Consider the following pollutants:

  1. Carbon monoxide
  2. Sulphur dioxide
  3. Methane

Which of the above is/are primary pollutant(s)?

Answer: [D] 1, 2 & 3

Primary pollutants are chemicals released directly into the air in a harmful form. Examples of Primary Pollutants are: Car exhaust, smokestacks (CO, SO2, NO), Particulate material (soot, ash), Toxic metals (lead, mercury) & Volatile organic compounds (VOCs) (methane, propane, CFCs, etc.)

This question is a part of GKToday's Integrated IAS General Studies Module