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.

• The institute offers a 6 years integrated course in B.Tech for students who have scored the highest marks in SSC, for free.
• Earlier students must score at least 9.2 GPA in SSC to be eligible for admission for a reserved category such as someone from Army family background or from PH category.
• The competition is very high. You need at least a 10 GPA to enter into IIIT Nuzvid.
• IIIT Nuzvid also has caste reservations, but the minimum GPA should be 9.5. But do not get disappointed, you can take admission in any other good college.

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.