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.
2. 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.
3. The heating of gas at constant volume is governed by
4. By decreasing the highest temperature in the Carnot cycle, its efficiency is increased.
5. One kg of carbon monoxide requires 4/7 kg of oxygen and produces
6. Workdone during adiabatic expansion is given by (where p1 v1, T1 = Pressure, volume and temperature for the initial condition of gas, p2, v2, T2 = Corresponding values for the final condition of gas, R = Gas constant, and γ = Ratio of specific heats)
7. The absolute zero pressure will be
8. The principal constituents of a fuel are
9. Which of the following gas has the highest calorific value?
10. The oxygen atom is __________ times heavier than the hydrogen atom.
11. The molecular mass expressed in gram (i.e. 1 g - mole) of all gases, at N. T. P., occupies a volume of
12. The work ratio of a gas turbine plant is given by
13. When the gas is cooled at constant pressure,
14. Boyle's law states that change of internal energy of a perfect gas is directly proportional to the change of temperature.
15. The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is always __________ one.
16. The heat flows from a cold body to a hot body with the aid of an external source. This statement is given by
17. The variables which control the physical properties of a perfect gas are
18. The isothermal and adiabatic processes are regarded as
19. The gas constant (R) is equal to the
20. The unit of power in S.I. units is watt.
Thermodynamics MCQ 8
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