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Question

At STP the order of mean square velocity of molecules of H2,N2,O2 and HBr is-

A
H2>N2>O2>HBr
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B
HBr>O2>N2>H2
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C
HBr>H2>O2>N2
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D
N2>O2>H2>HBr
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Solution

The correct option is A H2>N2>O2>HBr
Vrms1M
Order of molecular weight
=H2<N2<O2<HBr
order of Vrms=H2>N2>O2>HBr

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