ESS
Grade-10
Easy
Question
Which coal is used in thermal power plants to generate electricity?
- Bog Coal
- Brown Coal
- Lignite
- Bituminous
Hint:
Since lignite is of inferior quality and contains a lower amount of carbon, it is used in thermal power plants.
The correct answer is: Bituminous
- Due to the poor energy density of lignite, coal is burned close to the mines (known as my mouth operations).
- This is done to maximize coal output while minimizing the energy required to transport it.
- Lignite emits more carbon dioxide than tougher black coals because of its high moisture content and low carbon concentration.
- The coal is burned and used in commercial boilers in these power facilities.
- In these boilers, lignite coal is used to produce electricity in the amount of 79% and synthetic natural gas in the amount of 13.5%. Only 7.5% of the total is used to make various fertilizer products.
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