
Both (a) and (b)
done
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View Answer play_arrow
question_answer 91) The site of oxidation in an electrochemical cell is
A)
the anode
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B)
the cathode
done
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C)
the electrode
done
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D)
reference electrode
done
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View Answer play_arrow
question_answer 92) Which metal is used as a coating on steel to prevent corrosion?
A)
Na
done
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B)
Ca
done
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C)
K
done
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D)
Zn
done
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View Answer play_arrow
question_answer 93) Hydrolysis of the salt of a strong acid and weak base will
A)
increase with increase in temperature
done
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B)
decrease with increase in temperature
done
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C)
remains unaffected with change in temperature
done
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D)
remain sun effected with change in concentration of the salt
done
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View Answer play_arrow
question_answer 94) Dissociation constant of a weak acid is decreased by
A)
addition of a strong acid
done
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B)
addition of a salt of the above weak acid
done
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C)
decreasing temperature
done
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D)
dilution of the solution
done
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View Answer play_arrow
question_answer 95) \[\frac{e}{m}\]ratio was determined by
A)
\[\text{J}\,\text{J}\] Thomson
done
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B)
Dalton
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C)
Chadwick
done
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D)
Goldstein
done
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View Answer play_arrow
question_answer 96) Assertion Sodium-2-dodecyl benzenesulphon ate is a biodegradable detergent. Reason Detergents having highly branched chains are biodegradable.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
clear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
View Answer play_arrow
question_answer 97) Assertion On dilution, the equivalent as well as molar conductivity of solution increases. Reason With dilution, the number of current carrying particles per \[c{{m}^{3}}\] increases.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
clear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
View Answer play_arrow
question_answer 98) Assertion 2-butenal lacks enolisable H-atom, \[\alpha \] to carbonyl group, still it has sufficient acidic character. Reason The conjugate base of 2-butenal is stabilized by resonance.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
clear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
View Answer play_arrow
question_answer 99) Assertion When NO reacts with \[\text{FeS}{{\text{O}}_{4}},\]a brown colored complex is formed. Reason In the complex, the coordination number of Fe is +6.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
clear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
View Answer play_arrow
question_answer 100) Assertion In the Lyman series of H-spectra, the maximum wavelength of lines is 121.65 nm. Reason Wavelength is maximum if there is transition from the very next level.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
clear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
View Answer play_arrow
question_answer 101) Who coined the term gene?
A)
Johanssen
done
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B)
Watson
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C)
Morgan
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D)
Williamson
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View Answer play_arrow
question_answer 102) Protein coat of a virus enclosing nucleic acid is called
A)
plasmid
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B)
capsid
done
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C)
vector
done
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D)
genome
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View Answer play_arrow
question_answer 103) Highest number of antibiotics are produced by
A)
Bacillus
done
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B)
Penicillium
done
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C)
Streptomyces
done
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D)
Cephalosporium
done
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View Answer play_arrow
question_answer 104) Which of the following is stained using carmine?
A)
Bacteria
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B)
Diatoms
done
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C)
Chromosomes
done
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D)
Viruses
done
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View Answer play_arrow
question_answer 105) A mature pollen grain of Pinus has
A)
2 cells
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B)
3 cells
done
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C)
4 cells
done
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D)
5 cells
done
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View Answer play_arrow
question_answer 106) Polyploidy can be induced by the application of
A)
auxin
done
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B)
kinetin
done
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C)
colchicine
done
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D)
ethylene
done
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View Answer play_arrow
question_answer 107) Quantasomes are present in
A)
chloroplast
done
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B)
mitochondria
done
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C)
Golgi body
done
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D)
lysosome
done
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View Answer play_arrow
question_answer 108) In mitochondria, enzyme cytochrome oxidase is present in
A)
outer membrane
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B)
perimitochondrial space
done
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C)
inner membrane
done
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D)
matrix
done
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View Answer play_arrow
question_answer 109) Which of the following bio-engineered bacteria is utilized for cleaning of marine oil slicks?
A)
Escherichia coli
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B)
Pseudomonas syringae
done
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C)
Pseudomonas putida
done
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D)
Rhizoctonia solani
done
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View Answer play_arrow
question_answer 110) Green potatoes are toxic due to
A)
phytoalexins
done
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B)
solanin
done
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C)
triazine
done
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D)
hormones
done
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View Answer play_arrow
question_answer 111) Cells obtained from cancerous tumours are known as
A)
hyrbridomas
done
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B)
myelomas
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C)
lymphocytes
done
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D)
monoclonal cells
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View Answer play_arrow
question_answer 112) The plant of Triticum aestivum is
A)
haploid
done
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B)
diploid
done
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C)
tetraploid
done
clear
D)
hexaploid
done
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View Answer play_arrow
question_answer 113) Which of the following is a total root parasite?
