n identical light bulbs, each designed to draw P power from a certain voltage supply, are joined in series across that supply. The total power which they will draw is
A)
\[nP\]
done
clear
B)
\[P\]
done
clear
C)
\[\frac{P}{n}\]
done
clear
D)
\[\frac{P}{{{n}^{2}}}\]
done
clear
View Answer play_arrow
A thin semi-circular conducting ring of radius R is falling with its plane vertical in a horizontal magnetic induction\[\vec{B}.\]At the position MNQ, the speed of the ring is \[\upsilon .\]The potential difference developed across the ring is
A)
0
done
clear
B)
\[\frac{1}{2}B\upsilon \pi {{R}^{2}},\] and M is at a higher potential
done
clear
C)
\[\pi RB\upsilon ,\]and Q is at a higher potential
done
clear
D)
\[2RB\upsilon ,\] and Q is at a higher potential
done
clear
View Answer play_arrow
A particle with a specific charge s is fired with a speed\[\upsilon \]towards a wall at a distance d, perpendicular to the wall. What minimum magnetic field must exist in this region for the particle not to hit the wall?
A)
\[\frac{\upsilon }{sd}\]
done
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B)
\[\frac{2\upsilon }{sd}\]
done
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C)
\[\frac{\upsilon }{2sd}\]
done
clear
D)
\[\frac{\upsilon }{4sd}\]
done
clear
View Answer play_arrow
The activity of a sample of radioactive material is \[{{A}_{1}}\]at time \[{{t}_{1}}\]and \[{{A}_{2}}\]at time\[{{t}_{2}}({{t}_{2}}>{{t}_{1}}).\]Its mean life is T.
A)
\[{{A}_{1}}{{t}_{1}}={{A}_{2}}{{t}_{2}}\]
done
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B)
\[\frac{{{A}_{1}}-{{A}_{2}}}{{{t}_{2}}-{{t}_{1}}}=\text{constant}\]
done
clear
C)
\[{{A}_{2}}={{A}_{1}}{{e}^{\left( \frac{{{t}_{1}}-{{t}_{2}}}{T} \right)}}\]
done
clear
D)
\[{{A}_{2}}={{A}_{1}}{{e}^{\left( \frac{{{t}_{1}}}{T{{t}_{2}}} \right)}}\]
done
clear
View Answer play_arrow
Equations of two progressive waves at a certain point in a medium 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 formed by the superposition of these two waves is 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
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C)
\[\frac{\pi }{6}\]
done
clear
D)
\[\frac{\pi }{4}\]
done
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View Answer play_arrow
In the figure the intensity of waves arriving at D from two coherent sources\[{{s}_{1}}\]and \[{{s}_{2}}\] is \[{{I}_{0}}.\]The wavelength of the wave is \[\lambda =4\,m.\]Resultant intensity at D will be
A)
\[4{{I}_{0}}\]
done
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B)
\[{{I}_{0}}\]
done
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C)
\[2{{I}_{0}}\]
done
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D)
0
done
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View Answer play_arrow
Which of the following relation is correct.
A)
\[\sqrt{{{\varepsilon }_{0}}{{E}_{0}}}=\sqrt{{{\mu }_{0}}{{B}_{0}}}\]
done
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B)
\[\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}}{{E}_{0}}={{B}_{0}}\]
done
clear
C)
\[{{E}_{0}}=\sqrt{{{\mu }_{0}}{{\varepsilon }_{0}}{{B}_{0}}}\]
done
clear
D)
\[\sqrt{{{\mu }_{0}}{{E}_{0}}}=\sqrt{{{\varepsilon }_{0}}}{{B}_{0}}\]
done
clear
View Answer play_arrow
A piano convex lens fits exactly into a piano concave lens. Their plane surfaces are parallel to each other. If the lenses are made of different materials of refractive indices\[{{\mu }_{1}}\] and \[{{\mu }_{2}}\] and R is the radius of curvature of the curved surface of the lenses, then focal length of the combination is
A)
\[\frac{R}{2({{\mu }_{1}}+{{\mu }_{2}})}\]
done
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B)
\[\frac{R}{2({{\mu }_{1}}-{{\mu }_{2}})}\]
done
clear
C)
\[\frac{R}{({{\mu }_{1}}-{{\mu }_{2}})}\]
done
clear
D)
\[\frac{2R}{({{\mu }_{2}}-{{\mu }_{1}})}\]
done
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View Answer play_arrow
In Young's double slit experiment, the two equally bright slits are coherent, but of phase difference \[\pi /3.\]If maximum intensity on the screen is \[{{I}_{o}},\]the intensity at the point on the screen equidistant from the slits is
A)
\[{{I}_{o}}\]
done
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B)
\[\frac{{{I}_{o}}}{2}\]
done
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C)
\[\frac{{{I}_{o}}}{4}\]
done
clear
D)
\[\frac{3{{I}_{o}}}{4}\]
done
clear
View Answer play_arrow
Light described at a place by the equation \[E=100V\,{{m}^{-1}}[\sin (6\times {{10}^{15}}t)\]\[+\sin (8\times {{10}^{15}})]\]falls on a metal surface of work function 2 eV The maximum KE of the photoelectronsis: (Use\[h=6.6\times {{10}^{-34}}J-s\]
A)
2.25 eV
done
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B)
3.25 eV
done
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C)
4.24 eV
done
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D)
5.25 eV
done
clear
View Answer play_arrow
In the figure, a series LCR circuit is connected to a variable frequency 200 V source \[L=5\,H,C=80\,\mu F\]and \[R=40\,\Omega .\]Then the source frequency which drive the circuit at resonance is
A)
25 Hz
done
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B)
\[\frac{25}{\pi }HZ\]
done
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C)
\[50\,Hz\]
done
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D)
\[\frac{50}{\pi }\,Hz\]
done
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View Answer play_arrow
The binding energy of two nuclei\[{{P}^{n}}\] and \[{{Q}^{2n}}\]are \[x-\]joule and \[y-\]joule, respectively. Then the energy released in the reaction \[{{P}^{n}}+{{P}^{n}}={{Q}^{2n}}\]will be
A)
\[2x+y\]
done
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B)
\[y-2x\]
done
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C)
\[xy\]
done
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D)
\[x+y\]
done
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View Answer play_arrow
An ideal monatomic gas undergoes a cyclic process ABCA as shown in the figure. The ratio of heat absorbed during AB to the work done on the gas during BC is
A)
\[\frac{5}{2\,\text{in}\,2}\]
done
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B)
\[\frac{5}{3}\]
done
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C)
\[\frac{5}{3\,\text{in}\,2}\]
done
clear
D)
\[\frac{5}{6}\]
done
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View Answer play_arrow
Two identical rigid containers joined by a small pipe initially contain the same gas at pressure \[{{P}_{o}}\]and absolute temperature \[{{T}_{o}}\]One container is now maintained at the same temperature while the other is heated to \[2{{T}_{o}}.\]The common pressure of the gases will be
A)
\[\frac{3}{2}{{P}_{0}}\]
