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Q 4. 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 __________.
Answers (2)
(a) Fossil fuels are coal and natural gas.
(b) Process of separation of different constituents from petroleum is called refining .
(c) Least polluting fuel for vehicle is CNG (compressed natural gas).
View full answer
(a) Fossil fuels are coal , petroleum and natural gas
(b) process of seperation of different constituents from petroleum is called refining
(c) least polluting fuel for vehicle is CNG
View full answer
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