The following items will test your grasp of the material covered in this lesson. There is only one correct
answer for each item. When you have completed the exercise, check your answer with the key that
follows. If you answer any item incorrectly, study again that part which contains the portion involved.
Metals that cannot be identified by visual examination or mechanical testing might be identified
through the use of a/an __________.
Acid spot test
Where or when does metal corrosion begin?
On exposed surfaces
In the metal core
To protect a structure's surface, a sacrificial anode is applied. What corrosion-protection method
is being used?