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

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

Which among the following rulers of the Slave Dynasty was not himself a slave?

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?