WHMIS Practice Test 2026: Test de práctica 4

Test de práctica 4 de 4 de WHMIS Practice Test: 25 preguntas más con respuestas y explicaciones.

Seguridad laboral
Canadá
100 preguntas
Revisado el 10 de octubre de 2026

Pregunta 1 de 25
A supplier learns of significant new data about a product. How long does the supplier have to update the SDS?
- 90 days
- 3 years
- 7 days
- 180 days
Ver respuesta
Respuesta: A. 90 days
Suppliers must update the SDS within 90 days of becoming aware of significant new data.
Pregunta 2 de 25
Under the federal Hazardous Products Regulations, must suppliers update every SDS every 3 years?
- Yes, every SDS expires after 1 year and must be replaced
- No, they must update it when significant new data become available
- Yes, every SDS expires after 3 years and must be replaced
- No, an SDS never has to be updated once it is written
Ver respuesta
Respuesta: B. No, they must update it when significant new data become available
The 3-year rule was part of WHMIS 1988. Some provinces still require employers to seek updated SDSs every 3 years.
Pregunta 3 de 25
Who must be able to get to the SDSs in a workplace easily?
- Only the employer and the company's managers and supervisors
- Only the supplier who sold the product to the employer
- Only firefighters and other emergency services when called
- Exposed workers and the health and safety committee or representative
Ver respuesta
Respuesta: D. Exposed workers and the health and safety committee or representative
Employers must make SDSs readily available to exposed workers and to the health and safety committee or representative.
Pregunta 4 de 25
Who usually writes the SDS for a hazardous product that is sold?
- The worker who uses it
- The local fire department
- The health and safety committee
- The manufacturer or supplier
Ver respuesta
Respuesta: D. The manufacturer or supplier
Suppliers prepare SDSs. An employer may have to prepare one for a hazardous product it produces and uses in its own workplace.
Pregunta 5 de 25
Who must decide whether a product is a hazardous product and prepare its label and SDS before selling it?
- The health and safety committee
- The supplier
- The customer who buys it
- The worker who will use it
Ver respuesta
Respuesta: B. The supplier
Suppliers must classify their products and prepare labels and SDSs for hazardous products sold for workplace use.
Pregunta 6 de 25
Which is an employer duty under WHMIS?
- Translate every SDS into a third language chosen by workers
- Write and update the federal Hazardous Products Regulations
- Educate and train workers on the hazards and safe use of hazardous products
- Classify every product before the supplier is allowed to sell it
Ver respuesta
Respuesta: C. Educate and train workers on the hazards and safe use of hazardous products
Employers must train workers, make sure products are labelled, prepare workplace labels and SDSs when needed, and put controls in place.
Pregunta 7 de 25
Which is a worker duty under WHMIS?
- Take part in WHMIS training and help identify and control hazards
- Prepare supplier labels for every product the company buys
- Decide which hazardous products the company buys and sells
- Inspect the supplier's factory once a year
Ver respuesta
Respuesta: A. Take part in WHMIS training and help identify and control hazards
Workers must participate in training, protect themselves and co-workers, and help identify and control hazards.
Pregunta 8 de 25
In WHMIS, what is the difference between "education" and "training"?
- They mean the same thing, and the two words can be swapped
- Education is always done online; training is always done in a classroom
- Education is only for managers; training is only for workers on the floor
- Education is general information about WHMIS; training is specific to your site and job
Ver respuesta
Respuesta: D. Education is general information about WHMIS; training is specific to your site and job
Education covers portable knowledge like how WHMIS works. Training covers site- and job-specific procedures.
Pregunta 9 de 25
You change employers. What WHMIS training do you need at the new workplace?
- A national WHMIS exam set and marked by Health Canada
- None, as long as you had WHMIS training at any job in the past
- Only a new printed copy of your old training certificate
- Training specific to the new site and the products you will use there
Ver respuesta
Respuesta: D. Training specific to the new site and the products you will use there
General education may carry over, but every workplace must give training specific to its own site and work.
Pregunta 10 de 25
How often should an employer review its WHMIS education and training program?
- At least once a year, and more often if conditions change
- Only when a government inspector asks for a review
- Once every 10 years, or whenever the law changes
- Only after a worker has been injured by a hazardous product
Ver respuesta
Respuesta: A. At least once a year, and more often if conditions change
CCOHS advises reviewing the program at least annually, and sooner if work conditions, processes or hazard information change.
Pregunta 11 de 25
Who should an employer consult when developing and reviewing its WHMIS training program?
- The sales representative for the hazardous products
- The local police or the municipal bylaw office
- Only the company's lawyer or insurance broker
- The health and safety committee or representative
Ver respuesta
Respuesta: D. The health and safety committee or representative
Employers are expected to consult the health and safety committee (or representative) on the program.
Pregunta 12 de 25
Which worker must receive WHMIS education and training?
- A worker who stores or handles hazardous products
- A worker who never comes near hazardous products
