Chemical Engineering Thermodynamics 1 Mark Questions - Set 02 - ObjectiveBooks
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# Practice Test: Question Set - 02

1. Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system?
(A) Expansion valve
(B) Condenser
(C) Refrigerator
(D) Compressor

2. One ton of refrigeration capacity is equivalent to the heat removal rate of
(A) 50 kcal/hr
(B) 200 BTU/hr
(C) 200 BTU/minute
(D) 200 BTU/day

3. The equation relating EPV and T which is true for all substances under all conditions is given by (∂E/∂V)T = T(∂P/∂T)H - P. This equation is called the
(A) Maxwell's equation
(B) Thermodynamic equation of state
(C) Equation of state
(D) Redlich-Kwong equation of state

4. Entropy, which is a measure of the disorder of a system, is:
(A) Independent of pressure
(B) Independent of temperature
(C) Zero at absolute zero temperature for a perfect crystalline substance
(D) All (a), (b) & (c)

5. A refrigerator works on the principle of __________ law of thermodynamics.
(A) Zeroth
(B) First
(C) Second
(D) Third

6. Cv is given by
(A) (∂E/∂T)V
(B) (∂E/∂V)T
(C) (∂E/∂P)V
(D) (∂V/∂T)P

7. Gibbs free energy (G) is represented by, H - TS, whereas Helmholtz free energy, (A) is given by, A = E - TS. Which of the following is the Gibbs-Helmholtz equation?
(A) [∂(G/T)/∂T] = - (H/T2)
(B) [∂(A/T)/∂T]V = - E/T2
(C) Both (a) and (b)
(D) Neither (a) nor (b)

8. There is a change in __________ during the phase transition.
(A) Volume
(B) Pressure
(C) Temperature
(D) All a, b & c

9. In Joule-Thomson porous plug experiment, the
(A) Enthalpy does not remain constant
(B) Entire apparatus is exposed to surroundings
(C) Temperature remains constant
(D) None of these

10. Forward reaction will be favored for the exothermic reaction, represented by
CO + H2 CO2 + H2, by
(A) Low temperature and high pressure
(B) Low temperature and low pressure
(C) High temperature and high pressure
(D) High temperature and low pressure

11. A gas mixture of three components is brought in contact with a dispersion of an organic phase in water. The degree of freedom of the system is
(A) 3
(B) 4
(C) 5
(D) 6

12. If two gases have same reduced temperature and reduced pressure, then they will have the same
(A) Volume
(B) Mass
(C) Critical temperature
(D) None of these

13. A cyclic engine exchanges heat with two reservoirs maintained at 100 and 300°C respectively. The maximum work (in J) that can be obtained from 1000 J of heat extracted from the hot reservoir is
(A) 349
(B) 651
(C) 667
(D) 1000

14. “The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture". This is
(A) The statement as per Gibbs-Helmholtz
(B) Called Lewis-Randall rule
(C) Henry's law
(D) None of these

15. Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is
(A) 0
(B) 1
(C)
(D) None of these

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