WHMIS Hazard Classes and Symbols 3

Question 1

The 'health hazard' pictogram (silhouette with a starburst on the chest) is used for which conditions?

Accepted Answer

Carcinogens, mutagens, reproductive toxins, sensitizers, and STOT-repeated exposure

Answer

Skin and eye irritation only

Answer

Acute fatal toxicity

Answer

Corrosive substances

Question 2

Under WHMIS 2015, 'corrosive to metals' is classified as which type of hazard?

Accepted Answer

Physical hazard

Answer

Health hazard

Answer

Environmental hazard

Answer

Biohazard

Question 3

Which of the following is NOT a category under 'flammable liquids' in WHMIS 2015?

Accepted Answer

Flash point above 93°C

Answer

Flash point below 23°C and initial boiling point ≤35°C

Answer

Flash point below 23°C and initial boiling point >35°C

Answer

Flash point ≥23°C and ≤60°C

Question 4

What shape are all WHMIS 2015 GHS-aligned pictogram borders?

Accepted Answer

Diamond (square on point)

Answer

Circle

Answer

Square

Answer

Hexagon

Question 5

A product labelled with both the 'exploding bomb' and 'flame' pictograms most likely belongs to which class?

Accepted Answer

Organic peroxides (which can be both explosive and flammable)

Answer

Compressed gas and flammable liquid

Answer

Oxidizer and pyrophoric solid

Answer

Corrosive and flammable solid

Question 6

Which WHMIS 2015 hazard class specifically covers substances that react violently with water to release flammable gas?

Accepted Answer

Substances that in contact with water emit flammable gases

Answer

Oxidizing liquids

Answer

Self-reactive substances

Answer

Pyrophoric liquids

Question 7

Under WHMIS 2015, 'simple asphyxiants' such as nitrogen or argon are classified as which hazard type?

Accepted Answer

Physical hazard — simple asphyxiant (WHMIS-specific class)

Answer

Acute toxicity

Answer

Health hazard — STOT single exposure

Answer

Gases under pressure only