Research the Company, and Show What You Know
Ask the recruiter or the person who invited you to the interview for information if you don’t know who the interviewees are. On LinkedIn, you can discover a lot about the interviewers, such as where they went to school, what other organizations they worked for, and so on.
There’s no justification for asking generic questions about a firm during an interview. Doing so demonstrates that you were uninterested in conducting any investigation.