done
clear
B)
\[\frac{4}{3}{{P}_{0}}\]
done
clear
C)
\[\frac{5}{3}{{P}_{0}}\]
done
clear
D)
\[2{{P}_{0}}\]
done
clear
View Answer play_arrow
An ideal gas undergoes cyclic process ABC as shown in the temperature-volume graph. For the process, the ratio \[{{P}_{B}}/{{P}_{A}}\]equals (\[{{P}_{B}},{{P}_{A}}\]being pressure at B and A, respectively)
A)
1
done
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B)
\[\frac{1}{2}\]
done
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C)
\[\frac{1}{4}\]
done
clear
D)
2
done
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View Answer play_arrow
The three vessels shown in the figure, have same base area. Equal volumes of a liquid are poured in the three vessels. The force on the base will be
A)
Maximum in Vessel A
done
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B)
Maximum in Vessel B
done
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C)
Maximum in Vessel C
done
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D)
Equal in all the vessels
done
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View Answer play_arrow
A body having volume V and density p is attached to the bottom of a container as shown in the figure. Density of the liquid is d \[d(>\rho ).\] The container has a constant upward acceleration a. Tension in the string is
A)
\[V[dg-\rho (g+a)]\]
done
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B)
\[V(g+a)(d-\rho )\]
done
clear
C)
\[V(d-\rho )g\]
done
clear
D)
None of these
done
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View Answer play_arrow
A point object is placed on the optic axis of a convex lens of focal length\[f\]at a distance of \[2f\]to the left of it. The diameter of the lens is d. An eye is placed at a distance of \[3f\] to the right of the lens and a distance h below the optic axis. The maximum value of h to see the image is
A)
\[\frac{d}{2}\]
done
clear
B)
\[d\]
done
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C)
\[\frac{d}{4}\]
done
clear
D)
\[\frac{d}{3}\]
done
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View Answer play_arrow
Ultraviolet light of wavelength 280 nm is used in an experiment on photoelectric effect with lithium of work function 2.5 eV The maximum and minimum ICE of the photoelectrons, if anode voltage is 3 V, is: \[(hc=1240\,eV\,nm)\]
A)
2.5 eV, 0
done
clear
B)
4.9 eV, 3eV
done
clear
C)
5.9 eV, 0.5 eV
done
clear
D)
5.5 eV, 3eV
done
clear
View Answer play_arrow
The displacement (in meters) of a body varies with time t (in seconds as\[y=(2/3){{t}^{2}}+16+2.\] How long does the body take to come to rest?
A)
8 seconds
done
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B)
10 seconds
done
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C)
12 seconds
done
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D)
16 seconds
done
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View Answer play_arrow
A solid sphere is rotating in free space. If the radius of the sphere is increased keeping mass same, which one of the following will not be affected?
A)
Moment of inertia
done
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B)
Angular momentum
done
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C)
Angular velocity
done
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D)
Rotational kinetic energy
done
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View Answer play_arrow
A ring starts from rest and acquires an angular speed of 10 rad/s in 2 s. The mass of the ring is 500 g and its radius is 20 cm. The torque on the ring is
A)
0.02 Nm
done
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B)
0.20 Nm
done
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C)
0.10 Nm
done
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D)
0.01 Nm
done
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View Answer play_arrow
If the gravitational force of attraction between any two bodies were to vary as instead of \[1/{{r}^{3}},\]instead of \[1/{{r}^{2}}.\] The period of revolution of a planet round the sun would vary as:
A)
\[\sqrt{r}\]
done
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B)
\[r\]
done
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C)
\[{{r}^{\frac{3}{2}}}\]
done
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D)
\[{{r}^{2}}\]
done
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View Answer play_arrow
The displacement\[x\](in centimeters) of an oscillating particle varies with time t (in seconds) as\[x=2\cos (0.5\pi t+\pi /3).\]The magnitude of the maximum acceleration of the particle in \[c{{m}^{-2}}\]is
A)
\[\frac{\pi }{2}\]
done
clear
B)
\[\frac{\pi }{4}\]
done
clear
C)
\[\frac{{{\pi }^{2}}}{2}\]
done
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D)
\[\frac{{{\pi }^{2}}}{4}\]
done
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View Answer play_arrow
An ambulance blowing a siren of frequency 700 Hz is travelling slowly towards a vertical reflecting wall with a speed of \[2\text{ }m{{s}^{-1}}.\] What is the reflected frequency as heard by the driver and the number of beats produced per second?(Velocity of sound\[=350\,m{{s}^{-1}}\])
A)
708 Hz, 8
done
clear
B)
692 Hz, 8
done
clear
C)
700 Hz, 0
done
clear
D)
696 Hz, 4
done
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View Answer play_arrow
The electric potential V (in volt) varies with x (in meter) according the relation\[V=5+4{{x}^{2}}.\] The force experienced by a negative charge of \[2\times {{10}^{-6}}C\]located at \[x=0.5\,m\]is:
A)
\[2\times {{10}^{-6}}N\]
done
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B)
\[4\times {{10}^{-6}}N\]
done
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C)
\[6\times {{10}^{-6}}N\]
done
clear
D)
\[8\times {{10}^{-6}}N\]
done
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View Answer play_arrow
In the circuit shown the cells are ideal and of equal emfs, the capacitance of the capacitor is C and the resistance of the resistor is R. X is first joined to Y and then to Z. After a long time, the total heat produced in the resistor will be
A)
equal to the energy finally stored in the capacitor.
done
clear
B)
half of the energy finally stored in the capacitor.
done
clear
C)
twice the energy finally stored in the capacitor.
done
clear
D)
4 times the energy finally stored in the capacitor.
done
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View Answer play_arrow
In an ac generator, the number of turns in the coil is 2000 and the area of the coil is \[0.1\text{ }{{m}^{2}}.\] The coil is rotated at an angular frequency of \[200\,\text{rad}\,{{\text{s}}^{-1}}\] in a magnetic field of 0.2 T. What is the peak value of the induced emf?
