Ans: Hydrocarbons are those organic compounds that are made of carbon and hydrogen. They generally exist as colorless gases with faint odors. The following are the major types of hydrocarbons:Saturated Hydrocarbons: They consist of carbon-carbon and carbon-hydrogen atoms which are linked together by a single bond. They consist of carbon atoms whose hybridization is sp3. They are also known as alkanes.Unsaturated Hydrocarbons: They consist of a single, double or triple bond between the two carbon atoms. Compounds with double bonds are known as alkenes and compounds with triple bonds are known as alkynes. Cycloalkanes: These compounds consist of carbon rings with hydrogen atoms attached to the ring. Aliphatic Hydrocarbons: These compounds form a straight chain structure.Aromatic Hydrocarbons or Arenes: These compounds consist of a ring structure. These rings can be one or many. Alicyclic Hydrocarbons: These hydrocarbons have rings. The carbon atoms in these hydrocarbons can have a hybridization of Sp, Sp2, or Sp3.