SSC JE Civil Engineering 25-Sep-2019 Shift 1 Solved Paper

Secondary pollutants include sulfuric acid $\left({\mathit{H}}_2\mathit{S}{\mathit{O}}_4\right)$ which can cause respiratory problems such as air pollution. Nitrogen dioxide ($\mathit{N}{\mathit{O}}_2$ ) which gives is air a brownish coloration. Ozone (${\mathit{O}}_3$ )
which is a colorless gas, has a sweet smell, is an oxidizing agent, and causes irritation to the eyes.