This video lecture from Aromatic HydroCarbons (F.Sc. second year Chemistry) covers: the nomenclature of benzene derivatives or aromatic compounds based on the IUPAC standards. The steps include the identification of parent ring and its numbering for the case of monosubstituted, disubstituted and polysubstituted benzene rings. The priority order of various functional groups is discussed in detail. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.