Question

what is coal in science?​

Answer 1

Answer:

Coal is a combustible black or brownish-black sedimentary rock with a high amount of carbon and hydrocarbons. Coal is classified as a nonrenewable energy source because it takes millions of years to form. Coal contains the energy stored by plants that lived hundreds of millions of years ago in swampy forests.

Explanation:

Coal is a naturally occurring black material which is a mixture of carbon and compounds of carbon-containing hydrogen, nitrogen, oxygen and sulphur. It is a major source of energy. Uses of coal are as follows: 1) It is used as a fuel for heating purposes in homes and industry.

Answer 2

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Coal is a fossil fuel. It contains carbon, hydrogen and oxygen. It also contains nitrogen, phosphorus and sulphur. It occurs in the solid state. It is of four types- peat, lignite, bituminous and anthracite.