Each comprehension given below is followed by some multiple choice questions. Each question has ...
0Each comprehension given below is followed by some multiple choice questions. Each question has one correct option. Choose the correct option.
Comprehension 1| During the detection of elements by Lassaigne's test, the covalent compounds are converted into ionic compounds by fusion with metallic sodium. The nitrogen, sulphur and halegens present in the organic compound are converted inte cyanides, sulphides and halides respectively which are then detected by their usual sests.
An organic compound containing \( \mathrm{N}, \mathrm{S} \) and \( \mathrm{O} \) as extra elements is fused with sodium metal and then extracted with water. The species which is not present in the solution of extract is
(A) \( \mathrm{CN}^{-} \)
(B) \( \mathrm{CNS}^{-} \)
(C) \( \mathrm{NO}_{3}^{-} \)
(D) \( \mathrm{S}^{2-} \)
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