Select incorrect statement(s)

Options

A. A closed system with all adiabatic boundaries must be an isolated system
B. Total heat exchange in a cyclic process may be zero
C. Entropy of a closed system is maximum at equilibrium
D. Molar Gibb's Energy is an extensive property

Answer

A, C, D

Explanation

(a) In isolated system no change possible
(b) `DeltaU=q+w=0implies q=-w`
w may be zero so q may be zero.
(c ) Entropy of a closed system is not maximum at equilibrium.
(d) Intensive properties.