If $\frac{R}{C_v} = 0.67$,identify the gas.

Select the incorrect relation. (Where symbols have their usual meanings)

What will be the molar specific heat at constant volume of an ideal gas consisting of rigid diatomic molecules?

When $40 \ J$ of heat is absorbed by a monatomic gas,the increase in the internal energy of the gas is (in $J$)

The molar specific heat at constant pressure of an ideal gas is $\frac{7}{2} R$. The gas is made up of molecules which are ( $R$ is the universal gas constant)

The difference between the two specific heats of $1\, g$ of helium gas at $NTP$ is .... $cal\, g^{-1} K^{-1}$. (Atomic weight of helium $= 4$ and $J = 4.186 \times 10^7\, erg\, cal^{-1}$)