1.

In Lassaigne's test, when both N and S are present blood red colour is obtained. This is due to the formation of

Answer»

FERRIC ferrocyanide
ferric cyanide
ferric thiocyanate
ferric hydroxide.

Solution :`Na + C + N+S to Na CNS`
`Fe^(3+) SCN^(-) to [Fe (SCN)_3]`
Ferric thiocyanate


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