WHMIS Practice Test – Printable Questions and Answers

50 WHMIS quiz questions on pictograms, labels, safety data sheets and worker duties, with a separate answer key. Print it or save it as a PDF. Free, no sign-up.

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Some workplaces hand out WHMIS review sheets before the course quiz, and some people simply remember more when they write the answers by hand. This page gives you 50 original WHMIS questions on one printable sheet, mixed across all 14 of our topics: what WHMIS is, the law and who enforces it, supplier, employer and worker duties, education and training, hazard groups and classes, the nine pictograms, supplier and workplace labels, the 16-section safety data sheet, safe handling and storage, emergencies and first aid, and Ontario's Regulation 860.

The answers sit on separate pages at the end, each with a short explanation and the CCOHS fact sheet or government guide it comes from. Remember that there is no single national WHMIS exam: your employer or training provider writes its own quiz, so treat a high score here as proof that you understand the system, not as a copy of any course test. Our online mock exam uses 25 questions with 20 needed to pass, which is our own standard. Press print and choose Save as PDF to keep a copy.

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1.Who must classify a hazardous product that an employer produces for use only in its own workplace?
1. The nearest supplier
2. Health Canada
3. The workers who use it
4. The employer
2.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
3.Which of these is a worker's responsibility under WHMIS?
1. Inspecting the supplier's factory
2. Taking part in WHMIS education and training
3. Writing safety data sheets for new products
4. Classifying products into hazard classes
4."Keep the container tightly closed" is an example of what label element?
1. Supplemental hazard data
2. A hazard statement
3. A signal word
4. A precautionary statement
5.What should you do with an empty container that held a corrosive or toxic product?
1. Treat it as hazardous; keep it closed and do not reuse it
2. Use it to store drinking water
3. Rinse it once with water and then reuse it for food storage
4. Leave it open to air out
6.Which hazard does the skull and crossbones pictogram represent?
1. Poisoning or death after short exposure
2. Mild, reversible skin irritation
3. Fire caused by friction or sparks
4. Cancer after many years of exposure
7.Which federal department is responsible for the WHMIS supplier laws?
1. Canada Revenue Agency
2. Transport Canada
3. Health Canada
4. Environment and Climate Change Canada
8.Your workplace keeps SDSs only on a computer. Which condition must be met?
1. Workers must pay to print copies
2. The SDSs must be in one language only
3. Workers are trained on it and can ask for paper
4. The computer must be in the owner's office
9.A drum is sitting in a trans-shipment warehouse, unchanged, waiting to be loaded for delivery. Which rules apply?
1. Consumer product rules
2. WHMIS workplace label rules
3. No rules apply while it waits to be loaded
4. Transportation of dangerous goods rules
10.Where will you find a product's hazard class and category?
1. On the product's barcode
2. Only on the purchase order
3. In Section 2 of the SDS
4. Only on the shipping invoice
11.A label says the product releases flammable gas in contact with water. What is the risk?
1. Water makes the product completely safe
2. Water causes the product to lose its smell
3. Water can release a gas that may ignite
4. Water turns the product into a solid
12.An inspection compares the label and the SDS for the same product. What should be checked?
1. That the information on the two matches
2. That the SDS is shorter than the label
3. That both use the same font
4. That both are printed on the same day
13.Your employer hires an outside company to deliver WHMIS training. Who remains legally responsible for it?
1. The employer
2. The health and safety committee
3. The training company
4. Each individual worker
14.Where on the SDS will you find the emergency telephone number for the product?
1. Section 15, Regulatory information
2. Section 9, Physical properties
3. Section 1, Identification
4. Section 12, Ecological information
15.Why is there no Explosives hazard class in WHMIS?
1. Explosives are covered by other Canadian legislation
2. Explosives are listed as a health hazard instead
3. Explosives are banned in all workplaces
4. Explosives must use a workplace label only
16.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
17.You were just hired and see a hazardous product you have never been trained on. What does WHMIS guidance say?
1. Use it only if a co-worker is watching
2. Use it carefully and read the label later
3. Do not use it until you are trained in safe procedures
4. Use it, since training can wait until the yearly review
18."Contains gas under pressure; may explode if heated" is an example of what label element?
1. A product identifier
2. A precautionary statement
3. A hazard statement
4. A signal word
19.Why should you remove rings and watches before handling a refrigerated liquefied gas?
1. They can freeze to your skin if splashed
2. They are a choking hazard
3. They can cause a static spark
4. They interfere with the regulator
20.A pictogram shows a cylinder lying on its side. What hazard does it identify?
1. Corrosive to metals
2. Acute toxicity
3. Flammable liquid
4. Gas under pressure
21.When may a Hazardous Products Act inspector enter a workplace?
1. Only after giving 30 days' written notice
2. With reasonable grounds to believe a hazardous product is there
3. Only if a worker has filed a complaint
4. Only with the written consent of every worker present at the site
22.Compared with the label, the SDS gives:
1. Only the price and supplier name
2. Only information for firefighters
3. More detailed hazard and safety information
4. Less information, in a shorter and simpler form
