Question

4.
Fill in the blanks.

(a) Fossil fuels are __________,___________ & ________
(b)Process of separation of different constituents from petroleum is called
____________.
(c) Least polluting fuel for vehicle is________​

Answer 1

Answer:

Coal, petroleum and natural gas are the fossil fuels because these are formed by the dead remains of animals and plants buried under the earth billions of years ago.

b)Refining− In this process, various petroleum products like gasoline, diesel etc are formed.

c) CNG− It is called compressed natural gas which is methane stored at high pressure.

Explanation:

I answer you then plz follow

Answer 2

4. a) Coal, petroleum and natural gas

b) refining

c) CNG

hope it helps u pls mark as brainliest