'Stone Cancer' occurs due to

Q. 'Stone Cancer' occurs due to

1. Acid rain
2. Global warming
3. Radioactivity
4. Bacteria action

Answer: Acid Rain

Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH). It can have harmful effects on plants, aquatic animals and infrastructure. Acid rain is caused by emissions of sulphur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.

Stone cancer is caused by the acid rain and it is actually the state when the buildings especially those made up of marble get eroded and fainted as an adverse consequence of acid rain that falls on them. It can simply be understood by the sentence that ‘ stone monuments like Taj Mahal are being eroded due to stone cancer by acid rain.