Q.

The density of gas A is twice that of a gas B at the same temperature. The molecular weight of gas Bis thrice that of A. The ratio of the pressure acting on A and B will be:

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a

6: 1

b

2 : 5

c

7: 6

d

1: 4

answer is A.

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Detailed Solution

the given equation:

d=PMRT

PAPB=dAdB×mBmA=61

So, the correct answer will be  6 : 1

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