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Chemical Engineering :: Process Control and Instrumentation

  1. In a P-V diagram (for an ideal gas), an isothermal curve will coincide withan adiabatic curve (through a point), when

  2. A.
    Cp < Cv
    B.
    Cp = Cv
    C.
    Cp > Cv
    D.
    CCv

  3. For an ideal gas, the chemical potential is given by

  4. A.
    RT dlnP
    B.
    R dlnP
    C.
    R dlnf
    D.
    none of these

  5. Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be

  6. A.
    same
    B.
    doubled
    C.
    halved
    D.
    one fourth of its original value

  7. In the ammonia synthesis reaction, N2 + 3H2 2NH3 + 22.4 kcal, the formation of NH3 will be favoured by

  8. A.
    high temperature.
    B.
    low pressure.
    C.
    low temperature only.
    D.
    both low temperature and high pressure.

  9. Maxwell's relation corresponding to the identity, dH = dS = Vdp + ∑μi dni is


  10. Heat requirement for decomposition of a compound into its elements is __________ that is evolved during the formation of that compound from its elements.

  11. A.
    the same
    B.
    less than
    C.
    greater than
    D.
    different than

  12. The unit of equilibrium constant of a chemical reaction is the same as that of

  13. A.
    molar concentration
    B.
    temperature
    C.
    internal energy
    D.
    none of these

  14. Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass?

  15. A.
    dE = Tds - PdV
    B.
    dQ = CvdT + PdV
    C.
    dQ = CpdT + Vdp
    D.
    Tds = dE - PdV

  16. Fugacity of a component in an ideal gas mixture is euqal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at contant pressure and temperature __________ as its mole fraction increases.

  17. A.
    decreases
    B.
    decreases exponentially
    C.
    increases
    D.
    remains constant

  18. Entropy is a/an

  19. A.
    state function
    B.
    macroscopic property
    C.
    extensive property
    D.
    none of these