- A visitor who never enters the work area
- A customer in the store front
Ver respuesta
Respuesta: A. A worker who stores or handles hazardous products
Training is needed for workers who use, store, handle or dispose of hazardous products, who may be exposed, who supervise them, or who respond to emergencies.
Pregunta 13 de 25
When is refresher WHMIS training generally needed?
- Only once a worker has 10 years of experience
- When a new hazardous product is brought into the workplace
- Never, once the first WHMIS training has been done
- Only when a worker asks the employer for more training
Ver respuesta
Respuesta: B. When a new hazardous product is brought into the workplace
Refresher training is needed when conditions change, new products arrive or new hazard information becomes available.
Pregunta 14 de 25
An employer hires a training company to teach WHMIS. Who is still legally responsible for protecting the workers?
- The workers themselves
- The supplier of the products
- The employer
- The training company only
Ver respuesta
Respuesta: C. The employer
Employers may use a qualified trainer, but they remain legally responsible for protecting workers.
Pregunta 15 de 25
How might an employer check that workers understood their WHMIS training?
- With a written test, a practical demonstration or another method
- There is no way to check what workers have learned
- By asking the supplier to phone each worker afterwards
- By checking the revision dates on all the SDSs
Ver respuesta
Respuesta: A. With a written test, a practical demonstration or another method
Some provinces and territories require employers to evaluate workers' knowledge, for example by written tests or practical demonstrations.
Pregunta 16 de 25
Which topic must WHMIS training cover?
- Emergency procedures for the hazardous products you use
- How to set prices and discounts for chemical products
- How to write a full SDS from scratch for a new product
- How to become a licensed supplier of hazardous products
Ver respuesta
Respuesta: A. Emergency procedures for the hazardous products you use
Training must cover safe use, handling and disposal, procedures for products in the air, and all emergency procedures.
Pregunta 17 de 25
Which federal department administers the Hazardous Products Act?
- Environment and Climate Change Canada
- Transport Canada
- Canada Revenue Agency
- Health Canada
Ver respuesta
Respuesta: D. Health Canada
Health Canada administers the Hazardous Products Act and acts as secretariat for the WHMIS partnership.
Pregunta 18 de 25
Where should flammable products NOT be stored, if it can be avoided?
- In a basement
- On the ground floor
- In an approved flammable storage cabinet
- In a well-ventilated storage room
Ver respuesta
Respuesta: A. In a basement
CCOHS advises avoiding basement storage for flammable products. Ground-floor storage is easier to reach in an emergency.
Pregunta 19 de 25
What kind of storage is best for flammable liquids?
- An approved flammable storage cabinet
- A cardboard box near a heater
- Any metal shelf next to the boiler
- A desk drawer
Ver respuesta
Respuesta: A. An approved flammable storage cabinet
Use approved flammable storage equipment, such as flammable cabinets, and keep containers tightly closed.
Pregunta 20 de 25
Why should you avoid paper towels or sawdust to soak up a flammable liquid spill?
- They are combustible and can add fuel to a fire
- They are too expensive
- They make the spill spread faster
- They change the colour of the liquid
Ver respuesta
Respuesta: A. They are combustible and can add fuel to a fire
Do not use combustible materials to absorb spills of flammable products. Use proper spill materials and report the spill.
Pregunta 21 de 25
When you pour a volatile flammable liquid from one metal container to another, what may you need to do to prevent sparks?
- Ground and bond the containers
- Wear wool clothing
- Turn on a nearby heater to dry the air
- Pour it as fast as possible
Ver respuesta
Respuesta: A. Ground and bond the containers
Static electricity can ignite vapours. Grounding and bonding containers and receiving equipment helps prevent static discharge.
Pregunta 22 de 25
How much of a flammable product should you take out for a job?
- As much as the container holds
- A full day's supply, to save trips
- The smallest amount needed for the job
- Twice what you need, in case of spills
Ver respuesta
Respuesta: C. The smallest amount needed for the job
Use the smallest amount necessary and avoid storing large quantities.
Pregunta 23 de 25
You see a container leaking in the storage room. What should you do first?
- Move it to the lunchroom
- Cover it with a cloth and leave it
- Report it to your supervisor right away
- Ignore it if it is a small leak
Ver respuesta
Respuesta: C. Report it to your supervisor right away
Report leaks and spills to your supervisor immediately and follow your workplace spill procedure.
Pregunta 24 de 25
What should you do with an empty aerosol can of a flammable product?
- Burn it in a barrel
- Leave it on a hot surface to dry
- Do not pierce or burn it
- Puncture it to let out the rest of the gas
Ver respuesta
Respuesta: C. Do not pierce or burn it
Do not pierce or burn aerosol containers, even after use. They can still contain flammable product and pressure.
Pregunta 25 de 25
Before using a flammable product indoors, what should you check for?
- The price of the product
- Hidden ignition sources, such as pilot lights
- The colour of the container
- Whether the product smells pleasant
Ver respuesta
Respuesta: B. Hidden ignition sources, such as pilot lights
Check for ignition sources such as pilot lights, sparks and hot surfaces, and use the product only in a well-ventilated area.

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