how the iron pillar at Delhi is not rusted yet
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0
Answer:
because it is well make
Explanation:
in ancient time there was a technology for it
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2
Answer:
The pillar was manufactured by the forge welding of pieces of wrought iron. In a report published in the journal Current Science, R. Balasubramaniam of the IIT Kanpur explains how the pillar's resistance to corrosion is due to a passive protective film at the iron-rust interface..........I hope it helps to
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