Question

state reason dust is pollutant

Answer 1

Becoz dust pollutes air, so it may be considered as polutant, since anything which pollutes something may be considered as pollutant.

Answer 2

Hy there, Here's your answer...

DUST:-

All the particles of dust make it pollutant. Dust causes respiratory diseases, skin diseases, etc. PM is the term used for solid and liquid particles emmited in the air.
Some particles are large enought to be seen, some particles are are too small they can only be detected with an electron microscope.

Hope this will help you....
:)