Hi dear,

           You can not be availed in IIT or NIT's even in your state after clearing JEE mains and Advanced exams even as to get admission in IIT's or NIT's you need at least 75% in 12th board exam.

Hey! Hi Gautam Kumar Raj.

Well, if you are in the top 20 percentile of your board, then YES, you are eligible to get admission into IIT's and NIT's.

I would suggest you to aim atleast 60 to 70 % in both JEE MAIN and ADVANCED to get into good colleges.

Hope this helps you.

Thanks.

All the best.