Solved UPSC CDS/OTA Question
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Q · Basic Ecology and EnvironmentMedium · 45s
Which of the following pollutants causes ‘acid rain’?
TopicBasic Ecology and Environment
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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SO₂ and NOₓ react with water vapour to form acids, causing acid rain.
Final Answer: Option A — Sulphur dioxide and nitrogen oxides