Dear Aspirant,

To get into NIT you have to appear for the JEE Main exam, its registration are ongoing till 23rd May. To be eligible for JEE you must have 5 subjects in your +2 which are Physics, Chemistry, Mathematics, English, (phe, it, ip, cs, biology, hindi, etc).

JEE main is a 300 marks exam on the 75 questions from Physics Chemistry and Mathematics( 25 each)

Moreover, to get into NITs, you must have 75% in cbse boards. You can read more about JEE main here:-

https://engineering.careers360.com/exams/jee-main

Hope this helps. Thank you.