10 questions, graded as you go, with the reason for every answer. No sign-up.
What this covers
Hazard groups
Classes and categories
Physical hazards
Health hazards
Sample questions
GHS includes an environmental hazards group. How does WHMIS treat it?
It was not adopted, so WHMIS does not require that classification
It is mandatory, and every label must show the environment pictogram
It applies only to products that are shipped by rail or by sea
It replaces the health hazards group for products used outdoors
Show the answer
A. It was not adopted, so WHMIS does not require that classification
Canada did not adopt the GHS environmental hazards group into WHMIS. Suppliers may still show environmental information on labels and safety data sheets, but it is not required.
Reference: Health Canada, WHMIS and GHS; Hazardous Products Regulations (SOR/2015-17)
How do hazard groups, hazard classes and hazard categories relate to each other?
Categories are divided into classes, and classes are divided into groups
Classes are divided into groups, and groups are divided into categories
Groups are divided into categories, and categories are divided into classes
Groups are divided into classes, and classes are divided into categories
Show the answer
D. Groups are divided into classes, and classes are divided into categories
The two hazard groups contain hazard classes (for example, flammable liquids), and each class is split into categories or types that show how severe the hazard is.
Reference: Hazardous Products Regulations (SOR/2015-17), Part 2 (classification)
Within a WHMIS hazard class, which category number indicates the greatest hazard?
Category 2
Category 1
Category 4
Category 5
Show the answer
B. Category 1
Category 1 is always the most hazardous within a class, and the hazard decreases as the number rises. People used to systems where a higher number means higher danger often get this backwards.
Reference: Hazardous Products Regulations (SOR/2015-17), Part 2 (classification)
