Hello Aspirant
You should get 200+ in jEE mains paper 2 exam to Nit seat .if you get 250+ you will definitely get good Nits as per previous years survey.But this year  it may be differ because the exam held twice .based on the two exams of jEE mains the cut-off is decided.
I will provide link from careers 360 to get to know previous years cutoff:
https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-cutoff/amp
If you have any questions further let me know.
Thank you!!!

Pt Deen Dayal Mahavidyalaya, Ladampura

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