Question

The pollutants which are already present in nature, but are also released in substantial amounts by man are known as

• A. Qualitative pollutants
• B. primary pollutants
• C. Degradable pollutants
• D. quantitative pollutants

Answer 1

The correct option is D quantitative pollutants

Quantitative pollutants are those substances which are naturally present in the environment, but are termed as pollutants when their concentration (quantity) increases in the environment due to anthropogenic activities. For example, CO₂ is present in the environment in quantities greater than normal, due to automobiles and industries. It is thus, classified as a quantitative pollutant.