Hello,

According to the latest updates by the government new educational policies,

For admissions in NITs & other Centrally Funded Technical Institutions, apart from qualifying JEE Main, the eligibility is to secure a minimum of 75% marks in XII Board exams or rank among the top 20 percentile in their qualifying examinations.

So, if you have written your class 12th exam and paseed it woth more than 75%, then you are eligible for admission in the NITs.

However it also depends on the score.

Good luck!