23.Must an Ontario employer keep paper copies of SDSs?
1. Only for products made in Ontario
2. No, electronic SDSs comply
3. Yes, paper copies are always required
4. Yes, both paper and electronic are required
24.Which of these is a benefit CCOHS lists for aligning WHMIS with the GHS?
1. Workers no longer need site-specific training
2. Suppliers may choose any SDS layout they like
3. Standardized hazard and precautionary statements
4. Hazardous products no longer need labels
25.Why can a cylinder of compressed gas be dangerous even if the gas is not flammable?
1. Compressed gases always cause cancer
2. The high pressure can make it explode if heated
3. The cylinder paint is toxic
4. Compressed gases react with sunlight to form acid
26.Your company requires full labels on every decanted container, even ones used right away. Is this allowed?
1. Only if the supplier agrees in writing
2. No, only Health Canada can set label rules
3. No, it conflicts with WHMIS law
4. Yes, companies may go beyond WHMIS minimums
27.After WHMIS training, which question should you be able to answer for every hazardous product you work with?
1. What does it cost per litre?
2. Which company manufactured its container?
3. When was it first invented?
4. How do I protect myself from its hazards?
28.In case of fire, how many exit paths should you know from your work area?
1. Only the main entrance
2. At least two
3. One is enough
4. None, if there is a sprinkler
29.The GHS includes an environmental hazards group. What is its status in WHMIS?
1. Not adopted, though suppliers may still show it
2. Required only for products made and sold in Canada
3. Required on every WHMIS label
4. Replaced the health hazards group
30.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
31.A company makes a cleaning mixture on site and uses it only in its own workplace. What must the employer do?
1. Nothing, because it is never sold
2. Classify it, apply a workplace label and prepare an SDS
3. Label it only if a worker asks
4. Send a sample to Health Canada for testing and approval first
32.Which two signal words are used on WHMIS labels?
1. Danger and Warning
2. Stop and Alert
3. Hazard and Risk
4. Caution and Notice
33.What is the safe way to move a gas cylinder?
1. Carrying it on your shoulder
2. With a hand truck or cart made for cylinders
3. Rolling it on its side across the floor
4. Dragging it by the valve
34.A pictogram shows the outline of a person's head and chest with a star-shaped burst on the chest. What does it warn about?
1. Gas stored under pressure in a cylinder
2. Mild skin irritation
3. Serious health effects such as cancer
4. Danger of explosion
35.Which federal law sets out the WHMIS duties of suppliers?
1. The Hazardous Products Act
2. The Canada Consumer Product Safety Act
3. The Fisheries Act
4. The Criminal Code
36.Where on the SDS will you find safe storage conditions, including incompatible materials?
1. Section 5, Fire-fighting measures
2. Section 16, Other information
3. Section 1, Identification
4. Section 7, Handling and storage
37.How must hazardous waste containers be handled in an Ontario workplace?
1. Clear identification plus worker education
2. With a full supplier label and SDS
3. With no identification at all
4. Only with the original product label
38.A workplace uses several products that meet WHMIS hazard criteria. What must be in place?
1. A WHMIS program, including education and training
2. Nothing, unless more than 20 workers are employed
3. A permit from Health Canada for each product
4. Only a sign at the entrance listing the products
39.What is the class "physical hazards not otherwise classified" for?
1. Health effects that appear years after the first exposure
2. Reaction hazards not covered by any other physical class
3. Products too small to need a label
4. Products whose supplier is unknown
40.The supplier label on a drum has been torn and can no longer be read. What must happen?
1. Write the date on the drum
2. Move the drum to a storage room and keep using it
3. Put a new supplier or workplace label on it
4. Keep using the drum as is
41.Learning what the hazard classes mean and what is on a label and SDS is an example of:
1. Supplier certification
2. Emergency response training
3. Site-specific training
4. WHMIS education
42.A co-worker collapses in a tank where an asphyxiant gas leaked. What must you do before a rescue?
1. Protect yourself first with proper equipment
2. Turn off the lights to stop sparks, then go in
3. Hold your breath and go in
4. Rush in and pull them out
43.Some hazard classes use "types" instead of numbered categories. How are types identified?
1. With Roman numerals such as I and II
2. With colours such as red and yellow
3. With letters such as A, B and C
4. With percentages such as 10% and 20%
44.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
45.Who must educate and train workers about the hazardous products in their workplace?
1. Each worker on their own
2. Health Canada
3. The employer
4. The product's supplier
46.Which signal word indicates the more severe hazard?
1. Notice
2. Caution
3. Danger
4. Warning
47.Aerosol cans should not be exposed to temperatures above what?
1. 80 °C (176 °F)
2. 25 °C (77 °F)
3. 50 °C (122 °F)
4. 35 °C (95 °F)
48.A pictogram shows liquid dripping from containers onto a metal bar and onto a hand. What does it mean?
1. The product is corrosive
2. The product is under pressure
3. The product is flammable
4. The product is an oxidizer
49.An inspector stops you at your workstation. Which question might they ask to confirm you were trained?
1. What would you do in an emergency with this product?
2. How many years have you worked here?
3. How much did this product cost?
4. Who delivered this product to the loading dock last week?
50.A supplier tells a buyer the SDS can be downloaded from its website and sends only the link. Does this meet the rules?
1. No, a link alone is not acceptable
2. Yes, if the buyer has internet access
3. Only for products under 100 mL
4. Yes, a website link is enough

