Question
{Sulphate of a metal 'M' (having amphoteric oxide) reacts with sodium hydroxide to form a white gelatinous precipitate. The chemical formula of the precipitate and metal 'M' respectively is a)Cu{(OH)}_2 , Cu} b) Na_2ZnO_2 , Zn c) CuO, Cu d)Zn{(OH)}_2 , Zn