Chemistry - CHEMICAL BONDING Question with Solution | TestHub

Option A: Hydrolysis of $\mathrm{Xe}{\mathrm{F}}_4$ involves disproportionation, forming $\mathrm{Xe}{\mathrm{O}}_3$, $\mathrm{Xe}$, and $\mathrm{HF}$. So, statement A is correct.

Option B: $\mathrm{PC}{\mathrm{l}}_3$ hydrolysis yields ${\mathrm{H}}_3\mathrm{P}{\mathrm{O}}_3$ (phosphorous acid), which exists in tautomeric forms. So, statement B is correct.

Option C: Hydrolysis of $\mathrm{NC}{\mathrm{l}}_3$ produces $\mathrm{N}{\mathrm{H}}_3$ and $\mathrm{HOCl}$. Thus, the statement that $\mathrm{HOCl}$ is NOT formed is incorrect.

Option D: $\mathrm{C}{\mathrm{H}}_4$ is a stable molecule and does not undergo hydrolysis under normal conditions. So, statement D is correct.

Therefore, the INCORRECT statement is C.