Organic compounds composed of only carbon and hydrogen are called hydrocarbons.
True
Hydrocarbons are organic compounds which are made up of hydrogen and carbon atoms. The molecular formula for these compounds is CxHy.
The two main groups of hydrocarbons are
1. Saturated hydrocarbon: Containing C atoms joined by a single covalent bond. e.g: Alkanes
2. Unsaturated hydrocarbons: Containing C atoms joined by double or triple covalent bonds. e.g: Alkenes and Alkynes