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When coal is being burnt how much % of ash is formed compared to the whole amount?(a) 10-20%(b) 40-50%(c) 25-35%(d) 4-10%This question was posed to me in an online interview.The query is from Cool and Ash Handling System topic in division Steam Power Plant of Energy Engineering

Answer»

The correct OPTION is (a) 10-20%

For explanation I would SAY: The coal AVAILABLE in nature already contains some percent of ash and when it is burnt. Due to its brittle nature more amount of ash is produced.And coal is one of the largest types of industrial waste generated. For environmental benefits, this coal ash is reused as a type of by-product in DIFFERENT types of industries.



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