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Chemical Engineering :: Chemical Engineering Thermodynamics

  1. At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by(where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)

  2. A.
    μ° + RT ln f
    B.
    μ°+ R lnf
    C.
    μ° + T lnf
    D.
    μ° + R/T lnf

  3. The kinetic energy of gas molecule is zero at

  4. A.
    0°C
    B.
    273°C
    C.
    100°C
    D.
    -273°C

  5. Which of the following is not an intensive property ?

  6. A.
    Volume
    B.
    Density
    C.
    Temperature
    D.
    Pressure

  7. The necessary and sufficient condition for equilibrium between two phases is

  8. A.
    the concentration of each component should be same in the two phases.
    B.
    the temperature of each phase should be same.
    C.
    the pressure should be same in the two phases.
    D.
    the chemical potential of each component should be same in the two phases.

  9. Specific volume of an ideal gas is

  10. A.
    equal to its density.
    B.
    the reciprocal of its density.
    C.
    proportional to pressure.
    D.
    none of these.

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

  12. A.
    Surface tension
    B.
    Free energy
    C.
    Specific heat
    D.
    Refractive index

  13. Entropy change of the reaction, H2O(liquid) H2O(gas), is termed as the enthalpy of

  14. A.
    solution
    B.
    vaporisation
    C.
    formation
    D.
    formation

  15. Which law of the thermodynamics provids basis for measuring the thermodynamic property ?

  16. A.
    First law
    B.
    Zeroth law
    C.
    Third law
    D.
    Second law

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

  18. A.
    latent heat of vaporisation
    B.
    chemical potential
    C.
    molal boiling point
    D.
    heat capacity

  19. With increase in pressure (above atmospheric pressure), the Cp of a gas

  20. A.
    increases
    B.
    decreases
    C.
    remains unchanged
    D.
    first decreases and then increases