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Which of the following oxides of nitrogen is a major contributor to photochemical smog?
Nitrogen monoxide
Nitrogen dioxide
Nitrous oxide
Nitrogen trioxide
Answers (1)
Correct Option B
The correct answer is (B) Nitrogen dioxide. Nitrogen dioxide is a major contributor to photochemical smog, which is a type of air pollution that is formed by the reaction of nitrogen oxides and volatile organic compounds in the presence of sunlight. Nitrogen monoxide is also a contributor to photochemical smog, but to a lesser extent. Nitrous oxide and nitrogen trioxide are not significant contributors to photochemical smog. Hence option B is the correct answer.
Option (A) is incorrect because nitrogen monoxide is also a contributor to photochemical smog, but to a lesser extent. Hence option A is incorrect.
Option (C) is incorrect because nitrous oxide and nitrogen trioxide are not significant contributors to photochemical smog. . Hence option C is incorrect.
Option (D) is incorrect because nitrous oxide and nitrogen trioxide are not significant contributors to photochemical smog. Hence option D is incorrect.
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