Question

The process of neutralisation involves in the Taj's discolouration,what act as a base and what as an acid?

Answer 1

Answer:

acid rain and marble.

Explanation:

marble is a metamorphic rock which is composed of limesone(CaCO3)

while the acid rain contains acids like sulphuric acid, nitric acid and carbonic acid...these act as acids and bases which neutralises each other to form salt and water which causes dicolouration of taj.