The number of degrees of freedom for a diatomic gas molecule is:

A gas at one atmosphere and having volume 100 ml is mixed with another gas of equal moles at 0.5 atm and having volume 50 ml in flask of one litre, what is the final pressure?

If an ideal gas has volume V at 27⁰C and it is heated at a constant pressure, so that its volume becomes 1.5 V, then the value of final temperature is:

A container has N molecules at absolute temperature T.  If the number of molecules is doubled but kinetic energy in the box remains the same, the absolute temperature of the gas is

The speeds of 5 molecules of a gas (in arbitrary units) are 2,3,4,5,6.The root mean square speed for these molecules is

One mole of monoatomic gas and three moles of diatomic gas are put together in a container. The molar specific heat (in JK^-1mol^-1) at constant volume (R=8.3 JK^-1mol^-1) is:

 Identify the correct relation  for the slope at any point on the curve in PV graph for a gas ?

Air is filled at 60^o C in a vessel with open mouth.  The vessel is heated to a temperature T so that 1/4th part of air escapes.  Assuming the volume of vessel remains constant, the value of T is

The temperature of a gas is held constant, while its volume is decreased. The pressure exerted by the gas on the walls of the container increases, because its molecules:

The mean free path of collision of gas molecules varies with its diameter (d) of the molecules as: