Discussion
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- Question
The smallest quantity of a substance, which can exist by itself in a chemically recognizable form is known as
Options- A. element
- B. compound
- C. atom
- D. molecule
- Correct Answer
- molecule
- 1. The absolute pressure of a given mass of a perfect gas varies inversely as its volume, when the temperature remains constant. This statement is known as Boyle's law.
Options- A. Yes
- B. No Discuss
- 2. The heat flows from a cold body to a hot body with the aid of an external source. This statement is given by
Options- A. Kelvin
- B. Joule
- C. Clausis
- D. Gay-Lussac Discuss
- 3. The unit of power in S.I. units is kilowatt.
Options- A. True
- B. False Discuss
- 4. The molecular mass expresssed in gram (i.e. 1 g - mole) of all gases, at N. T. P., occupies a volume of
Options- A. 0.224 litres
- B. 2.24 litres
- C. 22.4 litres
- D. 224 litres Discuss
- 5. Carnot cycle consists of
Options- A. two constant volume and two isentropic processes
- B. two isothermal and two isentropic processes
- C. two constant pressure and two isentropic processes
- D. one constant volume, one constant pressure and two isentropic processes Discuss
- 6. Otto cycle consists of
Options- A. two constant volume and two isentropic processes
- B. two constant pressure and two isentropic processes
- C. two constant volume and two isothermal processes
- D. one constant pressure, one constant volume and two isentropic processes Discuss
- 7. The heating of gas at constant volume is governed by
Options- A. Boyle's law
- B. Charles' law
- C. Gay-Lussac law
- D. Avogadro's law Discuss
- 8. The gas in cooling chamber of a closed cycle gas turbine is cooled at
Options- A. constant volume
- B. constant temperature
- C. constant pressure
- D. none of these Discuss
- 9. A perpetual motion machine of the first kind is __________ according to first law of thermodynamics.
Options- A. possible
- B. impossible Discuss
- 10. The increase in entropy of a system represents
Options- A. increase in availability of energy
- B. increase in temperature
- C. decrease in pressure
- D. degradation of energy Discuss
Thermodynamics problems
Search Results
Correct Answer: Yes
Correct Answer: Clausis
Correct Answer: True
Correct Answer: 22.4 litres
Correct Answer: two isothermal and two isentropic processes
Correct Answer: two constant volume and two isentropic processes
Correct Answer: Gay-Lussac law
Correct Answer: constant pressure
Correct Answer: impossible
Correct Answer: degradation of energy
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