Which among the following Sultans of Delhi established the department 'Diwan-i-Kohi' for agricultural development?

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

Who among the following established Delhi as the capital of Sultanate?

The Sultan of Delhi who was very concerned about charity and alms and established a department called ‘Diwan-i-Khairat’ for it, was:

Who created the department of Diwan-i-Arz in Delhi Sultanate?

Which one of the following Sultans is known for having abolished the tax on grains?