Q. Under the Delhi Sultanate, on which tomb were the trials of double dome held?
Answer: Sikandar Lodi Tomb
Notes: The trials of the Double Dome architecture began in the year 1501 with the Tomb of Taj Khan and in the year 1518 with Tomb of Sikandar Lodi. The trials of the double dome took place in Delhi.  

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📌 Question Number: 38 in 14. Delhi Sultanate: Architecture, Arts and Culture in the above course in App.