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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
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Consider the following statements:1. Coal ash contains arsenic, lead a...
Coal ash contains contaminants like mercury, cadmium and arsenic. Without proper management, these contaminants can pollute waterways, ground water, drinking water, and the air.
The burning of coal releases many pollutants - oxides of nitrogen (NOx) and sulfur (SOx) -and particulate matter. They also emit greenhouse gases, such as carbon dioxide (CO2) and methane (CH4), which are known to contribute to global warming and climate change.
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 than imported coal due to drift theory of formation of coal deposits in India.
Therefore, all statements are correct.
Therefore, the correct answer is (d).
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Most Upvoted Answer
Consider the following statements:1. Coal ash contains arsenic, lead a...
Coal Ash and its Content

• Coal ash is the residue left after coal is burned in a power plant.
• It contains several harmful elements such as arsenic, lead, mercury, and others.
• The coal ash is stored in ash ponds or landfills, which can lead to groundwater contamination.

Sulphur dioxide and oxides of nitrogen emissions

• Coal-fired power plants release harmful gases such as sulphur dioxide and oxides of nitrogen into the environment.
• These gases can cause respiratory problems and contribute to the formation of acid rain.
• The use of coal in power plants is a major contributor to air pollution.

High ash content in Indian coal

• Indian coal has a high ash content compared to other countries.
• This means that more coal is required to produce the same amount of energy, leading to higher emissions and greater environmental impact.
• The high ash content also makes it difficult to use Indian coal in high-efficiency power plants.

Conclusion

All three statements are correct, and they highlight the negative impact of coal-based power generation on the environment. The use of coal in power plants contributes to air pollution, groundwater contamination, and other environmental problems. Governments and energy companies need to focus on developing cleaner and more sustainable energy sources to reduce the impact of power generation on the environment.
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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 onlyb)2 and 3 onlyc)3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?
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