Question

Two organic compound A and B both containing only carbon and hydrogen, on quanctities analysis gave the same percentage composition by weight:
`C=(12//13)xx100%, H=(1//3)xx100%`
A decoulourises bromine water but B does not. A and B respectively are
A. `C_(2)H_(2) and C_(6)H_(6)`
B. `C_(6)H_(6)and C_(2)H_(6)`
C. `C_(2)H_(4) and C_(2)H_(6)`
D. `C_(2)H_(4) and C_(2)H_(6)`

Answer 1

Correct Answer - A
E.f. of hydrogcarbo=CH
A is `C_(2)H_(2) and B is C_(6)H_(6)`
`underset("Acetylene")(HC)=CH+2Br to CHBr_(2)-CHBr_(2)`
`underset("Benzene")(C_(6)H_(6))+Br_(2) to "No reaction"`