|
|
2
|
A substance used for metalling of roads and is solid residue after fractional distillation
|
6
|
Fossil fuel made by burying of aquatic plants and animals
|
7
|
A gas used in routine cooking
|
8
|
Plants and trees on Land
|
9
|
I am fuel used for vehicles and not for cooking
|
|
|
|
|
1
|
Process in which wood of forests was converted into coal under high temperature and pressure
|
3
|
Gas found above oil in oil wells
|
4
|
It is a porous, black and almost pure form of carbon
|
5
|
Combustible substance
|
|
|