Home / Chemical Engineering / Process Control and Instrumentation :: Section 6

Chemical Engineering :: Process Control and Instrumentation

  1. 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

  2. A.
    same in both the phases.
    B.
    zero in both the phases.
    C.
    more in vapour phase.
    D.
    more in liquid phase.

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about

  4. A.
    0.5
    B.
    3.5
    C.
    4.5
    D.
    8.5

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will

  6. A.
    increase
    B.
    decrease
    C.
    remain same
    D.
    increase in summer and will decrease in winter

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. Domestic refrigerator usually works on the __________ refrigeration cycle.

  8. A.
    Carnot
    B.
    air
    C.
    absorption
    D.
    vapour-ejection

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. Gibbs-Duhem equation

  10. A.
    states that n1dμ1 + n2dμ2 + ....njdμj = 0, for a system of definite composition at constant temperature and pressure.
    B.
    applies only to binary systems.
    C.
    finds no application in gas-liquid equilibria involved in distillation.
    D.
    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum


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

  12. A.
    1
    B.
    4
    C.
    2
    D.
    3

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. 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

  14. A.
    pressure
    B.
    volume
    C.
    temperature
    D.
    all (a), (b) & (c).

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. "When a gas is expanded from high pressure region to low pressure region ; temper -ature change occurs". This phenomenon is related to the

  16. A.
    Gibbs-Duhem equation
    B.
    Gibbs-Helmholtz equation
    C.
    Third law of thermodynamics
    D.
    Joule-Thomson effect

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. The internal energy of an ideal gas does not change in a reversible __________ process.

  18. A.
    isothermal
    B.
    adiabatic
    C.
    isobaric
    D.
    isometric

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. A/an __________ system is exemplified by a vessel containing a volatile liquid in contact with its vapor.

  20. A.
    isolated
    B.
    closed
    C.
    open
    D.
    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum