1.

A white precipitate is obtained when

Answer»

a SOLUTION of `BaCl_(2)` is treated with one of `Na_(2)SO_(3)`
a solution of `NaAlO_(2)` is HEATED with `NH_(4)CI`
`H_(2)S` is passed through a solution of `ZnSO_(4)`
a solution of `ZnSO_(4)` is treated with one of `Na_(2)CO_(3)`

Solution :Due to formation CORRESPONDING compound


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