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Question

Fill in the blanks:

(a) Fossil fuels are ______, ______ and ______
(b) Process of separation of different constituents from petroleum is called _____.
(c) Least polluting fuel for vehicle is _____.

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Solution

a) 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.

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