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What is the kinetic energy (in ) of the nitrogen molecule at ?
(a)
(b)
(c)
(d)

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Important Questions on States of Matter : Gases and Liquids
HARD
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A litre cylinder contains equal volumes of and . If the mixture is allowed to diffuse from an opening, estimate the percent composition of the output gas. (Assume ideal behaviour of gas mixture)

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The van der Waals constant is the measure of intermolecular force of attraction in a gas. The correct decreasing order of for the given set of molecules is

HARD
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Suppose that, of is confined in a container at . Calculate the pressure exerted by ethane from van der Waals equation of state?

HARD
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Which one of the following plots is correct for the behaviour of ideal and real gases?

EASY
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Among the following gases, the order of liquefiability is
a)
b)
c)
d)

EASY
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The compressibility factor of a gas is at STP. Therefore

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Which of the following options correctly represents the relations of compressibility factor (z) and van der Waals equation for mole of gas at low pressure?

MEDIUM
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IMPORTANT
The units of surface tension and viscosity of a liquid, respectively, are
