WHMIS Hazard Classes and Pictograms 2

Question 1

Which WHMIS 2015 pictogram depicts a cylinder shape and indicates gases stored under pressure?

Accepted Answer

Gas cylinder

Answer

Exploding bomb

Answer

Corrosion

Answer

Flame

Question 2

The 'flame over circle' pictogram in WHMIS specifically identifies which type of hazard?

Accepted Answer

Oxidizing substances that can intensify fires

Answer

Flammable aerosols

Answer

Self-heating materials

Answer

Pyrophoric liquids

Question 3

Sodium metal, which reacts violently with water to release hydrogen gas, belongs to which WHMIS hazard class?

Accepted Answer

Substances that emit flammable gases on contact with water (Class 4.3)

Answer

Flammable solids (Class 4.1)

Answer

Oxidizing solids (Class 5.1)

Answer

Pyrophoric solids (Class 4.2)

Question 4

A Dewar flask of liquid nitrogen in a laboratory would most prominently display which WHMIS pictogram?

Accepted Answer

Gas cylinder

Answer

Skull and crossbones

Answer

Exclamation mark

Answer

Health hazard

Question 5

Industrial-strength hydrogen peroxide at concentrations above 60% is most likely classified under which WHMIS hazard category?

Accepted Answer

Oxidizing liquids

Answer

Flammable liquids

Answer

Corrosive to metals

Answer

Biohazardous infectious materials

Question 6

Which WHMIS pictogram would appear on a product that can detonate or explode when subjected to heat or shock?

Accepted Answer

Exploding bomb

Answer

Flame

Answer

Gas cylinder

Answer

Corrosion

Question 7

A substance that ignites spontaneously when exposed to air at ambient temperatures is classified under which WHMIS class?

Accepted Answer

Class 4.2 – Pyrophoric Materials

Answer

Class 3 – Flammable Liquids

Answer

Class 4.1 – Flammable Solids

Answer

Class 5.1 – Oxidizing Substances