1.

The density of gas `A` is twice that of B at the same temperature the molecular weight of gas B is twice that of A. The ratio of pressure of gas A and B will be :A. `1 : 6`B. `1:1`C. `4 : 1`D. `1 : 4`

Answer» Correct Answer - C
`d_(A) = 2 d_(B) , 2 M_(A) = M_(B) `,
`because PM = d RT `
`therefore (P_(A))/(P_(B)) xx (M_(A))/(M_(B)) = (d_(A))/(d_(B)) xx (RT)/(RT)`
`implies (P_(A))/(P_(B)) xx (1)/(2) = 2 `
`(P_(A))/(P_(B)) = (4)/(1)`


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