WHMIS - Workplace Hazardous Materials Information System Safe Handling and Exposure Questions and Answers

Question 1

When implementing safety measures for a hazardous product, which of the following represents the most effective type of control according to the hierarchy of controls?

Accepted Answer

Eliminating the hazardous product or substituting it with a less hazardous one.

Answer

Personal Protective Equipment (PPE) such as gloves and goggles.

Answer

Administrative controls, such as safe work procedures and signage.

Answer

Engineering controls, such as installing a ventilation system.

Question 2

A worker is required to handle a chemical whose Safety Data Sheet (SDS) specifies the use of nitrile gloves. The only gloves available are standard leather work gloves. What is the appropriate course of action?

Accepted Answer

Inform their supervisor that the specified PPE is unavailable and do not proceed with the task.

Answer

Wear two pairs of the leather gloves to provide extra protection.

Answer

Proceed with the task but try to work quickly to minimize contact.

Answer

Apply a barrier cream to their hands before putting on the leather gloves.

Question 3

An employee accidentally splashes a hazardous liquid, which they know is corrosive, onto their arm. What is the most critical and immediate action they should take?

Accepted Answer

Proceed to an emergency shower or flushing station and rinse the affected area with large amounts of water.

Answer

Immediately locate the product's SDS to read the first-aid section.

Answer

Report the incident to their supervisor before doing anything else.

Answer

Cover the affected area with a dry, sterile bandage.

Question 4

Which of the following is the best example of an engineering control used to minimize exposure to airborne contaminants from a hazardous product?

Accepted Answer

A local exhaust ventilation system, such as a fume hood.

Answer

Requiring workers to wear approved respirators.

Answer

Scheduling shorter work shifts in the area where the product is used.

Answer

Placing warning signs in the area to indicate an inhalation hazard.

Question 5

A worker must store a container of a flammable liquid and a container of a strong oxidizing agent. According to general safe handling principles under WHMIS, what should the worker do?

Accepted Answer

Store them in separate, designated areas or in a cabinet that provides segregation for incompatible materials.

Answer

Store them side-by-side on the same shelf for easy inventory management.

Answer

Place the flammable liquid on a lower shelf than the oxidizer in the same cabinet.

Answer

Ensure both containers are tightly sealed and store them together in a general-purpose cabinet.

Question 6

Which of the following is a primary example of an administrative control for managing exposure to hazardous products?

Accepted Answer

Developing and enforcing written safe work procedures.

Answer

Installing a splash guard on a piece of equipment.

Answer

Providing workers with chemical-resistant aprons.

Answer

Replacing a toxic solvent with a water-based cleaner.