Question

Which of the following is constant in an isochoric process

• A. pressure
• B. volume
• C. temperature
• D. none of these

Answer 1

The correct option is B volume

Isochoric process is the process that occurs at constant volume. In other words the change in volume is zero.

$\Delta V=0$

Thus, the work done in an isochoric process $dW=P.dV=0$ and

The heat supplied during the process $dQ=dU=n{C}_v\Delta T$.

Thus, in an isochoric process, we see that the volume is constant and work done is zero. There is only a change in the internal energy of the gas.