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Chemical Engineering :: Chemical Engineering Thermodynamics

  1. Work done is a

  2. A.
    property of the system
    B.
    path function
    C.
    point function
    D.
    state description of a system

  3. Entropy of the system decreases, when

  4. A.
    snow melts into water.
    B.
    a gas expands spontaneously from high pressure to low pressure.
    C.
    water is converted into ice.
    D.
    both (b) & (c).

  5. Extensive properties of a thermodynamic system depend upon the __________ of the system.

  6. A.
    specific volume
    B.
    temperature
    C.
    mass
    D.
    pressure

  7. The equation Tds = dE - PdV applies to

  8. A.
    single phase fluid of varying composition.
    B.
    single phase fluid of constant composition.
    C.
    open as well as closed systems.
    D.
    both (b) and (c)

  9. If an ideal solution is formed by mixing two pure liquids in any proportion, then the __________ of mixing is zero.

  10. A.
    enthalpy
    B.
    volume
    C.
    both 'a' & 'b'
    D.
    neither 'a' nor 'b'

  11. Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas.

  12. A.
    less than
    B.
    same as
    C.
    more than
    D.
    half

  13. The free energy change for a chemical reaction is given by (where, K = equilibrium constant)

  14. A.
    RT lnK
    B.
    -RT lnK
    C.
    -R lnK
    D.
    T lnK

  15. Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature.

  16. A.
    decreases
    B.
    increases
    C.
    remains constant
    D.
    decreases logarithmically

  17. In the reaction, H2 +I2 2HI, addition of an inert gas will

  18. A.
    increase the partial pressure of H2.
    B.
    increase the partial pressure of I2.
    C.
    increase the total pressure and hence shift the equilibrium towards the right.
    D.
    not effect the equilibrium conditions

  19. The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the __________ temperature.

  20. A.
    critical
    B.
    Boyle
    C.
    inversion
    D.
    reduced