Introduction to Chemical Engineering Thermodynamics MCQs - Set 06 - ObjectiveBooks
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Introduction to Chemical Engineering Thermodynamics MCQs - Set 06

Practice Test: Question Set - 06


1. Cp - Cv = R is valid for __________ gases.
    (A) Ideal
    (B) Very high pressure
    (C) Very low temperature
    (D) All of the above

2. The number of degree of freedom for an Azeotropic mixture of ethanol and water in vapour-liquid equilibrium, is
    (A) 3
    (B) 1
    (C) 2
    (D) 0

3. If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in
    (A) Volume
    (B) Enthalpy
    (C) Both (a) & (b)
    (D) Neither (a) nor (b)

4. Melting of wax is accompanied with __________ in entropy.
    (A) Increase
    (B) Decrease
    (C) No change
    (D) None of these

5. Activity co-efficient is a measure of the
    (A) Departure from ideal solution behavior
    (B) Departure of gas phase from ideal gas law
    (C) Vapor pressure of liquid
    (D) None of these

6. Reduced pressure of a gas is the ratio of its
    (A) Pressure to critical pressure
    (B) Critical pressure to pressure
    (C) Pressure to pseudocritical pressure
    (D) Pseudocritical pressure to pressure

7. Fugacity and pressure are numerically equal, when the gas is
    (A) In standard state
    (B) At high pressure
    (C) At low temperature
    (D) In ideal state

8. Which of the following exemplifies an adiabatic process?
    (A) Melting of ice
    (B) Condensation of alcohol vapor
    (C) Sudden bursting of a cycle tube
    (D) Evaporation of water

9. Third law of thermodynamics is concerned with the
    (A) Value of absolute entropy
    (B) Energy transfer
    (C) Direction of energy transfer
    (D) None of these

10. For the gaseous phase chemical reaction, C2H4(g) + H2O(g) ↔ C2H5OH(g), the equilibrium conversion does not depend on the
    (A) Steam to ethylene ratio
    (B) Temperature
    (C) Pressure
    (D) None of these

11. Clapeyron Equation deals with the
    (A) Rate of change of vapor pressure with temperature
    (B) Effect of an inert gas on vapor pressure
    (C) Calculation of ΔF for spontaneous phase change
    (D) Temperature dependence of heat of phase transition

12. Which of the following is affected by the temperature?
    (A) Fugacity
    (B) Activity co-efficient
    (C) Free energy
    (D) All (a), (b) & (c)

13. For an ideal gas, the enthalpy
    (A) Increases with rise in pressure
    (B) Decreases with rise in pressure
    (C) Is independent of pressure
    (D) Is a path function

14. Chemical engineering thermodynamics is concerned with the __________ in/of chemical processes.
    (A) Reaction mechanism
    (B) Calculation of rates
    (C) Energy transformation from one form to another
    (D) None of these

15. Fugacity and pressure are numerically not equal for the gases
    (A) At low temperature and high pressure
    (B) At standard state
    (C) Both (a) and (b)
    (D) In ideal state

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