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For the given aqueous reactions, which o...

For the given aqueous reactions, which of the statements(s) is ( are) true ? Excess
`KI+K_(3)[Fe(CN)_(6)]overset("dilute"H_(3)SO_(4))(rarr)` brownish yellow solution `overset(ZnSO_(4))(rarr) white ppt + brownish yellow fil trate overset(Na_(2)S_(2)O_(3))(rarr)` colourless solution`

A

The first reaction is a redox reaction

B

White precipitate is `Zn_(3)[Fe(CN)_(6)]_(2)`

C

Addition of filtration to starch solution gives blue colour

D

White precipitate is soluble in NaOH solution

Text Solution

Verified by Experts

The correct Answer is:
A,C,D
Brownish yellow solution is `K_(4)[Fe(CN)_(6)]`
White ppt is `K_(2)Zn[Fe(CN)_(6)]` or
`K_(2)Zn_(3)[Fe(CN)_(6)]_(2)&` Brownish yellow filterate is `I_(2)`.
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