Question

why is iron piller not rusting

Answer 1

heya
iron pillar near qutub minar has not rusted even after so long bcoz when it was made, certain components were added to iron which made it rust proof

Answer 2

Answer:

Iron pillar of Qutub Minar is not rusted because it was made by 98% wrought iron. ... A thin layer of a˜misawitea (formed catalytically by the presence of phosphorous in the iron), a compound of iron, oxygen and hydrogen, has also protected the pillar.

Explanation:

Hope it helps you.