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Chemical Engineering :: Chemical Engineering Thermodynamics

  1. __________ law of thermodynamics ascertains the direction of a particular spontaneous process.

  2. A.
    Zeroth
    B.
    First
    C.
    Second
    D.
    Third

  3. At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.

  4. A.
    72
    B.
    92
    C.
    142
    D.
    192

  5. The expression, nCv(T2 - T1), is for the __________ of an ideal gas.

  6. A.
    work done under adiabatic condition
    B.
    co-efficient of thermal expansion
    C.
    compressibility
    D.
    none of these

  7. Which of the following is a widely used refrigerant in vapour compression refrigeration system (using large centrifugal compressor)?

  8. A.
    Freon
    B.
    Liquid sulphur dioxide
    C.
    Methyl chloride
    D.
    Ammonia

  9. Internal energy is equal to the heat absorbed in case of a/an __________ process.

  10. A.
    constant volume
    B.
    polytropic
    C.
    adiabatic
    D.
    constant pressure

  11. The first law of thermodynamics is a restatement of the law of conservation of

  12. A.
    mass
    B.
    energy
    C.
    momentum
    D.
    none of these

  13. Joule-Thomson co-efficient for a perfect gas is

  14. A.
    zero
    B.
    positive
    C.
    negative
    D.
    none of these

  15. In an adiabatic process, the

  16. A.
    heat transfer is zero.
    B.
    temperature change is zero.
    C.
    work done is a path function.
    D.
    enthalpy remains constant.

  17. A nozzle is a device, which

  18. A.
    increases kinetic energy and decreases pressure.
    B.
    reduces kinetic energy and increases pressure.
    C.
    reduces both kinetic energy and pressure.
    D.
    increases both kinetic energy and pressure.

  19. Duringthe phase transition, __________ changes.

  20. A.
    pressure
    B.
    volume
    C.
    temperature
    D.
    all (a), (b) and (c)