NCERT Exercise 8.25 - Organic Chemistry – Some Basic Principles and Techniques

Question: Why is HNO3 used before AgNO3 in Lassaigne's test for halogens?

Answer: HNO3 destroys interfering CN- and S2- ions, preventing false AgCN/Ag2S precipitates.

Full step-by-step NCERT solution with diagrams on Something by Zero.