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Q.

Choose the incorrect statement.

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a

Rate of effusion of gas is inversely proportional to the molecular weight of gas.

b

Mean free path of gases decreases with increase in temperature at constant volume.

c

Partial pressure of gas does not change on addition of another gas in the same container at constant volume and temperature.

d

Compressibility of real gases are always more than ideal gases.

answer is A.

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Detailed Solution

The square-root of a gas's molecular mass has an inverse relationship with the rate of effusion for that gas.

The molecules in a gas approach one another more closely as the gas density rises.

At high pressure, all actual gases are less compressible than ideal gases.

The correct answer is A, B, D.

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