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A vessel contains a mixture of one mole of oxygen and two moles of nitrogen at 300K. The ratio of the average rorational kinetic energy per `O_2` molecules to that per `N_2` molecules is

A

`1 : 1`

B

`1 : 2`

C

`2 : 1`

D

depends on the moment of inertia of the two molecules

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SL ARORA-Kinetic Theory of gases-Example
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