A compound `(A)` is used in paints instead of salts of lead.Compound(A) is obtained when a white compound `(B)` is strongly heated . Compound `(B)` is insoluble in water but dissolves in sodium hydroxide forming a solution of compound `(C )` the compounds `(A)` on heating with coke gives a metal `(D)` and a gas `(E)` which burns with blue flame . `(B)` also dissolves in ammonium sulphate solution mixed with ammonium hydroxide. solution of compound `(A)` in dilute `HCl` gives a bluish white//white precipitate `(F)` with excess of `(F)` with excees of `K_(4)[Fe(CN)_(6)]` identify `(A)` to `(F)` and explain the reactions.

Explanation

`Zn(OH)(B)undersettoDeltaZnO(A)+H_(2)O`
` Zn(OH)_(2)(B)downarrow+2OH^(-)to[Zn(OH)_(4)]^(2-)(C)("soluble complex").ZnO(A)+CundersettoDeltaZn(D)+CO(E)`
`Zn(OH)_(2)(B)+4NH_(3)to[Zn(NH_(3))_(4)]^(2+)("soluble complex")+2OH^(-)`.
`ZnO+2HCl to ZnCl_(2)+H_(2)O`.
`3ZnCl_(2)+2K[Fe(CN)_(6)] to K_(2)Zn_(3)[Fe(CN)_(6)]_(2)downarrow("bluish white//white")` (F)+6KCl`.