what is coal? write its two usage?
Answers
its non renewable source of energy derived from coal mines.
Its was used to run trains few years back
Its used to produce electricity
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. ... Some iron and steel making and other industrial processes
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Uses of coal. Coal has many important uses worldwide. The most significant uses of coal are in electricity generation, steel production, cement manufacturing and as a liquid fuel. Steam coal - also known as thermal coal - is mainly used in power generation.