If energy E, velocity V and time T were taken as fundamental units, the dimensions for surface tension in these units are.
A)
\[{{E}^{\,-2}}\,V{{T}^{\,-2}}\]
done
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B)
\[{{E}^{\,-2}}\,{{V}^{\,-2}}T\]
done
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C)
\[E{{V}^{\,-2}}{{T}^{\,-2}}\,\]
done
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D)
\[{{E}^{-2}}{{V}^{\,-2}}{{T}^{\,-2}}\,\]
done
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A mass M is suspended from a spring of negligible mass the spring is pulled a little and then released so that the mass executes SHM with a time period T. If mass is increased by m, then time period becomes \[\frac{m}{M}\] The ratio of:
A)
\[\frac{9}{16}\]
done
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B)
\[\frac{4}{5}\]
done
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C)
\[\frac{25}{16}\]
done
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D)
\[\frac{5}{4}\]
done
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View Answer play_arrow
A particle having a mass 0.5kg is projected under gravity with a speed of 98m/s at an angle of\[{{60}^{{}^\circ }}\]. The magnitude of the change in momentum in N/sec of the particle after 10 sec is:
A)
0.5
done
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B)
49
done
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C)
98
done
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D)
490
done
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View Answer play_arrow
A steel rod of length L, area of cross section A young modulus Y and coefficient of linear expansion is heated through\[{{t}^{{}^\circ }}C\]. The work that can be performed by the rod when heated will be:
A)
\[(YA\alpha t)\,\,(L\alpha t)\]
done
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B)
\[\frac{1}{2}\,\,(YA\alpha t)\,\,(L\alpha t)\]
done
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C)
\[\frac{1}{2}\,\,(YA\alpha t)\,\frac{1}{2}\,(L\alpha t)\]
done
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D)
\[2\,(YA\alpha t)\,(L\alpha t)\]
done
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View Answer play_arrow
A weightless thread can withstand tension up to 30N. A stone of mass 0.5kg is tied to it and is revolved in a circular path of radius 2m in a vertical plane. If\[g=10m/{{s}^{2}}\], then the maximum angular velocity of the stone will be:
A)
\[5\,rad/s\]
done
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B)
\[\sqrt{30}\,red/s\]
done
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C)
\[\sqrt{60}\,red/s\]
done
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D)
\[10\,red/s\]
done
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View Answer play_arrow
Which vector is added to \[\hat{i}-5\hat{j}+2\hat{k}\] and \[3\hat{i}+6\hat{j}-7\hat{k}\] will make a unit vector along the x-axis?
A)
\[\hat{i}-5\hat{j}+2\hat{k}\]
done
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B)
\[3\hat{i}+6\hat{j}-7\hat{k}\]
done
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C)
\[-\,3\hat{i}-\hat{j}+5\hat{k}\]
done
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D)
\[4\hat{i}+\hat{j}-5\hat{k}\]
done
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View Answer play_arrow
When the voltage drop across a p-n junction diode is increased from 0.65V to 0.70V, the change in the diode current is 5mA. The dynamic resistance of the diode is:
A)
\[20\Omega \]
done
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B)
\[50\Omega \]
done
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C)
\[10\Omega \]
done
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D)
\[80\Omega \]
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View Answer play_arrow
Consider a soap film on a rectangular frame of wire of area\[4\times 4\,c{{m}^{2}}\]. If the area of the soap film is increased to \[4\times 5\,c{{m}^{2}}\], the work done in the process will be:(surface tension \[=3\times {{10}^{-2}}N/m\])
A)
\[12\times {{10}^{-6}}J\]
done
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B)
\[24\times {{10}^{-6}}J\]
done
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C)
\[60\times {{10}^{-6}}J\]
done
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D)
\[96\times {{10}^{-6}}J\]
done
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View Answer play_arrow
B Photon and electron are given same energy say \[({{10}^{-20}}J)\] wavelength associated with photon and electron are \[{{\lambda }_{p}}\]and \[{{\lambda }_{e}}\],the correct statement will be:
A)
\[{{\lambda }_{P}}>{{\lambda }_{e}}\]
done
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B)
\[{{\lambda }_{P}}>{{\lambda }_{e}}\]
done
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C)
\[{{\lambda }_{P}}={{\lambda }_{e}}\]
done
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D)
\[\frac{{{\lambda }_{e}}}{{{\lambda }_{P}}}=c\]
done
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View Answer play_arrow
If a magnetic substance is kept in a magnetic field, then which of the following substance is thrown out?
A)
Paramagnetic
done
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B)
Ferromagnetic
done
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C)
Diamagnetic
done
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D)
Anti - ferromagnetic
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View Answer play_arrow
The ratio of areas between the electron orbits for the first excited state to the ground state for the hydrogen atom is:
A)
2:1
done
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B)
4:1
done
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C)
8:1
done
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D)
16:1
done
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View Answer play_arrow
A wire carrying current I and other carrying 21 in the same direction produce a magnetic field B at the midpoint. What will be the field when 21 current is switched off?
