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A gas mixture contains acetylene and car...

A gas mixture contains acetylene and carbondioxide. 20 lit of this mixture requires 20 lit of oxygen under the same conditions for complete combustion. The percentage by volume of acetylene in the mixture is

A

`50%`

B

`40%`

C

`60%`

D

`75%`

Text Solution

Verified by Experts

The correct Answer is:
B
`C_(2)H_(2)+(5)/(2)O_(2)rarr2CO_(2)+H_(2)O`
`"x "(5)/(2)x=20impliesx=8"lit"`
% acetylene = `(8)/(20)xx100=40%`
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