Which of the following are wrong statements ?

1.	Which of the following are wrong statements ?
Answer» NO is more harmful than `NO_(2)` `SO_(2)` is more harmful than `SO_(3)` ACID rain contains MAINLY `HNO_(3)` Acid rain contains mainly `H_(2)SO_(4)` and lesser concentrations of `HNO_(3)` and HCl. Answer :A::B::C

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