What is meant by an marble cancer? What are the causes?
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marble cancer refers to the corrosion of building and statues made up of marbles by action of sulfuric acid and nitric acid. The SO 2 and NO xpresent in pollution get deposited on these buildings. These oxides absorb moisture from the air and get converted into respective acids and cause corrosion.
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Statues and structures made up of marble and limestone are slowly corroded as the rain water containing the acids (acid rain) fall on them. both sulphuric acid and nitric acid dissolve marble to form salts. acid rain corrodes the marble of the monument. this phenomenon is also known as marble cancer
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