Begin with a brief self-introduction, highlighting your background and expertise. Answer basic questions related to your CV, such as education, experience, and skills. Discuss your research interests in detail. Engage with the interviewer about their ongoing projects and potential collaborations.

Just ask about research experience and your interest in any research field. ask about your availability and commitment. Also they did a small test of you conducting research before the interview, they asked me to send some relevant materials about the research