Answer key with explanations

1. D — The employer
Employers who produce hazardous products for their own workplaces have the duty to assess and classify the hazards and provide labels and SDSs.
Hazard groups, classes and categories · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 5 WHMIS – Hazard Classes and Categories, How does WHMIS classification work?
2. A — The product may cause cancer
Carcinogenicity includes products that may lead to cancer or increase the incidence of cancer.
Health hazard classes · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 5 WHMIS – Hazard Classes and Categories, Health hazard classes — carcinogenicity
3. B — Taking part in WHMIS education and training
Workers must participate in WHMIS education and training, protect themselves and co-workers, and help identify and control hazards.
Supplier, employer and worker duties · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 3 WHMIS – WHMIS Program, WHMIS – General — roles and responsibilities of workers
4. D — A precautionary statement
Precautionary statements give advice on preventing harm, covering handling, storage, first aid, PPE and emergencies.
Supplier labels · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 7 WHMIS – Labels, What is a precautionary statement?
5. A — Treat it as hazardous; keep it closed and do not reuse it
Empty containers may hold hazardous residue; store them separately, keep them closed and do not reuse them.
Safe handling and storage · Based on: CCOHS OSH Answers: How to Work Safely with Hazardous Products (pictogram series, revised 2024), Ch. 9 Safe handling and storage, All pictograms — empty containers
6. A — Poisoning or death after short exposure
Skull and crossbones is used for acute toxicity Categories 1 to 3: products that can kill or poison after short exposure to small amounts.
WHMIS pictograms · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 6 WHMIS – Pictograms, Pictogram names — Skull and crossbones
7. C — Health Canada
Health Canada administers the Hazardous Products Act and Regulations, which set the supplier requirements for labels and SDSs.
WHMIS law and enforcement · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 2 WHMIS – Legislation, Important information — federal supplier laws
8. C — Workers are trained on it and can ask for paper
Electronic SDSs are allowed if all workers can access and are trained on the device, it is kept working, and a hard copy is given on request.
Safety data sheets (16 sections) · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 8 WHMIS – Safety Data Sheets (SDSs), As an employer, do I have responsibilities for SDSs?
9. D — Transportation of dangerous goods rules
Goods held unchanged in a trans-shipment warehouse for transport fall under TDG; repackaging or using them there can bring in WHMIS.
Ontario WHMIS rules (Regulation 860) · Based on: Ontario WHMIS – A guide to the legislation (updated 2026), Ch. 1-3 The WHMIS legislation, WHMIS and the employer, WHMIS and the worker, The WHMIS legislation — WHMIS and the transportation of dangerous goods
10. C — In Section 2 of the SDS
The hazard class and category are provided in Section 2 (Hazard identification) of the SDS and are reflected on the supplier label.
What WHMIS is · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 1 WHMIS – General, How do I know if a product is a hazardous product?
11. C — Water can release a gas that may ignite
These products react with water to release flammable gases, which in some cases may ignite spontaneously.
Physical hazard classes · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 5 WHMIS – Hazard Classes and Categories, Physical hazard classes — substances which, in contact with water, emit flammable gases
12. A — That the information on the two matches
Inspections check that SDS and label information for the same product match, for example the product name and supplier.
Workplace labels and other identification · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 7 WHMIS – Labels, WHMIS Program — inspections
13. A — The employer
Training may be delivered by a competent outside provider, but employers remain legally responsible for ensuring workers are protected.
WHMIS education and training · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 4 WHMIS – Education and Training, Who should provide the education and training?
14. C — Section 1, Identification
Section 1 lists the supplier identifier and an emergency phone number, plus any limits such as hours or language.
