The expression for entropy change given by, ΔS = - nR ln (P2/P1), holds good for
(A) Expansion of a real gas
(B) Reversible isothermal volume change
(C) Heating of an ideal gas
(D) Cooling of a real gas
(A) Expansion of a real gas
(B) Reversible isothermal volume change
(C) Heating of an ideal gas
(D) Cooling of a real gas