The interaction energy of London forces between two particles is proportional to r^x, where r is the distance between the particles. The value of x is :

A mixture of one mole each of H₂ , He and O₂ each are enclosed in a cylinder of volume V at temperature T. If the partial pressure of H₂ is 2 atm, the total pressure of the gases in the cylinder is :

Which one of the following graphs is not correct for ideal gas?


d = Density, P = Pressure, T = Temperature

Identify the correct labels of A,B and C in the following graph from the options given below :


Root mean square speed (V_rms); most probable speed (V_mp); Average speed (V_av)