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Discussion :: Chemical Engineering Thermodynamics

  1. Pick out the wrong statement.

  2. A.

     The net change in entropy in any reversible cycle is always zero

    B.

     The entropy of the system as a whole in an irreversible process increases

    C.

     The entropy of the universe tends to a maximum

    D.

     The entropy of a substance does not remain constant during a reversible adiabatie change

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    Answer : Option D

    Explanation :

    We know for reversible process TdS=δQ   and since in adiabatic process δQ=0⇒TdS=0
    So reversible adiabatic process is an isentropic process.


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