Hii aspirants

let me clear your doubt.

yes for iits, iit or nit you have to get a minimum of 75% in class 12th as a General category & 65% as a reserved category or you should be in top 20 percentile in your class 12 examination.

fot more details you can check the further the eligibility criteria through the link given below

https://engineering.careers360.com/articles/jee-main-eligibility-criteria

I hope my answer will be helpful for you

Good luck