engineering recuitment TNPSC AE Civil 2024 Test series Environmental Engineering Air and Noise Pollution
Consider the following air pollutants:
1. NOX (oxides of nitrogen)
2. PAN (Peroxyacytyl nitrate)
3. CO2 (Carbon dioxide)
4. CO (Carbon monoxide)
Which of the given air pollutants is/are present in an automobile exhaust gas?
1
1, 3 and 4
2
1 and 2
3
1 only
4
2 and 3