Practice Test Geeks(WHMIS) Workplace Hazardous Materials Information System Practice Test
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Hazard Classes and Symbols 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 Symbols flashcards as text

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

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

    The health hazard pictogram covers serious long-term effects: carcinogenicity, mutagenicity, reproductive toxicity, respiratory sensitization, and STOT-repeated exposure.

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

    Answer: Physical hazard

    Corrosive to metals is categorized as a physical hazard because the primary concern is damage to materials and equipment, not human tissue.

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

    Answer: Flash point above 93°C

    Flammable liquids in WHMIS 2015 have flash points at or below 60°C; liquids with flash points above 93°C fall outside this hazard class.

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

    Answer: Diamond (square on point)

    WHMIS 2015 pictograms use a red-bordered diamond shape (square rotated 45°) with a white background and black symbol, aligning with GHS international standards.

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

    Answer: Organic peroxides (which can be both explosive and flammable)

    Organic peroxides can exhibit both explosive decomposition and flammability, so they may carry both the exploding bomb and flame pictograms.

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

    Answer: Substances that in contact with water emit flammable gases

    The class 'substances that in contact with water emit flammable gases' (water-reactive substances) covers materials like sodium metal that produce hydrogen gas on contact with water.

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

    Answer: Physical hazard — simple asphyxiant (WHMIS-specific class)

    Simple asphyxiants are a WHMIS-Canada-specific physical hazard class for gases that can displace oxygen in the air and cause suffocation without being chemically toxic.