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The density of a gas a is twice that of ...

The density of a gas a is twice that of gas B. Molecular mass of A is half of the molecular of B. The ratio of the partial pressures of A and B is :

A

`(1)/(4)`

B

`(1)/(2)`

C

`(4)/(1)`

D

`(2)/(1)`

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A, B, C, D
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