A)
1000 V
done
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B)
2000V
done
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C)
4000V
done
clear
D)
8000V
done
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View Answer play_arrow
In an ac circuit the potential difference V and current\[I\]are given respectively by \[V=100\sin (100\,t)\]volt and\[I=100\sin (100t+\pi /3)\,mA.\]The power dissipated in the circuit will be
A)
\[~{{10}^{4}}W\]
done
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B)
10 W
done
clear
C)
2.5 W
done
clear
D)
5 W
done
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View Answer play_arrow
The angle of a prism is A and one of its refracting surfaces is silvered. Light rays falling at an angle of incidence 2A on the first surface return back through the same path after suffering reflection at the second (silvered) surface. The refractive of the material of the prism is
A)
2 sin A
done
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B)
\[2\cos A\]
done
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C)
\[\left( \frac{1}{2} \right)\cos A\]
done
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D)
\[\tan A\]
done
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View Answer play_arrow
A particle is projected from the ground at an angle of \[\theta \] with the horizontal with an initial speed of u. Time after which velocity vector of the projectile is perpendicular to the initial velocity is
A)
\[\frac{u}{(g\sin \theta )}\]
done
clear
B)
\[\frac{u}{(gcos\theta )}\]
done
clear
C)
\[\frac{2u}{(g\sin \theta )}\]
done
clear
D)
\[2u\,\tan \theta \]
done
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View Answer play_arrow
A block of mass 15 kg is resting on a rough inclined plane as shown in the figure. The block is tied by a horizontal sting, which has a tension of 50 N, The coefficient of friction between the surfaces of contact is \[(g=10\,m/{{s}^{2}})\]
A)
\[\frac{1}{2}\]
done
clear
B)
\[\frac{3}{4}\]
done
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C)
\[\frac{2}{3}\]
done
clear
D)
\[\frac{1}{4}\]
done
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View Answer play_arrow
A particle is acted upon by a force of constant magnitude, which is always perpendicular to the velocity of the particle, the motion of the particle takes plane in a plane. It follows that
A)
its velocity is constant.
done
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B)
its acceleration is constant.
done
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C)
its kinetic energy is constant.
done
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D)
it moves in a straight line.
done
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View Answer play_arrow
Consider elastic collision of a particle of mass m moving with a velocity u with another particle of the same mass at rest. After the collision the projectile and the struck particle move in directions making angles \[{{\theta }_{1}}\]and \[{{0}_{2}},\]respectively with the initial direction of motion. The sum of the angles \[{{\theta }_{1}}+{{\theta }_{2}},\] is
A)
\[45{}^\circ \]
done
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B)
\[90{}^\circ \]
done
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C)
\[135{}^\circ \]
done
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D)
\[180{}^\circ \]
done
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View Answer play_arrow
A solid cylinder of mass M and radius R rolls down an inclined plane without slipping. The speed of its center of mass when it reaches the bottom is (h is the height of inclined plane):
A)
\[\sqrt{2gh}\]
done
clear
B)
\[\sqrt{\frac{4}{3}gh}\]
done
clear
C)
\[\sqrt{\frac{3}{4}gh}\]
done
clear
D)
\[\sqrt{\frac{4g}{h}}\]
done
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View Answer play_arrow
A vertical meter stick of mass 400 gm is pivoted at the top and is then displaced through an angle \[60{}^\circ \]. The increase in its potential energy is
A)
2 J
done
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B)
\[3\,J\]
done
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C)
\[0\,J\]
done
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D)
\[1\,J\]
done
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View Answer play_arrow
A homogeneous cylinder of mass M and radius R is pulled on a horizontal plane by a horizontal force p acting through its mass center. Assuming rolling without slipping the angular acceleration of the cylinder is
A)
\[\frac{3F}{2MR}\]
done
clear
B)
\[\frac{2F}{3MR}\]
done
clear
C)
\[\frac{F}{2MR}\]
done
clear
D)
\[\frac{3F}{4MR}\]
done
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View Answer play_arrow
A radioactive substance is being produced at a constant rate 200 nuclei/s. The decay constant of the substance is \[1{{s}^{-1}}.\]After what time, the number of radioactive nuclei will become 100? Initially there are no nuclei present.
A)
\[1\,s\]
done
clear
B)
\[\frac{1}{\ell n\,2}s\]
done
clear
C)
\[(\ell n\,2)s\]
done
clear
D)
2 s
done
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View Answer play_arrow
Which of the following figure represents the variation of particle momentum and associated de-Broglie wavelength?
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
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View Answer play_arrow
The velocity of the most energetic electron emitted from a metallic surface is doubled when the frequency v of incident radiation is doubled. The work function of this metal is
A)
\[\frac{2}{3}hv\]
done
clear
B)
\[\frac{hv}{2}\]
done
clear
C)
\[\frac{hv}{3}\]
done
clear
D)
0
done
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View Answer play_arrow
When a capillary tube of radius r is immersed in a liquid of density \[\rho ,\]the liquid rises to a height h in it. If m is the mass of the liquid in the capillary tube, the potential energy of this mass of the liquid in the tube is
A)
\[\frac{mgh}{4}\]
done
clear
B)
\[\frac{mgh}{2}\]
done
clear
C)
\[mgh\]
done
clear
D)
\[2mgh\]
done
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View Answer play_arrow
A liquid stands at the same level I arms A and B of a U-tube. If the U-tube is given a constant acceleration \[a(<g)\]towards the right as shown in the figure, the level of liquid in limb A rises to a height h above the level in limb B. If the length of the horizontal part of the U-tube is L, the value of h is given by
A)
\[\frac{La}{g}\]
done
clear
B)
\[\frac{Lg}{a}\]
done
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C)
\[L\left( 1+\frac{a}{g} \right)\]
done
clear
D)
\[L\left( 1-\frac{a}{g} \right)\]
done
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View Answer play_arrow
In the circuit shown in the figure the cells \[{{E}_{1}}\]and \[{{E}_{2}}\]have emfs. of 4 V and 8 V and internal resistance\[0.5\Omega \]and\[1\Omega ,\]respectively, Then the pd. Across \[{{E}_{1}}\]and\[{{E}_{2}}\] will be:
A)
\[4.25\,V;\,4.25\,V\]
done
clear
B)
\[3.75\,V;\,3.75\,V\]
done
clear
C)
\[4.25\,V;\,7.5\,V\]
done
clear
D)
\[3.75\,V;\,7.5\,V\]
done
clear
View Answer play_arrow
In the given figure when galvanomete shows on deflection. Current flowing through 50, resistance will be:
A)
0.5 A
done
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B)
0.6 A
done
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C)
1.5 A
done
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D)
2.0 A
done
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View Answer play_arrow
Three waves A, B, and C of frequencies 1600 kHz, 5 MHz, and 60 MHz, respectively are to be transmitted from one place to another. Which of the following is the most appropriate mode of communication:
A)
A is transmitted via space wave while B and C are transmitted via sky wave.
done
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B)
A is transmitted via ground wave, B via sky wave and C via space wave.
done
clear
C)
B and C are transmitted via ground wave while A is transmitted via sky wave.
done
clear
D)
B is transmitted via ground wave while A and C are transmitted via space wave.
done
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View Answer play_arrow
Which of the following is an insert gas?
A)
\[{{N}_{2}}\]
done
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B)
\[{{O}_{2}}\]
done
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C)
\[{{H}_{2}}\]
done
clear
D)
Argon
done
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View Answer play_arrow
If 0.1 M of a weak acid is taken and its percentage of degree of ionization is 1.34%, then its ionization constant will be
A)
\[0.182\times {{10}^{-5}}\]
done
clear
B)
\[1.79\times {{10}^{-5}}\]
done
clear
C)
\[0.8\times {{10}^{-5}}\]
done
clear
D)
None of these
done
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View Answer play_arrow
If a substance with half-half 3 days is taken at other place in 12 days, then what amount of substance is left now?
