1.

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

Answer»

`CUS gt ZnS gt Na_(2)S`
`ZnS gt Na_(2)S gt CuS`
`Na_(2)S gt CuS gtZnS`
`Na_(2)S gt ZnS gt CuS`

SOLUTION :No salts are highly soluble.
Hence,(D) is the correct ANSWER.


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