I got 8, but I felt the first question was very badly phrased. Some of them definitely required knowledge, and some required you to think intelligently about the question - it's easy to forget that analytical skills aren't as common in the general population as among fans.

I can see both pros and cons of doing multiple choice. Some people know an answer, but don't know how to express it in the 'right' words. For them, multiple choice can be a boon. For others, it's a lazy option that requires less thinking.