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Prelims Mains
PRELIMS 2015 · ENVIRONMENT

With reference to ‘fly ash’ produced by the power plants using coal as fuel, which of the…

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2015 paper Environment

Question

With reference to ‘fly ash’ produced by the power plants using coal as fuel, which of the following statements is/are correct?

1. Fly ash can be used in the production of bricks for building construction
2. Fly ash can be used as a replacement for some of the Portland cement content of concrete
3. Fly ash is made up of silicon dioxide and calcium oxide only and does not contain any toxic elements.

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