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प्रश्न
The 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.
उत्तर
It has not rusted after such a long period.
Explanation:
The 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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