Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) General Knowledge Ecology and Environment Environmental pollution
Consider the following statements regarding pollutants in the atmosphere:
1. Secondary pollutants are formed when primary pollutants react in the atmosphere.
2. Dichlorodiphenyltrichloroethane is a bio-degradable insecticide used in agriculture.
3. Ozone, nitric acid, peroxy acyl nitrates (PANs) are the main oxidants causing Photochemical smog.
Which of the statements given above is/are correct?
1
1 and 3 only
2
2 only
3
2 and 3 only
4
1, 2 and 3