Q. 64.3( 6 Votes )
Iron pillar near the Qutub Minar in Delhi is famous for the following facts. Which of these facts is responsible for its long stability?
A. It is more than 7 metres high.
B. It weighs about 6000 kg.
C. It was built more than 1600 years ago.
D. It has not rusted after such a long period.
Mixing other metals in iron resulting in its composition make it resistant of rusting. Therefore, Iron pillars of Qutub Minar has not rusted from such a long period.
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