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One litre of a gaseous mixture of two ga...

One litre of a gaseous mixture of two gases mixture of two gases effuses in 311 seconds while 2 litre of oxygen takes 20 minutes. The vapour density of gaseous mixture containing `CH_(4)` and `H_(2)` is:

A

4

B

4.3

C

3.4

D

5

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The correct Answer is:
b
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