Test your knowledge

By answering the following questions, you can test your knowledge about this unit. The questions will be presented to you in random order. As soon as you complete the questions on one page, you will gain access to the next page (the next button turns dark blue). After answering all questions your score will be shown. You can press the button "Show Answer" to display an explanation. Actually, you can do so any time, but this would be cheating ;-). Press the "Reset" button to start over.

Consider the questions only as general statements when answering them, of course you can always find an exception to the question.