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Two oraganic compounds X and Y on analys...

Two oraganic compounds X and Y on analysis gave the same percentage composition , namely, `C = (12//13) xx 100%` and bromine water while compound Y does not. The two compounds X and Y may be respectively.

A

Acetylene and ethylene

B

Acetylene and benzene

C

Ethylene and benzene

D

Toluene and benzene

Text Solution

Verified by Experts

The correct Answer is:
B
`C: H =(12 xx 100)/(13 xx 12) : (1 xx 100)/(13 xx 1) = 1 : 1`
Empirical formula = CH Since X decolourises bromine water, but Y does not, therefore, `X = C_(2)H_(2)` and `Y = C_(6)H_(6)`
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