The effect of acid rain on marble is due to which reaction?
Answer and explanation
Correct answer: Acid reacts with calcium carbonate
Marble is mainly calcium carbonate, CaCO₃. The governing concept is the reaction of an acid with a carbonate: acid + carbonate produces a salt, water, and carbon dioxide. Acid rain contains acids that slowly attack the carbonate surface, causing effervescence or dissolution and erosion of monuments. Therefore option A is correct; the other choices do not describe the relevant reaction or even a valid chemical process.
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What is the correct answer to this question?
Acid reacts with calcium carbonate
Why is this the correct answer?
Marble is mainly calcium carbonate, CaCO₃. The governing concept is the reaction of an acid with a carbonate: acid + carbonate produces a salt, water, and carbon dioxide. Acid rain contains acids that slowly attack the carbonate surface, causing effervescence or dissolution and erosion of monuments. Therefore option A is correct; the other choices do not describe the relevant reaction or even a valid chemical process.
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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