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Chemical Engineering :: Process Control and Instrumentation

  1. In the reaction, represented by, 2SO2 + O2 2SO3; ΔH = - 42 kcal; the forward reaction will be favoured by

  2. A.
    low temperature
    B.
    high pressure
    C.
    both (a) and (b)
    D.
    neither (a) nor (b)

  3. At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be

  4. A.
    more
    B.
    less
    C.
    same
    D.
    more or less ; depending on the system.

  5. Compressibility factor (i.e., the ratio of actual volume of gas to the volume predicted by ideal gas law) for all gases are

  6. A.
    always greater than one.
    B.
    same at the same reduced temperature.
    C.
    same at the same reduced pressure.
    D.
    both(b) & (c).

  7. Which of the following is not correct for a reversible adiabatic process ?

  8. A.
    TVγ-1 = constant
    B.
    p1-γ.TY = constant
    C.
    PVγ = constant
    D.
    none of these

  9. The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 - T2)/T1. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T1 and T2 is given by

  10. A.
    T1/(T1-T2)
    B.
    T2/(T1-T2)
    C.
    T1/T2
    D.
    T2/R1

  11. Throttling (Joule-Thomson effect) process is a constant __________ process.

  12. A.
    enthalpy
    B.
    entropy
    C.
    pressure
    D.
    none of these

  13. Boiling of liquid is accompanied with increase in the

  14. A.
    vapor pressure.
    B.
    specific Gibbs free energy.
    C.
    specific entropy.
    D.
    all (a), (b) and (c).

  15. Change of state namely evaportation condensation, freezing and melting is an __________ process.

  16. A.
    isothermal
    B.
    adiabatic
    C.
    isobaric
    D.
    isochoric

  17. Which of the following is not an equation of state?

  18. A.
    Bertholet equation
    B.
    Clausius Clayperon equation
    C.
    Beattie-Bridgeman equation
    D.
    None of these

  19. A gas shows deviation from ideal behaviour at

  20. A.
    low pressure and high temperature.
    B.
    low pressure and low temperature.
    C.
    low temperature and high pressure.
    D.
    high temperature and high pressure.