What is coal?
Coal is an exhaustible natural fossil fuel which is a tough, porous and black substance. It is almost pure form of carbon.
Why is CNG considered an eco-friendly fuel?
CNG is clean gas. On burning, it does not produce any smoke and leaves no ash. Therefore, CNG is considered eco-friendly fuel.
Which process converts dead vegetation into coal?
Carbonisation is the process which convert dead vegetation into coal.
Where in India is CNG found?
Tripura, Jaisalmer, Offshore of Mumbai and in Krishna Godawari Delta.
What is the name of the process of separating the different constituents of petroleum?
It is called refining.