Primary and Secondary Pollutants?

Question

Which ones are primary pollutants and which ones are secondary....

Sulphur dioxide
Nitrogen Monoxide
Nitrogen Dioxide
Carbon monoxide
Carbon Dioxide
carbon (soot)

Answer 1

The term 'pollutant' is relative and judgemental .. however in this context I will assume it means 'Human Biosphere' and 'generally accepted' ..

In which case, 'primary' means 'as generated' and secondary' means 'breaks down into' or 'is release as a consequence of' ..

I leave you to make the distinction