What is coal? Why is it widely used?
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What is coal? Why is it widely used?
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Answer:
What is coal?
-Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.
Why is it widely used?
-Used as fuel to generate electric power in the United States. In coal-fired power plants, bituminous coal, subbituminous coal, or lignite is burned. The heat produced by the combustion of the coal is used to convert water into high-pressure steam, which drives a turbine, which produces electricity.
Source: Go0gle
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Answer:
Coal is a important thing when we cook without fuel it gives us free fire and its is easy to cook
Explanation:
Why is it widely used? Because many people cant buy fuel and cant cook so they used coal also coal can easily be fired so they used coal