I would agree, I have my hands on some somewhat challenging questions and by far there are alot of twists and turns. What I find is that sometimes there are questions where it is more difficult to get down to one question or there are others where all questions seem a bit off. Ethics on the exam is not going to be a clear cut.
My technique is this, always read the question and try to answer it before you looking at the possible answers. Then induce and deduce the answer, that is identify the right answer and make sure you eliminate all the incorrect answers as well. Recalling is a higher memory function than recognition, so by trying to answer the question right off the bat you are accessing a higher bit of your memory. Then by identifying the correct answer of the four choices you will either be validating or invalidating your initial inuition. Often this is at least enough to narrow it down to a couple of answers and finally by eliminating the incorrect answer you have validated your initial process. One more note I picked up thanks to psych class is y our unconcious recognition is often higher than your concious recognition, so upon reading the question for the first time you may see an answer jump off the page at you, note it, because often our unconcious is right.