The required GPA for IIIT Nuzvid stays around 9.7+. The GPA requirement for SC/ST category students is around 9.5. So, the possibility of getting admission to the institute with a 7.8 GPA is slim. Students from the physically challenged category might have a chance of getting admission with a 7.8 GPA.
No, 7.8 GPA is not good enough to get admission at IIIT Nuzvid. It is considered to be very less.
Therefore, you will not get admission to IIIT Nuzvid if your 10th score is less than 10 GPA and choose a subject you are interested in studying.