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Tick True/False against the following statements. (a) Fossil fuels can be made in the laboratory. (b) CNG is more polluting fuel than petrol. (c) Coke is almost pure form of carbon. (d) Coal tar is a mixture of various substances. (e) Kerosene is not a fossil fuel

Tick True/False against the following statements. (a) Fossil fuels can be made in the laboratory. (b) CNG is more polluting fuel than petrol. (c) Coke is almost pure form of carbon. (d) Coal tar is a mixture of various substances. (e) Kerosene is not a fossil fuel Correct Answer (a), (b), (e) are false & (c), (d) are true

Concept:

Fossil Fuels:

  • Fossil fuels are formed by natural processes such as the anaerobic decomposition of buried organisms under heat and pressure.
  • Fossil fuels like coal, petroleum, natural gas contain high percentages of carbon.
  • Fossil fuels are non-renewable resources and must be burned to release their energy.
  • It releases sulphur, nitrogen, carbon, etc. gases into the atmosphere which causes the greenhouse effect and pollution.

Fuel: The sources of energy for domestic and industrial purposes are mainly wood, charcoal, petrol, kerosene, etc. These substances are called fuels.

  • A good fuel is one that is readily available, cheap, burns easily in the air at a moderate rate, and produces a large amount of heat.
  • Petroleum is extracted from crude oil.
  • With the help of fractional distillation of crude oil, not just petroleum but also a large number of by-products are extracted.
  • Byproducts of petroleum are Paraffin wax, Bitumen, Lubricating oil, etc.
  • Like Petroleum, gasoline, Naptha, paraffin, Diesel, Fuel oil, Lubricating oils, Bitumen, and some solid carbons.

Additional Information

S.No. Constituents of Petroleum Uses
1 Petroleum Gas in Liquid form Fuel for home and industry (LPG)
2 Petrol Motor fuel, aviation fuel, solvent for dry cleaning
3 Kerosene Fuel for stoves, lamps and for jet aircrafts
4 Diesel Fuel for heavy motor vehicles, electric generators
5 Lubricating oil Lubrication
6 Paraffin wax Ointments, candles, vaseline etc.
7 Bitumen Paints, road surfacing

 

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