Chemistry Question Bank

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

As the temperature is raised from 20ºC to 40ºC, the average kinetic energy of neon atoms changes by a factor of which of the following ?

If a gas expands at constant temperature, it indicates that

Consider three one-litre flasks labeled A, B and C filled with the gases NO, NO2, and N2O, respectively, each at STP. In which flask do the molecules have the highest average kinetic energy?

At what temperature will the molar KE of 0.3 mol of He be the same as that of 0.4 mol of argon at 400 K ?

Which one of the following is not a correct postulate of kinetic theory of gases ?

The kinetic theory of gases predicts that total kinetic energy of a gaseous assembly depends on

The kinetic energy for 14 grams of nitrogen gas at 127ºC is nearly (mol. mass of nitrogen = 28 and gas constant = 8.31 JK–1 mol–1)

Pressure of a gas is due to

According to kinetic theory of gases, I. Collision are always elastic. II. Heavier molecules transfer more momentum to the wall of container. III. Only a small number of molecules have very high velocity. IV. Between …

The shape of gases is not fixed because I. Collisions of gas molecules are perfectly elastic. II. Particles of a gas are always in constant and random motion. III. Gases are highly compressible. Choose the correct opt…

Gases expand and occupy all the space available to them. Which of the following assumption explain this behavior correctly?

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

The theory that attempts to elucidate the behavior of gases is known as …I… of gases. Here, I refer to

Rate of diffusion of a gas is

A bottle of dry ammonia and a bottle of dry hydrogen chloride connected through a long tube are opened simultaneously at both ends, the white ammonium chloride ring first formed will be :

The rate of diffusion of methane at a given temperature is thrice that of a gas X. The molecular weight of X is

When T, P, and M represent rate of diffusion pressure and molecules mass, respectively, the ratio of the rate of diffusion / A B T T of two gases A and B, is given as

If helium and methane are allowed to diffuse out of the container under the similar conditions of temperature and pressure, then the ratio of rate of diffusion of helium to methane is

A bottle of ammonia and a bottle of dry hydrogen chloride connected through a long tube are opened simultaneously at both ends, the white ammonium chloride ring first formed will be