A)
\[B/2\]
done
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B)
\[2B\]
done
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C)
\[B\]
done
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D)
\[4B\]
done
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View Answer play_arrow
A particle is displaced from a position \[(2\hat{i}-\hat{j}+\hat{k})\] to another position under the action of the force\[(2\hat{i}-\hat{j}+\hat{k})\]. The work done by the force in an arbitrary unit is:
A)
8
done
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B)
10
done
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C)
12
done
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D)
16
done
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View Answer play_arrow
Two similar coil of radius R are lying concentrically with their planes at right angles to each other. The currents flowing in them are I and 21, respectively. The resultant magnetic field induction at the centre will be:
A)
\[\frac{\sqrt{5}{{\mu }_{0}}I}{2R}\]
done
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B)
\[\frac{3{{\mu }_{0}}I}{2R}\]
done
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C)
\[\frac{{{\mu }_{0}}I}{2R}\]
done
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D)
\[\frac{{{\mu }_{0}}I}{R}\]
done
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View Answer play_arrow
If the radius of a spherical liquid (of surface tension S) drop increases from r to\[r+\Delta r\], the corresponding increase in the surface energy is:
A)
\[8\pi r\Delta S\]
done
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B)
\[4\pi r\Delta rS\]
done
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C)
\[16\pi r\Delta rS\]
done
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D)
\[2\pi r\Delta rS\]
done
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View Answer play_arrow
For photoelectric emission from certain metal, the cut off frequency is d. If radiation of frequency \[2\upsilon \] impinges on the metal plate the maximum possible velocity of emitted electron will be:
A)
\[\sqrt{\frac{hv}{2m}}\]
done
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B)
\[\sqrt{\frac{hv}{m}}\]
done
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C)
\[\sqrt{\frac{2hv}{m}}\]
done
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D)
\[\sqrt{\frac{hv}{m}}\]
done
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View Answer play_arrow
A dip needle in a plane perpendicular to magnetic meridian will remain:
A)
Vertical
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B)
In any direction
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C)
Horizontal
done
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D)
At any angle of dip to the horizontal
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View Answer play_arrow
In the given circuit A, B and C are inputs and Y is the output. The output of Y is:
A)
High for all the high inputs
done
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B)
High for all the low inputs\
done
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C)
High when A=1, B=1, C=0\
done
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D)
Low for all inputs
done
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View Answer play_arrow
A what altitude (h) above the earth surface would the acceleration due to gravity be of its value at earth's surface:
A)
h = R
done
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B)
h = 4R
done
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C)
h = 2R
done
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D)
h = 16R
done
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View Answer play_arrow
When a wave travels in a medium, displacement of a particle is given by \[y=a\] sin \[2\pi \,\text{(}dt-cx)\]where a, b, c are constant. The maximum particle velocity will be twice the wave velocity if
A)
\[b-ac\]
done
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B)
\[b=\frac{1}{ac}\]
done
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C)
\[c=\pi a\]
done
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D)
\[c=\frac{1}{\pi a}\]
done
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View Answer play_arrow
In a potentiometer experiment, the balancing with a cell is at length 240cm. On shunting the cell with a resistance of 2Q, the balancing becomes 120cm. The internal resistance of the-cell is:
A)
\[1\Omega \]
done
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B)
\[0.5\Omega \]
done
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C)
\[4\Omega \]
done
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D)
\[2\Omega \]
done
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View Answer play_arrow
C Number of nuclei of a radioactive substance at time t = 0 are 2000 and 1800 at time t = 2sec. Number of nuclei left after t = 6sec is:
A)
1442
done
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B)
1554
done
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C)
1652
done
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D)
1458
done
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View Answer play_arrow
The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done by the system in going from \[A\to B\to C\]is 30J, and 40J heat is given to the system. The change in internal energy between A and C is:
A)
10J
done
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B)
70J
done
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C)
84J
done
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D)
134J
done
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A body A is thrown up vertically from the ground with a velocity \[{{V}_{{}^\circ }}\] and another body B is simultaneously dropped from a height H. The meet at a height H/2, if \[{{V}_{{}^\circ }}\] is equal to:
A)
\[\sqrt{2gH}\]
done
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B)
\[\sqrt{gH}\]
done
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C)
\[\frac{\sqrt{gH}}{2}\]
done
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D)
\[\frac{\sqrt{2g}}{H}\]
done
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View Answer play_arrow
If a ray of light in a denser medium strikes a rarer medium at an angle of incidence i, the angle of reflection and refraction are respectively r and r'. If the reflected and refraction rays are at right angles to each other, the critical angle for the given pair of media is:
A)
\[si{{n}^{-1}}1\text{ (tan r }\!\!'\!\!\text{ )}\]
done
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B)
\[si{{n}^{-1}}1\text{ (tan r }\!\!'\!\!\text{ )}\]
done
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C)
\[{{\tan }^{-1}}1\text{ (Sin i }\!\!'\!\!\text{ )}\]
done
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D)
\[Co{{t}^{-1}}1\text{ (tan i }\!\!'\!\!\text{ )}\]
done
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View Answer play_arrow
Starting from the centre of the earth having radius R, the variation of g (acceleration due to gravity) is shown by:
A)
done
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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
On a frictionless surface, a block of mass M moving at speed v collides elastically with another block of same mass M which is initially at rest. After collision the first block moves at an angle 6 to its initial direction and has a speed The second block's speed after the collision is:
A)
\[\frac{3v}{\sqrt{2}}\]
done
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B)
\[\frac{\sqrt{3v}}{2}\]
done
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C)
\[\frac{\sqrt{gH}}{2}\]
done
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D)
\[\frac{\sqrt{2g}}{H}\]
done
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View Answer play_arrow
If a sources approaches and recedes from observer with same velocity, then the ratio of frequencies (apparent) is 6 : 5, then velocity of source is: \[({{V}_{s}}=300m/s)\]
A)
20m/s
done
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B)
10m/s
done
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C)
30m/s
done
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D)
33m/s
done
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View Answer play_arrow
A wire of a certain material is stretched slowly by 10%. Its new resistance and specific resistance become respectively:
A)
1.2 times, 1.1 times
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B)
1.21 times, same
done
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C)
Both same
done
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D)
1.1 times, 1.1 times
done
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View Answer play_arrow
If acceleration of a particle at any time is given by a = 2t + 5 calculate the velocity after 5sec, if it starts from rest:
A)
50m/s
done
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B)
25m/s
done
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C)
100m/s
done
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D)
75m/s
done
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View Answer play_arrow
