Answers

2015-10-21T13:47:49+05:30
Marble cancer refers to the corrossion of ny building or structure made of marble or limestone. these is caused heavily due to acid rain.it contains..both sulphuric acid and nitric acid which dissolve marble to form salts. acid rain corrodes the marble of the monument.for example..the taj mahal is slowly turning yellowish due to the same
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