Which of the following gases is the most dangerous pollutant?
-
A.
Hydrogen sulphide -
B.
Carbon (lV) oxide -
C.
Sulphur (lV) oxide -
D.
Carbon (ll) oxide
Correct Answer: Option D
Explanation
Carbon monoxide is a colourless, odourless and tasteless gas that is produced by the incomplete combustion of fossil fuel. It is the most dangerous of all the pollutant gases and can cause death in very high concentrations.