Chemistry - Thermodynamics - I Question with Solution | TestHub

The net work done in any cyclic process (reversible or irreversible) is generally NOT zero. For a cyclic process, the change in internal energy ($\Delta U$) is zero. From the First Law of Thermodynamics, $\Delta U=Q-W$. Since $\Delta U=0$, it implies $Q=W$. Thus, the net heat exchanged equals the net work done. Therefore, the net work done is zero only if the net heat exchanged is also zero.

The correct answer is D.