Question

Which from following functional groups has highest priority order for naming the poly functional compound?

Options

• − CN

• − CONH₂

• − C ≡ C −

• − NH₂

Answer 1

− CONH₂

Explanation:

IUPAC Priority Order (for given options)

 

− CONH₂ > − CN > − C ≡ C − > − NH₂

 

– CONH₂ ranks highest because it contains a carbonyl group (C=O), placing it in the carboxylic acid derivative category, which always ranks above nitriles, alkynes, and amines in IUPAC nomenclature.