Q. Who was Sultan of Delhi Sultanate when Timur invaded India in 1398? Answer:
Mahmud Shah Tughluq
Notes: Mahmud Shah Tughlaq was the last sultan of the Tughlaq dynasty to rule the Islamic Delhi Sultanate. During his reign in 1398, Amir Timur the Chagtai ruler invaded India. He carried away with him a large booty from Delhi and the surrounding area. Soon after the invasion, the Tughlaq dynasty came to an end.