Write a short note on different grades of coal.
Answers
Answer:
Grades of coal occur in 4 different types
1) Lignite
2) Bituminous
3) Sub- Bituminous
4) Anthracite
Coal is a sedimentary rock mostly consists of carbon and other elements also.
Anthracite is a hard coal due to its high heat content.
Lignite coal contains a high amount of water, and it is very soft.
If we can apply pressure to the lignite when bituminous coal is formed.
Coals are formed from million of years ago they are considered to be fossil fuels. Coals are nonrenewable resources.
Answer:
Anthracite, Bituminous, Lignite, and Peat are different grades of coal.
Explanation:
Anthracite is the high grade coal which contains 80 to 95 % of carbon content. Bituminous coal is the most widely used coal grade and its carbon content varies from 40 to 80% of carbon content. Lignite is the brown coal, it contains 40 to 55% of carbon content largely found over the Neyveli region of Tamil Nadu. Peat is the lowest grade coal which contain high moisture and less than 40% of carbon content.