A)
1/8
done
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B)
1/4
done
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C)
1/16
done
clear
D)
1/2
done
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View Answer play_arrow
To prepare a solution with concentration of 0.03 g/mL of \[AgN{{O}_{3}},\]what amount of \[AgN{{O}_{3}}\]should be added in 60 mL of solution?
A)
1.8 g
done
clear
B)
0.18 g
done
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C)
0.8 g
done
clear
D)
0.09 g
done
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View Answer play_arrow
How will you separate a solution (miscible) of benzene\[+\text{ }CHC{{l}_{3}}?\]
A)
Filtration
done
clear
B)
Sublimation
done
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C)
Distillation
done
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D)
Crystallization
done
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View Answer play_arrow
When alcohol reacts with concentrated \[{{H}_{2}}S{{O}_{4}},\]the intermediate compound formed is
A)
Carbonium ion
done
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B)
Alkyl hydrogen sulphate
done
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C)
Alkoxy ion
done
clear
D)
None of these
done
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View Answer play_arrow
According to the law of mass action rate of a chemical reaction is proportional to
A)
Concentration of reactants
done
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B)
Molar concentration of reactants
done
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C)
Molar concentration of products
done
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D)
Concentration of products
done
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View Answer play_arrow
In Hall's process the main reagent is mixed with
A)
\[~A1{{F}_{3}}\]
done
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B)
\[N{{a}_{3}}Al{{F}_{6}}\]
done
clear
C)
\[NaF\]
done
clear
D)
None of these
done
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View Answer play_arrow
In the electrolysis of dilute \[{{H}_{2}}S{{O}_{4}}\]what is liberated at anode?
A)
\[S{{O}_{2}}\]
done
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B)
\[{{H}_{2}}\]
done
clear
C)
\[S{{O}_{4}}^{2-}\]
done
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D)
\[{{O}_{2}}\]
done
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View Answer play_arrow
A gas can be liquefied
A)
At its critical temperature
done
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B)
Above its critical temperature
done
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C)
Below its critical temperature
done
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D)
At any temperature
done
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View Answer play_arrow
Which of the following is hypnotic?
A)
Metaldehyde
done
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B)
Paraldehyde
done
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C)
Acetaldehyde
done
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D)
None of these
done
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View Answer play_arrow
By which of the following process permanent hardness of water can be removed?
A)
Washing soda
done
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B)
Soda lime
done
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C)
Sodium chloride
done
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D)
Sodium bicarbonate
done
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View Answer play_arrow
Vinegar obtained from sugarcane has
A)
\[C{{H}_{3}}COOH\]
done
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B)
\[C{{H}_{3}}C{{H}_{2}}COOH\]
done
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C)
\[HCOOH\]
done
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D)
\[{{C}_{6}}{{H}_{5}}COOH\]
done
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View Answer play_arrow
What is the packet of energy called?
A)
Proton
done
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B)
Photon
done
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C)
Positron
done
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D)
Electron
done
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View Answer play_arrow
When an acid cell is charged, then
A)
Voltage of cell increases
done
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B)
Electrolyte of cell dilutes
done
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C)
Resistance of cell increases
done
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D)
None of these
done
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View Answer play_arrow
\[NaOH\] is prepared by the method
A)
Solvay process
done
clear
B)
Castner cell
done
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C)
Down cell
done
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D)
Castner-Kellner cell
done
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View Answer play_arrow
When toluene is treated with \[KMn{{O}_{4}}\]what is produced?
A)
Benzene
done
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B)
Benzaldehyde
done
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C)
Chlorobenzene
done
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D)
Benzoic acid
done
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View Answer play_arrow
Solder is an alloy of
A)
90% copper, 10% tin
done
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B)
30% lead, 70% tin
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C)
70% lead, 30% tin
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D)
80% lead, 20% tin
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View Answer play_arrow
Carbolic acid is
A)
\[{{C}_{6}}{{H}_{6}}\]
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B)
\[{{C}_{6}}{{H}_{5}}CHO\]
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C)
\[{{C}_{6}}{{H}_{5}}COOH\]
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D)
\[{{C}_{6}}{{H}_{5}}OH\]
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View Answer play_arrow
Alcohols are isomeric with
A)
Esters
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B)
Ethers
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C)
Acids
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D)
Aldehydes
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The group linkage present in fats is
A)
Peptide linkage
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B)
Ester linkage
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C)
Glycosidic linkage
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D)
None of these
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The group present in waxes are
A)
Acid group
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B)
Ester group
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C)
Alcoholic group
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D)
Ether group
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View Answer play_arrow
Which of the following is liquid at room temperature?
A)
\[C{{H}_{3}}I-66{{\,}^{o}}C,42{{\,}^{o}}C\]
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B)
\[C{{H}_{3}}F-115{{\,}^{o}}C,78{{\,}^{o}}C\]
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C)
\[{{C}_{2}}{{H}_{5}}Cl-94{{\,}^{o}}C,3{{\,}^{o}}C\]
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D)
\[{{C}_{2}}{{H}_{5}}Cl-139{{\,}^{o}}C,12{{\,}^{o}}C\]
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Which gas is liberated when\[A{{l}_{4}}C{{L}_{3}}\]is hydrolyzed?
A)
\[C{{H}_{4}}\]
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B)
\[C{{O}_{2}}\]
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C)
\[{{C}_{2}}{{H}_{2}}\]
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D)
\[{{C}_{2}}{{H}_{6}}\]
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The only alcohol that can be prepared by the indirect hydration of alkene is
A)
Ethyl alcohol
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B)
Propyl alcohol
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C)
Isobutyl alcohol
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D)
Methyl alcohol
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View Answer play_arrow
Baking powder is
A)
\[NaHC{{O}_{3}}\]
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B)
\[N{{a}_{2}}C{{O}_{3}}\]
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C)
\[NaHC{{O}_{3}}.6{{H}_{2}}O\]
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D)
\[N{{a}_{2}}C{{O}_{3}}.10{{H}_{2}}O\]
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View Answer play_arrow
When washing soda is heated
A)
\[C{{O}_{2}}\] is released
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B)
Water vapor is released
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C)
\[C{{O}_{2}}\] is released
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D)
\[CO+C{{O}_{2}}\]is released
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Which of the following attacks glass
A)
\[HCl\]
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B)
\[HBr\]
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C)
\[HI\]
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D)
\[HF\]
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View Answer play_arrow
A colorless gas with the smell of rotten fish is
A)
\[S{{O}_{2}}\]
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B)
\[P{{H}_{3}}\]
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C)
\[{{H}_{2}}S\]
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D)
None of these
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View Answer play_arrow
Salicylic acid is prepared form phenol by
A)
Reimer-Tiemann reaction
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B)
Kolbe electrolysis reaction
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C)
Kolbe's reaction
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D)
None of the above
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View Answer play_arrow
Lucas test is done for
A)
Acids
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B)
Alcohols
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C)
Alkyl halides
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D)
Aldehydes
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View Answer play_arrow
Hydrogen can be fused to form helium at
A)
High temperature and high pressure
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B)
High temperature and low pressure
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C)
Low temperature and high pressure
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D)
Low temperature and low pressure
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View Answer play_arrow
When\[C{{O}_{2}}\]is bubbled through a solution of barium peroxide in water
A)
Carbonic acid is formed
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B)
\[{{O}_{2}}\]is released
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C)
\[{{H}_{2}}{{O}_{2}}\] is formed
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D)
No reaction occurs
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View Answer play_arrow
The most important ore of tin is
A)
Cassiterite
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B)
Cerussite
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C)
Cryolite
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D)
None of these
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Heating of ore in presence of air to remove sulphur impurities is called
A)
Smelting
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B)
Roasting
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C)
Calcination
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D)
None of these
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View Answer play_arrow
\[CaC{{O}_{3}}CaO+C{{O}_{2}}\]reaction in a line goes to completion because
A)
Backward reaction is very low
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B)
\[CaO\] does not react to \[C{{O}_{2}}\]to give\[CaC{{O}_{3}}\]
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C)
\[C{{O}_{2}}\]formed escapes out
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D)
None of the above
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View Answer play_arrow
If 30 mL of \[{{H}_{2}}\]and 20 mL of\[{{O}_{2}}\]reacts to from water, then what is left at the end of the reaction?
