Practice Test Geeks(WHMIS) Workplace Hazardous Materials Information System Practice Test
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Hazard Classes and Pictograms Flashcards

7 cards from real WHMIS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Hazard Classes and Pictograms flashcards as text

  1. The skull and crossbones pictogram under WHMIS 2015 is applied to acute toxicity of which severity categories?

    Answer: Categories 1, 2, and 3 only

    The skull and crossbones pictogram covers acute toxicity Categories 1–3; Category 4 uses the less severe exclamation mark instead.

  2. Which WHMIS pictogram is used to signal long-term health hazards such as carcinogenicity, mutagenicity, and reproductive toxicity?

    Answer: Health hazard (silhouette with starburst)

    The health hazard pictogram (a human silhouette with a starburst on the chest) covers chronic hazards including cancer, genetic damage, and reproductive effects.

  3. The exclamation mark pictogram in WHMIS is typically associated with which level of health hazard?

    Answer: Moderate hazards including skin/eye irritation and harmful effects

    The exclamation mark signals moderate but real hazards such as skin sensitization, eye/skin irritation, and harmful (Category 4) acute toxicity.

  4. Which WHMIS pictogram is required on containers of biohazardous infectious materials?

    Answer: Biohazard symbol (overlapping circles/trefoil shape)

    The internationally recognized biohazard symbol is used exclusively for biohazardous infectious materials in WHMIS.

  5. A chemical capable of causing an allergic skin reaction (skin sensitization) upon repeated contact would display which WHMIS pictogram?

    Answer: Exclamation mark

    Skin sensitization (allergic contact dermatitis) is covered by the exclamation mark pictogram, not the health hazard pictogram.

  6. Which WHMIS hazard class exists in Canadian law but has no equivalent category in the international GHS system?

    Answer: Biohazardous infectious materials

    Biohazardous infectious materials is a WHMIS-specific hazard class added to address biological hazards in Canadian workplaces, with no GHS counterpart.

  7. A solvent that causes liver damage after repeated workplace exposures falls under which WHMIS hazard classification?

    Answer: Specific target organ toxicity – repeated exposure (STOT-RE)

    STOT-RE covers substances that cause damage to specific organs (such as the liver or kidneys) through repeated or prolonged exposure.