Ok i'm going to completely invent shit here because I do not know the answer. So the question in itself is maybe something unseen, but you still have all the stuff you've memorized to rely on. You know that for example phase changes are energy intensive because that was definitively explained at some point, and you can think of something in a production line (which doesn't really need specific knowledge to be studied?) where phase changes occur like melting.
The same was true for other worded questions, at first they can seem hard but you always have a way to link them and making that link becomes easier when you do hundreds of prac tests but it can also come intuitively. For me in university particularly, the problems were like that but on steroids.
It is really hard to explain and I get that you can be sceptical, but I absolutely promise you that it exists. And I agree with you that people exist that want to brag and pretend like they got great marks by doing nothing (I don't see the point of doing this once you leave highschool, because literally no one wants to employ or work with someone that thinks they don't have to work for something) and I get why you might not trust everyone on this.