Question

What is coal ? Explain the different types of coal and its uses

Answer 1

caol is something black in colour which is prepared after burning wood

Answer 2

★$\underline{\boldsymbol{Coal\:and\:Its\:Types}}$

Coal is a readily combustible black rock or a brownish black sedimentary rock. Coal is one of the fuels that has been used for used for cooking food. It produces a lot of smoke and foul-smelling gases which cause air pollution.

• Coal is the largest source of energy used for the generation of electricity.

There are four types of coal:

$\underline{\underline{\rm\red{Peat}}}$is a soft brown substance that is made up of 30% carbon. It is the earliest stage during the formation of coal.

$\underline{\underline{\rm\red{Lignite}}}$has a carbon content of about 38%; it is regarded as the lowest grade of coal. It has been maimly used for electric power generation.

$\underline{\underline{\rm\red{Bituminous\:coal}}}$has about 65% of carbon; it is used for power generation and making another type of fuel, called coke.

$\underline{\underline{\rm\red{Anthracite}}}$is hard coal and contains over 90% of carbon. It is regarded as the highest grade of coal.

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