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The density of gas A is twice that of B ...

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`

Text Solution

Verified by Experts

The correct Answer is:
C
`d_(A) = 2d_(B) , 2M_(A) = M_(B), PM = dRT`
`(P_(A))/(P_(B)) xx (M_(A))/(M_(B)) = (d_(A))/(d_(B)) xx (RT)/(RT) rArr (P_(A))/(P_(B)) xx (1)/(2) = 2 rArr (P_(A))/(P__(B)) = (4)/(1)`
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