During the Sultanate period, which Sultan started the measurement of agricultural land system called 'Masahat'?

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

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

Which period is called the era of “the rule of the Forty” in the history of Delhi Sultanate age?

Which Sultan demanded half the crops on land after measurement as revenue?

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