A)
10 mL of\[{{O}_{2}}\]
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B)
10 mL of\[{{H}_{2}}\]
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C)
5 mL of\[{{H}_{2}}\]
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D)
5 mL of \[{{O}_{2}}\]
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View Answer play_arrow
Which of the following is a highly corrosive salt?
A)
\[FeC{{l}_{2}}\]
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B)
\[HgC{{l}_{2}}\]
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C)
\[PbC{{l}_{2}}\]
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D)
\[H{{g}_{2}}C{{l}_{2}}\]
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Which is the most stable Carbocation here
A)
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B)
done
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C)
done
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D)
done
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View Answer play_arrow
Formula for tear gas is
A)
\[{{N}_{2}}O\]
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B)
\[CC{{l}_{3}}N{{O}_{2}}\]
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C)
\[COC{{l}_{2}}\]
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D)
None of these
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View Answer play_arrow
Which of the following is potassium ferricyanide?
A)
\[{{K}_{4}}[Fe{{(CN)}_{6}}]\]
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B)
\[{{K}_{3}}[Fe{{(CN)}_{6}}]\]
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C)
\[{{K}_{3}}[Fe{{(CN)}_{4}}]\]
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D)
\[{{K}_{3}}[Fe{{(CN)}_{3}}]\]
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View Answer play_arrow
Sodium nitroprusside when added to an alkaline solution of sulphide ions produce a
A)
Red colouration
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B)
Blue colouration
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C)
Purple colouration
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D)
Brown colouration
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View Answer play_arrow
The product obtained on reaction of \[{{C}_{2}}{{H}_{5}}Cl\]with hydrogen over palladium is
A)
\[{{C}_{2}}{{H}_{4}}\]
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B)
\[{{C}_{3}}{{H}_{8}}\]
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C)
\[{{C}_{2}}{{H}_{6}}\]
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D)
\[{{C}_{4}}{{H}_{10}}\]
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View Answer play_arrow
A solution has pH = 5, it is diluted 100 times, then it will become
A)
Neutral
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B)
More acidic
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C)
Basic
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D)
Unaffected
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View Answer play_arrow
Ketones react with Mg-Hg over water and gives
A)
Alcohols
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B)
Pinacols
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C)
Pinacolone
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D)
None of these
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View Answer play_arrow
\[x\]is heated with soda lime and gives ethane. What is\[x?\]
A)
Methanoic acid
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B)
Ethanoic acid
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C)
Propanoic acid
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D)
Either (a) or (c)
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View Answer play_arrow
Which is used to produce smoke screens?
A)
Calcium phosphide
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B)
Sodium carbonate
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C)
Zinc phosphide
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D)
Zinc sulphide
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The conversion of maltose to glucose is possible by the enzyme
A)
Zymase
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B)
Lactase
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C)
Maltase
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D)
Diastase.
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View Answer play_arrow
The product obtained on fusion of \[BaS{{O}_{4}}\]and \[N{{a}_{2}}C{{O}_{3}}\]is
A)
\[BaO\]
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B)
\[~BaC{{O}_{3}}\]
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C)
\[~BaHS{{O}_{4}}\]
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D)
\[Ba{{(OH)}_{2}}\]
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View Answer play_arrow
0.5 M of \[{{H}_{2}}S{{O}_{4}}\]is diluted from 1 litre to 10 litre, normality of the resulting solution is
A)
1 N
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B)
10 N
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C)
11 N
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D)
0.1 N
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View Answer play_arrow
Which of the following is incorrect about keys?
A)
Key is a taxonomical aid used for identification of plants and animals based on the similarities and dissimilarities.
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B)
Separate taxonomic keys are required for each taxonomic category such as family, genus and species for identification purposes.
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C)
Keys are generally analytical in nature.
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D)
Key is an another taxonomical aid used for nomenclature of plants and animals based on the similarities and dissimilarities.
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The molecular weight of RNA of viroid is
A)
High
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B)
Low
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C)
Very high
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D)
Any of the above
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View Answer play_arrow
Find the number of following fungus that belongs to the class Ascomycetes (count total number).
Rhizopus, Penicillium, Yeast, Mucor, Agaricus, Puccinia, Albugo, Claviceps, Neurospora, Alter- naria, Trichoderma, Aspergillus, Ustilago, Morels, Buffles, Colletotrichum, Toadstool.
A)
5
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B)
7
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C)
9
done
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D)
10
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View Answer play_arrow
Lichens are
A)
Pollution indicators
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B)
Symbiotic association between algae and fungus
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C)
Pioneer species in primary succession on rocks
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D)
All of the above
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Which kingdom of Whittaker is not well-defined?
A)
Monera
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B)
Protista
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C)
Fungi
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D)
Animalia
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View Answer play_arrow
Find out the total number of false statements.
(A) Cyanpbacteria have chlorophyll 'a' like green plants. (B) Bacteria which oxidize various inorganic substances such as nitrates and ammonia and use the released energy for ATP production are chemosynthesis autotrophic bacteria. (C) Heterotrophic bacteria are less in abundance in nature. (D) Majority of the heterotrophic bacteria are decomposers. (E) Chemosynthetic autotrophic bacteria play an important role in recycling of nutrients like nitrogen, phosphorus, iron and sulphur.
A)
1
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B)
2
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C)
3
done
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D)
4
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View Answer play_arrow
Which is not a correct matching?
A)
Rust \[\to \] Puccinia
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B)
Yeast \[\to \] Bread and Beer
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C)
Chrysophyte\[\to \] Diatomaceous earth
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D)
Penicillium\[\to \]Red tide
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View Answer play_arrow
Which alga shows diplontic life cycle?
