If you want to rock the WHMIS exam, practice makes perfect.
Here are some links to WHMIS practice tests:
http://www.theatreontario.org/theatresafety/downloads/whmis_test1.pdf
http://www.theatreontario.org/theatresafety/downloads/whmis_test2.pdf
Note: You will need Adobe Acrobat Reader to open this file, visit http://get.adobe.com/reader/ for instructions on how to install.