0 votes 0 votes Which one of the following options contains ONLY primary air pollutants? Hydrocarbons and nitrogen oxides Hydrocarbons and ozone Ozone and peroxyacetyl nitrate Nitrogen oxides and peroxyacetyl nitrate Air Pollution gate2019-ce-2 air-pollution environmental-engineering types-of-pollutants + – Arjun asked Feb 12, 2019 • recategorized Nov 18, 2020 by soujanyareddy13 Arjun 13.0k points answer See all 0 reply