Question

“compounds containing carbon and hydrogen only” are called as?

Answer 1

Definition of organic compounds:

Any a large series of compounds in which one or more carbon atoms are covalently connected to atoms of other elements are called organic compounds.

A hydrocarbon is a group of organic compounds which consist only of Carbon and Hydrogen atoms.

All Alkanes Methane$\left({\mathrm{CH}}_4\right)$ and Alkenes Ethene$\left({\mathrm{C}}_2{\mathrm{H}}_4\right)$ are examples of hydrocarbons.