Methane:

 Methane is a saturated hydrocarbon. It is the simplest and the first member of the alkane series. It is also known as marsh gas because it is found in swamps or marshy land where it is produced by bacterial decomposition of complex vegetables and animal matters.                        

Molecular formula of methane: CH₄ 

Uses of methane are:

1. It is used as a gaseous fuel in industries and household works.
2. It is used for making printing ink.