write the process of coal formation ?
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Answers
Answer:
Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. ... As a fossil fuel burned for heat, coal supplies about a quarter of the world's primary energy and two-fifths of its electricity.
★ QUESTION :
Write the process of coal formation.
ANSWER :
The coal is made up of dead and decaying plants and animals which is burnt deep under the earth about to millions of years and depending on the temperature and pressure conditions, and the time period for which Fossil remained burried under the surface of Earth, different varieties of coal have been formed.
Different types of coal are :
Peat , Lignite, bituminous and Anthracite.
These different types of coal differ from each other in the terms of their content of volatile material and the percentage of carbon, Moisture and other elements present in them.
Peat : This is a soft brown substance that is made up of 30% Carbon. It is the earliest stage during the formation of the coal.
Lignite : This has a carbon content of about 38% it is regarded as the lowest grade of the coal. It has been used mainly for electric power generation (NTPC).
Bituminous : This has 65% carbon ; it is used for power generation and for making another type of fuel called coke.
Anthracite : This is a hard coal and contains over 90% carbon. It is regarded as the highest grade of the coal.