An isochoric process is defined as taking place at what condition?

An isochoric process is characterized by the condition of constant volume. In this type of thermodynamic process, the volume of the system does not change, no matter how the pressure or temperature may vary. Consequently, if heat is added to or removed from the system, it will result in changes in pressure or temperature to maintain that constant volume.

In thermodynamics, processes are often classified based on which state variables remain unchanged. While some processes involve constant pressure (isobaric), constant temperature (isothermal), or constant entropy (adiabatic), the defining feature of isochoric processes is the unchanging volume. When studying thermodynamic processes, it's essential to understand these distinctions, as they significantly affect the behavior and characteristics of the system under study.