Discussion
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- Question
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
- Correct Answer
- 9/7
- 1. 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
- 2. The gas constant (R) is equal to the
Options- A. sum of two specific heats
- B. difference of two specific heats
- C. product of two specific heats
- D. ratio of two specific heats Discuss
- 3. When the gas is heated at constant volume, the heat supplied
Options- A. increases the internal energy of the gas and increases the temperature of the gas
- B. does some external work during expansion
- C. Both (A) and (B)
- D. None of these Discuss
- 4. The efficiency of Otto cycle depends upon the specific heats of the working substance.
Options- A. Yes
- B. No Discuss
- 5. The work ratio of simple gas turbine cycle depends upon
Options- A. maximum cycle temperature
- B. minimum cycle temperature
- C. pressure ratio
- D. all of these Discuss
- 6. 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
- 7. 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
- 8. 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
- 9. 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 Discuss
- 10. The oxygen atom is __________ times heavier than the hydrogen atom.
Options- A. 2
- B. 4
- C. 8
- D. 16 Discuss
Thermodynamics problems
Search Results
Correct Answer: Coal gas
Correct Answer: difference of two specific heats
Correct Answer: increases the internal energy of the gas and increases the temperature of the gas
Correct Answer: No
Correct Answer: all of these
Correct Answer: directly
Correct Answer: pulverised coal
Correct Answer: 11/7 kg of carbon dioxide gas
Correct Answer: No
Correct Answer: 16
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