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The number of gas molecules striking per second per square meter of the top surface of a table placed in a room at and atmospheric pressure is of the order of ( and the average mass of an air molecule is )
(a)
(b)
(c)
(d)

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Important Questions on Behaviour of Perfect Gas and Kinetic Theory
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A jar has a mixture of hydrogen and oxygen gas in the ratio of . The ratio of mean kinetic energies of hydrogen and oxygen molecules is

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The average kinetic energy of molecules are
