When thiourea is fused with sodium and then extracted with water the species which is not present in sodium extract is a) S-2 b)No3- c) CN- d)CNS-
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Azo benzene
Azo benzene :- It has formula C12H10N2. It contains both carbon and nitrogen so it reacts with sodium. It leads to formation of sodium cyanide. It does not give positive lassaigne's test.
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