It could be on a different subject, but it has to be a trick question. If they were prompted to ask more, that would undercut the whole point of the test, since OP wants employees that always ask or question.
I don’t think asking someone a trick question in an interview is a good way to gauge if they’ll push back and ask questions on the job. Also, I think that behavior is more related to the employer creating an environment where employees feel safe doing that, and isn’t really something you can draw out of a candidate during an interview, of all times.
It could be on a different subject, but it has to be a trick question. If they were prompted to ask more, that would undercut the whole point of the test, since OP wants employees that always ask or question.
I don’t think asking someone a trick question in an interview is a good way to gauge if they’ll push back and ask questions on the job. Also, I think that behavior is more related to the employer creating an environment where employees feel safe doing that, and isn’t really something you can draw out of a candidate during an interview, of all times.