See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

  2 2 7 2 4 2 2 2 4 2 Orange red vapours NaCl K Cr O H SO CrO Cl K SO H O        2 2 2 4 Yellow solution CrO Cl NaOH Na CrO NaCl        2 4 3 4 3 2 Yellow ppt. Na CrO Pb CH COOH PbCrO CH COONa   