1.

If two gases are taken at same temperature, the density of a gas A is three times that of gas B, while molecular mass of gas B is twice that of A. The ratio of pressure of A and B will be:

Answer»

<P>`(1)/(6)`
6
`(2)/(3)`
`(3)/(2)`

SOLUTION :PM=dRT
`(PM)/(d)=` constant (for constant T)
`(P_(A)M_(A))/(d_(A))=(P_(B)M_(B))/(d_(B))`
`(P_(A))/(P_(B))=(d_(A))/(d_(B))xx(M_(B))/(M_(A))=3xx2=6`


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