The Delhi Sultan who transferred the capital from Delhi to Daulatabad (Devagiri) was

Muhammad-Bin-Tughluq had transferred his capital from Delhi to –

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

Who was the first Sultan of Delhi who introduced regular coins and declared Delhi the capital of his empire?

The Delhi Sultan who wrote his memoirs, was :

Which Sultan of Delhi was the first to charge ‘Ghari’ or House-tax?