1.

Thereagents NH_(4)Cl and NH_(3) will precipitate :

Answer»

`Ca^(2+)`
`Al^(2+)`
`Bi^(2+)`
`MG^(2+)`

Solution :`AI^(3+)` and `Br^(3+)` are PRECIPITATE as their hydroxides `[AI(OH)_(3),Bi(OH)_(3)]` with ammoniumhydroxide in the PRESENCE of ammonium CHLORIDE


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