A)
Chara
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B)
Fucus
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C)
Ectocarpus
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D)
Polysiphonia
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In gymnosperms, the mycorrhizal association is found in
A)
Cycas
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B)
Pinus
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C)
Cedrus
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D)
All of the above
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View Answer play_arrow
Bilaterally symmetrical, triploblastic, segmented, coelomate and covered by chitinous exoskeleton are features of
A)
Annelida
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B)
Vertebrata
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C)
Amphibia
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D)
Arthropoda
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View Answer play_arrow
Select the difference which is wrongly written.
A)
(Cartilaginous fish)
(Bony fishes)
Operculum absent
Operculum present
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B)
(Cartilaginous fish)
(Bony fishes)
Internal fertilization
External fertilization
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C)
(Cartilaginous fish)
(Bony fishes)
Possess 5 to 7 pair
of gills Posses 4 pair of gills
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D)
(Cartilaginous fish)
(Bony fishes)
Mostly oviparous
Mostly viviparous
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The excretory organ present in organism given in the figure is
A)
Rennet cells
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B)
Protonephridia or flame cells
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C)
Malpighian tubule
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D)
Organ of Bojanus
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View Answer play_arrow
Diadelphous condition is seen in all except
A)
Soya bean
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B)
Lupin
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C)
Brassica rapa
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D)
China rose
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Floral formula of Brassicaceae is
A)
done
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B)
done
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C)
done
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D)
done
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Select the incorrect matching:
A)
Indigofera - Sepals five (gamosepalous), corolla (vexillary aestivation)
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B)
Brinjal - Sepals five united (persistent, valvate aestivation), Petals five united (valvate aestivation)
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C)
Asparagus - Sepals three often united into tube (valvate aestivation)
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D)
Colchicine - Perianth present tepals six (valvate aestivation)
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Pinnately compound leaf is found in
A)
Lemon
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B)
Bombax
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C)
Desmodium
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D)
Neem
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A placentation in which ovules are born on central axis and the septa are absent is found in
A)
Argemone and mustard
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B)
Dianthus and primrose
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C)
Rose and tomato
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D)
Pea
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External protective tissues of plants (of dicot stem are)
A)
Cork and pericycle
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B)
Cortex and epidermis
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C)
Pericycle and cortex
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D)
Epidermis and cork
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External genitalia in cockroach is represented by
A)
Male gonapophysis
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B)
Phallomere
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C)
Ejaculatory duct
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D)
Both (a) and (B)
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View Answer play_arrow
The four sketches (A, B, C and D) given below, represent four different types of animal tissues. Which one of these is correctly identified in the options given, along with its correct location and function?
A)
Tissue Location Function Collagen fibres Cartilage Attach skeletal muscles to bones
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B)
Tissue Location Function Smooth muscle tissue Heart Heart contraction
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C)
Tissue Location Function Columnar epithelium Nephron Secretion and absorption
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D)
Tissue Location Function Glandular epithelium Intestine Secretion
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View Answer play_arrow
How is new mitochondria formed by the pre-existing ones?
A)
Mitosis
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B)
Fission
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C)
Conjugation
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D)
Budding
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Identify A, B, C, D, E and F given in the figure.
A)
A: interdoublet Bridge, B: Peripheral microtubules (doublets), C: Central microtubule, D: Plasma membrane, E: Central bridge, F: Radial spoke.
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B)
A: Central sheath, B: Radial spoke, C: Interdoublet bridge, D: Central microtubule, E: Plasma membrane, F: Peripheral microtubules (doublets).
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C)
A: Central sheath, B: Plasma membrane, C: Peripheral microtubules (doublets), D: Radial spoke, E: Central microtubule, F: Interdoublet bridge.
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D)
A: Plasma membrane, B: Radial spoke, C: Peripheral microtubules (doublets), D: Central sheath, E: Central microtubule, F: Interdoublet bridge.
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View Answer play_arrow
A elaborate network of filamentous proteinaceous structures present in the cytoplasm is collectively known as
A)
Cilia
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B)
Flagella
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C)
Cytoskeleton
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D)
ER
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View Answer play_arrow
The site of active ribosomal RNA synthesis
A)
Nucleolus
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B)
Mitochondria
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C)
Cytoplasm
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D)
All of the above
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Water soluble pigments found in plant cell vacuoles are
A)
Xanthophylls
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B)
Chlorophylls
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C)
Carotenoids
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D)
Anthocyanins
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The most abundant protein in the whole biosphere is
A)
RuBisCO
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B)
Collagen
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C)
Elastin
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D)
Albumin
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View Answer play_arrow
Which of the following is a ketogenic amino acid?
A)
Alanine
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B)
Glycine
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C)
Methionine
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D)
Leucine
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Most of the cell organelle duplicate during
A)
\[{{G}_{1}}-\]phase
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B)
S-phase
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C)
\[{{G}_{2}}-\] phase
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D)
M-phase
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View Answer play_arrow
Number of chromosomes present in pollen grains six. What shall be their number in leaf cells?
A)
12
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B)
24
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C)
6
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D)
3
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Which of the following is the longest phase of meiosis?
A)
Prophase I
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B)
Anaphase I
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C)
Prophase II
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D)
Metaphase II
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Choose the total number of correct statements from the following:
(A) Some channels in the membrane are always open (B) Porins allow the passing of molecule of size up to small protein. (C) Water channel made up of eight different type of aquaporins. (D) Facilitated diffusion is very specific.
A)
1
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B)
2
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C)
3
done
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D)
4
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Select the true and false statement:
(A) Morphological changes which are indicative of certain element deficiencies are known a deficiency symptoms. (B) For activity, the mobilized element deficiency symptoms first appear in older tissues. (C) When an element is relatively immobile, the deficiency symptom first appears in younge tissue. (D) The mineral nutrition study of plant has great significance to agriculture and horticulture.
A)
T T F F
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B)
T T T T
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C)
T F F T
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D)
F F F T
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View Answer play_arrow
Find out the similarity between \[{{C}_{3}}\] and \[{{C}_{4}}\] pathway
A)
Both are equally efficient
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B)
Organic acid is formed as the first product \[C{{O}_{2}}\]fixation
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C)
Both require one type of cell to occur
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D)
Both takes place in all the plants
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View Answer play_arrow
\[{{C}_{4}}\]plant is characterized by
A)
High tolerance to temperature
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B)
Lacks process of photorespiration
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C)
Greater productivity of biomass
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D)
All of the above
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View Answer play_arrow
Light saturation occurs at __ per cent of the fall
A)
2
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B)
5
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C)
10
done
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D)
20
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View Answer play_arrow
How many of the following PGR helps to overcome apical dominance? Auxins, Gibberellins, Cytokinins, Ethylene
A)
1
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B)
2
done
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C)
3
done
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D)
4
done
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View Answer play_arrow
Bile is secreted by
A)
Glisson's Capsule
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B)
Gall bladder
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C)
Hepatic Cells
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D)
Kupfier cells
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View Answer play_arrow
Protection of mucosal epithelium from highly concentrated \[HCl\] in stomach is performed by
(A) \[HCO_{3}^{-}\]ion (B) Mucus (C) Pepsin (D) Intrinsic factor
A)
A and C only
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B)
B only
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C)
A and B only
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D)
A, B and C only
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View Answer play_arrow
Arrange the following in the order of increasing volume.
