Home / Medieval History Batch / HIS_MED_2010_73 Tughluq Fiscal Policy UPSC Archival Analysis Exam Year 2010 Evidence Source UPSC Level ID: HIS_MED_2010_73 Ref: Standard Educational Reference Who was the first Sultan of Delhi to have levied 'Haqq-i-Sharb' or irrigation tax? A. Alauddin KhaljiB. Ghiyasuddin TughluqC. Muhammad-Bin-TughluqD. Firuz Tughluq