WHMIS Exam Questions and Answers with Verified Solutions |
Latest 2026 Update
Q: What does the exploding bomb symbol indicate?
Answer:
Explosions or reactive materials. It is placed on materials that are self reactive and
could explode.
Q: What should you do if a substance that has an exploding bomb on it leaks?
Answer:
report the explosion to everyone around you, don't fight the fire, have spill control
materials ready (like a PPE kit and non-sparking tools)
Q: Where should one store/keep substances with exploding bomb symbols?
Answer:
Since these substances are temperature sensitive, store them away from heat, hot
surface areas, and sunlight. Store them in a cool place.
Q: Why are compressed gases more dangerous than normal gases?
Answer:
because compressed gases can be toxic, flammable, and corrosive.
Q: What is a safe way to handle a compressed gas?
Answer:
inspect the cylinder to check for damage, secure cylinders so they do not get
knocked over, leave the cylinder cap in place, and make sure you understand how
to use the cylinder before using it
Q: What are some examples of a biohazard?
Answer:
blood, viruses, bacteria, fungi, molds, parasites, medical waste, sharps waste
Q: What is a biohazard?
Answer:
a biological substance that is a threat to the health of living organisms (effects can
be food poisoning, infections, tetnus)
, Q: How can you protect yourself from biohazards?
Answer:
vaccinations, washing hands, calling professional help for more severe cases
Q: What can happen if a gas that is under pressure is heated?
Answer:
it could cause a fire and explosion
Q: How do flammable materials catch on fire?
Answer:
they produce vapours and friction which heats up and causes it to ignite
Q: What do you do if you come in contact with a poisonous chemical?
Answer:
If in contact with skin, thoroughly wash with soap and water.
If swallowed, seek immediate medical attention. If inhaled, immediately move to
fresh air.
Q: How can health-hazard labeled products be stored properly?
Answer:
keep products cool and dry, in a well ventilated area, and keep away from direct
sunlight
Q: What can you do to avoid exposure to products with the health hazard
symbol?
Answer:
use proper PPE (Personal Protective Equipment) such as gloves, goggles, and
masks
Q: What should you do if you come in contact with a substance that is labeled
with as a health hazard?
Answer:
immediately wash eyes and shower, immediately report leaks to medical staff, ask
for help
Q: What are some side effects of coming in contact with a health hazard?
Latest 2026 Update
Q: What does the exploding bomb symbol indicate?
Answer:
Explosions or reactive materials. It is placed on materials that are self reactive and
could explode.
Q: What should you do if a substance that has an exploding bomb on it leaks?
Answer:
report the explosion to everyone around you, don't fight the fire, have spill control
materials ready (like a PPE kit and non-sparking tools)
Q: Where should one store/keep substances with exploding bomb symbols?
Answer:
Since these substances are temperature sensitive, store them away from heat, hot
surface areas, and sunlight. Store them in a cool place.
Q: Why are compressed gases more dangerous than normal gases?
Answer:
because compressed gases can be toxic, flammable, and corrosive.
Q: What is a safe way to handle a compressed gas?
Answer:
inspect the cylinder to check for damage, secure cylinders so they do not get
knocked over, leave the cylinder cap in place, and make sure you understand how
to use the cylinder before using it
Q: What are some examples of a biohazard?
Answer:
blood, viruses, bacteria, fungi, molds, parasites, medical waste, sharps waste
Q: What is a biohazard?
Answer:
a biological substance that is a threat to the health of living organisms (effects can
be food poisoning, infections, tetnus)
, Q: How can you protect yourself from biohazards?
Answer:
vaccinations, washing hands, calling professional help for more severe cases
Q: What can happen if a gas that is under pressure is heated?
Answer:
it could cause a fire and explosion
Q: How do flammable materials catch on fire?
Answer:
they produce vapours and friction which heats up and causes it to ignite
Q: What do you do if you come in contact with a poisonous chemical?
Answer:
If in contact with skin, thoroughly wash with soap and water.
If swallowed, seek immediate medical attention. If inhaled, immediately move to
fresh air.
Q: How can health-hazard labeled products be stored properly?
Answer:
keep products cool and dry, in a well ventilated area, and keep away from direct
sunlight
Q: What can you do to avoid exposure to products with the health hazard
symbol?
Answer:
use proper PPE (Personal Protective Equipment) such as gloves, goggles, and
masks
Q: What should you do if you come in contact with a substance that is labeled
with as a health hazard?
Answer:
immediately wash eyes and shower, immediately report leaks to medical staff, ask
for help
Q: What are some side effects of coming in contact with a health hazard?
