Entropy of a substance remains constant during a/an ____________ change?
Correct answer: B. Reversible adiabatic
- A. Reversible isothermal
- B. Reversible adiabatic
- C. Irreversible isothermal
- D. None of these
Explanation
A reversible adiabatic process has no entropy transfer by heat and no entropy generation, so its entropy remains constant and it is called isentropic. An isothermal process has constant temperature, not necessarily constant entropy.
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