A)
Cuscuta
done
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B)
Rafflesia
done
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C)
Santalum
done
clear
D)
Monotrapa
done
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View Answer play_arrow
question_answer 114) Which of the following tissues consist of living cells?
A)
Vessels
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B)
Tracheids
done
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C)
Companion cell
done
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D)
Sclerenchyma
done
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View Answer play_arrow
question_answer 115) Which is a useful product of epidermal origin ?
A)
Saffron
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B)
Cotton fibres
done
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C)
Clove
done
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D)
Jute
done
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View Answer play_arrow
question_answer 116) Fern spores are usually
A)
haploid
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B)
diploid
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C)
triploid
done
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D)
tetraploid
done
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View Answer play_arrow
question_answer 117) When pollen tube enters through micropyle, the process is called
A)
porogamy
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B)
chalazogamy
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C)
mesogamy
done
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D)
apogamy
done
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View Answer play_arrow
question_answer 118) Outer wall of pollen grain is made up of
A)
cellulose
done
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B)
sporopollenin
done
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C)
pectocellulose
done
clear
D)
lignin
done
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View Answer play_arrow
question_answer 119) Nucleotides are formed by
A)
purine, sugar and phosphate
done
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B)
purine, pyrimidine and phosphate
done
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C)
purine, pyrimidine, sugar and phosphate
done
clear
D)
pyrimidine, sugar and phosphate
done
clear
View Answer play_arrow
question_answer 120) DNA replication occurs in
A)
\[{{G}_{1}}\]-phase
done
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B)
S-phase
done
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C)
\[{{G}_{2}}\]-phase
done
clear
D)
M-phase
done
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View Answer play_arrow
question_answer 121) Which of the following plant cells is not surrounded by a cell wall ?
A)
Root hair cell
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B)
Stem hair cell
done
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C)
Gamete cell
done
clear
D)
Bacterial cell
done
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View Answer play_arrow
question_answer 122) Which of the following cell organelles stores hydrolytic enzymes ?
A)
Centriole
done
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B)
Lysosome
done
clear
C)
Chromoplast
done
clear
D)
Chloroplast
done
clear
View Answer play_arrow
question_answer 123) A monocarpic plant is one, which
A)
has only one carpel
done
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B)
flowers once in a life-time
done
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C)
produces only one seed
done
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D)
produces only one fruit
done
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View Answer play_arrow
question_answer 124) AIDS virus contains
A)
RNA with protein
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B)
DNA with protein
done
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C)
DNA without protein
done
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D)
DNA only
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View Answer play_arrow
question_answer 125) Calyptra develops from
A)
venter wall of archegonium
done
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B)
outgrowth of gametophyte
done
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C)
neck wall of archegonium
done
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D)
paraphysis of the archegonial branch
done
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View Answer play_arrow
question_answer 126) Protonema is the stage in the life-cycle of
A)
Cycas
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B)
Funaria
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C)
Selaginella
done
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D)
Mucor
done
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View Answer play_arrow
question_answer 127) A ferm differs from a moss in having
A)
swimming archegonia
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B)
swimming antherozoids
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C)
independent gametophytes
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D)
independent sporophytes
done
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View Answer play_arrow
question_answer 128) Female cone of Pinus is a
A)
modified needles
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B)
modified long shoot
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C)
modified dwarf shoot
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D)
modified scale
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View Answer play_arrow
question_answer 129) Development of an embryo without fertilization is called as
A)
apomixis
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B)
polyembryony
done
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C)
parthenocarpy
done
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D)
parthenogenesis
done
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View Answer play_arrow
question_answer 130) Which of the following floral parts forms pericarp after fertilization ?
A)
Nucellus
done
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B)
Outer integument
done
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C)
Ovary wall
done
clear
D)
Inner integument
done
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View Answer play_arrow
question_answer 131) Prothallus of the fern produces
A)
spores
done
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B)
gametes
done
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C)
Both (a) and (b)
done
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D)
cones
done
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View Answer play_arrow
question_answer 132) Which of the following cell organelles is associated with photorespiration?
