Chemistry - Polymer Question with Solution | TestHub

* Gas $X$ is acetylene ($C_2{H}_2$), which is generated by reacting calcium carbide ($Ca{C}_2$) with acid.

* Product $P_2$ is PVC (Polyvinyl chloride), produced by adding one equivalent of $HCl$ to acetylene to form vinyl chloride ($P_1$), followed by polymerization.

* Product $P_3$ is ethylene glycol, a dihydroxy alcohol formed via the controlled hydrogenation of acetylene into ethene, followed by reaction with cold, dilute $KMn{O}_4$.

* Product $P_4$ is Glyptal, which is a polymer created through the condensation reaction between ethylene glycol ($P_3$) and phthalic acid.

* Statement (D) is incorrect because benzene can be easily synthesized through the cyclic trimerization of acetylene gas ($X$) over a red-hot iron tube.