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Thermodynamics Practice Test: Properties of Gases and Gas mixtures
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Properties of Gases and Gas mixtures topics include: State of gas equations, ideal gas, state laws and Daltons law. Here are some properties of gases: No definite shape or volume: Gases can expand to fill any container and take the shape of the container. Compressibility: Gases are easily compressed and can have their volume reduced by applying pressure. Low density: Gases have a lower density and are more compressible than solids and liquids. Diffusibility: Gases diffuse very quickly. Exertion of pressure: Gases exert pressure equally in all directions. Expansibility: When pressure is... Show more
Thermodynamics Practice Test: Properties of Gases and Gas mixtures
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25 Questions

1. For minimum work the intermediate pressure is the _____ of the suction and discharge pressures.
2. At very low pressures Z approaches
3. Real gases conform more closely with the van der Waals equation of state than the ideal gas equation of state.
4. The value of cp and cv depend on
5. Which of the following statement is true?
6. At constant temperature, (u being the internal energy)
7. The volumetric efficiency is given by
8. If two properties (out of p,v,T) of a gas are known, the third can be evaluated.
9. For a reversible adiabatic change, ds=0.
10. Volumetric efficiency decreases as the clearance _____ and as the pressure _____
11. At NTP, the volume of a g mol of all gases is(in litres)
12. A two-stage compression process includes,
13. Which of the following relation is correct?
14. The magnitude of Z at a particular pressure and temperature indicates the extent of deviation of the gas from the ideal gas behaviour.
15. Which of the following is true?
16. The value of universal gas constant is
17. The Boyle temperature is given by
18. A hollow metal sphere having an inside diameter of 150-mm is weighed first when evacuated and then after being filled to 875 kPa with an unknown gas. If the difference in mass is 0.0025 kg, and the temperature is 25°C, find the gas.
19. How could we use one compressibility factor chart for all the substances?
20. A rigid tank of 1 m^3 contains nitrogen gas at 600 kPa and 400 K. If 0.5 kg of gas flows out then what is the final pressure given the final temperature is 375 K?
21. For a isometric or isochoric process, n=infinity.
22. A spherical helium balloon of 10m diameter is at 15°C and 100 kPa. How much helium does it contain?
23. The ratio of cp/cv is designated by the symbol ɣ.
24. Which of the following statement is true?
25. Specific heats are constant for an ideal gas.