Given below are two statements: Statement I: Sulphanilic acid gives esterification test for carboxyl group. Statement II: Sulphanilic acid gives red colour in Lassigne’s test for extra element detection. In the light of the above statements, choose the most appropriate answer from the options given below:

Step-by-step solution

Sulphanilic acid is p-amino benzene sulphonic acid. It has no –COOH group hence no esterification test for carboxyl group. But it has sulphur, and nitrogen atom hence gives red colour in Lassigne's test for extra element detection. Hence, statement I is incorrect but statement II is correct.