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UPSC 2010: Consider the following: 1. Oxides of Hydrogen 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above causes/cause acid rain?
(a)1 and 2 only
(b)3 only
(c)2 and 3 only
(d)1, 2 and 3
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Not attemptedCorrect Answer: (c) 2 and 3 only
Acid rain forms when emissions of sulfur dioxide (SO₂) and nitrogen oxides (NOₓ) react with atmospheric moisture to produce sulfuric and nitric acids; oxides of hydrogen (water) do not contribute. Therefore only oxides of nitrogen and sulfur (2 and 3) are responsible. ([britannica.com](https://www.britannica.com/science/What-Causes-Acid-Rain?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2010 Environment & Ecology question?▼
The correct answer is option (c): 2 and 3 only. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Pollution & Waste Management question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2010, GS Paper 1, as Question 38. It falls under Environment & Ecology > Pollution & Waste Management.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Pollution & Waste Management?▼
UPSC has asked 38 questions from Pollution & Waste Management (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.