Discussion
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- Question
When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel, the process is known as __________ of fuel.
Options- A. atomisation
- B. carbonisation
- Correct Answer
- carbonisation
- 1. The constant pressure, constant volume and constant pvn processes are regarded as irreversible process.
Options- A. True
- B. False Discuss
- 2. Workdone in a free expansion process is
Options- A. zero
- B. minimum
- C. maximum
- D. positive Discuss
- 3. Which of the following is correct?
Options- A. Absolute pressure = Gauge pressure + Atmospheric pressure
- B. Gauge pressure = Absolute pressure + Atmospheric pressure
- C. Atmospheric pressure = Absolute pressure + Gauge pressure
- D. Absolute pressure = Gauge pressure - Atmospheric pressure Discuss
- 4. Which of the following statement is incorrect?
Options- A. The liquid fuels consist of hydrocarbons.
- B. The liquid fuels have higher calorific value than solid fuels.
- C. The solid fuels have higher calorific value than liquid fuels.
- D. A good fuel should have low ignition point. Discuss
- 5. The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and recondensed, then the liquid with the next higher boiling point is then evaporated and recondensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called
Options- A. cracking
- B. carbonisation
- C. fractional distillation
- D. full distillation Discuss
- 6. When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.
Options- A. True
- B. False Discuss
- 7. Which of the following represents Otto cycle on temperature - entropy (T - s) diagram?
Options- A.
- B.
- C.
- D.
Discuss
- 8. There is no change in internal energy in an isothermal process.
Options- A. Correct
- B. Incorrect Discuss
- 9. Which of the following is the lightest and most volatile liquid fuel?
Options- A. Gasoline
- B. Kerosene
- C. Fuel oil Discuss
- 10. One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.
Options- A. All
- B. 4/7
- C. 11/4
- D. 9/7 Discuss
Thermodynamics problems
Search Results
Correct Answer: True
Correct Answer: zero
Correct Answer: Absolute pressure = Gauge pressure + Atmospheric pressure
Correct Answer: The solid fuels have higher calorific value than liquid fuels.
Correct Answer: fractional distillation
Correct Answer: True
Correct Answer:
Correct Answer: Correct
Correct Answer: Gasoline
Correct Answer: 4/7
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