Question

what do u mean my coal in brief

Answer 1

a type of black mineral that is dug (mined) from the ground and burned to give heat

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Answer 2

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, sulphur, oxygen and nitrogen. Some iron and steel making and other industrial processes burn coal.

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