1 mole of an ideal gas goes from an initial state A to final state B via two processes. It first undergoes isothermal expansion from volume V to 3V and their its volume is reduced from 3V to V at constant pressure. The correct p-V diagram representing the two process 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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View Answer play_arrow
In the Young's double slit experiment. The intensity of light at a point on the screen (where path difference is\[\lambda \]) is K, (\[\lambda \] being the wavelength used). The intensity at a point where the path difference is \[\lambda /4\], will be:
A)
\[K\]
done
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B)
\[\frac{K}{4}\]
done
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C)
\[\frac{K}{2}\]
done
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D)
\[Zero\]
done
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View Answer play_arrow
If the power dissipated in the \[9\Omega \] resistor in the circuit shown is 36W, then the potential difference across the \[2\Omega \] resistor is:
A)
8V
done
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B)
10V
done
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C)
2V
done
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D)
4V
done
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View Answer play_arrow
A ray of light is incident at \[{{60}^{{}^\circ }}\] on one face of a prism of angle \[{{30}^{{}^\circ }}\] and the emergent ray makes \[{{30}^{{}^\circ }}\] with the incident ray. The value of h is:
A)
1.732
done
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B)
1.414
done
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C)
1.5
done
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D)
1.33
done
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View Answer play_arrow
Three blocks of masses \[{{m}_{1}},{{m}_{2}}\] and \[{{m}_{3}}\] are connected by massless strings as shown on a frictionless table. They are pulled with a force of 40N. If\[{{m}_{1}}=10kg\], \[{{m}_{2}}=6kg\] and \[{{m}_{3}}=4kg\], then tension \[{{T}_{2}}\] will be:
A)
10N
done
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B)
20N
done
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C)
32N
done
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D)
40N
done
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View Answer play_arrow
Two condensers: one of capacity C and the other of capacity , are connected to a V-volt battery as shown
The work done in charging fully both the condenser is:
A)
\[2C{{V}^{2}}\]
done
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B)
\[\frac{1}{4}C{{V}^{2}}\]
done
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C)
\[\frac{3}{4}C{{V}^{2}}\]
done
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D)
\[\frac{1}{2}C{{V}^{2}}\]
done
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View Answer play_arrow
A 50Hz AC source of 20V is connected across R and C as shown in figure. The voltage across R is 12V the voltage across C is:
A)
8V
done
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B)
16V
done
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C)
10V
done
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D)
20V
done
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View Answer play_arrow
A circular disc of radius R is removed from a bigger circular disc of radius 2R, such that circumferences of the discs coincide. The centre of mass of the new disc is \[''\alpha R''\]from the centre of the bigger disc. The value of \[\alpha \] is:
A)
\[\frac{1}{4}\]
done
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B)
\[\frac{1}{3}\]
done
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C)
\[\frac{1}{2}\]
done
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D)
\[\frac{1}{6}\]
done
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View Answer play_arrow
An ideal gas is taken through the cycle \[A\to B\to C\to A\], as shown in figure. If the net heat supplied to the gas in the cycle is 5J, th work done by the gas in process \[C\to A\]
A)
- 5J
done
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B)
- 10J
done
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C)
- 15J
done
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D)
- 20J
done
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View Answer play_arrow
In a transformer, the number of turns of primary coil and secondary coil are 5 and 4 respectively. If 220V is applied in the primary coil then the ratio of primary current to the secondary current will be:
A)
9:4
done
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B)
5:9
done
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C)
5:4
done
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D)
4:5
done
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View Answer play_arrow
A parallel plate capacitor is made by stacking n equally spaced plates connected alternatively. If the capacitance between any two adjacent plates is C, then the resultant capacitance is:
A)
(n-1)C
done
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B)
(n+1)C
done
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C)
C
done
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D)
nC
done
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View Answer play_arrow
An object is placed on the surface of a smooth inclined plane of inclination\[\theta \]. It takes time t to reach the bottom. If the same object is allowed to slide down a rough inclined plane inclination \[\theta \], it takes time nt to reach the bottom where 'n' is the number greater then 1 value of \[\mu \]:
A)
\[\mu =\tan \theta \left( 1-\frac{1}{{{n}^{2}}} \right)\]
done
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B)
\[\mu =\cot \theta \left( 1-\frac{1}{{{n}^{2}}} \right)\]
done
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C)
\[\mu =tan\theta {{\left( 1-\frac{1}{{{n}^{2}}} \right)}^{1/2}}\]
done
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D)
\[\mu =\cot \theta {{\left( 1-\frac{1}{{{n}^{2}}} \right)}^{1/2}}\]
done
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View Answer play_arrow
Two different isotherms representing the relationship between pressure P and volume V at a given temperature of the same ideal gas are shown for masses \[{{m}_{1}}\] and \[{{m}_{2}}\], then:
A)
\[{{m}_{1}}>{{m}_{2}}\]
done
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B)
\[{{m}_{1}}={{m}_{2}}\]
done
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C)
\[{{m}_{1}}<{{m}_{2}}\]
done
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D)
\[{{m}_{1}}>{{m}_{2}}+2\]
done
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View Answer play_arrow
A cubical block is floating in a liquid with half of its volume immersed in the liquid. When the whole system accelerates upwards with acceleration of\[\frac{g}{3}\], the fraction of volume immersed in the liquid will be:
A)
\[y=\frac{{{\rho }_{b}}}{{{\rho }_{\ell }}}\]
done
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B)
\[\frac{3}{8}\]
done
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C)
\[\frac{2}{3}\]
done
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D)
\[\frac{3}{4}\]
done
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View Answer play_arrow
Moment of inertia of a ring of mass M and radius R about an axis passing through the centre and perpendicular to the plane is What is the moment of inertia about its diameter?
A)
\[I\]
done
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B)
\[\frac{I}{2}\]
done
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C)
\[\frac{I}{\sqrt{2}}\]
done
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D)
\[I+M{{R}^{2}}\]
done
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View Answer play_arrow
Chemistry The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is:
A)
\[6.023\times {{10}^{19}}\]
done
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B)
\[1.084\times {{10}^{18}}\,\]
done
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C)
\[\,4.84\times {{10}^{17}}\]
done
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D)
\[6.023\times {{10}^{23}}\]
done
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View Answer play_arrow
The orbital angular momentum of an electron in 2s orbital is:
A)
\[+\frac{1}{2}\frac{h}{2\pi }\]
done
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B)
\[Zero\]
done
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C)
\[\frac{h}{2\pi }\]
done
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D)
\[Three\]
done
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View Answer play_arrow
Which of the following ions has the maximum magnetic moment?
A)
\[M{{n}^{2+}}\]
done
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B)
\[F{{e}^{2+}}\]
done
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C)
\[T{{i}^{2+}}\]
done
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D)
\[C{{r}^{2+}}\]
done
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View Answer play_arrow
Which of the following has maximum ionization potential?
