In these exercises you will test your understanding (basic or advanced) of the processes involved in the Life of Iron. You will also be able to make a certificate of your performance. Click on one of the thumbnails or links above to open an exercise in a new window.
The scoring system in these exercises is based on the number of questions that have been attempted, the number of total attempts and the number of correct answers. A printed certificate contains these data and a calculated score. For example, 17 correct answers after trying to answer all 34 questions will yield a score of 50%, and giving 17 correct answers while answering only 17 of the 34 questions will also yield a score of 50%.