Select the correct statements with respect to the magnanese nitrate solution in water:

Options

A. It gives pink precipitate of `Mn(NH_(4))PO_(4).7H_(2)O` with `Na_(2)HPO_(4)` in the presence of ammonia solution.
B. It gives white precipitate of `Mn(OH)_(2)` with sodium hydroxide which rapidly oxidises on exposure to air, becoming brown.
C. On boiling with `PbO_(2)` and concentrated `HNO_(3)`, violet-red coloured product is obtained.
D. It gives white precipitate of maganese (II) sulphide with ammonium sulphide solution.

Answer

A, B, C

Explanation

(c) `HMnO_(4)` (Violet colour) is formed.
(d) `MnSdarr` (Buff colour ppt.)