Chemistry Question Bank

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

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

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

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

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 ?

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?

A gaseous mixture is the mixture of 2 moles of A and 3 moles of B. Total pressure of the mixture is 5 atm. What is the partial pressure of A and B respectively?

If a gas expands at constant temperature, it indicates that

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 ?

In a mixture of gases, the pressure exerted by the individual gas is called

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

Based on kinetic theory of gases following laws can be proved

According to kinetic theory of gases, for a diatomic molecule

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

Which is not true in case of an ideal gas ?

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

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.

Root mean square velocity of a gas molecule is proportional to

The density of neon will be highest at

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

The term that corrects for the attractive forces present in a real gas in the van der Waals’ equation is

The value of Van der Waal’s constant ‘a’ for the gases O2, N2, NH3 and CH4 are 1.360, 1.390, 4.170 and 2.253L2 atm mol–2 respectively. The gas which can most easily be liquified is

For an ideal gas, number of moles per litre in terms of its pressure P, temperature T and gas constant R is

In Van der Waal’s equation of state for a non-ideal gas, the term that accounts for intermolecular forces is

The closed containers of the same capacity and at the same temperature are filled with 44g of H2 in one and 44g of CO2 in the other. If the pressure of carbon dioxide in the second container is 1 atm. That of hydrogen…