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Which of the following combinations in a...

Which of the following combinations in an aqueous medium will give a red colour or precipitate

A

`Fe^(3+) + SCN^(-)`

B

`Fe^(3+) + [Fe(CN)_(5)]^(3-)`

C

`Ni^(2+)` dimethylglyoxime + `NH_(3)`

D

`Co^(2+) +SCN^(-)`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
`Fe^(3+) + SCN to` Red colour solution
`Fe^(+3) + [Fe(CN)_(5))^(3-) to` gives red colour solution
`Mn^(+2)` + dimethyl glyanime + `NH_(3) to` Red ppt
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