See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

Blue coloured compound Red coloured compound         2 3 3 4 4 6 6 III II II III O , O g , Cu NH SO , KFe Fe CN , KFe Fe CN ,                   2 3 N O  x = 6 2 3 4 HgI ,Pb O 2 4 3 2 Ag CrO ,KO ,Cu O y = 5 CuO Black    2 5 3 3 C H BO colourless  2 4 CaC O white  z = 3