They basically ask a lot of questions related to your project so be well prepared with it and be ready to answer difficult questions about the same. Also they ask basic questions about programming languages.

They focused on your academic project and your project domain. Also know about SQL, OOPs, etc. Overall make sure you are familiar with everything mentioned in your resume. Be familiar with your academic project thoroughly. Be humble. Don't mention stuff you are not 100 percent sure about. Simple and precise answer are preferred.