The Gas Laws
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The Gas Laws
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20 Questions

1. At the same temperature and pressure, which of the following gases will have the highest kinetic energy per mole?
2. 180 mL of hydrocarbon takes 15 min to diffuse. Under the same conditions 120 mL of sulphur dioxide (mol. Wt 64) takes 20 min. The molecular weight of the hydrocarbon is
3. A postulate of kinetic theory of gases is
4. The rate of diffusion of methane at a given temperature is twice that of gas X. The molecular weight of X is
5. Rate of diffusion of a gas is
6. If the volume of 2 moles of an ideal gas at 540 K is 44.8 L, then its pressure will be
7. Value of universal constant R depends upon
8. The relative rate of diffusion of a gas (molecular weight =128) as compared to oxygen is
9. The volume of a gas is reduced to (1/4)th. The pressure is to increase
10. Which one of the following statements is false?
11. Two gases CH4 and H2 are filled in containers 1 and 2 respectively. If P, V and T are equal for both the gases, the number of molecules in the containers will be
12. Which of the following conditions represents the easiest method to liquefy a gas?
13. The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is
14. How will you separate mixture of two gases?
15. If the absolute temperature of a gas is doubled and the pressure is reduced to one-half the volume of the gas will
16. van der Waals equation is valid for
17. At N.T.P., the volume of a gas is found to be 273 mL. What will be the volume of this gas at 600 mm Hg and 273°C?
18. The relative rate of diffusion of a gas (mol. Mass 98) as compared to hydrogen will be
19. A cylinder of 5 litre capacity, filled with air at N.T.P. is connected with another evacuated cylinder of 30 litre of capacity. The resultant air pressure in both the cylinders will be
20. At constant volume, for a mixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to

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