what is coal? and it's uses
Answers
Answer:
Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production.
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What is coal ?
Coal is a hard rock which can be burned as a solid fossil fuel. It is mostly carbon but also contains hydrogen, sulphur, oxygen and nitrogen. It is a sedimentary rock formed from peat, by the pressure of rocks laid down later on top. ... Also wood heated in an airless space can make charcoal, which is like coal.
What are used of coal ?
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. Coking coal - also known as metallurgical coal - is mainly used in steel production.