CNG is majorly composed of which of the following organic compound?

Methane

The correct answer is option 1. Methane.

CNG (Compressed Natural Gas) is majorly composed of: Methane Compressed Natural Gas (CNG) is primarily composed of methane \((CH_4)\), which is a hydrocarbon and the main component of natural gas. Methane is a clean-burning fuel and a major constituent of CNG used as an alternative to traditional fuels in vehicles and industrial applications. Propane and butane are other hydrocarbons, but they are not the major components of CNG.