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Class 10ScienceChemical Substances – Nature and BehaviourAcids, Bases, and SaltsMedium
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What chemical reason explains the effect of acid rain on marble?

Answer and explanation

Correct answer: Acids react with calcium carbonate

Marble is mainly calcium carbonate, CaCO₃. The governing reaction is acid–carbonate neutralisation: an acid reacts with carbonate to produce a salt, water, and carbon dioxide; for example, CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂. Repeated contact dissolves or erodes the marble surface. Hence option A is correct, while the other statements contradict its composition or the nature of acid rain.

Related tags

Acid RainMarbleCalcium CarbonateAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience
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10 more MCQs
  1. 1What type of substance turns blue litmus paper red?
  2. 2What type of substance turns red litmus paper blue?
  3. 3Which of the following substances acts as a natural indicator?
  4. 4What is the general nature of an aqueous soap solution?
  5. 5Which of the following substances turns red litmus paper blue?
  6. 6What is the nature of a solution whose pH is less than 7?
  7. 7At 25°C, a solution with a pH greater than 7 is of which nature?
  8. 8A student dips red litmus paper into a soap solution. What change will occur in the red litmus paper?
  9. 9Which gas is generally produced when dilute acids react with active metals?
  10. 10A student dips red litmus paper into a soap solution. What will be the colour of the litmus paper?
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