1.

0.48 g of a volatile substance upon vapourisation gives 112 ml vapours at STP. Ratio of rate of diffusion of vapours of volatile substance to H_2(g) is (assume vapours behave ideally)

Answer»

`1`/`sqrt(12)`
`1`/`sqrt(48)`
`1`/`sqrt(18)`
`1`/`sqrt(72)`

Answer :2


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