Which of the following statements (s) is (are) correct with reference to the ferrous and ferric ions?
(a). `Fe^(3+)` gives brown colour with potassium ferricyanide.
(b). `Fe^(2+)` gives blue precipitate with potassium ferricyanide.
(c). `Fe^(3+)` gives red colour with potassium thiocyanate.
(d). `Fe^(2+)` gives brown colour with ammonium thiocyanate.

Options

A. `Fe^(3+)` gives brown with potassium ferricyanide
B. `Fe^(3+)` gives blue precipitate with potassium ferricyanide
C. `Fe^(3+)` gives red colour with potassium sulphocyanide
D. `Fe^(2+)` gives brown olour with potassium sulphocyanide

Explanation

`Fe^(3+)` produces red colouration with `KSCN` but `Fe^(2+)` does not give brown colour with `KSCN.
Therefore, (D) option is correct