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- Question
The ultimate analysis of coal consists of the determination of the percentage of
Options- A. carbon
- B. hydrogen and nitrogen
- C. sulphur and ash
- D. all of these
- Correct Answer
- all of these
- 1. One kg of sulphur requires 1 kg of oxygen for complete combustion and produces 2 kg of sulphur dioxide.
Options- A. True
- B. False Discuss
- 2. The property of a working substance which increases or decreases as the heat is supplied or removed in a reversible manner, is known as
Options- A. enthalpy
- B. internal energy
- C. entropy
- D. external energy Discuss
- 3. Second law of thermodynamics defines
Options- A. heat
- B. work
- C. internal energy
- D. entropy Discuss
- 4. Which of the following is the extensive property of a thermodynamic system?
Options- A. Pressure
- B. Volume
- C. Temperature
- D. Density Discuss
- 5. The change of entropy, when heat is absorbed by the gas, is
Options- A. positive
- B. negative
- C. positive or negative Discuss
- 6. The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)
Options- A.
- B.
- C.
- D.
Discuss
- 7. The fuel mostly used in blast furnace for extracting pig iron from iron ores is
Options- A. hard coke
- B. soft coke
- C. pulverised coal
- D. bituminous coal Discuss
- 8. The heating of a gas at constant pressure is governed by
Options- A. Boyle's law
- B. Charles' law
- C. Gay-Lussac law
- D. Avogadro's law Discuss
- 9. One kilowatt is equal to
Options- A. 1 N-m/s
- B. 100 N-m
- C. 1000 N-m/s
- D. 1 x 106 N-m/s Discuss
- 10. A closed cycle gas turbine works on Joule's cycle.
Options- A. True
- B. False Discuss
Thermodynamics problems
Search Results
Correct Answer: True
Correct Answer: entropy
Correct Answer: entropy
Correct Answer: Volume
Correct Answer: positive
Correct Answer:
Correct Answer: hard coke
Correct Answer: Charles' law
Correct Answer: 1000 N-m/s
Correct Answer: True
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