For the given aqueous reaction which of the statement(s) is (are) true?

Options

A. The first reaction is a redox reaction
B. White precipitate is `Zn_(3)[Fe(CN)_(6)]_(2)`
C. Addition of filtrate to starch solution gives a blue colour.
D. White precipitate is soluble in `NaOH` solution

Answer

A,C,D

Explanation

`(D)` with `NaOH`
`K_(2)Zn[Fe(CN)_(6)] + NaOH to [Zn(OH)_(4)]^(2-)(aq)+[Fe(CN)_(6)]^(4-)(aq)`