An experiment is carried on a fixed amount of gas at different temperatures and at high pressure such that it deviates from the ideal gas behaviour. The variation of $\frac{{PV}}{{RT}}$ with $P$ is shown in the diagram. The correct variation will correspond to

A gaseous mixture consists of $16\  g$ of helium and $16\  g$ of oxygen. The ratio $\frac{{{C_p}}}{{{C_v}}}$ of the mixture is

Two monoatomic ideal gas at temperature $T_1$ and $T_2$ are mixed. There is no loss of energy. If the masses of molecules of the two gases are $m_1$ and $m_2$ and number of their molecules are $n_1$ and $n_2$ respectively. The temperature of the mixture will be :

An inverted bell lying at the bottom of a lake $47.6\,m$ deep has $50\, cm^3$ of air trapped in it. The bell is brought to the surface of the lake. The volume of the trapped air will be …… $cm^3$ (atmospheric pressure $= 70\, cm$ of $Hg$ and density of $Hg = 13.6\, g/cm^3$)

A real gas behaves like an ideal gas if its