Hello aditya, you can get a seat in NIT through jee mains exam which is conducted in two phases , the first one in January 2020 and the second one in April 2020, the cutoffs may vary slightly from year to year. You can check the exact values for previous years at https://engineering.careers360.com/articles/nits-cutoff-for-btech-computer-science-engineering .
Hope this helps.
Thank you.
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