Question

Why does the Taj Mahal, a great Indian monument, turn yellow?

Answer 1

The Taj Mahal is turning yellow because of acid rain. When excesses of carbon dioxide, sulphur dioxide and nitrogen dioxide are released into the atmosphere, they react with the moisture present in the air forming carbonic acid, sulphuric acid and nitric acid, and fall on the Earth in the form of acid rain. Acid rains not only cause damage to the living but also to the buildings, particularly the ones made of marble, like the Taj Mahal.