INDIAN HISTORY

Detailed explanation-1: -d The ironpillar near Qutub Minar highlights ancient India’s achievements in metallurgy. The pillar is made of 98 per cent wrought iron and has stood 1 600 years without rusting or decomposing.

Detailed explanation-2: -The pillar has attracted the attention of archaeologists and materials scientists because of its high resistance to corrosion and has been called a “testimony to the high level of skill achieved by the ancient Indian iron smiths in the extraction and processing of iron".

Detailed explanation-3: -In Delhi, the Iron pillar of Qutub Minar does not rust as it is passively protected with 98% Wrought Iron. A high concentration of phosphorus (around 1%, which is higher than 0.05% in today’s iron) and the absence of sulfur or magnesium in the iron are responsible for the protection of iron from rusting.

Detailed explanation-4: -The Qutub Minar of Delhi has not rusted after such a long period. The iron pillar is majorly made of wrought iron and the high presence of phosphorus and absence of sulfur, and magnesium in the iron are the main reasons for its longevity. More items