See in normal conditions, a student have to qualify a minimum of 75% marks in 12 th board along with a good rank to secure a seat in IIT,NIT and other colleges via JOSAA counselling.

If the government issues mandate due to the covid-19 situation and pull up this eligibility then you can get a seat in IIT's/NIT's.

I hope my answer helps you. All the very best for your future endeavors!