How does acid rain damage the surface of marble?
Answer and explanation
Correct answer: Acids react with calcium carbonate
The governing concept is the reaction of acids with carbonates. Marble consists mainly of calcium carbonate, CaCO₃. Acids in acid rain react with this carbonate, producing a salt, water, and carbon dioxide; in general, acid + carbonate → salt + H₂O + CO₂. Repeated reaction removes or roughens the surface and causes deterioration. Therefore option A is correct; marble is not sugar and acid rain is not basic.
Frequently asked questions
What is the correct answer to this question?
Acids react with calcium carbonate
Why is this the correct answer?
The governing concept is the reaction of acids with carbonates. Marble consists mainly of calcium carbonate, CaCO₃. Acids in acid rain react with this carbonate, producing a salt, water, and carbon dioxide; in general, acid + carbonate → salt + H₂O + CO₂. Repeated reaction removes or roughens the surface and causes deterioration. Therefore option A is correct; marble is not sugar and acid rain is not basic.
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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