Well, I didn't look at the number but a lot of the answers were so obvious among the very obviously wrong choices that those weren't hard to get wrong. In fact you'd never have to read the bible to know the answers to those.

The ones that weren't so obvious to me were ones I somehow remembered from my time in Confirmation class as a kid. And I'm sure something manages to stick while my Pastor practically shouts his sermon to us every Sunday. :D