States of Matte...

The volume of a gas is ______ when the pressure is reduced to half and the absolute temperature is doubled.

If the velocity of an electron in the second orbit of the hydrogen atom is x, the velocity in fourth orbit will be:

Which of the following pair of gases cannot be separated by diffusion method?

Statement I
The volume of a gas at 100 deg C and 600 mmHg will be lower at STP
Because
Statement II
Decreasing temperature and increasing pressure will cause the volume of a gas to decrease

The value of the Avogadro constant is:

Which statement is NOT compatible with the ideal gas law?

Which gas law uses pressure, number of moles, temperature, volume and the gas constant (R)?

Statement I: In the kinetic theory of gases, collisions between gas particles and the walls of the container are considered elastic.
Statement II: Gas molecules are considered pointlike, volumeless particles with no intermolecular forces and in constant, random motion.

Two gases A and B are taken in same volume containers under similar conditions of temperature and pressure. In container A, there are '2N' molecules of gas A. How many number molecules does container B have? 

The initial pressure inside the flask is: