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Coal and Petroleum

  • Non-renewable sources of energy are those that are consumed at a rate faster than that at which they are replenished. Example: Fossil fuels.
  • Fossil fuels – Coal, petroleum and natural gas
    • Coal: It is a non-renewable source of energy made up of complex compounds of carbon, hydrogen and oxygen along with some free carbon and compounds of nitrogen and sulphur.
    • Petroleum:It is a dark coloured viscous liquid also known as crude oil or black gold. It is a complex mixture of many hydrocarbons with water, salt, earth particles and other compounds of carbon, oxygen, nitrogen and sulphur.We obtain petroleum by drilling oil wells into earth's crust at its reservoirs. The petroleum extracted from wells has to be purified to obtain different useful components.The pr…

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