Science
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 …………… .
Coal & Petroleum
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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 vehicle is CNG.
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