I got a lot of practice at these 'tricks' while taking a few chemistry classes; all multiple choice. It was excellent practice too since I attended classes but did not study, so the answer was somewhere hidden in my mind, associated to whatever I was thinking about when it was discussed. A large part of it also, as the author also mentioned, is reverse-engineering the question to find likely decoys and falsely intuitive answers.

For those interested, it worked pretty well for itself. On one of the classes, I entered the final with a perfect 80% and got a perfect 90% on the final-- netting an A due one of the instructor's policies.