alleryMatch air pollutant: 1. CO: p. Toxic gas 2. SO2: q. Acid gas 3. O3: r. Smog gas
A1-p, 2-q, 3-r
B1-p, 2-r, 3-q
C1-q, 2-p, 3-r
D1-r, 2-p, 3-q
Answer & Solution
Correct answer: A. 1-p, 2-q, 3-r
CO is a toxic gas, SO2 is an acidic gas forming acid rain, and O3 is a key component of photochemical smog.
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