A) chlorine
B) hydrogen
C) sulphur dioxide
D) oxygen
Correct Answer: C
Solution :
The major source of \[S{{O}_{2}}\] emission are burning of fossil fuel in thermal power plant, smelting industries and other processes as manufacture of sulphuric acid and fertilizers. \[S{{O}_{2}}\] is involved in the erosion of building materials as limestone marble, the state used in roofing, mortar and deterioration of states. \[S{{O}_{2}}\] is also component of acid rain. Chlorine destroys ozone molecules. Oxygen and hydrogen are the main components of air and are not pollutant.
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