Question : The gas causing acid rain in an industrial area is
Option 1: carbon dioxide
Option 2: carbon monoxide
Option 3: sulphur dioxide
Option 4: methane
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Correct Answer: sulphur dioxide
Solution : The correct option is sulphur dioxide .
Sulphur dioxide (SO 2 ) is the primary gas responsible for acid rain in industrial regions. Sulphur dioxide is released into the atmosphere through industrial activities, particularly the combustion of fossil fuels such as coal and oil. Sulphuric acid (H 2 SO 4 ) is formed when sulphur dioxide combines with atmospheric moisture, and it can subsequently fall to the Earth's surface as acid rain.
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