Discolouration of 'Taj mahal' marbles is due to

Dissloution of $C a C O_{3}$ by sulphuric acid

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The presence of chloroflurocarbons in atmosphere

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Solution

The correct option is A
Dissloution of $C a C O_{3}$ by sulphuric acid

Taj mahal which is formed of $C a C O_{3}$ reacts with the acids, in acidic rain and undergoes decomposition

$C a C O_{3} + H_{2} S O_{4} \to C a S O_{4} + H_{2} O + C O_{2}$

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Discolouration of 'Taj mahal' marbles is due to

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