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  1. What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor?

  2. A.

     2

    B.

     0

    C.

     3

    D.

     1

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  3. The first law of thermodynamics is a restatement of the law of conservation of

  4. A.

     Mass

    B.

     Energy

    C.

     Momentum

    D.

     None of these

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  5. Entropy of the system decreases, when

  6. A.

     Snow melts into water

    B.

     A gas expands spontaneously from high pressure to low pressure

    C.

     Water is converted into ice

    D.

     Both B & C

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  7. The second law of thermodynamics states that

  8. A.

     The energy change of a system undergoing any reversible process is zero

    B.

     It is not possible to transfer heat from a lower temperature to a higher temperature

    C.

     The total energy of system and surrounding remains the same

    D.

     None of the above

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  9. If we increase the pressure on a substance (which is at its triple point), then the triple point

  10. A.

     Increases

    B.

     Decreases

    C.

     Remains unchanged

    D.

     May increase or decrease ; depends on the substance

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  11. Maximum work that could be secured by expanding the gas over a given pressure range is the __________ work.

  12. A.

     Isothermal

    B.

     Adiabatic

    C.

     Isentropic

    D.

     None of these

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  13. The fusion of a crystalline solid at its melting point to form a liquid at the same temperature is accompanied by

  14. A.

     Decrease in enthalpy corresponding to evolution of heat

    B.

     Decrease of entropy

    C.

     Increase in enthalpy corresponding to absorption of heat

    D.

     No change in enthalpy

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  15. The minimum number of phases that can exist in a system is

  16. A.

     0

    B.

     1

    C.

     2

    D.

     3

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  17. Extensive properties of a thermodynamic system depend upon the __________ of the system.

  18. A.

     Specific volume

    B.

     Temperature

    C.

     Mass

    D.

     Pressure

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  19. Van Laar equation deals with the activity co-efficients in

  20. A.

     Binary solutions

    B.

     Ternary solutions

    C.

     Azeotropic mixture only

    D.

     None of these

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