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Chemical Engineering :: Chemical Engineering Thermodynamics

  1. 1/V (∂V/∂T)p is the mathematical expression

  2. A.

     Joule-Thomson co-efficient

    B.

     Specific heat at constant pressure (Cp)

    C.

     Co-efficient of thermal expansion

    D.

     Specific heat at constant volume (CV)


  3. Cp - Cv = R is valid for __________ gases.

  4. A.

     Ideal

    B.

     All

    C.

     Very high pressure

    D.

     Very low temperature


  5. The change in Gibbs freee energy for vaporisation of a pure substance is

  6. A.

     Positive

    B.

     Negative

    C.

     Zero

    D.

     May be positive or negative


  7. The chemical potential for a pure substance is __________ its partial molal free energy.

  8. A.

     More than

    B.

     Less than

    C.

     Equal to

    D.

     Not related to


  9. For a given substance at a specified temperature, activity is __________ to fugacity.

  10. A.

     Directly proportional

    B.

     Inversely proportional

    C.

     Equal

    D.

     None of these


  11. The unit of fugacity is the same as that of the

  12. A.

     Pressure

    B.

     Temperature

    C.

     Volume

    D.

     Molar concentration


  13. Claussius-Clayperon equation gives accurate result, when the

  14. A.

     Vapour pressure is relatively low and the temperature does not vary over wide limits

    B.

     Vapour obeys the ideal gas law and the latent heat of vaporisation is constant

    C.

     Volume in the liquid state is negligible compared with that in the vapour state

    D.

     All of the above


  15. Joule-Thomson experiment is

  16. A.

     Isobaric

    B.

     Adiabatic

    C.

     Isenthalpic

    D.

     Both B & C


  17. If the internal energy of an ideal gas decreases by the same amount as the work done by the system, then the

  18. A.

     Process must be isobaric

    B.

     Temperature must decrease

    C.

     Process must be adiabatic

    D.

     Both B and C


  19. The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________ point.

  20. A.

     Freezing

    B.

     Triple

    C.

     Boiling

    D.

     Boyle