Why does acid rain slowly damage marble monuments?
Answer and explanation
Correct answer: Acid reacts with calcium carbonate
Marble is largely calcium carbonate, a carbonate compound that reacts with acidic substances. Pollutants such as sulphur dioxide and nitrogen oxides can form acids in rainwater. Repeated contact converts some calcium carbonate into soluble salts, water, and carbon dioxide, gradually eroding the surface and its carvings. Hence option A is correct; sunlight alone does not explain this characteristic chemical damage.
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What is the correct answer to this question?
Acid reacts with calcium carbonate
Why is this the correct answer?
Marble is largely calcium carbonate, a carbonate compound that reacts with acidic substances. Pollutants such as sulphur dioxide and nitrogen oxides can form acids in rainwater. Repeated contact converts some calcium carbonate into soluble salts, water, and carbon dioxide, gradually eroding the surface and its carvings. Hence option A is correct; sunlight alone does not explain this characteristic chemical damage.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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