2017 · Q120
Which one of the following is not included in the National Air Quality Index ?
General KnowledgeCurrent Affairs
- ASulphur
- BNitrogen dioxide
- CLead
- DMethane
Explanation
India's National Air Quality Index covers eight pollutants: PM10, PM2.5, nitrogen dioxide (NO₂), sulphur dioxide (SO₂), carbon monoxide (CO), ozone (O₃), ammonia (NH₃) and lead (Pb). Sulphur (as SO₂), nitrogen dioxide and lead are therefore all included. Methane is not one of the eight pollutants tracked by the index. The odd one out is methane.