Hello ,

First of All Congratulations for your result . The cutoff for GEN category is expected to be 89. So I hope you can get into a good NIT for sure . But it obviously depends on the Branch you want to take or apply for. To tally the chances of yours to getting into a NIT or IIT  you can check the previous year cut-offs:

https://www.google.com/amp/s/engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches/amp

Hope this Helped !

Best of Luck :)