CRCST CERTIFICATION REVIEW (9TH ED.) EXAM
2026 WITH 100% ACCURATE ANSWERS
1. What are the three essential elements required for a fire to ignite?
Oxygen, carbon, and heat
Fuel, smoke, and oxygen
Fuel, heat, and oxygen
Water, fuel, and heat
2. In a laboratory setting, if a colleague's lab coat catches fire, what
immediate action should you take based on safety protocols?
Yell for help without intervening.
Throw water on them immediately.
Encourage them to stop, drop, and roll.
Run to get a fire extinguisher.
3. What are the four categories indicated by the NFPA hazmat diamond
color coding?
Health, flammability, chemical reactivity, and special hazards.
Flammability, corrosiveness, health, and environmental hazards.
Toxicity, corrosiveness, flammability, and environmental impact.
Health, environmental impact, reactivity, and toxicity.
4. What is the first action you should take if your clothing catches fire?
Wave your arms
Run
,Scream
, Stop
5. Describe the importance of having a safety shower available in
laboratories that handle hazardous materials.
A safety shower is crucial for quickly rinsing off hazardous
chemicals to prevent injury.
A safety shower is only necessary for large chemical spills.
A safety shower is primarily used for cleaning laboratory
equipment.
A safety shower is used to provide hydration to lab personnel.
6. What is a corrosive chemical?
Any chemical that may weaken, burn, or destroy a person's skin
or eyes
Any chemical that smells odorous
Any chemical that contains a hydrogen ion
Any chemical that causes materials to deteriorate
7. Describe the implications of the corrosion symbol for safety in a
laboratory environment.
The corrosion symbol indicates that the material can cause
damage to metals, skin, and eyes, necessitating the use of
protective equipment.
The corrosion symbol means the material is flammable and
should be kept away from heat sources.
The corrosion symbol indicates that the material is non-toxic and
poses no health risks.
The corrosion symbol suggests that the material is safe to handle
without precautions.
2026 WITH 100% ACCURATE ANSWERS
1. What are the three essential elements required for a fire to ignite?
Oxygen, carbon, and heat
Fuel, smoke, and oxygen
Fuel, heat, and oxygen
Water, fuel, and heat
2. In a laboratory setting, if a colleague's lab coat catches fire, what
immediate action should you take based on safety protocols?
Yell for help without intervening.
Throw water on them immediately.
Encourage them to stop, drop, and roll.
Run to get a fire extinguisher.
3. What are the four categories indicated by the NFPA hazmat diamond
color coding?
Health, flammability, chemical reactivity, and special hazards.
Flammability, corrosiveness, health, and environmental hazards.
Toxicity, corrosiveness, flammability, and environmental impact.
Health, environmental impact, reactivity, and toxicity.
4. What is the first action you should take if your clothing catches fire?
Wave your arms
Run
,Scream
, Stop
5. Describe the importance of having a safety shower available in
laboratories that handle hazardous materials.
A safety shower is crucial for quickly rinsing off hazardous
chemicals to prevent injury.
A safety shower is only necessary for large chemical spills.
A safety shower is primarily used for cleaning laboratory
equipment.
A safety shower is used to provide hydration to lab personnel.
6. What is a corrosive chemical?
Any chemical that may weaken, burn, or destroy a person's skin
or eyes
Any chemical that smells odorous
Any chemical that contains a hydrogen ion
Any chemical that causes materials to deteriorate
7. Describe the implications of the corrosion symbol for safety in a
laboratory environment.
The corrosion symbol indicates that the material can cause
damage to metals, skin, and eyes, necessitating the use of
protective equipment.
The corrosion symbol means the material is flammable and
should be kept away from heat sources.
The corrosion symbol indicates that the material is non-toxic and
poses no health risks.
The corrosion symbol suggests that the material is safe to handle
without precautions.
