hello aspirant......

to get an admission in nit you have to get atleast 75% in 12th board conducted by the perspective board exam and as belong to general category you need to score more than 250 then you will be in safe side and also you can get seat in a top ranked nit

i hope this information is helpful

all the best.

Hey there

In exams like JEE mains marks is not the basis for taking admission in nits but rank is. JEE mains is an exam whose Cutoff changes unpredictably every year and from recent years it's pattern is also changing so it's the ranking on which admissions are done. For nits atleast a candidate should have scored a rank less than 30000 to get a nit but at this rank he/she will not get good branch so for good nit and a desired branch one should target a rank within 10000 or 15000 atleast.

Check about JEE mains.

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/exams/jee-main&ved=2ahUKEwjysOShhuHkAhWD6XMBHaBhCsgQFjAAegQIAhAB&usg=AOvVaw1k3rMyr-Osb0qy4gsPfOaR

Good luck