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  1. With increase in reduced temperature, the fugacity co-efficient of a gas at constant reduced pressure

  2. A.

     Increases

    B.

     Decreases

    C.

     Remains same

    D.

     Decreases linearly

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  3. In an isothermal process on an ideal gas, the pressure increases by 0.5 percent. The volume decreases by about __________ percent.

  4. A.

     0.25

    B.

     0.5

    C.

     0.75

    D.

     1

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  5. The temperature at which both liquid and gas phases are identical, is called the __________ point.

  6. A.

     Critical

    B.

     Triple

    C.

     Freezing

    D.

     Boiling

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  7. The variation of heat of reaction with temperature at constant pressure is given by the __________ law.

  8. A.

     Kelvin's

    B.

     Antonie's

    C.

     Kirchoffs

    D.

     None of these

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  9. For a stable phase at constant pressure and temperature, the fugacity of each component in a binary system __________ as its mole fraction increases.

  10. A.

     Decreases

    B.

     Increases

    C.

     Remains same

    D.

     Decreases linearly

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  11. Fugacity of a component in an ideal gas mixture is euqal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at contant pressure and temperature __________ as its mole fraction increases.

  12. A.

     Decreases

    B.

     Decreases exponentially

    C.

     Increases

    D.

     Remains constant

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  13. When a gas is expanded from high pressure region to low pressure region ; temper -ature change occurs. This phenomenon is related to the

  14. A.

     Gibbs-Duhem equation

    B.

     Gibbs-Helmholtz equation

    C.

     Third law of thermodynamics

    D.

     Joule-Thomson effect

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  15. Fugacity co-efficient of a substance is the ratio of its fugacity to

  16. A.

     Mole fraction

    B.

     Activity

    C.

     Pressure

    D.

     Activity co-efficient

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  17. Out of the following refrigeration cycles, which one has maximum COP?

  18. A.

     Air cycle

    B.

     Carnot cycle

    C.

     Ordinary vapor compression cycle

    D.

     Vapor compression with a reversible expansion engine

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  19. The efficiency of an Otto engine compared to that of a diesel engine, for the same compression ratio will be

  20. A.

     More

    B.

     Less

    C.

     Same

    D.

     Data insufficient to predict

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