(1) Tidal volume (2) Residual volume (3) Expiratory reserve volume (4) Inspiratory reserve volume
A)
1 < 2 < 3 < 4
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B)
1 < 4 < 3 < 2
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C)
1 < 3 < 2 < 4
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D)
1 < 4 < 2 < 3
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View Answer play_arrow
What is correct statement about human respiration?
A)
About 90 per cent of \[C{{O}_{2}}\]is carried by haemoglobin as carbaminohaemoglobin.
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B)
Neural signals from pneumotaxic centre of pons can increase the duration of inspiration.
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C)
Workers in grinding and stone breaking industries may suffer from lung fibrosis.
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D)
Cigarette smoking leads to the inflammation of bronchi.
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View Answer play_arrow
When ventricular systole occurs
A)
Atrial diastole coincides
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B)
Tricuspid and bicuspid valves close
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C)
Semilunar valves guarding the pulmonary artery and aorta are forced to open.
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D)
All of the above
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View Answer play_arrow
In mammals, which blood vessel would normally carry the largest amount of urea?
A)
Renal Vein
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B)
Dorsal Aorta
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C)
Hepatic Vein
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D)
Hepatic Portal Vein
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View Answer play_arrow
Following is the figure of actin (thin) filaments. Identify A, B and C.
A)
A: Tropomyosin, B: Troponin, C: F actin
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B)
A: Tropomyosin, B: Myosin, C: F Tropomyosin
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C)
A: Troponin, B: Tropomyosin, C: Myosin
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D)
A: Troponin, B: Tropomyosin, C: F actin
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Which of the following occurs due to reflex action?
A)
Vomiting
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B)
Sneezing
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C)
Coughing
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D)
All of the above
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View Answer play_arrow
The features of cretinism includes
A)
Stunted growth
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B)
Mental retardation and low IQ
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C)
Abnormal skin and deaf mutism
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D)
All of the above
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View Answer play_arrow
Select the correct statements from the following.
(A) Melatonin influences the menstrual cycle and our defence capability. (B) In adult women, hypothyroidism may cause menstrual cycle to become irregular. (C) Protein hormone secreted by thyroid, TCT (Thyrocalcitonin) regulates the blood calcium level. (D) Maintenance of water and the electrolytic balance is also influenced by thyroid hormone. (E) Oxytocin causes ejection of milk from the mammary gland.
A)
A, B, C only
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B)
A, B, C, E only
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C)
All except D
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D)
All statements are correct
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View Answer play_arrow
Which of the following is the effect of Cortisol?
A)
Anti-inflammatory
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B)
Immunosuppressant
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C)
Increased RBC production
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D)
All of the above
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The microsporangium cells which possess denser cytoplasm and have more than one nucleus is the characteristic of
A)
Middle layers
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B)
Tapetum
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C)
Endothecium
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D)
Epidermis
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Pollen grains
(A) Represent gametophytic phase of plant (B) Can cause severe allergies like asthma bronchitis (C) Are rich in nutrient (D) Are used as food supplements (E) Are available in form of tables and syrups in the market of western countries
A)
Only A is correct
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B)
All are correct
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C)
All are wrong
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D)
Only A, B and C are correct
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Which one of the following is incorrect?
(A) Parthenium or carrot gases causes pollen allergy. (B) Vegetative cell of pollen has abundant food reserve. (C) All pollen's cause severe allergies and bronchial afflictions. (D) Sporopollenin is the most resistant organic matter known.
A)
All of the above
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B)
A
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C)
B
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D)
C
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After three meiotic divisions in the functional mega- spore, the gametophyte (embryo sac) has how many cells?
A)
7 cells
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B)
4 cells
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C)
5 cells
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D)
8 cells
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In water pollinated species
(A) Pollen grains are long and ribbon-like (B) All pollen grains are protected from getting wet (C) Flowers are not very colourful (D) They do not produce nectar
A)
Only A and B are correct
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B)
Only A and B are wrong
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C)
All are correct
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D)
All are wrong
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The first menstruation which begins at puberty is called
A)
Menstrual cycle
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B)
Menarche
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C)
Oogenesis
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D)
Ovulation
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The tertiary follicle in ovary is characterized by the presence of
A)
Fundus
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B)
Antrum
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C)
Vacuole
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D)
Cavity
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The technique called Gamete Intra Fallopian Transfer (GIFT) is recommended for those females
A)
Who cannot produce an ovum.
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B)
Who cannot retain the foetus inside uterus.
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C)
Whose cervical canal is too narrow to allow passage for the sperms.
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D)
Who cannot provide suitable environment for fertilization.
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The following are the indicative measures, which should be considered for the better improvement of reproductive health of society. Choose the correct combination.
(i) Better awareness about sex related problems (ii) Better detection and cure of STD's (iii) Better post-natal care (iv) Increased number of couple with large families
A)
i and iv only
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B)
ii, iii and iv only
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C)
i and ii only
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D)
i, ii and iii only
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Match the following
Column - I Column - II (A) Haemophilia (1) Board palm with characteristic palm creased (B) Down's syndrome (2) Delayed clotting of blood (C) Klinefelter's syndrome (3) Male feminine development (D) Turner's Syndrome (4) Rudimentary ovaries
A)
A: 1, B: 3, C: 2, D: 4
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B)
A: 2, B: 1, C: 3, D: 4
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C)
A: 4, B: 2, C: 1, D: 3
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D)
A: 1, B: 2, C: 3, D: 4
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In the\[{{F}_{2}}\] generation of a Mendelian dihybrid cross, the number of phenotypes and genotypes are
A)
Phenotypes - 4; genotypes - 16
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B)
Phenotypes - 9; genotypes - 4
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C)
Phenotypes - 4; genotypes - 8
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D)
Phenotypes - 4; genotypes - 9
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If yellow body, white eyed drosophila is crossed with wild brown body red eyes drosophila. Then what would be the frequency of recombinants in \[{{F}_{1}}\]generation?
A)
100 %
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B)
1.3 %
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C)
98.7 %
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D)
0 %
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Monosomy and trisomy can be represented as
A)
2n + 1, 2n + 3
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B)
2n - 1, 2n - 2
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C)
2n, 2n + 1
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D)
2n - 1, 2n + 1
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Deletion or insertion of base pairs of DNA causes
A)
Point mutation
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B)
Frame-shift mutation
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C)
Transversion
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D)
All of the above
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Identify A, B and C in the following figure?
A)
A: CTC, B: GAG, C: Glu
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B)
A: GAG, B: CTC, C: Pro
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C)
A: CTC, B: GAG, C: Thr
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D)
A: CTC, B: GAG, C: Leu
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Give pedigree shows the inheritance of autosomal recessive gene. What is the genotype of given parents?
A)
AA, aa
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B)
Aa, AA
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C)
aa, aa
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D)
Aa, Aa
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'Beads-on-string' structure can be viewed under
A)
Light microscope
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B)
Compound microscope
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C)
Confocal Laser microscope
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D)
Electron microscope
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Typically a nucleosome consists of bow many pairs?
