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UPSC 2020: Consider the following statements: 1. Coal ash contains arsenic, lead and mercury. 2. Coal-fired power plants release sulphur dioxide and oxides of nitrogen into the environment. 3. High ash content is observed in Indian coal. Which of the statements given above is/are correct?
(a)1 only
(b)2 and 3 only
(c)3 only
(d)1, 2 and 3
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Not attemptedCorrect Answer: (d) 1, 2 and 3
Coal ash (CCR) is known to contain toxic trace metals such as arsenic, lead and mercury; coal-fired plants routinely emit sulphur dioxide and nitrogen oxides during combustion; and Indian coal, formed by drift deposits, typically has high ash content (≈25–45 %). Therefore all three statements are true. ([vajiramandravi.com](https://vajiramandravi.com/upsc-exam/consider-the-following-statements-76/?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2020 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 2020, GS Paper 1, as Question 79. 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.