Hey Praveen.

See the marks u have scored is enough for u to get admssioned in the NITs for pursuing ur higher studies in the field of ur interest under the SC category. U might not get chance to get admissioned in the IITs.

I m providing u link of rank prediction which might help u.

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/gate-college-predictor&ved=2ahUKEwiGjZOUoYThAhUJM48KHWX-DA8QjBAwA3oECAYQDQ&usg=AOvVaw1xiFTORDwDEpBZmadY5ZwG

Hope this helps you. Ask ifany query.

Good luck