A) Sulphur oxides and nitrogen oxides
B) Silicon oxides and nitrogen oxides
C) Sulphur oxides and chlorine gas
D) Silicon oxides and chlorine gas
Correct Answer: A
Solution :
Smoke from industries has large quantities of nitrogen oxides and sulphur oxides. These oxides combine with water vapour present in atmosphere to form acid droplets that remain suspended in the atmosphere. When it rains, these droplets mix with rain water and cause acid rains. The correct answer is A.
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