Emergencies, spills and first aid · Based on: CCOHS OSH Answers: How to Work Safely with Hazardous Products (pictogram series, revised 2024), Ch. 10 Emergencies and first aid, SDS — emergency telephone number
15. A — Explosives are covered by other Canadian legislation
The GHS defines an Explosives class, but WHMIS does not include it because explosives are regulated under other laws such as the Explosives Act.
Hazard groups, classes and categories · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 5 WHMIS – Hazard Classes and Categories, What is a hazard class? — note on explosives
16. B — Harm to fertility or the unborn child
Reproductive toxicity covers damage to sexual function and fertility, harm to the unborn child, and effects on or via breast milk.
Health hazard classes · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 5 WHMIS – Hazard Classes and Categories, Health hazard classes — reproductive toxicity
17. C — Do not use it until you are trained in safe procedures
Workers should not use a hazardous product unless they have been trained in the safe work procedures for it.
Supplier, employer and worker duties · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 3 WHMIS – WHMIS Program, WHMIS Program — worker responsibilities
18. C — A hazard statement
Hazard statements are standardized sentences that describe the nature of the hazard, such as a gas that may explode if heated.
Supplier labels · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 7 WHMIS – Labels, What is a hazard statement?
19. A — They can freeze to your skin if splashed
With extremely cold refrigerated gases, jewellery can freeze to exposed skin if splashed, so watches, rings and bracelets should not be worn.
Safe handling and storage · Based on: CCOHS OSH Answers: How to Work Safely with Hazardous Products (pictogram series, revised 2024), Ch. 9 Safe handling and storage, Gas cylinder — handling: refrigerated liquefied gases
20. D — Gas under pressure
The gas cylinder pictogram is used for gases under pressure, including compressed, liquefied, refrigerated liquefied and dissolved gases.
WHMIS pictograms · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 6 WHMIS – Pictograms, Pictogram names — Gas cylinder
21. B — With reasonable grounds to believe a hazardous product is there
HPA inspectors may enter if they have reasonable grounds to believe a WHMIS-related activity is happening or a hazardous product is located there.
WHMIS law and enforcement · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 2 WHMIS – Legislation, What happens when an inspector visits the workplace?
22. C — More detailed hazard and safety information
SDSs provide more detailed hazard information than the label, including safe use, symptoms of exposure and emergency steps.
Safety data sheets (16 sections) · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 8 WHMIS – Safety Data Sheets (SDSs), What is a safety data sheet (SDS)?
23. B — No, electronic SDSs comply
Providing SDSs in electronic form complies with the OHSA; paper copies are not required in Ontario.
Ontario WHMIS rules (Regulation 860) · Based on: Ontario WHMIS – A guide to the legislation (updated 2026), Ch. 1-3 The WHMIS legislation, WHMIS and the employer, WHMIS and the worker, WHMIS and the employer — Electronic copy
24. C — Standardized hazard and precautionary statements
GHS alignment brought standardized wording for hazard and precautionary statements and a standard SDS format, among other benefits.
What WHMIS is · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 1 WHMIS – General, What is WHMIS? — benefits of GHS alignment
25. B — The high pressure can make it explode if heated
Compressed, liquefied and dissolved gases are hazardous because of the high pressure inside the container, which may explode if heated.
Physical hazard classes · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 5 WHMIS – Hazard Classes and Categories, Physical hazard classes — gases under pressure
26. D — Yes, companies may go beyond WHMIS minimums
CCOHS notes a company may have its own labelling rules that go above the WHMIS requirements.
Workplace labels and other identification · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 7 WHMIS – Labels, Note on company rules
27. D — How do I protect myself from its hazards?
Workers should know the product's hazards, how to protect themselves, what to do in an emergency and where to get more information.
