Home / Chemical Engineering / Chemical Engineering Thermodynamics :: Section-9

Chemical Engineering :: Chemical Engineering Thermodynamics

  1. What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope?

  2. A.

     3

    B.

     2

    C.

     1

    D.

     0

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. What is the degree of freedom for two mis-cible (non-reacting) substances in vapor-liquid equilibrium forming an azeotrope?

  4. A.

     0

    B.

     1

    C.

     2

    D.

     3

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. At __________ point, all the three phases (i.e.solid, liquid and gas) co-exist.

  6. A.

     Eutcetic

    B.

     Triple

    C.

     Plait

    D.

     Critical

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. Critical compressibility factor for all substances

  8. A.

     Are more or less constant (vary from 0.2 to 0.3)

    B.

     Vary as square of the absolute temperature

    C.

     Vary as square of the absolute pressure

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one

  10. A.

     Hour

    B.

     Day

    C.

     Minute

    D.

     Second

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. Enthalpy changes over a constant pressure path are always zero for __________ gas.

  12. A.

     Any

    B.

     A perfect

    C.

     An easily liquefiable

    D.

     A real

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the

  14. A.

     Cold reservoir approaches zero

    B.

     Hot reservoir approaches infinity

    C.

     Either A or B

    D.

     Neither A nor B

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. The reaction A (l) R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The number of degrees of freedom are

  16. A.

     1

    B.

     2

    C.

     3

    D.

     0

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. In polytropic process (PVn = constant), if n = 1; it means a/an __________ process.

  18. A.

     Adiabatic

    B.

     Reversible

    C.

     Isothermal

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Mollier diagram is a plot of

  20. A.

     Temperature vs. enthalpy

    B.

     Temperature vs. enthalpy

    C.

     Entropy vs. enthalpy

    D.

     Temperature vs. internal energy

    View Answer

    Workspace

    Discuss Discuss in Forum