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.
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What is the correct answer to this question?
Calcium carbonate
Why is this the correct answer?
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.
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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