Question

Which among the following is not the major air pollutant produced by human activities?

• A. Particulate matters
• B. Persistent free radicals
• C. Sulfur Oxides
• D. All the above

Answer 1

The correct option is D All the above

All of them are the major air pollutants produced by human activities.

1. Particulate matter is the sum of all solid and liquid particles suspended in air many of which are hazardous. This complex mixture includes both organic and inorganic particles, such as dust, pollen, soot, smoke, and liquid droplets.
   
2. Persistent free radicals are connected to airborne fine particles and could cause cardiopulmonary disease.
3. Sulphur dioxide is a gas produced from burning coal, mainly in thermal power plants. Some industrial processes, such as the production of paper and smelting of metals, produce Sulphur dioxide. It is a major contributor to smog and acid rain. Sulfur dioxide can lead to lung diseases.