Fill in the banks. (a) Fossil fuels are ________, ________and ________

1.	Fill in the banks. (a) Fossil fuels are ________, ________and _________. (b) Process of separation of different constituents from petroleum is called _________. (c) Least polluting fuel for vehicles is __________.
Answer» (a) Fossil fuels are coal, petroleum and natural gas. (b) Process of separation of different constituents from petroleum is called refining. (c) Least polluting fuel for vehicles is CNG.

Fill in the banks. (a) Fossil fuels are ____, and _. (b) Process of separation of different constituents from petroleum is called _. (c) Least polluting fuel for vehicles is ______.

Answer»

(a) Fossil fuels are coal, petroleum and natural gas.

(b) Process of separation of different constituents from petroleum is called refining.