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Question

Two separate bulbs contain ideal gases A and B at the same temperature. The density of gas B is half of A while molar mass of gas B is twice of gas A. The ratio of pressure of A to that of B is:

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Solution

PM=dRT
For A,PAMA=dA.RT
For B,PB2MA=12dA.RT
PAPB=2dA.RTdA.RT×2MAMA=4
Ans-4

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