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Class 11 Physics
Kinetic Theory Chapter 13
Quiz 1
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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
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kinetic energy of molecules and collision of molecules
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size of molecules and expansion of the container
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expansion of the container and intermolecular attraction
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intermolecular attraction and the size of molecules
Which one of the following quantities can be zero on an average for the molecules of an ideal gas in equilibrium?
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Speed
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Momentum
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Kinetic energy
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Density
Two specific heats of a perfect gas are related by:
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A
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B
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C
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D
One mole of any substance at any temperature, pressure or volume always contains ________molecules.
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A
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B
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C
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D
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:
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8/7
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49/64
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1
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7/8
When the temperature goes up, the pressure inside a rigid container will _____.
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remain unchanged
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go down
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cause particles to cool
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go up
Four moles of an ideal diatomic gas is heated at constant volume from 20° C to 30° C. The molar specific heat of the gas at constant pressure (Cp) is 30.3 Jmol-1K-1 and the universal gas constant (R) is 8.3 Jmol-1K-The increase in internal energy of the gas is
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332 J
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80.3 J
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303 J
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880 J
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
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RT/n
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nRkT
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nkT
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nT/k
The average kinetic energy of translation of a molecule of an ideal gas at temperature T is:
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(1/2) kT
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(5/7) kT
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(3/2) kT
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(7/2) kT
Three moles of an ideal monoatomic gas is initially in the state A shown in the adjoining pressure-temperature graph. It is taken to state B without changing its pressure. If R is the universal gas constant, the work done by the gas in this process is
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600 R
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300 R
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400 R
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200 R
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