WHMIS education and training · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 4 WHMIS – Education and Training, Briefly, what does successful education and training look like?
28. B — At least two
CCOHS advises being aware of at least two different exit paths in the event of fire.
Emergencies, spills and first aid · Based on: CCOHS OSH Answers: How to Work Safely with Hazardous Products (pictogram series, revised 2024), Ch. 10 Emergencies and first aid, Flame / Gas cylinder — emergency: exits
29. A — Not adopted, though suppliers may still show it
WHMIS did not adopt the GHS environmental hazards group, but including environmental information on labels and SDSs is allowed.
Hazard groups, classes and categories · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 5 WHMIS – Hazard Classes and Categories, What is a hazard group? — environmental hazards
30. A — Acute toxicity
Acute toxicity covers products that are fatal, toxic or harmful if inhaled, swallowed or in contact with skin after a short exposure.
Health hazard classes · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 5 WHMIS – Hazard Classes and Categories, Health hazard classes — acute toxicity
31. B — Classify it, apply a workplace label and prepare an SDS
An employer who produces a hazardous product for its own use must assess and classify it, put a workplace label on it and prepare a compliant SDS.
Supplier, employer and worker duties · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 3 WHMIS – WHMIS Program, WHMIS – General — employers who produce hazardous products
32. A — Danger and Warning
WHMIS uses only two signal words: "Danger" for more severe hazards and "Warning" for less severe hazards.
Supplier labels · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 7 WHMIS – Labels, What is a signal word?
33. B — With a hand truck or cart made for cylinders
Move cylinders using a hand truck or cart designed for the purpose, and never drop them or bang them together.
Safe handling and storage · Based on: CCOHS OSH Answers: How to Work Safely with Hazardous Products (pictogram series, revised 2024), Ch. 9 Safe handling and storage, Gas cylinder — handling
34. C — Serious health effects such as cancer
The health hazard pictogram is used for serious effects such as carcinogenicity, mutagenicity, reproductive toxicity, respiratory sensitization and organ damage.
WHMIS pictograms · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 6 WHMIS – Pictograms, How to Work Safely — Health hazard: what the pictogram means
35. A — The Hazardous Products Act
The Hazardous Products Act and its Hazardous Products Regulations set supplier duties for classification, labels and safety data sheets.
WHMIS law and enforcement · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 2 WHMIS – Legislation, Important information — federal supplier laws
36. D — Section 7, Handling and storage
Section 7 covers precautions for safe handling and conditions for safe storage, including incompatible materials.
Safety data sheets (16 sections) · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 8 WHMIS – Safety Data Sheets (SDSs), What information is on the SDS? — Section 7
37. A — Clear identification plus worker education
Employers must ensure safe storage and handling of hazardous waste through identification and worker education; no label or SDS is required.
Ontario WHMIS rules (Regulation 860) · Based on: Ontario WHMIS – A guide to the legislation (updated 2026), Ch. 1-3 The WHMIS legislation, WHMIS and the employer, WHMIS and the worker, WHMIS and the employer — Hazardous waste
38. A — A WHMIS program, including education and training
All hazardous products used in the workplace are covered by WHMIS, so a WHMIS program with worker education and training is required.
What WHMIS is · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 1 WHMIS – General, What products does WHMIS cover?
39. B — Reaction hazards not covered by any other physical class
This class covers physical hazards that occur by chemical reaction and cause serious injury or death but are not covered by another physical class.
Physical hazard classes · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 5 WHMIS – Hazard Classes and Categories, Physical hazard classes — physical hazards not otherwise classified
40. C — Put a new supplier or workplace label on it
A workplace label is required when a supplier label is lost or becomes illegible, unless a new supplier label is obtained.
Workplace labels and other identification · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 7 WHMIS – Labels, Are there different types of labels? — workplace label required
