Which of the following statements is / are correct ? 1. Acid rain reacts with buildings made from limestone 2. Burning of sulphur containing coal can contribute to acid rain 3. Eutrophication is an effective measure to control pollution Select the correct answer using the code given below:

Statement 1 is correct as acid rain reacts with building materials like limestone and marble, causing surface erosion, mechanical weakening, and pitting [3]. This occurs when sulfuric and nitric acids in the rain react with the calcite in these stones [2]. Statement 2 is correct because the combustion of sulfur-containing coal in power plants is a major source of sulfur dioxide (SO2) [4]. This SO2 reacts with atmospheric moisture and oxygen to form sulfuric acid, a primary component of acid rain [4]. Statement 3 is incorrect because eutrophication is a form of nutrient pollution, not a control measure [1]. It involves the excessive enrichment of water bodies with nutrients like nitrogen and phosphorus, leading to harmful algal blooms and ecosystem disruption. Therefore, only statements 1 and 2 are correct.

Sources

1. [1] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 5: Environmental Pollution > f) Acid rain damage on Materials > p. 105
2. [3] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 5: Environmental Pollution > 5.15.4. Chemistry of Acid Rain > p. 103
3. [2] https://unesdoc.unesco.org/ark:/48223/pf0000219946
4. [4] https://archive.legmt.gov/content/Publications/Environmental/1983annualreport.pdf