A)
190
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B)
200
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C)
300
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D)
310
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In eukaryotes, RNA polymerase III is responsible for the synthesis of
A)
28 sRNA, 18 sRNA and 5.8 sRNA
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B)
tRNA, hnRNA, rRNA
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C)
tRNA, 5 sRNA, snRNA
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D)
hnRNA, tRNA, rRNA
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Dryopithecus and Ramapithecus existed.???? milion years ago.
A)
5
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B)
10
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C)
15
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D)
25
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Match the column:
(1) Pre-historic cave art 10,000 years back (2) Agriculture 18,000 years back (3) Neanderthal man 1.5 million years ago (4) Homo erectus 40,000 to 1,00,000 years back
A)
1:A, 2:C, 3:B, 4:D
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B)
1:D, 2:B, 3:C, 4:A
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C)
1:B, 2:A, 3:D, 4:C
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D)
1:C, 2:A, 3:D, 4:B
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This diagram shows
A)
Adaptive radiation
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B)
Genetic drift
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C)
Founder effect
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D)
Mutation
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Pneumonia is spread by
A)
Inhaling droplets/aerosols
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B)
Mosquito
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C)
Reusing syringes
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D)
Genetic disease
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Ringworm is caused by
A)
Round worm
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B)
Bacteria
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C)
Fungi
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D)
virus
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An antibody is represented as
A)
\[{{H}_{1}}{{L}_{2}}\]
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B)
\[{{H}_{2}}{{L}_{2}}\]
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C)
\[{{H}_{4}}{{L}_{1}}\]
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D)
\[{{H}_{4}}{{L}_{4}}\]
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When a quick immune response is required.
A)
Directly inject weakened pathogen at time of emergency
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B)
Directly inject preformed antigens
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C)
Directly inject preformed antibodies
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D)
Directly inject immunodepressants
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Select the correct matching
A)
Plant breeding: Purposeful manipulation of plant species in order to create desired plant types that are better suited for cultivation gives better yield and are disease resistant.
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B)
Gene bank: The entire collection of plant/seeds having all the diverse alleles for all genes in a given crop.
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C)
Fishery: Industry devoted to the catching, processing or selling of fish only.
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D)
MOET: It is used for herd improvement. In this method, a cow is administered hormones, with LH-like activity, which leads to super-ovulation (i.e., produce 6 to 8 eggs per cycle).
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Baculovirus belongs to the genes
A)
Retro Virus
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B)
Nucleohedero Virus
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C)
Nucleopolyhedro Virus
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D)
Polyhedron Virus
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The way to introduce alien DNA into host cell includes
A)
Disarmed pathogens
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B)
Biolistics or gene gun
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C)
Micro-injection
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D)
All of the above
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Select the incorrect matching:
A)
pBR322 E. coli cloning vector
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B)
EcoRl, ClaI, - Hindlll Restriction enzyme
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C)
ROP Protein involved in the replication of the plasmid
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D)
PCR Technique in which multiple copies of the gene (or DNA) of interest in synthesized in vitro
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Restriction enzymes of E. coli are
A)
HindIII
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B)
Barn
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C)
EcoRI, EcoRll
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D)
All of the above
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Select the correct statement from the following:
A)
Most Bt-toxins are insect group non-specific.
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B)
Bt-toxin gene is coded by the name 'CRY?.
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C)
Genes Cry 1 Ac and Cry2Ab forms protein that control cotton bollworms.
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D)
CrylAa gene forms protein that control corn borer.
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Golden rice is
A)
A variety of rice grown along the yellow river in China.
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B)
Long stored rice having yellow colour tint.
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C)
A transgenic rice having gene for (3-Carotene.
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D)
Wild variety of rice with yellow coloured grains.
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Carrying capacity K means _____
A)
Organism's capability of maximum reproduction.
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B)
Nature's limit for supporting maximum growth of a species.
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C)
Nature's limit for supporting maximum number of species.
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D)
Organism's capability to withstand environmental odds.
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Who showed that five closely related species of warblers living on the same tree were able to avoid competition and coexist due to behavioral differences in their forging activities?
A)
Connell
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B)
Me Arthur
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C)
Gause
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D)
Darwin
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Find out the incorrect statement from the following.
A)
In brood parasitism (of Koel and Crow), the eggs of parasitic bird have evolved to resemble the host's egg in size and colour to reduce the chance of the host bird detecting the foreign eggs and ejecting them from the host.
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B)
Majority of parasite harming the host.
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C)
Many parasites have evolved to be host specific in such a way that both host and the parasite tend to co-evolve.
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D)
Monarch butterfly require chemical by feeding on a poisonous weed in its adult stage, that chemical makes it highly distasteful to the birds.
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Which of the following represent simple GFC (Grazing Food Chain)?
A)
Grass \[\to \]Goat \[\to \]Man
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B)
Goat\[\to \]Grass \[\to \]Man
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C)
Detritus\[\to \]Fungi\[\to \]Man
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D)
Fungi\[\to \] Detritus \[\to \] Grass
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Nutrient cycling is known as
A)
Biogeochemical cycle
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B)
Calvin cycle
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C)
Hatch-Slack pathway
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D)
Krebs cycle
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Match the Column-I (Recently extinct animals) with Column-II (Places from where they are extinct).
Column-I Column-II (A) Dodo (1) Russia (B) Quagga (2) Australia (C) Thylacine (3) Africa (D) Steller's sea cow (4) Mauritius
A)
A: 1, B: 2, C: 3, D: 4
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B)
A: 4, B: 3, C: 2, D: 1
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C)
A: 4, B: 2, C: 3, D: 1
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D)
A: 4, B: 1, C: 2, D: 3
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Following chart representing the proportionate number of species of major taxa of vertebrates, Identify A, B, C and D in following pie chart.
A)
A: Mammals, B: Birds, C: Reptile D: Amphibians
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B)
A: Amphibians, B: Birds, C: Mammal D: Reptiles
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C)
A: Reptiles, B: Amphibians, C: Bird D: mammals
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D)
A: Mammals, B: Reptiles, C: Birds, D: Amphibians
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What is the contribution of methane gas to the total global warming?
A)
60%
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B)
20%
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C)
14%
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D)
6%
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Match the column
Column-I Column-II (A) DV (1) Dobson unit (B) CFCs (2) Chlorofluorocarbons (C) BOD (3) Biological Oxygen Demand (D) PIL (4) Public Interest Litigation (E) CNG (5) Compressed Natural Gas
A)
A: 1, B: 3, C: 2, D: 4, E: 5
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B)
A: 4, B: 3, C: 2, D: 1, E: 5
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C)
A: 1, B: 2, C: 3, D: 4, E: 5
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D)
A: 1, B: 2, C: 4, D: 3, E: 5
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Rachel Carson's famous book 'Silent Spring? is related to
A)
Pesticide pollution
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B)
Noise Pollution
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C)
Population explosion
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D)
Ecosystem management
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