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1. In the case of real gases, the equation of state, PV = RT (where P, V and T are respectively the pressure, volume and absolute temperature), is strictly satisfied only if corrections are applied to the measured pressure P and the measured volume V. The corrections for P and V arise respectively due to
A. kinetic energy of molecules and collision of molecules
B. size of molecules and expansion of the container
C. expansion of the container and intermolecular attraction
D. intermolecular attraction and the size of molecules
2. Which one of the following quantities can be zero on an average for the molecules of an ideal gas in equilibrium?
A. Speed
B. Momentum
C. Kinetic energy
D. Density
3. Two specific heats of a perfect gas are related by:
A. A
B. B
C. C
D. D
5. Oxygen and nitrogen in two enclosures have the same mass, volume and pressure. The ratio of the temperature of oxygen to that of nitrogen is:
A. 8/7
B. 49/64
C. 1
D. 7/8
6. When the temperature goes up, the pressure inside a rigid container will _____.
A. remain unchanged
B. go down
C. cause particles to cool
D. go up
8. A region of the earth's atmosphere contains n molecules (treated as ideal gas molecules) per unit volume. The temperature of air in the region is T. If k represents Boltzmann's constant and R represents universal gas constant, the pressure of air in the region is
A. RT/n
B. nRkT
C. nkT
D. nT/k
9. The average kinetic energy of translation of a molecule of an ideal gas at temperature T is:
A. (1/2) kT
B. (5/7) kT
C. (3/2) kT
D. (7/2) kT
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