Welcome to gunsparky. This site is intended to help you get an idea of how your study is going and to give you some fedback on common errors, along with practice. Some students spend way too much time on here and really should get a life. Believe me there are more important things than getting 100% in a test.
This moodle has been running in various forms since 2013 and this is the most polished version to date, however somtimes people find errors. if you find something that you believe to be incorrect, please let me know via a message and if you can, cut and paste the first part of the text of the question into the message.
There are over 400 questions in this moodle and the topic name and first part of the text help a lot.
Thanks for giving it a go and
enjoy
Kev