A) photochemical smog
B) dry acid deposition
C) industrial smog
D) wet acid deposition
Correct Answer: B
Solution :
Depending on climatic conditions, tiny particles of these substances may be airborne for a while and then fall to earth as dry acid deposition. Most sulphur and nitrogen dioxides dissolve in atmospheric water to form weak solutions of
and 
Winds can distribute them. over great distances before they fall to earth in rain and snow, this is called wet acid deposition.
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