Hi Varshni

With your score around 220, you'll have a rank around 8000. With this rank, chances for you to get into an NIT is actually less, as the cutoff ranks are almost around 4000, for general category. So, I'd recommend you to go through the cutoff of last year for your category for a better idea.

https://josaa.nic.in/result/result/openingclosingrank.aspx

Good Luck.

Yes, if you get more than 220 you will get admission in NIT