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?

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CollectorBabu · Accepted Answer

Correct Answer: 1, 2 and 3. ● Coal ash, a catchall term for several kinds of waste left over at power plants that burn coal, typically contains a number of substances harmful to human health—arsenic, chromium, lead, and mercury among them. Hence Statement 1 is correct. ● Pollution from coal-fired power plants comes from the emission of gases such as carbon dioxide, nitrogen oxides, and sulfur dioxide into the air, as well a significant volume of wastewater which may contain lead, mercury, cadmium and chromium, as well as arsenic, selenium and nitrogen compounds. Hence Statement 2 is correct. ● Coal India Limited announced that ash content of coal produced in the country is generally 25 to 45 % whereas average ash content of imported coal varies from 10 to 20 %. Indian Coal has comparatively higher ash content th solar water pumps, consider an imported coal due to drift theory of formation of coal deposits in India. Hence Statement 3 is correct.

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?

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