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Rate of diffusion of LPG (a mixture of n...

Rate of diffusion of LPG (a mixture of n-butane and propane) is 1.25 times that of `SO_(3)` Hence, mole fraction of n-butane in LPG is

A

`0.75`

B

`0.25`

C

`0.50`

D

`0.67`

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