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- Question
The ratio of molar specific heats for monoatomic gas is
Options- A. 1
- B. 1.4
- C. 1.67
- D. 1.87
- Correct Answer
- 1.67
- 1. The state of a substance whose evaporation from its liquid state is complete, is known as
Options- A. vapour
- B. perfect gas
- C. air
- D. steam Discuss
- 2. When the expansion or compression takes place according to the law pvn = C, the process is known as
Options- A. isothermal process
- B. adiabatic process
- C. hyperbolic process
- D. polytropic process Discuss
- 3. The free expansion process is a constant enthalpy process.
Options- A. Correct
- B. Incorrect Discuss
- 4. A closed system is one in which heat and work crosses the boundary of the system but the mass of the working substance does not crosses the boundary of the system.
Options- A. Yes
- B. No Discuss
- 5. Producer gas is obtained by
Options- A. partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
- B. carbonisation of bituminous coal
- C. passing steam over incandescent coke
- D. passing air and a large amount of steam over waste coal at about 650°C Discuss
- 6. The state of a substance whose evaporation from its liquid state is partial, is known as steam.
Options- A. Agree
- B. Disagree Discuss
- 7. The main cause for the irreversibility is
Options- A. mechanical and fluid friction
- B. unrestricted expansion
- C. heat transfer with a finite temperature difference
- D. all of the above Discuss
- 8. According to kinetic theory of gases, the kinetic energy of translation of a molecule is proportional to
Options- A. T
- B. T
- C. 1/T
- D. 1/T Discuss
- 9. In an irreversible process, there is a
Options- A. loss of heat
- B. no loss of heat
- C. gain of heat
- D. no gain of heat Discuss
- 10. When a gas is heated at constant volume
Options- A. its temperature will increase
- B. its pressure will increase
- C. both temperature and pressure will increase
- D. neither temperature nor pressure will increase Discuss
Thermodynamics problems
Search Results
Correct Answer: perfect gas
Correct Answer: polytropic process
Correct Answer: Correct
Correct Answer: Yes
Correct Answer: partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
Correct Answer: Disagree
Correct Answer: all of the above
Correct Answer: T
Correct Answer: loss of heat
Correct Answer: both temperature and pressure will increase
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