Question

CNG is less pollution why

Answer 1

Being a gaseous fuel, CNG mixes easily and evenly in air. ... CNG emits significantly less pollution directly than gasoline or oil when combusted (e.g., carbon dioxide (CO2), unburned hydrocarbons (UHC), carbon monoxide (CO), nitrogen oxides (NOx), sulfur oxides (SOx) and PM (particulate matter)

Answer 2

Heya!!
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CNG stands for Compressed Natural Gas. It is considered to be an environmentally "clean" alternative to those fuels. It is made by compressing methane (CH4) extracted from natural gas. It is stored and distributed in hard containers, usually cylinders.