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UPSC 2011: Consider the following: 1. Carbon dioxide 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above is/are the emission/emissions from coal combustion at thermal power plants?
(a)1 only
(b)2 and 3 only
(c)1 and 3 only
(d)1, 2 and 3
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Not attemptedCorrect Answer: (d) 1, 2 and 3
Combustion of coal contains carbon, nitrogen and sulphur compounds; burning it releases carbon dioxide (CO₂), nitrogen oxides (NOₓ) and sulphur oxides (SOₓ). All three gases are routinely reported in power-plant emission inventories, so statements 1, 2 and 3 are all correct → option (d). ([epa.gov](https://www.epa.gov/newsreleases/epa-releases-2023-power-plant-emissions-data?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2011 Environment & Ecology question?▼
The correct answer is option (d): 1, 2 and 3. 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 2011, GS Paper 1, as Question 2. 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.