Ask about the company culture and work environment, the team you’ll be working on. Compensation if they haven’t said anything yet.

This HR sniff test also serves to check for interest. When I interview, if the person has zero questions for me it means they don’t really care that much or weren’t paying attention. Questions mean you’re curious. A 10-minute speech about what the company is and the team does is not enough for you to understand the job and work, so follow-up questions are important. Also it lets the person know where your mind goes, what questions come up first, etc.

Just don’t brown-nose them and ask fake questions just to ask any :)