Which of the following reactions is taking place resultingin discolour – InterviewSolution

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1.	Which of the following reactions is taking place resultingin discolouration of marble of the buildings like Taj Mahal?
Answer» `CaCO_(3)+H_(2)SO_(4)RARR CaSO_(4)+H_(2)O+CO_(2)` `CaCO_(3)+2HClrarr CaCl_(2)+H_(2)O+CO_(2)` `CaCO_(3)+H_(2)OrarrCa(OH)_(2)+CO_(2)` `CaCO_(3)rarrCAO+CO_(2)` Answer :A

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