Q. Which Khilji ruler killed his father- in-law to ascend the throne of Delhi?
Answer: Alauddin Khilji
Notes: Jalal-ud-din Khalji, the first Khalji ruler of the Delhi Sultanate, was assassinated by his nephew and son-in-law Ala-ud-din Khilji on 20 July 1296 near Kara. Ala-ud-din used wealth from the Devagiri campaign to gain support, marking the start of his reign known for military expansions and economic reforms, including market control and price regulations.

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