Hi Kshitij,

IIIT selects a candidate on the basis of the score obtained in Joint Entrance Examination(Main) and the academic records in 10+2 or equivalent examination. For IIITD you have to obtain aggregate of atleast 80% in PCM whereas IIITH takes 75% aggregate weightage as their minimum qualification criteria.

There is no seperate test as such you need to give Joint Entrance Examination to get an admission in any of the IIITs.

All the best!

Hope this will be helpful!