The effect of acid rain on marble buildings is more evident because marble contains which substance?
Answer and explanation
Correct answer: Calcium carbonate
Marble consists mainly of calcium carbonate, CaCO₃. Acids present in acid rain react with this carbonate, producing a salt, water, and carbon dioxide; for example, an acid reacting with CaCO₃ gradually dissolves or roughens the surface. Sodium chloride and ammonium chloride do not represent the main reactive component of marble, while sodium hydroxide is a base and is not the substance responsible for marble’s vulnerability. Therefore A is correct.
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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. Acids present in acid rain react with this carbonate, producing a salt, water, and carbon dioxide; for example, an acid reacting with CaCO₃ gradually dissolves or roughens the surface. Sodium chloride and ammonium chloride do not represent the main reactive component of marble, while sodium hydroxide is a base and is not the substance responsible for marble’s vulnerability. Therefore A is correct.
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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