Multiple choice

Main air pollutant is

  1. CO

  2. CO2

  3. S

  4. N2

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon monoxide (CO) is the main pollutant of atmosphere. The maximum emission of CO occurs due to burning of petrol. In human beings the CO causes headache and difficulty in breathing. The haemoglobin has greater affinity for CO than oxygen.