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  1. The Maxwell relation derived from the differential expression for the Helmholtz free energy (dA) is

  2. A.

     (∂T/∂V)S = -(∂P/∂S)V

    B.

     (∂S/∂P)T = -(∂V/∂T)P

    C.

     (∂V/∂S)P = (∂T/∂P)S

    D.

     (∂S/∂V)T = (∂P/∂T)V

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  3. Which of the following processes can not be made reversible even under ideal condition of operation?

  4. A.

     Free expansion of a gas

    B.

     Compression of air in a compressor

    C.

     Expansion of steam in a turbine

    D.

     All of the above

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  5. Heat is added at constant pressure in an ideal __________ cycle.

  6. A.

     Stirling

    B.

     Brayton

    C.

     Rankine

    D.

     Both B and C

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  7. Heat is added at constant temperature in an ideal __________ cycle.

  8. A.

     Stirling

    B.

     Brayton

    C.

     Rankine

    D.

     None of these

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  9. The standard state of a gas (at a given temperature) is the state in which fugacity is equal to

  10. A.

     Unity

    B.

     Activity

    C.

     Both A & B

    D.

     Neither A nor B

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  11. For a constant volume process __________ by the system is used only to increase the internal energy.

  12. A.

     Heat absorbed

    B.

     Work done

    C.

     Both A & B

    D.

     Neither A nor B

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  13. Which of the following is not a common refrigerant?

  14. A.

     Freon-12

    B.

     Ethylene

    C.

     Ammonia

    D.

     Carbon dioxide

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  15. Which of the following is not a reversible process ?

  16. A.

     Expansion of an ideal gas against constant pressure

    B.

     Atmospheric pressure vaporisation of water at 100°C

    C.

     Solution of NaCl in water at 50°C

    D.

     None of these

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  17. For spontaneous changes in an isolated system (S = entropy)

  18. A.

     Ds = 0

    B.

     Ds <0

    C.

     Ds > 0

    D.

     Ds = Constant

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  19. A gas performs the maximum work, when it expands

  20. A.

     Non-uniformly

    B.

     Adiabatically

    C.

     Isobarically

    D.

     Isothermally

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