Home / Chemical Engineering / Chemical Engineering Thermodynamics :: Section 1

Chemical Engineering :: Chemical Engineering Thermodynamics

  1. A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect ?

  2. A.
    Vapor compression cycle using expansion valve.
    B.
    Air refrigeration cycle.
    C.
    Vapor compression cycle using expansion engine.
    D.
    Carnot refrigeration cycle.

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. __________ increases with increase in pressure.

  4. A.
    The melting point of wax
    B.
    The boiling point of a liquid
    C.
    both (a) and (b)
    D.
    neither (a) nor (b)

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. A refrigerator may be termed as a

  6. A.
    heat pump
    B.
    heat engine
    C.
    Carnot engine
    D.
    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. For a stable phase at constant pressure and temperature, the fugacity of each component in a binary system __________ as its mole fraction increases.

  8. A.
    decreases
    B.
    increases
    C.
    remains same
    D.
    decreases linearly

    View Answer

    Workspace

    Discuss Discuss in Forum


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

  10. A.
    Chemical potential
    B.
    Surface tension
    C.
    Heat capacity
    D.
    None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. Out of the following refrigration cycles, which one has the minimum COP (Co-efficient of performance)?

  12. A.
    Air cycle
    B.
    Carnot cycle
    C.
    Ordinary vapour compression cycle
    D.
    Vapour compression with a reversible expansion engine

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Measurement of thermodynamic property of temperature is facilitated by __________ law of thermodynamics.

  14. A.
    1st
    B.
    zeroth
    C.
    3rd
    D.
    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n- heptane and n- octane into pure compounds each at 1 atm is

  16. A.
    -2 RT ln 0.5
    B.
    -RT ln 0.5
    C.
    0.5 RT
    D.
    2 RT

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. Keeping the pressure constant, to double the volume of a given mass of an ideal gas at 27°C, the temperature should be raised to __________ °C.

  18. A.
    270
    B.
    327
    C.
    300
    D.
    540

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Entropy of an ideal gas depends upon its

  20. A.
    pressure
    B.
    temperature
    C.
    both (a) & (b)
    D.
    neither (a) nor (b)

    View Answer

    Workspace

    Discuss Discuss in Forum