A)
Mitochondria
done
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B)
Peroxisome
done
clear
C)
Chloroplast
done
clear
D)
All of these
done
clear
View Answer play_arrow
question_answer 133) The thickness of unit membrane is
A)
\[20\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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B)
\[35\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
clear
C)
\[55\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
clear
D)
\[75\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
clear
View Answer play_arrow
question_answer 134) Chromosomes are arranged along the equator during
A)
prophase
done
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B)
metaphase
done
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C)
anaphase
done
clear
D)
telophase
done
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View Answer play_arrow
question_answer 135) Width of the DNA molecule is
A)
\[15\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
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B)
\[20\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
clear
C)
\[25\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
clear
D)
\[34\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
done
clear
View Answer play_arrow
question_answer 136) In gymnosperms, the ovule is naked because
A)
ovary wall is absent
done
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B)
integuments are absent
done
clear
C)
perianth is absent
done
clear
D)
nucellus is absent
done
clear
View Answer play_arrow
question_answer 137) In Funaria capsule, dispersal of spores takes place through
A)
peristomial teeth
done
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B)
annulus
done
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C)
calyptra
done
clear
D)
operculum
done
clear
View Answer play_arrow
question_answer 138) Crossing over occurs during
A)
leptotene
done
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B)
diplotene
done
clear
C)
pachytene
done
clear
D)
zygotene
done
clear
View Answer play_arrow
question_answer 139) Genes are made up of
A)
histones
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B)
hydrocarbons
done
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C)
polynucleotides
done
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D)
lipoproteins
done
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View Answer play_arrow
question_answer 140) The site of photosynthesis in blue-green algae is
A)
chromatophores
done
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B)
mitochondria
done
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C)
chloroplast
done
clear
D)
root hair
done
clear
View Answer play_arrow
question_answer 141) Viral infection is usually absent in
A)
phloem cells
done
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B)
xylem cells
done
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C)
pith cells
done
clear
D)
apical meristem
done
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View Answer play_arrow
question_answer 142) Clamp connections are found in
A)
Phycomycetes
done
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B)
Ascomycetes
done
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C)
Basidiomycetes
done
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D)
Deuteromycetes
done
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View Answer play_arrow
question_answer 143) Which of the following characters is related with telophase?
A)
Formation of nuclear membrane
done
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B)
Formation of nucleolus
done
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C)
Elongation of chromosome
done
clear
D)
Formation of two daughter nuclei
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View Answer play_arrow
question_answer 144) In case of incomplete dominance, what will be the phenotypic ratio of \[{{F}_{2}}\] generation?
A)
3 : 1
done
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B)
1 : 2 : 1
done
clear
C)
1 : 1 : 1 : 1
done
clear
D)
2 : 2
done
clear
View Answer play_arrow
question_answer 145) Which of the following does not contain DNA?
A)
Mitochondria
done
clear
B)
Chloroplast
done
clear
C)
Peroxysome
done
clear
D)
Nucleus
done
clear
View Answer play_arrow
question_answer 146) Genes exhibiting multiple effects are known as
A)
complementary genes
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B)
pleiotropic genes
done
clear
C)
cistrons
done
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D)
pseudogenes
done
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View Answer play_arrow
question_answer 147) Who coined the term cistron ?
A)
Muller
done
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B)
Benzer
done
clear
C)
Khorana
done
clear
D)
Sutton
done
clear
View Answer play_arrow
question_answer 148) Which of the following is responsible for the origin of lysosome ?
A)
Chloroplast
done
clear
B)
Mitochondria
done
clear
C)
Golgi body
done
clear
D)
Ribosome
done
clear
View Answer play_arrow
question_answer 149) In Selaginella, trabeculae are the modification of
A)
epidermal cells
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B)
cortical cells
done
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C)
endodermal cells
done
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D)
pericycle cells
done
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View Answer play_arrow
question_answer 150) Tonoplast is a membrane, which surrounds
A)
ribosome
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B)
mitochondria
done
clear
C)
vacuole
done
clear
D)
cytoplasm
done
clear
View Answer play_arrow
question_answer 151) Which shows polymorphism ?
A)
Physalia
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B)
Trypanosoma
done
clear
C)
Termite
done
clear
D)
All of these
done
clear
View Answer play_arrow
question_answer 152) Secondary radial symmetry is found in
A)
Cnidaria
done
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B)
Jelly fish
done
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C)
Echinodermata
done
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D)
Hemichordata
done
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View Answer play_arrow
question_answer 153) Basic unit of classification is
A)
genus
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B)
species
done
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C)
order
done
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D)
class
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View Answer play_arrow
question_answer 154) Connecting link between Annelida and Mollusca is
A)
Peripatus
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B)
Lepidosiren
done
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C)
Neopilina
done
clear
D)
Protopterus
done
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View Answer play_arrow
question_answer 155) Select incorrect pair
A)
Porifera - choanocytes
done
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B)
Coelenterata - nematocysts
done
clear
C)
Annelida - segmentation
done
clear
D)
Monera - eukaryote
done
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View Answer play_arrow
question_answer 156) Bilateral symmetry, metameric segmentation, coelom and open circulatory are the features of
A)
Annelida
done
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B)
Arthropoda
done
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C)
Mollusca
done
clear
D)
Echinodermata
done
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View Answer play_arrow
question_answer 157) Ancestor of man who first stood erect was
A)
Australopithecus
done
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B)
Cro-magnon
done
clear
C)
Java-ape man
done
clear
D)
Peking man
done
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View Answer play_arrow
question_answer 158) Core zone, buffer zone and manipulation zone are found in
A)
national park
done
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B)
sanctuary
done
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C)
tiger reserve
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D)
biosphere reserve
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question_answer 159) Which insecticide is more hazardous to human health ?
A)
Rotenone
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B)
Pyrethrum
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C)
DDT
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D)
Humulin
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question_answer 160) Universal donor is
A)
\[O\,R{{h}^{+}}\]
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B)
\[O\,R{{h}^{-}}\]
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C)
\[AB\,R{{h}^{+}}\]
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D)
\[AB\,R{{h}^{-}}\]
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question_answer 161) One of these is not concerned with wild-life conservation
A)
IVF
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B)
IUCN
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C)
WWF
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D)
IBWL
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question_answer 162) Largest tiger population is found in
A)
Sunderban national park
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B)
Corbett national park
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C)
Ranthambhor national park
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D)
Kanha national park
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question_answer 163) Genetic material found in Human Immunodeficiency Virus (HIV) is
A)
double stranded RNA
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B)
single stranded RNA
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C)
double stranded DNA
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D)
single stranded DNA
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question_answer 164) Gigantism and acromegaly are due to
A)
hypothyroidism
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B)
hyperthyroidism
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C)
hypopituitarism
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D)
hyperpituitarism
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question_answer 165) If a child is of O blood group and his father is of B blood group, the genotype of father is
A)
\[{{I}^{o}}{{I}^{o}}\]
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B)
\[{{I}^{A}}\,{{I}^{B}}\]
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C)
\[{{I}^{o}}\,{{I}^{B}}\]
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D)
\[{{I}^{o}}\,{{I}^{A}}\]
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question_answer 166) Spermatogenesis is under the regulatory influence of
A)
ADH
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B)
FSH
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C)
LH
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D)
STH
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question_answer 167) Which of the following can be controlled by using biopesticides?
A)
Insects
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B)
Diseases
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C)
Weeds
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D)
All of these
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question_answer 168) Which hormone is secreted in a woman if pregnancy has occurred ?
A)
Estrogen
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B)
Progesterone
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C)
Luteinizing hormone
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D)
Chorionic gonadotropin
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question_answer 169) Product of biotechnology is
A)
transgenic crops (GM crops)
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B)
humulin
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C)
biofertilizer
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D)
All of the above
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question_answer 170) Phase common in aerobic and anaerobic respiration is
A)
Krebs cycle
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B)
glycolysis
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C)
glycogenolysis
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D)
ETS
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question_answer 171) Oxyntic cells secrete
A)
\[HCl\]
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B)
trypsin
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C)
\[NaOH\]
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D)
pepsinogen
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question_answer 172) Menstruation is due to sudden
A)
reduction of FSH
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B)
increase of LH
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C)
reduction in estrogen and progesterone
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D)
None of the above
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question_answer 173) Correctly matched set of phylum, class and example is
A)
Protozoa-Mastigophora-Entamoeba
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B)
Mollusca-Bivalvia-Pinctata
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C)
Arthropoda-Diplopoda-Scolopendra
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D)
Chordata-Cyclostomata-Phrynosoma
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question_answer 174) Urea synthesis occurs in
A)
kidney
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B)
liver
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C)
brain
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D)
muscles
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question_answer 175) Which is common to kidney and skeleton in mammals ?
A)
Cortex
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B)
Medulla
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C)
Pelvis
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D)
Radius
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question_answer 176) Which is regarded as urinary bladder of embryo ?
