Civil Services UPPSC RO ARO 2024-25 Mock Tests Series General Knowledge Ecology and Environment Environmental pollution
With reference to Nitrogen oxides, consider the following statements:
1. It is a product of oil refineries.
2. They are used to create chemical fertilizers.
3. It is one of the eight pollutants measured in computing the National Air Quality Index.
Which of the statements given above are correct?
1
1 and 2 only
2
2 only
3
2 and 3 only
4
1, 2 and 3