Q.

If the root-mean-square velocity of hydrogen molecule at a given temperature and pressure is 2 km/s, the root-mean-square velocity of oxygen at the same condition (in km/s) is 

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a

1.5

b

1.0

c

2.0

d

0.5

answer is B.

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Detailed Solution

 Vrms=3RTM V1V2=M2M12V2=322 V2=0.5km/s

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