Discussion
\(\text{SO}_{2}\) and \(\text{NO}_{2}\) produce pollution by increasing
Answer: B
\(\text{SO}_{2}\) and \(\text{NO}_{2}\) cause pollution by increasing acidity.
Both gases are oxides of non-metals. In the atmosphere they react with water and oxygen to form sulphuric acid and nitric acid, which come down as acid rain, lowering the pH of rain, soil, lakes and rivers.
They do not make the environment alkaline, and 'neutrality' or buffer action would counter pollution rather than cause it. Acid rain damages forests, aquatic life and buildings such as marble monuments.
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