Hello Sai,

DTU B.Tech 2015 Seat Allotment will be based on JEE Main 2015 All India Rank, candidates’ choices that they have filled and the vacancies.Candidates shall check the allotted branch by logging in tentatively in the month of July, 2015. In 2014, five rounds of DTU B.Tech 2015 Seat Allotment were held along with a spot round. In 2014, there were as many as 1546 seats available for various B.Tech programmes at DTU. Joint Admission Committee, Delhi will be conducting the common counselling for IIITD, DTU and IGDTUW.

I suggest you wait for the counselling to find out more about this

According to what I have found frommy research the seats are always on first preference to the major categories

I hope this helps

All the best