Question

Which of the following is zero during adiabatic expansion of an ideal gas?

• A. $\Delta$$T$
• B. $\Delta$$S$
• C. $\Delta$$U$
• D. $\Delta$$U$

Answer 1

The correct option is B $\Delta$$S$

For adiabatic expansion $q=0$, Then according to the following relation
$\Delta$ $S=$$\frac{q_{rev}}{T}$
so, $\Delta$$S$=$0$