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प्रश्न
Iron pillar near the Qutub Minar in Delhi is famous for the following facts. Which of these facts is responsible for its long stability?
विकल्प
It is more than 7 metres high.
It weighs about 6000 kg.
It was built more than 1600 years ago.
It has not rusted after such a long period.
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उत्तर
It has not rusted after such a long period.
Explanation:
Iron pillar near Qutub Minar in Delhi is famous for its stability because it has not rusted over a long period.
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