See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

    2 4 H SO 2 2 7 2 2 2 4 2 Red vapour Small amount NaCl K Cr O CrO Cl Na SO Cl       2 2 2 4 Yellow sol. CrO Cl NaOH Na CrO NaCl      2 4 3 2 4 Brick red Na CrO AgNO Ag CrO        2 4 3 4 2 Yellow Na CrO Pb CH COO PbCrO   