Fly ash is a contaminant in air due to:

thermal power plants

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nuclear power plants

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electrolytic refining of metals

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all of the above

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Solution

The correct option is A thermal power plants
Fly ash is one of the residues generated in combustion, and comprises the fine particles that rise with the flue gases. Ash which does not rise, is termed as bottom ash. In an industrial context, fly ash usually refers to ash produced during combustion of coal.

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Similar questions

Fly ash in air reduces visibility.

Which one of the following statements about power stations is not true ?

(a) hydroelectric power stations use water to drive turbines

(b) in a power station, turbines drive generators

(d) in hydroelectric power stations and thermal power stations, alternators produce electricity

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