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Chemical Engineering :: Chemical Engineering Thermodynamics

  1. The partial molar enthalpy of a component in an ideal binary gas mixture of composition Z, at a temperature T and pressure P, is a function only of

  2. A.

     T

    B.

     T and P

    C.

     T, P and Z

    D.

     T and Z


  3. Which of the following behaves most closely like an ideal gas?

  4. A.

     He

    B.

     N₂

    C.

     O₂

    D.

     H₂


  5. The internal energy of a gas obeying P (V - b) RT (where, b is a positive constant and has a constant Cv), depends upon its

  6. A.

     Pressure

    B.

     Volume

    C.

     Temperature

    D.

     All of the above


  7. Gibbs free energy of mixing at constant pressure and temperature is always

  8. A.

     0

    B.

     ∞

    C.

     + ve

    D.

     - ve


  9. Heating of water under atmospheric pressure is an __________ process.

  10. A.

     Isochoric

    B.

     Isobaric

    C.

     Adiabatic

    D.

     Isothermal


  11. Partial molar free energy of an element A in solution is same as its

  12. A.

     Chemical potential

    B.

     Activity

    C.

     Fugacity

    D.

     Activity co-efficient


  13. The absolute entropy for all crystalline substances at absolute zero temperature is

  14. A.

     Zero

    B.

     Negative

    C.

     More than zero

    D.

     Indeterminate


  15. Equilibrium constant decreases as the temperature

  16. A.

     Increases, for an exothermic reaction

    B.

     Decreases, for an exothermic reaction

    C.

     Increases, for an endothermic reaction

    D.

     None of these


  17. A solid is transformed into vapour without going to the liquid phase at

  18. A.

     Triple point

    B.

     Boiling point

    C.

     Below triple point

    D.

     Always


  19. The number of degrees of freedom at the triple point of water is

  20. A.

     0

    B.

     1

    C.

     2

    D.

     3