1.

Redish brown (choclate) ppt are formed with

Answer»

`CU^(+2)` and `[Fe(CN)_(6)]^(-2)`
`Ba^(+2)` and `SO_(4)^(-2)`
`Pb^(+2)` and `I^(-)`
`Ag^(+)` and `I^(-)`

ANSWER :A


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