Question

Which of the following produces fly ash?

(a) Steam power plant

(b) Thermal power plant

(c) Steel power plant

(d) Nuclear power plant

The question was posed to me in an online interview.

Query is from Environmental Chemistry in section Environmental Chemistry of Chemistry – Class 11

Answer 1

Correct choice is (b) Thermal power plant

For explanation I would say: Thermal power plants produce fly ash. Fly ash contains particles of silica, alumina, and oxides of iron, calcium, and magnesium, and toxic heavy metals like lead, cobalt, arsenic, and copper. The thermal power plants in India use bituminous coal and produce large quantities of ash.