Which of the following gives an account of Balban's period?

Which one of the following statements is not true about Balban?

The department of 'Diwan-i-Amir-Kohi' dealt with which of the following during Sultanate period?

Coins- Tanka, Shashgani and Jital of Sultanate period was made of which of the following metals-

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

Which of the following places was diamond mining carried out during the Delhi Sultanate period?