Chemical Engineering Thermodynamics Exam Solutions - Set 31 - ObjectiveBooks

Chemical Engineering Thermodynamics Exam Solutions - Set 31

Practice Test: Question Set - 31

1. The four properties of a system vizPVTS are related by __________ equation.
    (A) Gibbs-Duhem
    (B) Gibbs-Helmholtz
    (C) Maxwell's
    (D) None of these

2. The expression, nCv(T2 - T1), is for the __________ of an ideal gas.
    (A) Work done under adiabatic condition
    (B) Co-efficient of thermal expansion
    (C) Compressibility
    (D) None of these

3. Clausius-Clapeyron equation is applicable to __________ equilibrium processes.
    (A) Solid-vapor
    (B) Solid-liquid
    (C) Liquid-vapor
    (D) All (a), (b) and (c)

4. (1/V) (∂V/∂T)P is the mathematical expression
    (A) Joule-Thomson co-efficient
    (B) Specific heat at constant pressure (Cp)
    (C) Co-efficient of thermal expansion
    (D) Specific heat at constant volume (CV)

5. During the phase transition, __________ changes.
    (A) Pressure
    (B) Volume
    (C) Temperature
    (D) All (a), (b) and (c)

6. Domestic refrigerator usually works on the __________ refrigeration cycle.
    (A) Carnot
    (B) Air
    (C) Absorption
    (D) Vapor-ejection

7. The activity of an ideal gas is numerically __________ its pressure.
    (A) More than
    (B) Less than
    (C) Equal to
    (D) Data insufficient, can't be predicted

8. __________ functions are exemplified by heat and work.
    (A) Path
    (B) Point
    (C) State
    (D) None of these

9. 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
    (A) Same
    (B) Doubled
    (C) Halved
    (D) One fourth of its original value

10. Chemical potential is a/an
    (A) Extensive property
    (B) Intensive property
    (C) Force which drives the chemical system to equilibrium
    (D) Both (b) and (c)

11. Claude gas liquefaction process employs cooling
    (A) At constant pressure
    (B) By throttling
    (C) By expansion in an engine
    (D) None of these

12. In the reaction, represented by, 2SO2 + O2  2SO3; ΔH = - 42 kcal; the forward reaction will be favored by
    (A) Low temperature
    (B) High pressure
    (C) Both (a) and (b)
    (D) Neither (a) nor (b)

13. Co-efficient of Performance (COP) of a refrigerator is the ratio of the
    (A) Work required to refrigeration obtained
    (B) Refrigeration obtained to the work required
    (C) Lower to higher temperature
    (D) Higher to lower temperature

14. Extensive properties of a thermodynamic system depend upon the __________ of the system.
    (A) Specific volume
    (B) Temperature
    (C) Mass
    (D) Pressure

15. Change of state namely evaporation condensation, freezing and melting is an __________ process.
    (A) Isothermal
    (B) Adiabatic
    (C) Isobaric
    (D) Isochoric

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