Teaching KVS PRT (Latest Pattern) Mock Test Environmental Studies Environment 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
CO
2
CO2
3
SO2
4
NO2
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