A)
Amnion
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B)
Allantois
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C)
Chorion
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D)
Yolk sac
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question_answer 177) Deficiency of vitamin B, 2 causes
A)
cheilosis
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B)
thalassemia
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C)
beri-beri
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D)
pernicious anaemia
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question_answer 178) Blood is a kind of
A)
areolar tissue
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B)
connective tissue
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C)
fluid connective tissue
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D)
reticular connective tissue
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question_answer 179) Which of these is used to control human population ?
A)
Estrogen + progesterone
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B)
IUCD and MTP
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C)
Tubectomy and vasectomy
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D)
All of the above
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question_answer 180) Addiction to alcohol causes
A)
cirrhosis
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B)
epilepsy
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C)
neurosis
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D)
psychosis
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question_answer 181) The most primitive vertebrates are
A)
Ostracoderms
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B)
Cephalochordates
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C)
placoderms
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D)
Cyclostomes
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question_answer 182) Change in the number of body parts is called
A)
continuous variation
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B)
discontinuous variation
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C)
meristic variation
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D)
substantive variation
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question_answer 183) Which has an additional X chromosome ?
A)
Turners syndrome
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B)
Klinefelters syndrome
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C)
Super female
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D)
Downs syndrome
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question_answer 184) Origin of life occurred in
A)
Precambrian
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B)
Coenozoic
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C)
Palaeozoic
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D)
Mesozoic
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question_answer 185) Branch of zoology dealing with the study of fishes is called
A)
Arthrology
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B)
Ichthyology
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C)
Saurology
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D)
Herpetology
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question_answer 186) Theory of continuity of germplasm was propounded by
A)
Mendel
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B)
Lamarck
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C)
Weismann
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D)
Haeckel
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question_answer 187) Who discovered oocysts in the stomach of female Anopheles ?
A)
Ronald Ross
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B)
Charles Lavern
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C)
Golgi
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D)
Lamble
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question_answer 188) Epimysium, perimysium and endomysium are found in
A)
nerve
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B)
blood vessel
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C)
striated muscle
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D)
uterus
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question_answer 189) Endothelium is made up of
A)
squamous cells
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B)
cuboidal cells
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C)
columnar cells
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D)
stratified epithelium
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question_answer 190) Bipolar neurons occur in
A)
vertebrate embryos
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B)
retina of eye
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C)
brain and spinal cord
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D)
skeletal muscles
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question_answer 191) Glissons capsules are found, in which organ of mammals ?
A)
Stomach
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B)
Kidney
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C)
Testis
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D)
Liver
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question_answer 192) Production of glucose from amino acids, fatty acids and glycerol is called
A)
glycogenesis
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B)
gluconeogenesis
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C)
glycogenolysis
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D)
glycolysis
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question_answer 193) Which is called Hamburger shift?
A)
Hydrogen shift
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B)
Bicarbonate shift
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C)
Chloride shift
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D)
Sodium shift
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question_answer 194) Papillary muscles are found in mammalian
A)
auricles
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B)
ventricles
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C)
pinna
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D)
eyes
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question_answer 195) Which foramen is paired in mammalian brain?
A)
Foramen of Luschka
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B)
Foramen of Magendie
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C)
Foramen of Monro
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D)
Inter-ventricular foramen
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question_answer 196) Assertion With few exceptions tropics harbour more species than temperate or polar areas. Reason Species diversity decreases as we move away from the equator towards the poles.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
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B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
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question_answer 197) Assertion Reduction division occurs in anaphase-I. So there is no need of meiosis. Reason Meiosis-II occurs to separate homologous chromosomes.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
clear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
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question_answer 198) Assertion Allelopathy is a form of ammensalism that occurs in plants. Reason Association of rooting plants with fungal hyphae, is an important example of ammensalism.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
clear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
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question_answer 199) Assertion Generally, a woman do not conceive during lactation period. Reason The hormone prolactin initates and maintain lactation in a woman.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
clear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
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question_answer 200) Assertion The imbalance in concentration of sodium and potassium ions and proteins generates the resting potential. Reason To maintain unequal distribution of sodium and potassium, neurons use electrical energy.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
done
clear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
done
clear
C)
If Assertion is true but Reason is false.
done
clear
D)
If both Assertion and Reason are false.
done
clear
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In figure, one car is at rest and velocity of light from head light is c, then velocity of light from head light for the moving car at velocity v, would be
