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Acid rain affects marble mainly because of which substance in marble?

Answer and explanation

Correct answer: Calcium carbonate

Marble consists mainly of calcium carbonate, CaCO3. Acid rain contains acids such as sulfuric acid and nitric acid, which react with carbonate minerals. The reaction consumes calcium carbonate and produces soluble salts, water, and carbon dioxide; repeated reaction gradually erodes the polished surface. Thus option A is correct. Sodium chloride and copper sulphate are salts, while sodium hydroxide is a base and is not the principal constituent responsible for marble damage.

Related tags

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

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