NCERT Exercise 8.21 - Organic Chemistry – Some Basic Principles and Techniques
Question: Describe Lassaigne's test for N, S and halogens.
Answer: Sodium fusion converts covalent N/S/X into ionic CN-, S2- and X-; aqueous extract is then tested with the appropriate reagent.
Full step-by-step NCERT solution with diagrams on Something by Zero.