Hello Amisha Kirti 

IIIT Hyderabad is one of the most sought college in JEE mains.

And the CSE cutoff for IIIT Hyderabad almost shoots upto the score of 260-280, which turns out to be more than 99 percentile in JEE mains.

and even the ECE cutoff is around 340, so, with 34K rank it almost impossible to get into IIIT Hyderabad. and there is no reservation in IIIT Hyderabad. so, your OBC categiry is not going to work out there. and as far as marks are concerned then its impossible to get even ECE.

Hope that helps!