1.

Identify the correct order of solubility of Na_(2)S, CuS and ZnS in aqueous medium :

Answer»

`Na_2S GT CUS gt ZNS`
`Na_2S gt Zns gt Cus`
`Cus gt Zns gt Na_2S`
`ZnS gt Na_2S gt CuS`

ANSWER :B


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