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Chemical Engineering :: Chemical Engineering Thermodynamics

  1. For an isothermal process, the internal energy of a gas

  2. A.
    increases
    B.
    decreases
    C.
    remains unchanged
    D.
    data insufficient, can't be predicted

  3. In the equation, PVn = constant, if the value of n = 1, then it represents a reversible __________ process.

  4. A.
    isothermal
    B.
    isobaric
    C.
    polytropic
    D.
    adiabatic

  5. For the gaseous phase chemical reaction, C2H4(g) + H2O(g) C2H5OH(g), the equilibrium conversion does not depend on the

  6. A.
    steam to ethylene ratio.
    B.
    temperature.
    C.
    pressure.
    D.
    none of these.

  7. The first law of thermodynamics is a statement of conservation of

  8. A.
    heat
    B.
    momentum
    C.
    energy
    D.
    work

  9. "Dry ice" is

  10. A.
    moisture free ice
    B.
    solid helium
    C.
    solid carbon dioxide
    D.
    none of these

  11. Cv is given by


  12. Which of the following non-flow reversible compression processes require maximum work ?

  13. A.
    Adiabatic process
    B.
    Isothermal process
    C.
    Isobaric process
    D.
    All require same work

  14. Pick out the correct statement.

  15. A.
    A real gas on expansion in vacuum gets heated up.
    B.
    An ideal gas on expansion in vacuum gets cooled.
    C.
    An ideal gas on expansion in vacuum gets heated up.
    D.
    A real gas on expansion in vacuum cools down whereas ideal gas remains unaffected.

  16. "When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change." This is called the

  17. A.
    Le-Chatelier principle.
    B.
    Kopp's rule.
    C.
    law of corresponding state.
    D.
    Arrehenius hypothesis.

  18. Sound waves propagation in air exemplifies an __________ process.

  19. A.
    adiabatic
    B.
    isothermal
    C.
    isometric
    D.
    none of these