GENERAL KNOWLEDGE

Detailed explanation-1: -Aromatic rings (also known as aromatic compounds or arenes) are hydrocarbons which contain benzene, or some other related ring structure. Benzene, C6H6, is often drawn as a ring of six carbon atoms, with alternating double bonds and single bonds: This simple picture has some complications, however.

Detailed explanation-2: -Aromatic hydrocarbons are compounds that contain benzene as part of their structure, also known as aromatic compounds. Benzene, with formula C6H6, is a cyclic hydrocarbon.

Detailed explanation-3: -Historically, benzene-like substances were called aromatic hydrocarbons because they had distinctive aromas. Today, an aromatic compound is any compound that contains a benzene ring or has certain benzene-like properties (but not necessarily a strong aroma).