605 words essay on the importance of coal
Coal is an important non-renewable source which plays a crucial role in the development of our country. About 6Q% of our commercial energy is available from coal and lignite.
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Why is water, as a source of energy, more important than coal and petroleum?
Sources of energy are categorised as conventional and non-conventional. Coal, petroleum, natural gas, and electricity (both thermal and hydel) are conventional while solar; wind, tidal, geothermal, atomic energy and biogas are non-conventional sources of energy.
What is the difference between Anthracite Coal and Bituminous Coal?
Anthracite coal contains more than 80% carbon. Bituminous coal contains 60% to 80% carbon.
How was coal formed ?
Coal is found deep inside the earth in the form of coal beds. Coal was formed by the anaerobic thermal degradation of the cellulosic material of big plants/ trees which got buried inside the earth millions years ago.
What is meant by destructive distillation of coal ?
Coal is not pure carbon. It is a mixture of a large no. of complex organic compounds. On heating strongly in the absence of air, coal gives many useful products.
Why is coke better fuel than coal ?
Coal and coke both are as fuels. But, coke is considered to be a better fuel than coal because of the following reasons:
What is coal tar ?
The black tarry material obtained during the destructive distillation of coal is called coal tar. Coal tar is a highly viscous liquid with an unpleasant odour. Actual composition of coal tar depends upon the variety of coal used, and the temperature of distillation.