Civil Services TNPSC Group 1 (New Syllabus) Mock Test 2025 General Knowledge Ecology and Environment Environmental pollution
Consider the following statements about an air-pollutant-
1. It is produced by the incomplete combustion of fuels like petrol, natural gas, coal or wood.
2. It is colourless and odourless gas.
Which of the following gases is being talked about?
1
SO2
2
NO2
3
CO
4
CO2