A)
Be
done
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B)
K
done
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C)
Na
done
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D)
Mg
done
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View Answer play_arrow
The percentage of p-character in the orbitals forming p-p bonds in \[{{P}_{4}}\] is:
A)
25
done
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B)
33
done
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C)
50
done
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D)
75
done
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View Answer play_arrow
The decreasing valves of bond angles from \[N{{H}_{3}}\]\[({{106}^{{}^\circ }})\] to \[sb{{H}_{3}}({{101}^{{}^\circ }})\] down group-15 of the periodic table is due to:
A)
Decreasing Ip-bp repulsion
done
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B)
Decreasing electronegativity
done
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C)
Increasing Ip-bp repulsion
done
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D)
Increasing p-orbital character in \[S{{p}^{3}}\]
done
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View Answer play_arrow
When the temperature in increased, surface tension of water:
A)
Increases
done
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B)
Decreases
done
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C)
Remains constant
done
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D)
Shows irregular behaviour
done
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View Answer play_arrow
Which of the following is not is structural with\[SiC{{I}_{4}}\]?
A)
\[PO_{4}^{3\,-}\]
done
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B)
\[NH_{4}^{+}\]
done
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C)
\[SCl_{4}^{{}}\]
done
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D)
\[SO_{4}^{2\,-}\]
done
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View Answer play_arrow
2 mol of an ideal gas at \[{{27}^{{}^\circ }}C\]is expanded reversibly from 2 lit to 20 lit. Find entropy change (R = 2cal/mol k)
A)
92.1
done
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B)
0
done
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C)
4
done
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D)
9.2
done
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View Answer play_arrow
Shape of \[{{O}_{2}}{{F}_{2}}\] is similar to that of:
A)
\[{{C}_{2}}{{F}_{2}}\]
done
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B)
\[{{H}_{2}}{{O}_{2}}\]
done
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C)
\[{{H}_{2}}{{F}_{2}}\]
done
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D)
\[{{C}_{2}}{{H}_{2}}\]
done
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View Answer play_arrow
A schematic plot of /n \[{{K}_{eq}}\]versus inverse of temperature for a reaction is shown below:
The reaction must be:
A)
Exothermic
done
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B)
Endothermic
done
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C)
One with negligible enthalpy change
done
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D)
Highly spontaneous at ordinary temperature
done
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View Answer play_arrow
40 ml of 0.1 M ammonia is mixed with 20ml of M HC1. What is the pH of the mixture? (\[p{{K}_{b}}\]of ammonia solution is 4.74)
A)
4.74
done
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B)
2.26
done
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C)
9.26
done
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D)
5.00
done
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View Answer play_arrow
Which is the best description of the behaviour of bromine in the reaction given below? \[{{H}_{2}}O+B{{r}_{2}}\to HoBr+HBr\]
A)
Proton acceptor only
done
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B)
Both oxidized and reduced
done
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C)
Oxidized only
done
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D)
Reduced only
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View Answer play_arrow
Which of the following is true peroxide?
A)
\[N{{O}_{2}}\]
done
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B)
\[Mn{{O}_{2}}\]
done
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C)
\[Ba{{O}_{2}}\]
done
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D)
\[S{{O}_{2}}\]
done
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View Answer play_arrow
The substance not likely to contain \[CaC{{O}_{3}}\]is:
A)
Dolomite
done
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B)
A marble structure
done
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C)
Calcined gypsum
done
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D)
Sea shells
done
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View Answer play_arrow
The IUPAC name of is:
A)
2, 3-dimethylpentanoyl chloride
done
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B)
3, 4-dimethylpentanoyl chloride
done
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C)
1-Chloro-1-oxo-2, 3-dimethylpentane
done
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D)
2-ethyl-3-methylbutan6yl chloride
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View Answer play_arrow
The maximum number of carbon atoms arranged linearly in the molecule, \[C{{H}_{3}}-C=C-CH=C{{H}_{2}}\] is:
A)
5
done
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B)
4
done
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C)
3
done
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D)
2
done
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View Answer play_arrow
In graphite, electrons are:
A)
Localized on every third carbon
done
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B)
Present in anti-bonding orbitals
done
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C)
Localized on each carbon atom
done
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D)
Spread out between the structures
done
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View Answer play_arrow
Due to the presence of an unpaired electron, free radicals are:
A)
Chemically reactive
done
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B)
Chemically inactive
done
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C)
Anions
done
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D)
Cations
done
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View Answer play_arrow
The aromatic compounds present as particulates are:
A)
Benzene
done
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B)
Toluene
done
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C)
Nitrobenzene
done
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D)
Polycyclic hydrocarbon
done
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View Answer play_arrow
In which of the following polysubstitution takes place?
A)
done
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B)
done
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C)
done
clear
D)
done
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View Answer play_arrow
Which is most sensitive towards addition reaction?
A)
\[C{{H}_{2}}=C{{H}_{2}}\]
done
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B)
\[CH=CH\]
done
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C)
Both are equally sensitive
done
clear
D)
\[C{{H}_{3}}CH=CHC{{H}_{3}}\]
done
clear
View Answer play_arrow
Metallic lustre is explained by:
A)
Diffusion of metal ions
done
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B)
Oscillation of loose electrons
done
clear
C)
Excitation of free protons
done
clear
D)
Existence of bcc lattice
done
clear
View Answer play_arrow
If 'Z' is the number of atoms in the unit cell that represents the closest packing sequence... ABC ABC ...... the number of tetrahedral voids in the unit cell is equal to:
A)
Z
done
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B)
2Z
done
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C)
Z/2
done
clear
D)
Z/4
done
clear
View Answer play_arrow
What is the solubility of methane in benzene at 298k under 760 mm Hg. If \[{{K}_{H}}\] for the molarity of methane in benzene at 298 k is\[4.27\times {{10}^{5}}mm\] Hg.
A)
\[1.78\times {{10}^{-3}}\]
done
clear
B)
\[1.4\times {{10}^{-3}}\]
done
clear
C)
\[1.2\times {{10}^{-3}}\]
done
clear
D)
\[1.5\times {{10}^{-3}}\]
done
clear
View Answer play_arrow
Density of a 2.05 M solution of acetic acid in water is 1.02 g/ml. The molality of the solution is:
A)
2.28 mol/kg
done
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B)
0.44 mol/kg
done
clear
C)
1.14 mol/kg
done
clear
D)
3.25 mol/kg
done
clear
View Answer play_arrow
Which of the following statements is true for electrochemical Daneil cell?
