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40mL gaseous mixture of CO, CH(4) and Ne...

40mL gaseous mixture of `CO, CH_(4)` and Ne was exploded with 10mL of oxygen. After treatment with KOH the volume reduced by 9mL and again on treatment with alkaline progallol the volume further reduced by 1.5mL. Percentage of `CH_(4)` in the original mixture is:

A

22.5

B

77.5

C

7.5

D

15

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The correct Answer is:
D
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