AIPMT PRELIMS 2000 Chemistry Structure and Properties of Amines MCQ Question

N⁻methyl aniline is an aromatic amine where a methyl group is attached to the nitrogen atom of the aniline structure. The presence of the methyl group affects the basicity of the amine. In this case, the methyl group is an electron-donating group, which increases the electron density on the nitrogen atom, making it a stronger base compared to aniline. Therefore, the correct structure that represents N⁻methyl aniline is option (2). The other options do not correctly depict the structure of N⁻methyl aniline, either by misplacing the methyl group or by altering the aniline structure. Hence, option B is correct because it accurately represents the molecular structure of N⁻methyl aniline.