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Fill in the following blanks with suitable words:
(a) Fossil fuels are…………and…….
(b) Coal contains mainly……………
(c) The slow process of conversion of dead vegetation into coal is called……………
(d) The process of separation of different constituents from petroleum is called………………
(e) The least polluting fuel for vehicles is…….
(f) The burning of fossil fuels causes air………….and also leads to global……………
(a) Fossil fuels are coal, petroleum and natural gas.
(b) Coal contains mainly carbon.
(c) The slow process of conversion of dead vegetation into coal is called carbonisation.
(d) The process of separation of different constituents from petroleum is called refining.
(e) The least polluting fuel for vehicles is CNG.
(f) The burning of fossil fuels causes air pollution and also leads to global warming.
Updated on: 10-Oct-2022
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