See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

    3 2 3 2 Buff colour when hot 1 Pb NO PbO 2NO O 2     3 2 2 2AgNO 2Ag O 2NO     2 4 2 FeC O FeO CO CO       4 2 2 yellow when hot ZnSO ZnO SO O    