Question

An unknown compound 'A' has a molecular formula $C_4{H}_6$. When 'A' is treated with excess of $B{r}_2$ a new substance with molecular formula $C_4{H}_{6}B{r}_2$ formed. 'A' forms a white precipitate with Tollen's reagent. Then 'A' may be

• A. but-1-yne
• B. but-2-yne
• C. but-1-ene
• D. but-2-ene

Answer 1

The correct option is A

but-1-yne

A has acidic hydrogen so it is 1 - butyne