A.Formation of soluble complex by dilute solution of✓ Correct
B.Formation of soluble complex by dilute solution of
C.Roasting followed by the self reduction
D.Roasting followed by electrolytic reduction
Explanation
O2 oxidases silver to silver (l) ion which then produces soluble complex with CN– ions. 2 2 2 2 2 4 1 2 4 2 2 2 2 -> Ag NaCN O H O Na Ag CN NaOH Na Ag CN Zn Na Zn CN Ag