Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The pollution due to oxides of sulphur gets enhanced due to the presence of:
Text Solution
Verified by ExpertsThe correct answer is:
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Uncatalysed oxidation of sulphur dioxide is slow.
However, the presence of particulate matter in polluted air catalyzes the oxidation of SO 2 to SO 3 .
SO 2 (g) + O 2 (g) 
2SO 3 (g)
This reaction can also be promoted by O 3 and H 2 O 2 , as,
SO 2 (g)+O 3 (g) 
SO 3 (g) + O 2 (g)
SO 2 (g) + H 2 O 2 (l) 
H 2 SO 4 (aq)
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