Objective Type Questions \( \mathrm{P} \) W) Which of the following...
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Objective Type Questions
\( \mathrm{P} \)
W)
Which of the following is the correct match?
(1) Classical smog \( -\mathrm{NO}_{2} \)
(2) Photochemical smog \( -\mathrm{SO}_{2} \)
(3) Greenhouse gas \( -\mathrm{CH}_{4} \)
(4) Both (1) \& (3)
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