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Nessler's reagent is used to detect...

Nessler's reagent is used to detect

A

`CrO_(4)^(2-)`

B

`PO_(4)^(3-)`

C

`MnO_(4)^(-)`

D

`NO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Nessler's reagent gives red precipitate with `NH_(4)^(+)`
`NH_(4)Cl+2K_(2)[HgI_(4)]+4KOHtounderset("Iodide of Millon's base (brown ppt)")(NH_(2)-HG-O-HG-I)+7KI+KCl+3H_(2)O`
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