39. A box contains a mixture of

H₂ and He gases. Which of the following statements are corrects

(a)  The average translational kinetic energies of H₂  molecules and He atoms are same

(b)  The average energies of H₂   molecules and He  atoms are same

(c)   H₂   molecules have greater average energy than that of He  atoms

(d)  The average speed of H₂  molecules and He  atoms are same

Answer-a,c

(31)