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Entropy

Entropy of a ...

Question

Entropy of a substance remains constant during a/an __________ change.

A

irreversible isothermal

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B

reversible adiabatic

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C

reversible isothermal

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D

none of these

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Solution

The correct option is B reversible adiabatic
In thermodynamics, an isoentropic process is an idealized thermodynamic process that is adiabatic and in which the work transfers of the system are frictionless; there is no transfer of heat or matter and the process is reversible. Hence, Entropy of a substance remains constant during reversible adiabatic change.

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