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1. The kinetic energy of gas molecules is directly proportional to

A. Pressure B. Temperature C. Volume D. Density

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2. The average kinetic energy of a gas molecule is given by

A. 3/2 kT B. 1/2 kT C. kT D. 5/2 kT

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3. The ratio of Cp to Cv for a monoatomic gas is

A. 1.67 B. 1.4 C. 1.33 D. 1.2

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4. The root mean square velocity of gas molecules is proportional to

A. T B. √T C. 1/T D. 1/√T

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5. The pressure exerted by a gas is due to

A. Intermolecular attraction B. Collisions of molecules with container walls C. Elastic collisions between molecules D. Volume of the gas

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6. The mean free path of gas molecules increases when

A. Pressure increases B. Density increases C. Temperature increases D. Number of molecules per unit volume decreases

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7. The internal energy of an ideal gas is dependent on

A. Temperature B. Pressure C. Volume D. All of these

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8. The molar specific heat capacity at constant volume for a diatomic gas is

A. 3R/2 B. 5R/2 C. 7R/2 D. R

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9. For a diatomic gas, the degrees of freedom are

A. 3 B. 5 C. 6 D. 7

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10. The average kinetic energy of one mole of an ideal gas is given by

A. 3/2 RT B. RT C. 5/2 RT D. 7/2 RT

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11. The number of molecules in one mole of any gas is equal to

A. Boltzmann constant B. R C. Avogadro's number D. Universal gas constant

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12. If the temperature of a gas is doubled, its root mean square speed becomes

A. Double B. Half C. √2 times D. Four times

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13. The pressure of a gas is directly proportional to

A. Square of velocity of gas molecules B. Volume of the gas C. Density at constant temperature D. Number of molecules per unit volume

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14. For an ideal gas, the mean free path is inversely proportional to

A. Temperature B. Pressure C. Volume D. Velocity

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15. The ratio of Cp to Cv for a diatomic gas at room temperature is

A. 1.67 B. 1.33 C. 1.4 D. 1.29

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16. The total translational kinetic energy of one mole of a gas is

A. 3/2 RT B. 5/2 RT C. RT D. 7/2 RT

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17. The internal energy of one mole of a monoatomic gas is equal to

A. 3/2 RT B. 5/2 RT C. RT D. 7/2 RT

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18. The root mean square velocity of oxygen molecules at a temperature T is proportional to

A. 1/T B. T C. √T D. T²

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19. The temperature at which the root mean square speed of oxygen molecules is the same as that of hydrogen molecules at 300 K is

A. 4800 K B. 600 K C. 900 K D. 9600 K

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20. The ideal gas equation PV = nRT is applicable to

A. All gases under all conditions B. Ideal gases under all conditions C. Ideal gases at low pressure and high temperature D. Real gases under high pressure and low temperature