A)
Electrons flow from copper electrode to zinc electrode
done
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B)
Current flows from zinc electrode to cop- per electrode
done
clear
C)
Cations move towards copper electrode
done
clear
D)
Cations move towards zinc electrode
done
clear
View Answer play_arrow
Unit of rate constant for 2nd order reaction is:
A)
\[mole\text{ }{{L}^{-1}}\text{ }{{\text{s}}^{-1}}\]
done
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B)
\[mol{{e}^{-1}}\text{ }L\,{{s}^{-1}}\]
done
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C)
\[{{\text{s}}^{-1}}\]
done
clear
D)
\[mol{{e}^{-1}}\text{ }{{L}^{2}}\text{ }{{\text{s}}^{-1}}\]
done
clear
View Answer play_arrow
For a first order reaction\[A\to B\], the reaction rate at reactant concentration of 0.01 M is found to be \[2.0\times 105\] mole\[{{L}^{-1\text{ }}}{{s}^{-1}}\]. The half-life of the reaction is:
A)
300s
done
clear
B)
30s
done
clear
C)
220s
done
clear
D)
347s
done
clear
View Answer play_arrow
Adsorption of gases on solid surface is generally exothermic because:
A)
Enthalpy is positive
done
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B)
Entropy decreases
done
clear
C)
Entropy increases
done
clear
D)
Free energy increases
done
clear
View Answer play_arrow
In the extraction of Fe from Tefiy the reducing agent is:
A)
C
done
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B)
Al
done
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C)
Electrolytic reduction
done
clear
D)
Cu
done
clear
View Answer play_arrow
When \[{{I}_{2}}\] is passes through KC1, KF, KBr:
A)
\[C{{l}_{2}}\] and \[B{{r}_{2}}\]are evolved
done
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B)
\[C{{l}_{2}}\] is evolved
done
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C)
\[C{{l}_{2}}\],\[B{{r}_{2}}\], \[{{F}_{2}}\]are evolved
done
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D)
None
done
clear
View Answer play_arrow
Which is true for the acids of phosphorus, \[{{H}_{3}}P{{O}_{2}}\,,{{H}_{3}}P{{O}_{4}}\], and \[{{H}_{3}}P{{O}_{4}}\] is:
A)
Order of their acidity is \[{{H}_{3}}P{{O}_{4}}>{{H}_{3}}PO>{{H}_{3}}P{{O}_{3}}>{{H}_{3}}P{{O}_{2}}\]
done
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B)
All are reducing in nature
done
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C)
All are tribasic acids
done
clear
D)
The geometry of phosphorus is tetrahedral in all the three
done
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View Answer play_arrow
The purple colour of \[KMn{{O}_{4}}\] is due to transition:
A)
\[C\,T(L\to M)\]
done
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B)
\[C\,T(M\to L)\]
done
clear
C)
\[d-d\]
done
clear
D)
\[P-d\]
done
clear
View Answer play_arrow
\[MnO_{4}^{2-}(1-mole)\] in neutral aqueous medium disproportionate to:
A)
2/3 mole of \[MnO_{4}^{-}\]and 1/3 mole of \[Mn{{O}_{2}}\]
done
clear
B)
1/3 mole of \[MnO_{4}^{-}\] and 2/3 mole of \[Mn{{O}_{2}}\]
done
clear
C)
1/3 mole of \[M{{n}_{2}}{{O}_{7}}\] and 1/3 mole of \[Mn{{O}_{2}}\]
done
clear
D)
2/3 mole of \[M{{n}_{2}}{{O}_{7}}\] and 1/3 mole of \[Mn{{O}_{2}}\]
done
clear
View Answer play_arrow
\[A{{g}^{+}}N{{H}_{3}}\,{{\left[ Ag(N{{H}_{3}}) \right]}^{7}}\] \[{{K}_{1}}=6.8\times {{10}^{-3}}\] \[{{\left[ Ag(N{{H}_{3}}) \right]}^{+}}+N{{H}_{3}}{{\left[ Ag{{(N{{H}_{3}})}_{2}} \right]}^{+}}\] \[{{K}_{2}}=6.8\times {{10}^{-3}}\] then the formation constant of \[{{\left[ Ag(N{{H}_{3}}) \right]}^{+}}\] is:
A)
\[1.08\times {{10}^{-7}}\]
done
clear
B)
\[1.08\times {{10}^{-5}}\]
done
clear
C)
\[1.08\times {{10}^{-9}}\]
done
clear
D)
\[None\]
done
clear
View Answer play_arrow
In the reaction
The major product is:
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
Acetaldehyde cannot show:
A)
lodoform test
done
clear
B)
Lucas lest
done
clear
C)
Benedict's test
done
clear
D)
Tollen's test
done
clear
View Answer play_arrow
Crown ethers are named as X-crown-Y. In the following crown ether, X and Y are respectively:
A)
6 and 12
done
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B)
18 and 6
done
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C)
24 and 6
done
clear
D)
6 and 27
done
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View Answer play_arrow
When 2-butyne is treated with dil \[{{H}_{2}}S{{O}_{4}}/\,HgS{{O}_{4}},\]the product formed is:
A)
Butanol-1
done
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B)
Butanone
done
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C)
2-Butanol
done
clear
D)
Acetone
done
clear
View Answer play_arrow
Which of the following will give \[{{N}_{2}}\] as on treatment with nitrous acid\[(NaN{{O}_{2}}+HCl)\]?
A)
\[{{C}_{2}}{{H}_{5}}N{{H}_{2}}\]
done
clear
B)
\[C{{H}_{3}}N{{H}_{2}}\]
done
clear
C)
\[{{(C{{H}_{3}})}_{2}}CH-N{{H}_{2}}\]
done
clear
D)
\[All\,will\,give\,{{N}_{2}}\]
done
clear
View Answer play_arrow
When nitrobenzene is reduced with zinc and mechanic NaOH, the product obtained is:
A)
Aniline
done
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B)
Phenylhydroxylamine
done
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C)
p-aminophenol
done
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D)
Azobenzene
done
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View Answer play_arrow
\[\alpha -D\,\,(+)-glucose\]and \[\beta -D\,(+)-glucose\]are:
A)
Enantiomers
done
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B)
Conformers
done
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C)
Epimers
done
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D)
Anomers
done
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View Answer play_arrow
Which of the following drugs reduces fever?
