U.P.P.C.S. (Pre) 2002

Ancient Metallurgy and Science

Authentic Past Paper Standard Evaluation

The iron column, located in the courtyard of Delhi's Quwwat-ul-Islam Mosque is retention of-

Solution & Analysis

Answer: B

Concept Ancient metallurgy in India reached a zenith during the Gupta period, evidenced by massive iron structures that remain rust-free even after 1600 years.

Explanation The Iron Pillar in the Mehrauli complex (Quwwat-ul-Islam courtyard) bears a Sanskrit inscription mentioning King Chandra, universally identified by historians as the Gupta emperor Chandragupta II.

Logical Breakup
Logic 1: The inscription states it was originally erected on the 'Vishnupada' hill (likely Udayagiri) as a standard for Lord Vishnu.
Logic 2: It was later moved to Delhi by Anangpal Tomar in the 11th century CE.
Logic 3: Its rust-resistant property is due to a specific composition of high phosphorus and low sulfur in the iron.

Active Recall

Question

Why is the Mehrauli iron pillar rust-resistant?

Answer

It is rust-resistant due to a unique protective layer formed by its high phosphorus content and specific forging techniques.

Core Insight

The Mehrauli pillar is as much a testament to Gupta scientific achievement as it is to the military glory of Chandragupta II.