Which of the following compound(s) will give blue colour when it is converted into Lassaigne's extract and $FeSO_{4}$ is added followed by $FeCl_{3}$ .

Question

Which of the following compound(s) will give blue colour when it is converted into Lassaigne's extract and FeSO 4 ​ is added followed by FeCl 3 ​ .

TestHub · Accepted Answer

(I) does not contains N hence no blue color (II) gives red color as it has N as well as S since it will form SCN (-) (IV) Inorganic compound do not give Lassaigne's test for Nitrogen

Chemistry - PRACTICAL ORGANIC CHEMISTRY Question with Solution | TestHub

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