You will not be eligible for NITs, IIITs and GFTIs if you dont have either 75% or you are not there in top 20 percentile but you can try for DTU/NSIT with 65% and Govt college of states you can try for. Apart from this, you can apply for private colleges like VIT, SRM, Manipal etc if you have 60% but they dont consider jee score as they conduct their own entrances. So you can try for your admission accordingly.

Hope this helps!!!