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- Question
The freezing point of a liquid decreases when the pressure is increased, if the liquid __________ while freezing.
Options- A. contracts
- B. expands
- C. does not change in volume
- D. either (a), (b) or (c)
- Correct Answer
- contracts
- 1. __________ increases with increase in pressure.
Options- A. The melting point of wax
- B. The boiling point of a liquid
- C. both (a) and (b)
- D. neither (a) nor (b) Discuss
- 2. Fundamental principle of refrigeration is based on the __________ law of thermodynamics.
Options- A. zeroth
- B. first
- C. second
- D. third Discuss
- 3. Water on heating from 1 to 4°C
Options- A. contracts
- B. expands
- C. has same volume
- D. may contract or expand Discuss
- 4. Entropy is a measure of the __________ of a system.
Options- A. disorder
- B. orderly behaviour
- C. temperature changes only
- D. none of these Discuss
- 5. The accentric factor of a materical, '?', is defined as ? = -log10(Prsat)Tr-1 = 0.7, where, Prsat = reduced vapor pressure, Tr = reduced temperature. The value of accentric factor is always
Options- A. > 2
- B. < 1
- C. > 1
- D. < 3 Discuss
- 6. In a reversible chemical reaction (where, ?x = number of moles of products-number of moles of reactants )
Options- A. addition of inert gas favours the forward reaction, when ?x is positive.
- B. pressure has no effect on equilibrium, when ?n = 0.
- C. addition of inert gas has no effect on the equilibrium constant at constant volume for any value of ?x (+ ve, - ve) or zero).
- D. all 'a', 'b' & 'c'. Discuss
- 7. Isobaric process means a constant process.
Options- A. temperature
- B. pressure
- C. volume
- D. entropy Discuss
- 8. Compressibility factor for almost all the gases are approximately same at the same
Options- A. pressure and temperature.
- B. reduced pressure and reduced temperature.
- C. critical pressure and critical temperature.
- D. none of these. Discuss
- 9. If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the
Options- A. Maxwell's equation
- B. Clayperon-Claussius equation
- C. Van Laar equation
- D. Nernst Heat Theorem Discuss
- 10. Pick out the wrong statement.
Options- A. Activity co-efficient is dimensionless.
- B. In case of an ideal gas, the fagacity is equal to its pressure.
- C. In a mixture of ideal gases, the fugacity of a component is equal to the partial pressure of the component.
- D. The fugacity co-efficient is zero for an ideal gas. Discuss
Chemical Engineering Thermodynamics problems
Search Results
Correct Answer: both (a) and (b)
Correct Answer: second
Correct Answer: contracts
Correct Answer: disorder
Correct Answer: < 1
Correct Answer: all 'a', 'b' & 'c'.
Correct Answer: pressure
Correct Answer: reduced pressure and reduced temperature.
Correct Answer: Clayperon-Claussius equation
Correct Answer: The fugacity co-efficient is zero for an ideal gas.
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