In qualitative analysis when `H_(2)S` is passed through an aqueous solution of salt acidified with dil. HCl, a black precipitate is obtained. On boiling the precipitate with dil. `HNO_(3)`, it forms a solution of blue colour. Addition of excess of aqueous solution of ammonia to this solution givesA. deep blue precipitate of `Cu(OH)_(2)`B. deep blue solution of `[Cu (NH_(3))_(4)]^(2+)`C. deep blue solution of `Cu(NO_(3))_(2)`D. deep blue solution of `Cu(OH)_(2). Cu (NO_(3))_(2)`

In qualitative analysis when `H_(2)S` is passed through an aqueous sol

1.	In qualitative analysis when `H_(2)S` is passed through an aqueous solution of salt acidified with dil. HCl, a black precipitate is obtained. On boiling the precipitate with dil. `HNO_(3)`, it forms a solution of blue colour. Addition of excess of aqueous solution of ammonia to this solution givesA. deep blue precipitate of `Cu(OH)_(2)`B. deep blue solution of `[Cu (NH_(3))_(4)]^(2+)`C. deep blue solution of `Cu(NO_(3))_(2)`D. deep blue solution of `Cu(OH)_(2). Cu (NO_(3))_(2)`
Answer» Correct Answer - B It is the correct answer.

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