(a) Name two acids that are usually present in rain water.
(b) How these acids affect our hearitage monuments such as Taj Mahal ?

Explanation

(a) Sulphuric acid `(H_(2)SO_(4))` and Nitric acid `(HNO_(3))`.
(b) The acids present in acid present in acid react with marble of heritage monuments (e.g., Taj Mahal at Agra) and corrode it. Chemical reactions involved are :
`{:(CaCO_(3) , + , H_(2)SO_(4) , to , CaSO_(4),+ ,CO_(2), + ,H_(2)O), ("Calcium carbonate" ,, "Sulphuric acid" ,, "Calcium " ,, "Carbon" ,, "Water"), ("(Marble)",,,,"sulphate",, "dioxide",,), (CaCO_(3) , + , HNO_(3), to , Ca(NO_(3))_(2) , + , CO_(2) , + , H_(2)O), ("(Marble)" ,, "Nitric acid" ,, "Calcium nitrate" ,, "Carbon dioxide" ,, "Water"):}`