Chemistry Question Bank

Pure hydrogen sulphide is stored in a tank of 100 litre capacity at 20ºC and 2 atm pressure. The mass of the gas will be

The pressure of a 1:4 mixture of dihydrogen and dioxygen enclosed in a vessel is one atmosphere, what would be the partial pressure of dioxygen? (a) 0.8 10 atm x

Same amount of hydrogen H2(g) and CH4(g) are mixed in a vessel at 25oC. The fraction of the total pressure exerted by hydrogen is

A close vessel contains equal number of nitrogen and oxygen molecules at a pressure of P mm. If nitrogen is removed from the system, then the pressure will be

If three unreactive gases having partial pressures PA, PB and PC and their moles are 1, 2, and 3 respectively then their total pressure will be :

Which of the following mixtures of gases does not obey Dalton’s law of partial pressure ?

3.2 g of oxygen (At. wt. = 16) and 0.2 g of hydrogen (At. wt. = 1) are placed in a 1.12 litre flask at 0ºC. The total pressure of the gas mixture will be

The ratio of partial pressure of a gaseous component to the total vapour pressure of the mixture is equal to

Equal weights of two gases of molecular weight 4 and 40 are mixed. The pressure of the mixture is 1.1 atm. The partial pressure of the light gas in this mixture is

16 gm of oxygen and 3 gm of hydrogen are mixed and kept in 760 mm presusre at 0oC. The total volume occupied by the mixture will be nearly

A cylinder is filled with a gaseous mixture containing equal masses of CO and N2. The partial pressure ratio is : (a) N CO P P (b) CO N P 0.875 P (c) CO N P 2 P (d) CO N P 1/ 2 P

Equal weights of ethane and hydrogen are mixed in an empty container at 25ºC. The fraction of the total pressure exerted by hydrogen is

Equal weights of methane and hydrogen are mixed in an empty container at 25ºC. The fraction of the total pressure exerted by hydrogen 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

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

Rate of diffusion of a gas is

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

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

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

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…

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 …

Pressure of a gas is due to

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