They ask inappropriate personal questions such as your family commitments, working school holidays because you have kids etc. They also ask questions about divisive issues taking place at the University. Interview questions are not consistent across applicants, and the HR representative almost always has no expertise in the area being interviewed for. It's a case study waiting to be written about how not to run an HR team/lead interviews.
Understand the department you are interviewing with and their culture. Know what to offer.