The primary air pollutant responsible for acid rains is:

carbon dioxide

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sulphur dioxide

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carbon monoxide

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ozone

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Solution

The correct option is B sulphur dioxide
$S O_{2}$ is responsible for acid rain. It reacts with water, oxygen and other chemicals in the atmosphere to form more acidic thereby producing acid rain.
In atmosphere,
$2 S O_{2} + O_{2} ⟶ 2 S O_{3}$
then, $S O_{3} + H_{2} O ⟶ H_{2} S O_{4}$ .

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