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Chemical Engineering :: Chemical Engineering Thermodynamics

  1. Refrigeration capacity of a household refrigerator may be round about __________ tons.

  2. A.
    0.15
    B.
    1.5
    C.
    4.5
    D.
    6.5

  3. is the mathematical expression for

  4. A.
    CV
    B.
    entropy change
    C.
    Gibbs free energy
    D.
    none of these

  5. An ideal gas is taken around the cycle ABCA as shown in P-V diagram below :

    The work done by the gas during the cycle is equal to

  6. A.
    12 P1V1
    B.
    6 P1 V1
    C.
    3 P1V1
    D.
    P1 V1

  7. Chemical potential is a/an

  8. A.
    extensive property.
    B.
    intensive property.
    C.
    force which drives the chemical system to equilibrium.
    D.
    both (b) and (c).

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

  10. A.
    adiabatic
    B.
    reversible
    C.
    isothermal
    D.
    none of these

  11. The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise.

  12. A.
    increases
    B.
    decreases
    C.
    remains unchanged
    D.
    decreases linearly

  13. Co-efficient of Performance (COP) of a refrigerator is the ratio of the

  14. A.
    work required to refrigeration obtained.
    B.
    refrigeration obtained to the work required.
    C.
    lower to higher temperature.
    D.
    higher to lower temperature.

  15. The Maxwell relation derived from the differential expression for the Helmholtz free energy (dA) is


  16. dW and dq are not the exact differential, because q and W are

  17. A.
    state functions
    B.
    path functions
    C.
    intensive properties
    D.
    extensive properties