See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

     5 6PCl 4 4 2 10 3 P O Excess P O POCl      5 6PCl 4 2 4 6 3 3 P Excess O P O POCl PCl     5 3PCl 4 3 3 4 3 P Conc. HNO H PO POCl HCl     4 2 2 2 5 P White SO Cl SO PCl 5 PCl  2 3 SOCl POCl