A)
Analgesic
done
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B)
Antipyretic
done
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C)
Antibiotic
done
clear
D)
Tranquilizers
done
clear
View Answer play_arrow
Soft drinks and baby feeding bottles are generally made up of:
A)
Polyester
done
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B)
Polyurethane
done
clear
C)
Polystyrene
done
clear
D)
Polyamide
done
clear
View Answer play_arrow
Agarose extracted from sea weeds find use in:
A)
Tissue culture
done
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B)
PCR
done
clear
C)
Spectrophotometry
done
clear
D)
Gel electrophoresis
done
clear
View Answer play_arrow
Of the total solar radiation, the proportion of PAR is:
A)
Less than 50%
done
clear
B)
More than 80%
done
clear
C)
About 60%
done
clear
D)
Abount 70%
done
clear
View Answer play_arrow
Secondary sewage treatment is mainly a:
A)
Chemical process
done
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B)
Physical process
done
clear
C)
Biological process
done
clear
D)
Mechanical process
done
clear
View Answer play_arrow
Which of the following is mainly produced the activity of anaerobic bacteria on sewage:
A)
Musturd gas
done
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B)
Marsh gas
done
clear
C)
Laughing gas
done
clear
D)
Propane
done
clear
View Answer play_arrow
Nucellar polyembryony is reported in species of:
A)
Triticum
done
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B)
Citrus
done
clear
C)
Brassica
done
clear
D)
Gossypium
done
clear
View Answer play_arrow
Nitrifying bacteria:
A)
Reduce nitrates to free nitrogen
done
clear
B)
Oxidise ammonia to nitrates
done
clear
C)
Convert free nitrogen to nitrogen compound
done
clear
D)
Convert proteins into ammonia.
done
clear
View Answer play_arrow
Cultivation of trees and shrubs:
A)
Horticulture
done
clear
B)
Arboriculture
done
clear
C)
Aquaculture
done
clear
D)
Pisciculture
done
clear
View Answer play_arrow
Mastology is the study of:
A)
Joints
done
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B)
Mammals
done
clear
C)
Muscles
done
clear
D)
Breasts
done
clear
View Answer play_arrow
Virus multiplies in:
A)
Soil
done
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B)
Living tissue
done
clear
C)
Dead tissue
done
clear
D)
Culture medium
done
clear
View Answer play_arrow
AIDS virus contain:
A)
DNA only
done
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B)
DNA without protein
done
clear
C)
RNA with protein
done
clear
D)
DNA + protein
done
clear
View Answer play_arrow
Retting of fibre is caused by:
A)
Anabaena
done
clear
B)
Nostoc
done
clear
C)
Clostridium
done
clear
D)
Nitrobacter
done
clear
View Answer play_arrow
Osmotrops are:
A)
Fungi
done
clear
B)
Bacteria
done
clear
C)
Algae
done
clear
D)
Both a and b
done
clear
View Answer play_arrow
Seaweed dermatitis is caused by:
A)
Lingbya
done
clear
B)
Microcytic
done
clear
C)
Aulosira
done
clear
D)
Tolypothrix
done
clear
View Answer play_arrow
'Taq' was isolated from:
A)
Cellulose
done
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B)
E. coli
done
clear
C)
Thermus aquatics
done
clear
D)
Stirred tank
done
clear
View Answer play_arrow
What is function of nuclease and proteases in blood:
A)
Blood clot
done
clear
B)
Filteration
done
clear
C)
Preventing from bacteria
done
clear
D)
None of above
done
clear
View Answer play_arrow
The SCID patients cannot produce the following cells:
A)
T - lymphocytes
done
clear
B)
RBCs
done
clear
C)
Thrombocytes
done
clear
D)
Mast cells
done
clear
View Answer play_arrow
Identify the plasmid:
A)
EcoRI
done
clear
B)
pBR322
done
clear
C)
AIUI
done
clear
D)
Hind III
done
clear
View Answer play_arrow
The 'cry' gene is:
A)
Virus resistance
done
clear
B)
Insect resistance
done
clear
C)
Bacterial resistance
done
clear
D)
All of the above
done
clear
View Answer play_arrow
Turmeric is an type of:
A)
Shrubs
done
clear
B)
Trees
done
clear
C)
Hurbs
done
clear
D)
None of the above
done
clear
View Answer play_arrow
The following disease is an auto immun disease:
A)
Multiple sclerosis
done
clear
B)
Malaria
done
clear
C)
Tetanus
done
clear
D)
Cholera
done
clear
View Answer play_arrow
Diseases resistance is obtained through:
A)
Colchicine treatment
done
clear
B)
X - ray treatment
done
clear
C)
Crossing with build variety
done
clear
D)
Hormone treatment
done
clear
View Answer play_arrow
Manmade crop Triticale is a hybrid between
A)
Wheat and rye
done
clear
B)
Maize and rye
done
clear
C)
Rice and barley
done
clear
D)
Wheat and rice
done
clear
View Answer play_arrow
Baculoviruses of genes nucleopolyhedroviruj are used to:
A)
Kill moth
done
clear
B)
Kill pests
done
clear
C)
Kill weeds
done
clear
D)
Kill insects
done
clear
View Answer play_arrow
Anabaena azoldae lives in the leaves of:
A)
Fern
done
clear
B)
Spores
done
clear
C)
Mycorrhizae
done
clear
D)
Bacteria
done
clear
View Answer play_arrow
Lysozyme are used to:
A)
To break fungal cell
done
clear
B)
To break plant cell
done
clear
C)
To break open bacterial cell
done
clear
D)
None of these
done
clear
View Answer play_arrow
Medulla oblongata contains centres which control:
A)
Gastric secreation
done
clear
B)
Respiration
done
clear
C)
Cardiovascular reflexes
done
clear
D)
All of the above
done
clear
View Answer play_arrow
Which one is the spinal nerve?
A)
Hypoglossal
done
clear
B)
Olfactory
done
clear
C)
Trigeminal
done
clear
D)
None of the above
done
clear
View Answer play_arrow
Which is unique about human?
