JAMB - Chemistry (2005 - No. 23)
The gas that is the most dangerous pollutant to human is
sulphur (IV) oxide
carbon (IV) oxide
nitrogen (II) oxide
hydrogen sulphide
توضیح
While both SO\(_2\) and H\(_2\)S are dangerous pollutants, H\(_2\)S (hydrogen sulphide) is generally considered more dangerous to humans, especially at high concentrations, due to its rapid and potentially lethal effects on the respiratory system and central nervous system.