The thermodynamic law, PVy = constant, is not applicable in case of (A) Ideal compression of air
(B) Free expansion of an ideal gas
(C) Adiabatic expansion of steam in a turbine
(D) Adiabatic compression of a perfect gas
(B) Free expansion of an ideal gas
(C) Adiabatic expansion of steam in a turbine
(D) Adiabatic compression of a perfect gas