Ain-ul-Mulk Multani did not serve under which of the following rulers?

Which one of the following is NOT correctly matched (Ruler - State)

Who among the following Sultanate rulers was of Afghan origin?

Which of the following Sultans founded a town where now stands Agra?

Which of the following Sultan had most numbers of slaves in his court?

Which one of the following is the correct chronological order of the Afghan rulers to the throne of Delhi?