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What are the harmful effects of using fossil fuels ?
Harmful effects of burning fossil fuels are :
(i) Burning of fossil fuels burn with smoky flame which cause in air pollution.
(ii) They also cause global warming because they produce green house gas carbon dioxide gas on burning.
Process of separation of different constituents from petroleum is called __________.
Least polluting fuel for vehicle is ________.
Fossil fuels can be made in the laboratory.
CNG is more polluting fuel than petrol.
Coke is almost pure form of carbon.
Coal-tar is a mixture of various substances.
Kerosene is not a fossil fuel.
Explain why fossil fuels are exhaustible natural resources?
Describe characteristics and uses of coke.
Explain the process of formation of petroleum.
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