1.

The red-brown precipitate formed in step A contains

Answer»

`Hg_(2)[Fe(CN)_(6)`
`Cd_(2)[Fe(CN)_(6)]`
`Cu_(2)[Fe(CN)_(6)]`
`Pb_(2)[Fe(CN)_(6)]`

Solution :C) Red PRECIPITATE due to `Cu_(2)[Fe(CN)_(6)]`


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