Discussion
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- Question
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
- Correct Answer
- Yes
- 1. 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
- 2. The oxygen atom is __________ times heavier than the hydrogen atom.
Options- A. 2
- B. 4
- C. 8
- D. 16 Discuss
- 3. 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
- 4. 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
- 5. 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
- 6. A good fuel should have __________ ignition point.
Options- A. high
- B. low Discuss
- 7. 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
- 8. The amount of heat obtained by the complete combustion of 1 kg of a fuel when the products of its combustion are cooled down to the temperature of supplied air is called __________ calorific value offuel.
Options- A. higher
- B. lower Discuss
- 9. Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, ? = cp/cv, known as adiabatic index, and R = Gas constant)
Options- A.
- B. cp - cv = R
- C.
- D. Both (B) and (C) Discuss
- 10. The elements are made up of minute and chemically invisible particles as atoms.
Options- A. True
- B. False Discuss
Thermodynamics problems
Search Results
Correct Answer: reversible process
Correct Answer: 16
Correct Answer: No
Correct Answer: 11/7 kg of carbon dioxide gas
Correct Answer: pulverised coal
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.
Correct Answer: higher
Correct Answer: Both (B) and (C)
Correct Answer: True
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