Thermodynamics problems
- 1. The constant pressure, constant volume and constant pvn processes are regarded as irreversible process.
Options- A. True
- B. False Discuss
Correct Answer: True
- 2. 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 Discuss
Correct Answer: carbonisation
- 3. When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.
Options- A. True
- B. False Discuss
Correct Answer: True
- 4. Which of the following represents Otto cycle on temperature - entropy (T - s) diagram?
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 5. There is no change in internal energy in an isothermal process.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 6. Which of the following is the lightest and most volatile liquid fuel?
Options- A. Gasoline
- B. Kerosene
- C. Fuel oil Discuss
Correct Answer: Gasoline
- 7. 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
Correct Answer: 4/7
- 8. Which of the following has the minimum atomic mass?
Options- A. Oxygen
- B. Sulphur
- C. Nitrogen
- D. Carbon Discuss
Correct Answer: Carbon
- 9. Carbonisation of coal consists of
Options- A. drying and crushing the coal to a fine powder
- B. moulding the finely ground coal under pressure with or without a binding material
- C. heating the wood with a limited supply of air to temperature not less than 280°C
- D. none of the above Discuss
Correct Answer: none of the above
- 10. According to Avogadro's law, the density of any two gases is __________ their molecular masses, if the gases are at the same temperature and pressure.
Options- A. equal to
- B. directly proportional to
- C. inversely proportional to Discuss
Correct Answer: directly proportional to
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