Perhaps the third question above could be improved by emphasising the word “element”:
Which of the following effects is best achieved using a pseudo-element?
I got this one in my test and read it too quickly to notice the subtlety so thought it was a trick question – “These are all done with pseudo!”
There were a couple of other questions that I thought could be worded better, but I can’t go back to it now to check which ones. How about making a way of giving feedback on question clarity from within the test?