explain about the varieties of coal
Answers
Answer:
The four types of coal are peat, lignite, bituminous, and anthracite. ... Lignite has a higher heat content than peat but is still not the most desired form of coal. However, lignite makes up almost half of our known coal reserves. Bituminous coal is formed as more pressure is applied to lignite coal.
Answer:
Question :-
Explain about the varieties of coal.
Answer :-
Coal is one of the main sources of energy worldwide. The word 'coal' is derived from the old English term col that means 'the minerals of fossilised carbon' . Coal is a black coloured hard substance that contain carbon.
Varieties of coal :-
Depending upon the amount of carbon content, coal may be of four types :-
1. Peat :-
This is the most inferior and softest form of coal. Its carbon content is very low. It has a large amount of moisture and is not much suitable to be used as fuel. Its carbon content is 20-25%.
2. Lignite :-
Lignite is comparatively harder than peat, but still is very soft. Its carbon content is more than that of peat. It also have a very low amount of moisture. Its carbon content is 25-35%.
3. Bituminous :-
Its carbon content is even higher, as it is free from moisture and other impurities. That's why it may be used as fuel but it produces much pollution on burning. Its carbon content is 65-85%.
4. Anthracite :-
This is the highest grade coal. This is also known as hard coal. It has maximum amount of carbon. It produces a very little smoke and burns for a longer time. Its carbon content is 98%.