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Chemical Engineering :: Chemical Engineering Thermodynamics

  1. The unit of equilibrium constant of a chemical reaction is the same as that of

  2. A.

     Molar concentration

    B.

     Temperature

    C.

     Internal energy

    D.

     None of these


  3. Compressibility factor (i.e., the ratio of actual volume of gas to the volume predicted by ideal gas law) for all gases are

  4. A.

     Always greater than one

    B.

     Same at the same reduced temperature

    C.

     Same at the same reduced pressure

    D.

     Both B & C


  5. During a reversible isothermal expansion of an ideal gas, the entropy change is

  6. A.

     +ve

    B.

     0

    C.

     -ve

    D.

     ∞


  7. When a gas in a vessel expands, its internal energy decreases. The process involved is

  8. A.

     Reversible

    B.

     Irreversible

    C.

     Isothermal

    D.

     Adiabatic


  9. Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is

  10. A.

     1

    B.

     4

    C.

     2

    D.

     3


  11. Which of the following is not affected by temperature changes?

  12. A.

     Fugacity

    B.

     Activity co-efficient

    C.

     Free energy

    D.

     None of these


  13. Forward reaction will be favoured for the exothermic reaction, represented by CO + H₂O ⇋ CO₂ + H₂, by

  14. A.

     Low temperature and high pressure

    B.

     Low temperature and low pressure

    C.

     High temperature and high pressure

    D.

     High temperature and low pressure


  15. The principle applied in liquefaction of gases is

  16. A.

     Adiabatic expansion

    B.

     Joule-Thomson effect

    C.

     Both A and B

    D.

     Neither A nor B


  17. For a cyclic process, a fixed ratio between heat and work

  18. A.

     Always exists

    B.

     May exist

    C.

     Never exists

    D.

     Is difficult to predict


  19. The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the __________ temperature.

  20. A.

     Critical

    B.

     Boyle

    C.

     Inversion

    D.

     Reduced