Consider the following pollutants:
- Carbon monoxide
- Sulphur dioxide
Which of the above is/are primary pollutant(s)?
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