What is a powerful eye irritant present in smog?
The correct answer is Peroxyacetyl nitrate. Smog means a mixture of smoke and fog. It is air pollution that reduces visibility. It is generally present in the atmosphere of industrial areas. Smog is of the following types: coal combustion emission, industrial emission, vehicular emission, forest and agricultural fires, and photochemical reactions of the smog. The primary component of smog is pollen and dust; the secondary components are sulfur oxides, nitrogen oxides, and ammonia gas. Peroxyacetyl nitrate causes irritation in the eyes and is thermally unstable and releases nitrogen dioxide as one of its products.