1.

Mohr's salt on dissociation in water gives

Answer»

POSITIVE test for `FE^(2+)`
positive test for `Fe^(2+) and SO_(4)^(2-)`
positive test for `Fe^(3+), SO_(4)^(2-) and NH_(4)^(oplus)`
positive test for `Fe^(2+), NH_(4)^(+) and SO_(4)^(2-)`

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