As per the eligibility to apply for IITs, NITs, IIITs & GFTIs, You should have five subjects  Language, Physics, Mathematics, Any one of (Chemistry, Biology, Biotechnology, Technical Vocational Subject), Any other subjects with a minimum 75% as General category & 65% as a reserved category in 10+2 Or you should be in top 20 percentile in class 12th from the respective board. You can check the further eligibility with the given below link.

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

Good Luck!