Isentropic process means a constant __________ process.

Isentropic process means a constant __________ process. Correct Answer Entropy

Isentropic process is the process where entropy(s) remains constant. So, $$ds = 0$$
Generally, $$ds$$ $$ = \frac{{\delta Q}}{T}$$   for reversible process, so for reversible adiabatic process $$ds = 0$$
Hence, reversible adiabatic process is called isentropic process.
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