1.

Which of the following reaction(s) give(s) blue precipitate?

Answer»

`HG^(2+)+Co^(2+)+4SCN^(-) (AQ) RARR`
`CuSO_(4)+ "excess" NH_(3)rarr`
`FE(OH)_(3) +"excess" NaOH rarr`
`Cu^(2+)+KSCN rarr`

Answer :A::C


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