Fill in the blanks.

(a) Fossil fuels are _________, _________ and _________.

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

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(c) Least polluting fuel for vehicle is _________.

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo