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InterviewSolution
| 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 precipitate of `[Cu(NH_(3))_(4)]^(2+)`C. deep blue precipitate of `Cu(NO_(3))_(2)`D. deep blue percipitate of `Cu(OH)_(2).Cu(NO_(3))_(2)` |
| Answer» Correct Answer - B | |