Discussion
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- Question
The lower calorific value of fuel may be obtained by adding the heat of steam formed during combustion to the higher calorific value.
Options- A. Yes
- B. No
- Correct Answer
- No
- 1. One kg of carbon monoxide requires 4/7 kg of oxygen and produces
Options- A. 11/3 kg of carbon dioxide gas
- B. 7/3 kg of carbon monoxide gas
- C. 11/7 kg of carbon dioxide gas
- D. 8/3 kg of carbon monoxide gas Discuss
- 2. The fuel mostly used in cement industry and in metallurgical processes is
Options- A. wood charcoal
- B. bituminous coke
- C. pulverised coal
- D. coke Discuss
- 3. As per Charles' law, the volume of a given mass of a perfect gas varies __________ as its absolute temperature, when the absolute pressure remains constant.
Options- A. directly
- B. indirectly Discuss
- 4. One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.
Options- A. 9/7
- B. 11/7
- C. 7/4
- D. 11/4 Discuss
- 5. Which of the following gas has the highest calorific value?
Options- A. Coal gas
- B. Producer gas
- C. Mond gas
- D. Blast furnace gas Discuss
- 6. The oxygen atom is __________ times heavier than the hydrogen atom.
Options- A. 2
- B. 4
- C. 8
- D. 16 Discuss
- 7. The isothermal and adiabatic processes are regarded as
Options- A. reversible process
- B. irreversible process
- C. reversible or irreversible process
- D. none of these Discuss
- 8. When the finely ground coal is moulded under pressure with or without a binding material, the resulting fuel is called briquetted coal.
Options- A. Yes
- B. No Discuss
- 9. A good fuel should have __________ ignition point.
Options- A. high
- B. low Discuss
- 10. Which of the following statement is correct according to Clausis statement of second law off thermodynamics?
Options- A. It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature.
- B. It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.
- C. It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature by using refrigeration cycle.
- D. none of the above Discuss
Thermodynamics problems
Search Results
Correct Answer: 11/7 kg of carbon dioxide gas
Correct Answer: pulverised coal
Correct Answer: directly
Correct Answer: 9/7
Correct Answer: Coal gas
Correct Answer: 16
Correct Answer: reversible process
Correct Answer: Yes
Correct Answer: low
Correct Answer: It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.
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