Answer
1. Aliphatic hyrdrocarbons: Hydrocarbons which do not contain one or more benzene rings. Eg: Pyridine, Pyran, Thiophene
2. Aromatic hydrocarbons: Hydrocarbons which contain one or more benzene rings. Eg: Naphthalene
Work Step by Step
1. Aliphatic hyrdrocarbons: Hydrocarbons which do not contain one or more benzene rings. Eg: Pyridine, Pyran, Thiophene
2. Aromatic hydrocarbons: Hydrocarbons which contain one or more benzene rings. Eg: Naphthalene