A) \[S{{O}_{2}}\]and \[N{{O}_{2}}\]
B) \[S{{O}_{3}}\]and \[CO\]
C) \[C{{O}_{2}}\]and \[CO\]
D) \[{{O}_{3}}\] and dust
Correct Answer: A
Solution :
Acid rain is caused by increase in the atmospheric concentration of \[S{{O}_{2}}\] and\[N{{O}_{2}}\]. These mix with water vapour to form sulphuric acid (\[({{H}_{2}}S{{O}_{4}})\] and nitric acid \[(HN{{O}_{3}})\] respectively which falls on earth in the form of acid rain.
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