Discussion
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- Question
Out of the following refrigeration cycles, which one has maximum COP?
Options- A. Air cycle
- B. Carnot cycle
- C. Ordinary vapor compression cycle
- D. Vapor compression with a reversible expansion engine
- Correct Answer
- Carnot cycle
- 1. No work is done by the system, when a reaction occurs at constant
Options- A. volume
- B. temperature
- C. pressure
- D. none of these Discuss
- 2. Measurement of thermodynamic property of temperature is facilitated by __________ law of thermodynamics.
Options- A. 1st
- B. zeroth
- C. 3rd
- D. none of these Discuss
- 3. 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
- 4. 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
- 5. 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
- 6. Maximum work that could be secured by expanding the gas over a given pressure range is the __________ work.
Options- A. isothermal
- B. adiabatic
- C. isentropic
- D. none of these Discuss
- 7. During Joule-Thomson expansion of gases
Options- A. enthalpy remains constant.
- B. entropy remains constant.
- C. temperature remains constant.
- D. none of these. Discuss
- 8. Which of the following is not used as a binder in coal briquetting?
Options- A. Tar
- B. Molasses
- C. Pitch
- D. Line Discuss
- 9. Gross & net calorific value is the same for
Options- A. blast furnace gas
- B. coke oven gas
- C. L.D. converter gas
- D. none of these Discuss
- 10. Stack heat losses can be minimised by
Options- A. controlling the excess air.
- B. oxygen enrichment of combustion air.
- C. using low c.v. fuels.
- D. maintaining proper draft in the furnace. Discuss
Chemical Engineering Thermodynamics problems
Search Results
Correct Answer: volume
Correct Answer: zeroth
Correct Answer: The fugacity co-efficient is zero for an ideal gas.
Correct Answer: Clayperon-Claussius equation
Correct Answer: reduced pressure and reduced temperature.
Correct Answer: isothermal
Correct Answer: enthalpy remains constant.
Correct Answer: Line
Correct Answer: L.D. converter gas
Correct Answer: controlling the excess air.
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