41. D — WHMIS education
General information such as hazard classes and how to read labels and SDSs is WHMIS education, which applies in any workplace.
WHMIS education and training · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 4 WHMIS – Education and Training, Is there a difference between WHMIS education and WHMIS training?
42. A — Protect yourself first with proper equipment
In oxygen-deficient areas, rescuers must ensure their own safety, for example with suitable protective equipment, before attempting a rescue.
Emergencies, spills and first aid · Based on: CCOHS OSH Answers: How to Work Safely with Hazardous Products (pictogram series, revised 2024), Ch. 10 Emergencies and first aid, Simple asphyxiants — emergency: rescue
43. C — With letters such as A, B and C
Categories may also be called types, and types are assigned letters (A, B and so on), as in organic peroxides and self-reactive substances.
Hazard groups, classes and categories · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 5 WHMIS – Hazard Classes and Categories, What is a hazard category?
44. C — Allergy or asthma symptoms or breathing difficulties
A respiratory sensitizer may cause allergy or asthma symptoms or breathing difficulties if inhaled.
Health hazard classes · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 5 WHMIS – Hazard Classes and Categories, Health hazard classes — respiratory or skin sensitization
45. C — The employer
Employers must educate and train workers on the hazards and safe use of hazardous products in the workplace.
Supplier, employer and worker duties · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 3 WHMIS – WHMIS Program, WHMIS – General — roles and responsibilities of employers
46. C — Danger
"Danger" is used for high-risk hazards, while "Warning" is used for less severe hazards.
Supplier labels · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 7 WHMIS – Labels, What is a signal word?
47. C — 50 °C (122 °F)
CCOHS says not to expose aerosols to temperatures exceeding 50 °C, and to protect them from sunlight, because they may burst.
Safe handling and storage · Based on: CCOHS OSH Answers: How to Work Safely with Hazardous Products (pictogram series, revised 2024), Ch. 9 Safe handling and storage, Flame pictogram — storage
48. A — The product is corrosive
The corrosion pictogram warns of products that can damage metal or cause serious skin burns and eye damage.
WHMIS pictograms · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 6 WHMIS – Pictograms, Pictogram names — Corrosion
49. A — What would you do in an emergency with this product?
Inspectors may confirm training by asking workers about a product's hazards, how they protect themselves, what to do in an emergency and where to find more information.
WHMIS law and enforcement · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 2 WHMIS – Legislation, What happens when an inspector visits the workplace?
50. A — No, a link alone is not acceptable
Suppliers must provide the SDS on paper or electronically (such as an email attachment); giving only a web address or link is not acceptable.
Safety data sheets (16 sections) · Based on: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 8 WHMIS – Safety Data Sheets (SDSs), How may a supplier provide the SDS to their customers?

Original practice questions by Canada Exam Prep, written from the official handbook. Not official test questions. Free to print for personal study.

FAQ

WHMIS practice test (printable PDF): common questions

Is there an official WHMIS test PDF with answers?

No. Canada has no national WHMIS exam, so there is no official question paper. The quiz you write is set by your employer or training provider. The free official reading material is the CCOHS WHMIS fact sheets and whmis.org, and every question here is original, written from those sources.

Does this sheet follow the amended WHMIS rules?

Yes. The questions follow the current CCOHS fact sheets, which reflect the amendments in force since December 15, 2022. The nine pictograms, the signal words Danger and Warning and the 16 SDS sections did not change from WHMIS 2015, so most older training material still lines up.

How do I save this page as a PDF?

Press the print button and choose Save as PDF in place of a printer. Menus, buttons and ads are hidden in the printout, and the answer key begins on a new page after question 50.

WHMIS Practice Test – Printable Questions and Answers