Question

Which of the following is incorrect for a cyclic process ?

• A. $\Delta U=0$
• B. $\Delta H=0$
• C. $w=0$
• D. All of the above

Answer 1

The correct option is C $w=0$

For a cyclic process work done is not equal to zero , because work is not a state function, it depends on the path followed while other ($\Delta U$, $\Delta H$) are state functions. As the initial and final states are same in a cyclic process, the value of $\Delta U$, $\Delta H$ will be zero.