$C_6H_5-C \equiv C-CH_3 \xrightarrow[H_2SO_4]{HgSO_4, H_2O} A$. The major product $(A)$ is:

Which of the following decolorizes $Br_2$ water solution?

An unknown compound $X$ is an unsaturated hydrocarbon. It reacts with $HgSO_4$ and $H_2SO_4$ to give compound $(B)$. Compound $(B)$ on oxidation gives compound $(C)$. Compound $(C)$ on reaction with $NaOH$ and soda lime gives methane. Identify $A$ (which is $X$),$B$,and $C$ by providing the chemical reactions.

Which reactants are used to prepare $cis$ and $trans$ alkenes from alkynes?

Which of the following is used to distinguish ethylene and acetylene?

$CH \equiv CH + HBr \to X$,the product $X$ is: