Question

what types of tax called "kharaj" was imposed during the reign Aladdin Khilji​

Answer 1

He imposed a 50% kharaj tax on the agricultural produce in a substantial part of northern India: this was the maximum amount allowed by the Hanafi school of Islam, which was dominant in Delhi at that time.  

Burial: Madrasa and tomb of Alauddin Khalji

Died: 4 January 1316 (aged 48–49); Delhi, India

House: Khalji dynasty