Which of the following reactions is taki...

Which of the following reactions is taking place resulting in discolouration of marble of the buildings like Taj Mahal?

A

`CaCO_(3)+H_(2)SO_(4)rarr CaSO_(4)+H_(2)O+CO_(2)`

B

`CaCO_(3)+2HClrarr CaCl_(2)+H_(2)O+CO_(2)`

C

`CaCO_(3)+H_(2)OrarrCa(OH)_(2)+CO_(2)`

D

`CaCO_(3)rarrCAO+CO_(2)`

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The correct Answer is:

A

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