Identify compound A used in following reaction. Benzoic acid…

Identify compound A used in following reaction. Benzoic acid $\underset{\Delta}{\stackrel{A}{\longrightarrow}}$ Benzoyl chloride + Phosphorous oxychloride + Hydrogen chloride
  1. $\mathrm{SO}_2 \mathrm{Cl}_2$
  2. $\mathrm{PCl}_3$
  3. $\mathrm{HCl}$
  4. $\mathrm{PCl}_5$

Asked in: MHT CET 2021 (20 Sep Shift 1)

Practice more Carboxylic Acid Derivatives questions on Aicharya