19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
In van der Waals equation of state of the gas law, the constant ‘b’ is a measure of
The units of the van der Waal’s constant ‘b’ are
The units of the van der Waal’s constant ‘a’ are
Van der Waals constants ‘a’ and ‘b’ are related with..... respectively.
a and b are van der Waals constants for gases. Chlorine is more easily liquefied than ethane because
A gas will approach ideal behaviour at
In case of hydrogen and helium, the van der Waal’s forces are
Two separate bulbs contain ideal gases A and B. The density of gas A is twice that of gas B. The molecular mass of A is half that of gas B. The two gases are at the same temperature. The ratio of the pressure of A to …
Any gas shows maximum deviation from ideal gas at
For a gas deviation from ideal behaviour is maximum at :
The pressure of real gases is less than that of ideal gas because of
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