McqkartGet appPractise

Which of the following are considered air pollutants? Choose the correct answer from the options given below.

1.Fog
2.Soot
3.Smoke
4.Smog
5.Fly ash
A1, 2, 4 only
B2, 4, 5 only
C3, 4, 5 only
D1, 2, 5 only ✓ Correct
Correct answer: (D) 1, 2, 5 only
Explanation

Fog, soot and fly ash are the particulate air pollutants picked out here as matter suspended in air.

Statement 2, soot, is fine carbon particulate released by incomplete combustion.

Statement 5, fly ash, is fine mineral particulate lifted from the burning of coal.

Statement 1, fog, is a liquid aerosol of minute water droplets grouped with particulate matter.

Statement 3, smoke, and Statement 4, smog, are composite pollution forms and lie outside this three-item set.

Airborne particulates are graded by size, such as PM10 and the finer PM2.5.

Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.

Practise on Mcqkart →🎓 Book an expert →