WHMIS: Health hazard classes

All 17 questions in this test

Every question and its answer choices. The correct answers and explanations appear when you take the test above.

1. Which effect is covered by the reproductive toxicity class?

   1. Skin burns from hot surfaces
   2. Harm to fertility or the unborn child
   3. Damage to metal pipes
   4. Damage to hearing from loud workplace noise

2. What is the difference between skin corrosion and skin irritation?

   1. Corrosion affects only metal; irritation affects skin
   2. Corrosion is temporary; irritation is permanent
   3. There is no difference between them
   4. Corrosion causes severe burns; irritation is reversible damage

3. Which acute toxicity hazard statement signals the most severe hazard?

   1. May be harmful if swallowed
   2. Toxic if swallowed
   3. Harmful if swallowed
   4. Fatal if swallowed

4. A worker used a skin sensitizer several times with no reaction, then develops itching and redness. What explains this?

   1. Skin sensitizers can only cause a reaction on the first exposure
   2. The worker has become immune to the product
   3. The product must have changed suppliers
   4. Sensitizers often cause reactions only after repeated exposures

5. Which materials does CCOHS give as common skin sensitizers?

   1. Water and salt
   2. Glass and sand
   3. Latex and nickel
   4. Paper and cotton

6. Which hazard statement shows the greater hazard?

   1. Not known to cause cancer
   2. Possibly linked to cancer
   3. Suspected of causing cancer
   4. May cause cancer

7. What does the carcinogenicity hazard class warn about?

   1. The product may cause cancer
   2. The product may corrode metal
   3. The product may freeze skin
   4. The product may catch fire

8. A product can damage the liver after prolonged or repeated exposure. Which class is this?

   1. STOT – repeated exposure
   2. Acute toxicity – oral
   3. Skin corrosion
   4. Aspiration hazard

9. What can a respiratory sensitizer cause if inhaled?

   1. A rash only on the hands
   2. Damage to the liver only, with no breathing symptoms
   3. Allergy or asthma symptoms or breathing difficulties
   4. Instant freezing of the lungs

10. For WHMIS, "acute" toxicity by inhalation refers to an exposure lasting how long?

    1. 4 hours
    2. 15 minutes
    3. 24 hours
    4. 8 hours

11. A label says "Fatal if inhaled." Which hazard class does this statement belong to?

    1. Acute toxicity
    2. Carcinogenicity
    3. Combustible dusts
    4. Corrosive to metals

12. For acute toxicity by swallowing or skin contact, doses given within what time frame count as one exposure?

    1. 7 days
    2. 24 hours
    3. 4 hours
    4. 1 hour

13. What does the biohazardous infectious materials class cover?

    1. Gases that displace oxygen
    2. Organisms that can cause infection
    3. Products that corrode metal
    4. Products that catch fire in air

14. A product is classified for eye irritation (Category 2). What kind of effect does that mean?

    1. Reversible effects on the eye
    2. Effects that appear only after years
    3. Permanent blindness in all cases
    4. Damage only to contact lenses

15. What does germ cell mutagenicity mean?

    1. Brief dizziness after exposure
    2. Weakening of metal containers
    3. Gene changes that can be inherited
    4. Immediate burns to the skin

16. What is an aspiration hazard?

    1. A product that gives off a strong odour
    2. A product that can enter the lungs instead of the stomach
    3. A product that spreads infection by touch
    4. A product that catches fire on its own when exposed to air

17. Which effects are included in a category of specific target organ toxicity – single exposure?

    1. Respiratory irritation or dizziness
    2. Cancer that appears after long exposure
    3. Allergic skin reactions
    4. Heritable gene mutations