Maybe not the biggest offenders, but this is of the top of my head:
"The inner layer of a windscreen is made of: a) soft polycarbonate b)glass"
"The ILS uses frequencies in the : a)VHF b)UHF"
Depending on your definition of "inner", you start to understand most of these questions require a skilled usage of a lucky coin flip. Consider that some of the tests consist of as few as 25 questions, which means you can lose up to >10% of your score simply by getting a few "unlucky" coin flips.
I have attended cooking classes that have more professional tests.
No idea how much of what I learned will be useful or not, I do not know that. What I do know, what I am saying, is the tests are low quality.