Which of the following is not correctly matched ?A. `Ni^(2+)-` Red precipitate with `DMG `and ammonia solutionB. `Zn^(2+)-` While precipitate with `H_(2)S` gas in presence of `NH_(4)OH` and `NH_(4)Cl`C. `Al^(3+)-` Infusible green mass is obtained in cobalt nitrate test.D. `Pb^(2+)-` Yellow precipitate with both `KI` and `K_(2)CrO_(4)` reagents.

Which of the following is not correctly matched ?A. `Ni^(2+)-` Red pre

1.	Which of the following is not correctly matched ?A. `Ni^(2+)-` Red precipitate with `DMG `and ammonia solutionB. `Zn^(2+)-` While precipitate with `H_(2)S` gas in presence of `NH_(4)OH` and `NH_(4)Cl`C. `Al^(3+)-` Infusible green mass is obtained in cobalt nitrate test.D. `Pb^(2+)-` Yellow precipitate with both `KI` and `K_(2)CrO_(4)` reagents.
Answer» Correct Answer - 3 `Al_(2)O_(3)+CoOoverset(Delta)rarrAl_(2)O_(3).CoO(` blue mass `). ZnO.CoO` is green in colour.

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