Chemistry Question Bank

For H2 gas, the compressibility factor, Z = PV/n RT is:

The compressibility of a gas is less than unity at STP. Therefore

At high pressure, all the gases have

Dominance of strong repulsive force among the molecules of the gas (Z = compressibility factor)

At what temperature most probable speed of O2 molecules have the same value of root mean square speed of O2 molecules at 300 K ?

The ratio between the root mean square velocity of H2 at 50 K and that of O2 at 800 K is

At 25oC temperature and 730 mm pressure, 380 mL of dry oxygen was collected. If the temperature is held constant, what volume will be oxygen occupy at 760 mm pressure?

The ratio of the root mean square velocity to average velocity of a gas molecule at a particular temperature is

A gas at 298 K is shifted from a vessel of 250 cm3 capacity to that of 1L capacity. The final pressure of the gas will

The density of gas A is four times that of gas B. If the molecular weight of A is M, then at same pressure and temperature molecular weight of B is

The density of CCl4 vapour at 0ºC and 76 cm Hg in g/litre is:

Which of the following gases would have the highest R.M.S. velocity at 25ºC ?

According to kinetic theory of gases, the root mean square velocity is directly proportional to

The temperature of the gas is raised from 27ºC to 927ºC, the root mean square velocity is (a) 927 / 27 times the earlier value

The root mean square speeds at STP for the gases H2, N2, O2 and HBr are in the order :

The ratio among most probable velocity, mean velocity and root mean square velocity is given by

Root mean square velocity of a gas molecule is proportional to

By which factor does the root mean square velocity of a gaseous molecule increases, when the temperature is increase from 273 K to 1092 K.

The rms speed of N2 Molecules in a gas sample can be changed by

Which is not true in case of an ideal gas ?

Helium atom is two times heavier than a hydrogen molecule .At 298 K, the average kinetic energy of a helium atom is

According to kinetic theory of gases, for a diatomic molecule

Based on kinetic theory of gases following laws can be proved

According to the kinetic theory of gases, in an ideal gas, between two successive collisions a gas molecule travels

The kinetic molecular theory of gases explains the behavior of gases at