WHMIS Hazard Classes and Symbols 5

Question 1

WHMIS 2015 replaced WHMIS 1988 by aligning with which international system?

Accepted Answer

UN Globally Harmonized System (GHS) of Classification and Labelling of Chemicals

Answer

ISO Hazard Communication Standard

Answer

OSHA HazCom 1994

Answer

EU REACH Regulation

Question 2

In WHMIS 2015, which hazard class replaced the old WHMIS 1988 'biohazardous infectious material' class?

Accepted Answer

It was retained as a WHMIS-specific (non-GHS) class with the same name

Answer

It was eliminated entirely

Answer

It was merged into acute toxicity

Answer

It became part of the health hazard n.o.s. category

Question 3

A workplace receives a drum labelled with only a 'flame' pictogram and no other hazard symbols. What does this most likely indicate?

Accepted Answer

The product poses a flammable physical hazard with no other classified hazards

Answer

The product is explosive

Answer

The label is incomplete and violates WHMIS

Answer

The product is an oxidizer

Question 4

Under WHMIS 2015, 'STOT' stands for what?

Accepted Answer

Specific Target Organ Toxicity

Answer

Short-Term Organ Toxicity

Answer

Systemic Toxic Organ Threshold

Answer

Standard Toxic Outcome Testing

Question 5

Which WHMIS 2015 class covers products that release heat slowly through reaction with oxygen and may ignite after hours or days?

Accepted Answer

Self-heating substances and mixtures

Answer

Pyrophoric solids

Answer

Flammable solids

Answer

Self-reactive substances

Question 6

A chemical is classified as a reproductive toxin under WHMIS 2015. Which pictogram will appear on its label?

Accepted Answer

Health hazard (person with starburst on chest)

Answer

Skull and crossbones

Answer

Exclamation mark

Answer

Corrosion

Question 7

Which of the following is a WHMIS-Canada-specific hazard class NOT found in the base GHS?

Accepted Answer

Combustible dusts

Answer

Acute toxicity

Answer

Flammable liquids

Answer

Oxidizing gases