The ratio $C_p/C_v$ for a gas mixture consisting of $8\ g$ of helium and $16\ g$ of oxygen is

$P-V$ plots for two gases during adiabatic processes are shown in the figure. Plots $1$ and $2$ should correspond respectively to

In an adiabatic change, the pressure $P$ and temperature $T$ of a diatomic gas are related by the relation $P \propto {T^C}$, where $C$ equal to

A thermally insulated vessel contains an ideal gas of molecular mass $M$ and ratio of specific heats $\gamma $. It is moving with speed $v$ and its suddenly brought to rest. Assuming no heat is lost to the surroundings, its temperature` increases by

A gas deviates maximum from the ideal gas law at