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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.

Related tags

Acid RainMarbleCorrosionAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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