Which product fits the WHMIS class "chemicals under pressure"?
WHMIS Practice Test 4
25 questions on physical hazard classes, whmis pictograms, hazard groups, classes and categories, safe handling and storage, ontario whmis rules (regulation 860) and more.
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All 25 questions in this test
Every question and its answer choices. The correct answers and explanations appear when you take the test above.
Which product fits the WHMIS class "chemicals under pressure"?
- A gas cylinder filled with compressed oxygen for welding
- A liquid pressurized with gas in a non-aerosol container
- A liquid in an open bucket
- A spray can of air freshener
Which products carry the exploding bomb pictogram in WHMIS?
- Some self-reactives and organic peroxides
- Products that cause an allergic skin reaction
- All flammable liquids
- All compressed gases
For gases under pressure, what do the categories (compressed, liquefied, refrigerated liquefied, dissolved) describe?
- How far the gas can travel
- How toxic the gas is to breathe
- The severity of the hazard, from worst to least
- The physical state of the gas as packaged
Which habit lowers your risk when working with toxic or irritating products?
- Eating lunch at your workstation
- Keeping your gloves on while you eat lunch at your station
- Wiping your hands on your clothes
- Washing your hands and not eating in the work area
Which three items must an Ontario workplace label contain?
- Signal word, barcode, batch number, expiry date
- Price, supplier, purchase date
- Worker's name, shift, supervisor
- Product name, safe handling info, SDS note
What does the hazard category of a product tell you?
- Which province the product is sold in
- Which company made the product
- How severe the hazard is within its class
- How many litres are in the container
A label says "Fatal if inhaled." Which hazard class does this statement belong to?
- Acute toxicity
- Carcinogenicity
- Combustible dusts
- Corrosive to metals
A co-worker collapses in a tank where an asphyxiant gas leaked. What must you do before a rescue?
- Protect yourself first with proper equipment
- Turn off the lights to stop sparks, then go in
- Hold your breath and go in
- Rush in and pull them out
A large fire involves organic peroxides that could explode. What is the safest approach?
- Pour water on the containers by hand
- Evacuate and fight the fire only from a distance
- Open the containers to release pressure before it builds
- Get close and use a small extinguisher
Under WHMIS, when is a product called a "hazardous product"?
- When a worker reports feeling unwell after using it
- When it is sold in a container over 4 litres
- When it meets the criteria for a hazard class or category
- When it costs more than a set amount
A product is packed in an inner bottle inside an outer box. When can the outer box skip the WHMIS label?
- Whenever the box is made of cardboard
- When the inner label can be read through the outer box
- When the bottle holds under 5 litres
- When the box is stored in a locked room away from workers
In what year did WHMIS first become law in Canada?
- 2015
- 1978
- 1995
- 1988
Which of these is one of the six elements of a WHMIS program described by CCOHS?
- Marketing and advertising
- Purchasing and inventory
- Payroll and benefits
- Customer service
An inspection compares the label and the SDS for the same product. What should be checked?
- That the information on the two matches
- That the SDS is shorter than the label
- That both use the same font
- That both are printed on the same day
Which way of keeping SDSs would NOT meet Ontario's "readily available" standard?
- On a tablet in the work area
- In a binder at the workstation
- In an office that is locked during the night shift
- On a computer near the shop floor that all workers can use
Learning what the hazard classes mean and what is on a label and SDS is an example of:
- Supplier certification
- Emergency response training
- Site-specific training
- WHMIS education
How many sections does a WHMIS safety data sheet have?
- 9
- 12
- 16
- 20
You need to know which materials must never be stored near a product and what conditions to avoid. Section 7 refers you on. Which section has the reactivity details?
- Section 10, Stability and reactivity
- Section 13, Disposal considerations
- Section 11, Toxicological information
- Section 9, Physical and chemical properties
A supplier sends a correct WHMIS label with the shipping papers but not on the container. Does this comply?
- Only for products in metal drums
- No, the label must be on or attached to the container
- Yes, as long as the papers arrive before the product does
- Yes, if the employer files the papers
What is the special hazard of a refrigerated liquefied gas?
- It is very cold and can cause cryogenic burns
- It turns into a solid that blocks drains
- It glows and can damage eyesight
- It is very hot and can cause steam burns
Which hazard does the skull and crossbones pictogram represent?
- Poisoning or death after short exposure
- Mild, reversible skin irritation
- Fire caused by friction or sparks
- Cancer after many years of exposure
In WHMIS, what is the difference between "education" and "training"?
- Education is general WHMIS knowledge; training is site-specific
- Education is online; training is always in person
- There is no difference; the words mean the same
- Education is for supervisors; training is for workers
How does WHMIS define hazardous waste for the exclusions list?
- A hazardous product for recycling, recovery or disposal
- Any product kept in outdoor storage for more than 30 days
- Any container that is more than half empty
- Any product that has passed its expiry date
What is an aspiration hazard?
- A product that gives off a strong odour
- A product that can enter the lungs instead of the stomach
- A product that spreads infection by touch
- A product that catches fire on its own when exposed to air
Why is the GHS-aligned system called WHMIS 2015?
- Its Hazardous Products Regulations were published in February 2015
- Every workplace had to be trained by January 2015
- It replaced the Transport of Dangerous Goods Act in 2015
- 2015 was the first year WHMIS became law
All WHMIS practice tests
- WHMIS Mock Exam 1 – 25 QuestionsUntimed practice · answers explained
- WHMIS Mock Exam 2 – 25 QuestionsUntimed practice · answers explained
- WHMIS Mock Exam 3 – 25 QuestionsUntimed practice · answers explained
- WHMIS Mock Exam 4 – 25 QuestionsUntimed practice · answers explained
- WHMIS Mock Exam 5 – 25 QuestionsUntimed practice · answers explained
- What WHMIS isWhat the Workplace Hazardous Materials Information System is, its four main parts, how it lines up with the GHS, what counts as a hazardous product and which products are excluded.
- WHMIS law and enforcementWHMIS 1988, WHMIS 2015 and the December 2022 amendments, the Hazardous Products Act and Regulations, who enforces WHMIS in each jurisdiction and what an inspector checks.
- Supplier, employer and worker dutiesWho counts as a supplier, manufacturer, importer or distributor, what employers must provide, what workers must do, and the role of the health and safety committee.
- WHMIS education and trainingThe difference between education and site-specific training, who must be trained, what it must cover, the four questions every worker should be able to answer, reviews and refreshers.
- Hazard groups, classes and categoriesThe physical and health hazard groups, how classes group similar products, how categories and types show severity, and what changed in the 2022 amendments.
About this practice test
How many questions are in WHMIS practice test 4?
25 original multiple-choice practice questions covering physical hazard classes, whmis pictograms, hazard groups, classes and categories, safe handling and storage, ontario whmis rules (regulation 860), health hazard classes, emergencies, spills and first aid, what whmis is, supplier labels, whmis law and enforcement, supplier, employer and worker duties, workplace labels and other identification, whmis education and training, safety data sheets (16 sections). Each answer includes an explanation. This mixed practice set does not reproduce the official exam format or predict an official score.
Are the questions the same every time?
Yes. Practice test 4 always has the same 25 questions, so you can repeat it until you get them all right. The other 9 sets use different questions.
Are these real test questions?
No. The official question bank is not published. These are original questions written from the official handbook, which is what the real WHMIS test is based on.