List of practice Questions

Shell of molluscs is derived from
In Whittaker?s system of classification, prokaryotes belong to the kingdom
In sea anemone, the symmetry is
Movements by pseudopodia of Amoeba are due to change in
Species can be identified on the basis of
"Bundle of His" are
Crossing over occurs in
The hybridisation state of carbon in fullerene is
Total volume of atoms present in a face centred cubic unit cell of a metal is ($r$ is atomic radius)
The set representing the correct order for first ionisation potential is
Heisenberg?s uncertainty principle can be explained as
Which of the following is not reducing sugar?
An atom bomb is based on the principle of
Which of the following circular rods, (given radius $r$ and length $l$) each made of the same material and whose ends are maintained at the same temperature will conduct most heat?
A stone of mass 0.3 kg attached to a 1.5 m long string is whirled around in a horizontal circle at a speed of 6 ms. The tension in the string is
A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of
A projectile is thrown in the upward direction making an angle of 60$^{\circ}$ with the horizontal direction with a velocity of 147 $ms^{ - 1}$ Then the time after which its inclination with the horizontal is 45$^{\circ}$, is
A ray is incident on a plane surface. If $\hat{i} + \hat{j} - \hat{k}$ represents a vector along the direction of incident ray.$\hat{i} + \hat{j} $ is a vector along normal on incident point in the plane of incident and reflected ray, then vector along the direction of reflected ray is
A circuit is made up of a resistance $1\, \Omega$ and inductance $0.01\, H$. An alternating emf of $200\, V$ at $50\,Hz$ is connected, then the phase difference between the current and the emf in the circuit is
A motor cycle is going on an overbridge of radius $R$. The driver maintains a constant speed. As the motor cycle is ascending on the overbridge, the normal force on it
A coil of inductance 300 mH and resistance 2 $\Omega$ is connected to a source of voltage 2 V. The current reaches half of its steady state value in
Hard X-rays for the study of fractures in bones should have a minimum wavelength of $10^{-11}$ m. The accelerating voltage for electrons in X-ray machine should be
Interference was observed in a chamber when air was present. Now, the chamber is evacuated and if the same light is used, a careful observation will show
A leaf which contains only green pigments, is illuminated by a laser light of wavelength 0.6328 mm. It would appear to be
The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane along the perpendicular direction. The direction of the induced current in the conducting plane will be