It’s not about highly specific knowledge: none of these questions are justifiable for a graduate level program, they are better served as prompts for essays that Americans write in their college applications. With these questions you are not going to be engaging with anything particularly deep, but you may produce something that sounds deep. But sounding deep and having actual depth are very different things, and the latter can often look very boring or painstaking, whereas the former always appears profound—and it seems like all of these questions are meant to help the student produce something “profound,” not necessarily something thoughtful or difficult.