A)
Tool use
done
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B)
Free hand
done
clear
C)
Social setup
done
clear
D)
Articulated speech
done
clear
View Answer play_arrow
Focal length of eye lens is changes by:
A)
Pupil
done
clear
B)
Iris
done
clear
C)
Cornea
done
clear
D)
Ciliary body
done
clear
View Answer play_arrow
To prevent clotting, donor's blood is treated with:
A)
Heparin
done
clear
B)
Sodium glycocholate
done
clear
C)
Sodium citrate
done
clear
D)
Sodium taurocholate
done
clear
View Answer play_arrow
Root pressure is due to:
A)
Passive absorptmon
done
clear
B)
Active absorption
done
clear
C)
Increased transpiration
done
clear
D)
Increased photosynthesis
done
clear
View Answer play_arrow
Strobilanthus kunthiana was not found in:
A)
Kerala
done
clear
B)
Karnataka
done
clear
C)
Odissa
done
clear
D)
Tamil Nadu
done
clear
View Answer play_arrow
The double fertilization process was first discovered in which plant:
A)
Lily
done
clear
B)
Cucurbita
done
clear
C)
Monotropa
done
clear
D)
Cavarinas
done
clear
View Answer play_arrow
The hormone stimulate the leydig cells to secrete androgen like testosterone:
A)
LH
done
clear
B)
ICSH
done
clear
C)
FSH
done
clear
D)
Both a and b
done
clear
View Answer play_arrow
The ovules are of how many types or forms:
A)
1
done
clear
B)
2
done
clear
C)
3
done
clear
D)
4
done
clear
View Answer play_arrow
Wind pollinated flowers generally have stigma:
A)
Long
done
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B)
Feathery
done
clear
C)
Branched
done
clear
D)
All of the above
done
clear
View Answer play_arrow
Sperm lysins contain an epzyme called hyaluronidase which secretes:
A)
Hyaluromc acid
done
clear
B)
Acrosin
done
clear
C)
Hyaluronic salt
done
clear
D)
Zonalysin
done
clear
View Answer play_arrow
The maternal part of the placenta is called:
A)
Chorion
done
clear
B)
Decidua basalis
done
clear
C)
Haemochorial
done
clear
D)
Ultrafilter
done
clear
View Answer play_arrow
Lippes loop is a type of IUD of which generation:
A)
First
done
clear
B)
Second
done
clear
C)
Third
done
clear
D)
None of these
done
clear
View Answer play_arrow
Which type of thalassaemia does not affect the globin chain:
A)
\[\alpha \]- thalassaemia
done
clear
B)
\[\beta \] - thalassaemia
done
clear
C)
\[\delta \] - thalassaemia
done
clear
D)
Both a and b
done
clear
View Answer play_arrow
Female condoms are prehibricated by:
A)
Silicon
done
clear
B)
Spermicide
done
clear
C)
Deluxe
done
clear
D)
Both a and b
done
clear
View Answer play_arrow
This occur during:
A)
Meiosis II
done
clear
B)
Prophase I of meioss
done
clear
C)
Metaphase
done
clear
D)
Telophase
done
clear
View Answer play_arrow
A gamete contain:
A)
Both alleles of yene
done
clear
B)
Only one alleles of gene
done
clear
C)
All alleles of gene
done
clear
D)
Many alleles of gene
done
clear
View Answer play_arrow
What is P - wave in standard ECG given below represents:
A)
Electrical excitation
done
clear
B)
Depolarisation of the ventricles
done
clear
C)
Repolarisation
done
clear
D)
End of systole
done
clear
View Answer play_arrow
Glucose is converted into glucose - 6 - phosphate by the enzyme:
A)
Invertase
done
clear
B)
Dehydrogenase
done
clear
C)
Hexokinase
done
clear
D)
Maltase
done
clear
View Answer play_arrow
Match the columns:
Column 1 Column 2 A. Limbless reptile (i) Snake B. Amphibian (ii) Ostrich C. Flightless bird (iii) Salamander D. Cartilaginous (iv) Shark E. Jawless vertebrate (v) Lamprey
A)
A - i, B - ii, C - iii, D - iv, E - v
done
clear
B)
A - v, B - iii, C - ii, D - iv E - i
done
clear
C)
A - i, B - iii, C - ii, D - iv, E - V
done
clear
D)
A - i, B - iii, C - V, D - iv, E - ii
done
clear
View Answer play_arrow
Scientific name of onion is:
A)
Allium cepa
done
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B)
Solanum tuberosum
done
clear
C)
Allium cegga
done
clear
D)
Pisum sativum
done
clear
View Answer play_arrow
Modified stem is:
A)
Pea
done
clear
B)
Ginger
done
clear
C)
Onion
done
clear
D)
Garlic
done
clear
View Answer play_arrow
In dicot stems, the cells of cambium present between primary xylem and primary phloem is the:
A)
Cork cambium
done
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B)
Interfasicular cambium
done
clear
C)
Secondary xylem
done
clear
D)
Intrafasicular cambium
done
clear
View Answer play_arrow
Name the duct which open under the tongue:
A)
Stenson's duct
done
clear
B)
Rivinian ducts
done
clear
C)
Wharton's ducts
done
clear
D)
Parotid
done
clear
View Answer play_arrow
Vital capacity of lung is:
A)
\[3.54.5\ell \]
done
clear
B)
\[4.55.5\ell \]
done
clear
C)
\[2.53.9\ell \]
done
clear
D)
\[1.52.5\ell \]
done
clear
View Answer play_arrow
Jugular vein present in:
A)
Heart
done
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B)
Chest
done
clear
C)
Head
done
clear
D)
Oesophagus
done
clear
View Answer play_arrow
The third ventricle of brain is situated in:
A)
Base of telencephalon
done
clear
B)
Roof of metencephalon
done
clear
C)
Below roof of diencephalon
done
clear
D)
Base of myelencephalon
done
clear
View Answer play_arrow
Which of the following terms represent a pair of contrasting character:
A)
Allelomorphs
done
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B)
Homozygous
done
clear
C)
Heterozygous
done
clear
D)
Coccus
done
clear
View Answer play_arrow
What is the full form of HFr strain:
A)
High frequency recombination
done
clear
B)
Heigh frequency recombination
done
clear
C)
High functional recombination
done
clear
D)
High frequency reduction
done
clear
View Answer play_arrow
A chromosome which has centromere near the end is called:
A)
Metacentric
done
clear
B)
Sub - metacentric
done
clear
C)
Acrocentric
done
clear
D)
Telocentric
done
clear
View Answer play_arrow
According to the chromosome theory:
A)
Mendelian factors are present on the chromosomes
done
clear
B)
Mendelian factors is callegene
done
clear
C)
Linked genes do assort independently
done
clear
D)
Crossing over occurs between the genes
done
clear
View Answer play_arrow
In radioactive phages gets incorporated in:
A)
Protein coat
done
clear
B)
DNA
done
clear
C)
Both protein and DNA
done
clear
D)
Rhizoid fibres
done
clear
View Answer play_arrow
All the terminator codons begin with:
A)
Adenine
done
clear
B)
Cytosine
done
clear
C)
Uracil
done
clear
D)
Guanine
done
clear
View Answer play_arrow
Which fossil show both the features of birds and reptiles:
A)
Petrific
done
clear
B)
Keel
done
clear
C)
Urchin
done
clear
D)
Archaeopteryx
done
clear
View Answer play_arrow
Anthropoid apes were ancestors of:
A)
Only monkeys
done
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B)
Only apes
done
clear
C)
Monkey and apes
done
clear
D)
Monkey, apes and humans
done
clear
View Answer play_arrow
Full form of DES was:
A)
Diethylsbestrol
done
clear
B)
Diethylstibestrol
done
clear
C)
Diethyl-S-bestrol
done
clear
D)
Diethysonabestrol
done
clear
View Answer play_arrow
Coacervates are clusters of:
A)
Proteins
done
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B)
Sugar
done
clear
C)
Fats
done
clear
D)
Sugar and fats
done
clear
View Answer play_arrow
Mumps and measles diseases both are cause by:
A)
Retrovirus
done
clear
B)
Paramyxovirus
done
clear
C)
Varicella virus
done
clear
D)
\[{{H}_{1}}{{N}_{1}}\]virus
done
clear
View Answer play_arrow
Hallucinogens also known as:
A)
Tranquilizers
done
clear
B)
Psychedelic
done
clear
C)
Barbiturates
done
clear
D)
Sedatives
done
clear
View Answer play_arrow
The cork cambium, cork and secondary cortex are collectively called:
A)
Phelloderm
done
clear
B)
Phellem
done
clear
