Q. Mongol invasions were repulsed by whom in the reign of Allauddin Khilji?
Answer: Zafar Khan
Notes: Mongol invasions were repulsed by Zafar Khan who was military general in the reign of Allauddin Khilji. In 1298, as per order of Sultan Allauddin Khilji , about 30,0000 New Muslims were slaughtered in a day, as he suspected them of being involved in a conspiracy against him and of being a threat to his power. (Mongolians who settled near Delhi and accepted Islam were called "New Muslims").