EHS101: WHMIS and Lab Safety
Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
What does WHMIS stand for?
✔✔ Workplace Hazardous Materials Information System
What is the main purpose of WHMIS?
✔✔ To ensure safe use, handling, and storage of hazardous products
Who is responsible for following WHMIS rules in the workplace?
✔✔ Both employers and workers
What document provides detailed information about hazardous products?
✔✔ Safety Data Sheet (SDS)
How many sections are there in a standard SDS?
✔✔ 16 sections
What does an SDS help workers understand?
✔✔ Hazards, safe handling, and emergency measures
What symbol represents acute toxicity in WHMIS?
1
,✔✔ Skull and crossbones
What WHMIS pictogram indicates flammable materials?
✔✔ Flame symbol
What does the corrosion pictogram warn about?
✔✔ Skin burns, eye damage, and metal corrosion
What type of hazard affects health over time?
✔✔ Chronic health hazard
What does the exclamation mark pictogram indicate?
✔✔ Less severe health effects or irritation
What is the purpose of lab safety training?
✔✔ To reduce accidents and injuries in the laboratory
Why is eating prohibited in laboratories?
✔✔ To prevent contamination and chemical ingestion
What PPE protects the eyes in a laboratory?
✔✔ Safety goggles
2
,What PPE should be worn when handling chemicals?
✔✔ Chemical-resistant gloves
Why are lab coats worn?
✔✔ To protect skin and clothing from spills
What should you do before starting a lab experiment?
✔✔ Read and understand the procedure and hazards
What is the safest way to smell a chemical?
✔✔ Waft the vapour toward the nose
Why should chemicals never be tasted?
✔✔ They may be toxic or harmful
What should you do if a chemical spills on your skin?
✔✔ Rinse immediately with plenty of water
What is an emergency eyewash station used for?
✔✔ Flushing chemicals from the eyes
3
, How long should eyes be rinsed after chemical exposure?
✔✔ At least 15 minutes
Why should broken glass not be picked up by hand?
✔✔ It can cause cuts and injuries
Where should broken glass be disposed of?
✔✔ In a designated glass disposal container
What is the function of a fume hood?
✔✔ To remove hazardous vapours and fumes
Why should long hair be tied back in the lab?
✔✔ To prevent contact with chemicals or flames
What should you do if you do not understand a lab instruction?
✔✔ Ask the instructor or supervisor
Why must chemicals be properly labelled?
✔✔ To identify hazards and safe handling information
What information must appear on a WHMIS label?
4
Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
What does WHMIS stand for?
✔✔ Workplace Hazardous Materials Information System
What is the main purpose of WHMIS?
✔✔ To ensure safe use, handling, and storage of hazardous products
Who is responsible for following WHMIS rules in the workplace?
✔✔ Both employers and workers
What document provides detailed information about hazardous products?
✔✔ Safety Data Sheet (SDS)
How many sections are there in a standard SDS?
✔✔ 16 sections
What does an SDS help workers understand?
✔✔ Hazards, safe handling, and emergency measures
What symbol represents acute toxicity in WHMIS?
1
,✔✔ Skull and crossbones
What WHMIS pictogram indicates flammable materials?
✔✔ Flame symbol
What does the corrosion pictogram warn about?
✔✔ Skin burns, eye damage, and metal corrosion
What type of hazard affects health over time?
✔✔ Chronic health hazard
What does the exclamation mark pictogram indicate?
✔✔ Less severe health effects or irritation
What is the purpose of lab safety training?
✔✔ To reduce accidents and injuries in the laboratory
Why is eating prohibited in laboratories?
✔✔ To prevent contamination and chemical ingestion
What PPE protects the eyes in a laboratory?
✔✔ Safety goggles
2
,What PPE should be worn when handling chemicals?
✔✔ Chemical-resistant gloves
Why are lab coats worn?
✔✔ To protect skin and clothing from spills
What should you do before starting a lab experiment?
✔✔ Read and understand the procedure and hazards
What is the safest way to smell a chemical?
✔✔ Waft the vapour toward the nose
Why should chemicals never be tasted?
✔✔ They may be toxic or harmful
What should you do if a chemical spills on your skin?
✔✔ Rinse immediately with plenty of water
What is an emergency eyewash station used for?
✔✔ Flushing chemicals from the eyes
3
, How long should eyes be rinsed after chemical exposure?
✔✔ At least 15 minutes
Why should broken glass not be picked up by hand?
✔✔ It can cause cuts and injuries
Where should broken glass be disposed of?
✔✔ In a designated glass disposal container
What is the function of a fume hood?
✔✔ To remove hazardous vapours and fumes
Why should long hair be tied back in the lab?
✔✔ To prevent contact with chemicals or flames
What should you do if you do not understand a lab instruction?
✔✔ Ask the instructor or supervisor
Why must chemicals be properly labelled?
✔✔ To identify hazards and safe handling information
What information must appear on a WHMIS label?
4