C)
Phellogen
done
clear
D)
Periderm
done
clear
View Answer play_arrow
Kidneys are metanephric in case of:
A)
Frog
done
clear
B)
Mammals
done
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C)
Pisces
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D)
Reptiles
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What is common among parrot, platypus and kangaroo:
A)
Oviparity
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B)
Viv parity
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C)
Homoeothermic
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D)
Toothless jaws
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Corpus callosum occurs in the brain of:
A)
Pigeon
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B)
Frog
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C)
Elephant
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D)
Crocodile
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E.R is made of:
A)
Cisternal
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B)
Tubules
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C)
All of the above
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D)
Vesicles
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Secondary lysosome are:
A)
Residual vacuoles
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B)
Autophagic vacuoles
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C)
Digestive vacuoles
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D)
All of the above
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Pattern of organization of eukaryotic cilia and flagella is:
A)
9+3
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B)
9+1
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C)
9+2
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D)
9+0
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Present in the nucleolus:
A)
Lysosomes
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B)
Mitochondria
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C)
Golgi complex
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D)
Chromosome
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EMP pathway is also known as:
A)
Fermentation
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B)
Glycolysis
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C)
Krebs' cycle
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D)
none of these
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One molecule of \[FAD{{H}_{2}}\]produces:
A)
3 ATP
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B)
4 ATP
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C)
2 ATP
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D)
1 ATP
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Symbiotic microorganism present in a:
A)
Colon
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B)
Rectum
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C)
Caecum
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D)
Cardiac
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Human excreted urea per day:
A)
25-35 gm
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B)
30-35 gm
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C)
40-45 gm
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D)
25-30 gm
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Hormone responsible for spermatogenesis is:
A)
ACTH
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B)
FSH
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C)
MSH
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D)
TSH
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Hyperthyroidism occur due to:
A)
Deficiency of Iodine
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B)
Improper diet
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C)
Cancer of the thyroid gland
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D)
Deficiency of vitamin
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Oligotrophic soils contains:
A)
Low nutrient
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B)
High nutrient
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C)
Less oxygen
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D)
High phosphorus
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Which of the following is most common tree species in Indian tropical rain forest:
A)
Dipterocarpus
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B)
Shorea robuster
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C)
Acaci
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D)
Overcus
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Which species of tree is found in Temperate needle - leaf forests:
A)
Shorea robusta
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B)
Quercus
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C)
Cedrus deodara
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D)
Dipteorcarpus
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Plants adapted to shade or low intensity of light:
A)
Heliophytes
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B)
Hydrophytes
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C)
Sciophytes
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D)
Ephemerals
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The terminal stage of succssium is represented by:
A)
Mosses
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B)
Climax community
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C)
Shrubs
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D)
Late successional species
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The exotic species introduced into lake victoria was:
A)
Cichild fish
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B)
Nile perch
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C)
Lantana camara
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D)
Lotus
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So far, the number of 'hotspots' region of identified in India are:
A)
2
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B)
3
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C)
4
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D)
6
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Photochemical smog is mainly composed of:
A)
\[C{{O}_{2}}\]
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B)
\[S{{O}_{2}}\]
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C)
\[PAN\And N{{C}_{X}}\]
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D)
\[Ozone,PAN\And N{{O}_{X}}\]
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What is the full form of VOC:
A)
Volatile oxygen - carbon
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B)
Volatile organic carbon
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C)
Volatile oxygen - carcinogen
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D)
Volatile organic carbon
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An edible fruit of family solanaceae is:
A)
Capsicum
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B)
Withania
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C)
Physalis
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D)
Hyoscyamus
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Floral formula
is that of:
A)
Soyabean
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B)
Tulip
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C)
Tobacco
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D)
Sun hemp
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