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Questions  

The rms velocity of a gas at a certain temperature is 2 times than that of the oxygen molecules at that temperature. The gas can be

a
H2
b
He
c
CH4
d
SO2

detailed solution

Correct option is C

vrms∝1M⇒v2v1=M2M1∴12=M232⇒M2=16Hence the gas is CH4 .

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