WHMIS Hazard Classes and Symbols 2

Question 1

Which WHMIS 2015 pictogram shows a flame above a circle?

Accepted Answer

Oxidizing substances

Answer

Flammable liquids

Answer

Organic peroxides

Answer

Explosive materials

Question 2

Under WHMIS 2015, 'gases under pressure' includes which sub-categories?

Accepted Answer

Compressed, liquefied, refrigerated liquefied, and dissolved gases

Answer

Only compressed and liquefied gases

Answer

Flammable and non-flammable compressed gases only

Answer

Dissolved and refrigerated gases only

Question 3

The skull and crossbones pictogram in WHMIS 2015 indicates which hazard?

Accepted Answer

Acute toxicity (fatal or toxic)

Answer

Chronic health effects

Answer

Skin sensitization

Answer

Biohazardous materials

Question 4

Which class covers substances that can spontaneously ignite when exposed to air?

Accepted Answer

Pyrophoric liquids and solids

Answer

Self-reactive substances

Answer

Self-heating substances

Answer

Flammable solids

Question 5

What does the exclamation mark pictogram in WHMIS 2015 represent?

Accepted Answer

Moderate hazards like skin/eye irritation or specific target organ toxicity (single exposure)

Answer

Explosive hazard

Answer

Severe acute toxicity

Answer

Carcinogenicity

Question 6

Which WHMIS 2015 physical hazard class applies to dusts that can explode when suspended in air?

Accepted Answer

Combustible dusts

Answer

Flammable solids

Answer

Explosives

Answer

Self-reactive substances

Question 7

Which pictogram is used specifically for biohazardous infectious materials in WHMIS 2015?

Accepted Answer

The universal biohazard symbol (three interlocking circles)

Answer

Skull and crossbones

Answer

Exclamation mark

Answer

Health hazard (person with starburst on chest)