NEET UG CHEMISTRY MCQ: 13 TH GROUP ELEMENTS (P-BLOCK)

A compound $X$, of boron reacts with $\mathrm{NH}_3$ on heating to give another compound $Y$, which is called inorganic benzene. The compound $X$ can be prepared by treating $\mathrm{BF}_3$ with lithium aluminium hydride. The compounds $X$ and $Y$ are represented by the formulae