Chemistry Question Bank

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)

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

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

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

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

In a closed room of 1000 m3, a perfume bottle is opened up. The whole room develops smell. This is due to which property of gases ?

A certain gas effuses through a small opening of a vessel at a rate which is exactly one-fifth the rate at which helium does the same. Thus, the molecular weight of the gas is

The relative rate of diffusion of helium w.r.t. methane under similar conditions of pressure and temperature is

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

Which of the following gas will have highest rate of diffusion?

If some moles of O2 diffuse in 18 sec and same moles of other gas diffuse in 45 sec then what is the molecular weight of the unknown gas? (a) 18 x (b) 45 x (c) x (d) x

When r, P and M represent rate of diffusion, pressure and molecules mass, respectively, the ratio of the rate of diffusion (rA/rB) of two gases A and B, is given as

2 moles of each H ,SO and CH are kept in a container. A hole was made in the container. After 30 min, the order of partial pressure in the container will be (a) SO CH H P P P (b) H SO CH P P P (c) H CH SO P P P …

If the ratio of the rates of diffusion of two gases. A and B is 2:1, the ratio of their densities is

If the ratio of the rates of diffusion of two gases. A and B is 4:1, the ratio of their densities is

The atomic weight of C, N and O are 12, 14 and 16 respectively. Among the following pair of gases, which will diffuse at the same rate?