There is N and S both are present in Lassaigne's extraction then what is the reason to form red colour?

There is N and S both are present in Lassaigne's extraction then what

1.	There is N and S both are present in Lassaigne's extraction then what is the reason to form red colour?
Answer» FERRIC thiocynate Ferricerocynide Ferric cynide Ferrous chloride Answer :A