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Question

The time taken for a certain volume of gas to diffuse through a small hole was 2 min. Under similar conditions an equal volume of oxygen took 5.65 minutes tp pass. The molecular mass of the gas is

A
32.0
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B
11.33
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C
4.0
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D
8.0
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Solution

The correct option is B 4.0
According to the problem:
rArO2=MO2MA
Implies that
=tO2tA
Hence,
32MA=5.652
Since,MA=4



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