The final major product obtained in the following sequence of reaction is

Which is the most reactive hydrocarbon among the following?

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.

Acetylene cannot react with which of the following?

What happens when a mixture of acetylene and hydrogen is passed over heated Lindlar's catalyst?

In the following reaction,compound $A$ is formed,which reacts with $B$ to give product $C$. Identify $A$ and $B$.