Fly ash is an environment pollutant produced by:

Question

Question

This question was previously asked in

OSSC JE (Civil) 2015 Official Paper

Answer 1

Explanation:

Fly ash:

It is a by-product of many thermal power stations and other plants using pulverized coal or lignite as a source of heat for boilers.
Fly ash or pulverized fuel ash (PFA) is the residue from the combustion of pulverized coal collected by mechanical or electrostatic separators from the flue gases or power plants.
It constitutes about 75 percent of the total ash produced.
The properties and composition of fly ash vary widely, not only between different plants but from hour to hour in the same plant.
Its composition depends on the type of fuel burnt and on the variation of load on the boiler.