History • Ancient IndiaEasy
The famous iron pillar at Mehrauli in Delhi, which bears an inscription of a king named 'Chandra', is predominantly celebrated for:
A. Its massive height exceeding 30 meters
B. Its exceptional resistance to corrosion over fifteen centuries✓ Correct Answer
C. Its gold-plated inscriptions detailing Gupta conquests
D. Its construction using hollow cast-iron blocks
💡 Solution & Explanation
The Mehrauli iron pillar resists rust due to a high phosphorus and low sulfur content combined with a protective passive film formed by slag particles. Alternative claims about massive heights or gold plating misrepresent archaeological facts.
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