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  1. For a multicomponent system, the term chemical potential is equivalent to the

  2. A.

     Molal concentration difference

    B.

     Molar free energy

    C.

     Partial molar free energy

    D.

     Molar free energy change


  3. When liquid and vapour phase of multi-component system are in equilibrium (at a given temperature and pressure), then chemical potential of each component is

  4. A.

     Same in both the phases

    B.

     Zero in both the phases

    C.

     More in vapour phase

    D.

     More in liquid phase


  5. The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.

  6. A.

     Less than

    B.

     Equal to

    C.

     More than

    D.

     Either B or C; depends on the type of alloy


  7. Pick out the extensive property out of the following.

  8. A.

     Surface tension

    B.

     Free energy

    C.

     Specific heat

    D.

     Refractive index


  9. Gibbs free energy per mole for a pure substance is equal to the

  10. A.

     Latent heat of vaporisation

    B.

     Chemical potential

    C.

     Molal boiling point

    D.

     Heat capacity


  11. A change in state involving a decrease in entropy can be spontaneous, only if

  12. A.

     It is exothermic

    B.

     It is isenthalpic

    C.

     It takes place isothermally

    D.

     It takes place at constant volume


  13. For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm³ and that in vapour phase in 391.1 cm³.Fugacity of water (in kPa) at 9000 kPa will be

  14. A.

     6738.9

    B.

     6753.5

    C.

     7058.3

    D.

     9000


  15. The equation, Cp - Cv = R, is true for __________ gas.

  16. A.

     No

    B.

     Any real

    C.

     Only ideal

    D.

     Both B and C


  17. Duringthe phase transition, __________ changes.

  18. A.

     Pressure

    B.

     Volume

    C.

     Temperature

    D.

     All of the above


  19. The specific heat of saturated water vapour at 100°C is

  20. A.

     ∞

    B.

     -ve

    C.

     0

    D.

     +ve