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Why can acid rain damage marble?

Answer and explanation

Correct answer: Marble contains calcium carbonate

The governing concept is the reaction between acids and carbonates. Marble is mainly calcium carbonate, CaCO3. Acids in rain react with this carbonate, producing salts, water, and carbon dioxide; the surface can gradually dissolve, lose polish, and become damaged. Therefore option A gives the relevant reason. Marble is not pure sodium or sugar, and acid rain is acidic rather than basic, so B, C, and D are incorrect.

Related tags

Acid RainMarbleCalcium CarbonateAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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