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Quizzes > Quizzes for Business > Human Resources

Fire Extinguisher Safety Knowledge Test

Assess Your Fire Extinguisher Safety Skills

Difficulty: Moderate
Questions: 20
Learning OutcomesStudy Material
Colorful paper art depicting a quiz on Fire Extinguisher Safety Knowledge Test

Sharpen your fire safety skills with this engaging Fire Extinguisher Safety Knowledge Test. Ideal for safety officers, facility managers, or anyone keen on mastering extinguisher techniques, this quiz covers real-world scenarios and best practices. Feel free to compare your results with our Fire Extinguisher Training Quiz or explore deeper insights in the Fire Safety Knowledge Test . The interactive format lets users tweak questions instantly using our editor. Discover all available quizzes and tailor your own fire safety quiz in minutes!

Which class of fire extinguisher is most suitable for a kitchen grease fire?
Class C
Class D
Class A
Class B
Class B extinguishers are designed for flammable liquid fires such as grease or oil. Kitchen grease fires involve combustible liquids, which fall under Class B. Using the proper extinguisher ensures the fire is effectively suppressed.
In the PASS technique for operating a fire extinguisher, what does the "S" stand for?
Squeeze
Seal
Spray
Sweep
The "S" in PASS stands for Squeeze, referring to squeezing the trigger to discharge the extinguishing agent. This step follows Pulling the pin and Aiming at the base of the fire. Performing each step correctly ensures effective fire suppression.
During a routine monthly inspection of a fire extinguisher, which of the following should you check?
Pressure gauge reading
Nearby fire alarm functionality
Approximate date of last training
Evacuation route signage
Checking the pressure gauge ensures the extinguisher is fully charged and ready for use. Other items like signage and training dates are important but not directly part of monthly extinguisher maintenance. Proper gauge readings indicate operability.
What is the first action you should take when using the PASS method?
Squeeze the handle
Sweep side to side
Pull the safety pin
Aim at the base of the fire
The first step in the PASS technique is to Pull the safety pin, which unlocks the extinguisher for operation. Without pulling the pin, the handle cannot be squeezed to release the agent. This step is crucial for readiness.
On a fire extinguisher label, the letter "A" in a numeric rating (e.g., 2A) refers to which type of fire?
Flammable gas fires
Electrical fires
Ordinary combustible fires
Metal fires
The letter "A" denotes ordinary combustible materials such as wood, paper, and cloth. A numeric rating (like 2A) indicates the equivalent firefighting capacity for these materials. Understanding these ratings ensures the right extinguisher is selected.
A fire breaks out in a server room involving energized electrical equipment. Which type of fire extinguisher is most appropriate?
Carbon Dioxide (CO2) extinguisher
Water-based extinguisher
Class A Dry Powder extinguisher
Foam extinguisher
CO2 extinguishers are non-conductive and leave no residue, making them ideal for fires involving energized electrical equipment. Water-based agents conduct electricity and can pose additional hazards. CO2 effectively displaces oxygen to smother the fire.
What can happen if a water-based fire extinguisher is used on a grease fire?
It will completely smother the fire
It will neutralize the grease chemically
It will have no effect
It can spread the fire
Water can cause grease fires to spread by splattering burning oil, increasing the fire's surface area. Specialized agents like Class K or Class B extinguishers are required to safely suppress grease and oil fires. Using water on grease is dangerous.
During an inspection, you find a fire extinguisher with the safety pin missing. What should you do?
Tag it out of service until replaced
Use it regardless of the missing pin
Refill it immediately
Ignore and leave it in place
A missing safety pin renders the extinguisher inoperable or potentially discharges accidentally. It must be tagged out of service and repaired or replaced to ensure functionality. Proper tagging ensures safety and regulatory compliance.
Which class of fire extinguisher should be used on combustible metal fires (e.g., magnesium)?
Class C
Class A
Class D
Class B
Class D extinguishers are specifically designed for combustible metal fires such as magnesium and titanium. They use dry powder agents that isolate the metal from oxygen. Using other extinguishers on metal fires can exacerbate the blaze.
Which of the following is a proper method to check the mechanical condition of a stored-pressure fire extinguisher?
Shake vigorously
Drop it from waist height
Perform a tilt test
Heat it slightly
A tilt test ensures the internal components are loose and the extinguisher is not sealed accidentally. It also verifies that the agent is not caked inside. Other methods can damage the extinguisher or are unsafe.
After discharging more than 10% of its rated capacity, what action is required for a portable fire extinguisher?
Recharge the extinguisher
Replace the pressure gauge only
Tint the cylinder to mark usage
Reinstall it without service
Regulations require recharging extinguishers whenever more than 10% of the agent is used to ensure full capacity for future fires. Partial use can reduce effectiveness during an emergency. Proper service maintains readiness.
Which extinguishing agent is non-conductive and effective for both Class B and C fires?
Foam
Carbon Dioxide (CO2)
Wet chemical
Water mist
CO2 is non-conductive and suppresses Class B flammable liquid fires and Class C electrical fires by displacing oxygen. Foam and wet chemical have conductivity concerns and limited electrical fire capabilities. Water mist reduces conductivity but is less common.
During inspection, a small agent leak is detected at the valve assembly. What is the appropriate action?
Schedule it for immediate service
Ignore until next annual inspection
Bracket it as operational
Attempt to tighten externally
Any leak indicates the extinguisher may not maintain adequate pressure and must be serviced immediately. Delaying repair risks complete discharge or failure in an emergency. Proper maintenance ensures reliability.
What information on the extinguisher label indicates its firefighting capacity?
Manufacture date
Inspection tag color
UL rating
Serial number
The UL rating (e.g., 2A:10B:C) represents the extinguishing capacity against different fire classes. This rating guides users to select the right extinguisher for the hazard. Other details are important but do not define capacity.
In a laboratory, a small spill of flammable solvent ignites. Which extinguisher should be used first?
Class D powder extinguisher
Class A water extinguisher
Wet chemical extinguisher
Class B foam extinguisher
Class B foam extinguishers are effective on flammable liquid fires such as solvent spills by creating a foam blanket and suppressing vapors. Water-based and Class D agents are inappropriate for liquid fires. Foam provides rapid control.
A fire involves high-voltage transformer oil that is both flammable and energized. Which extinguisher is most suitable?
Dry chemical extinguisher
Foam extinguisher
Water mist extinguisher
Carbon Dioxide (CO2) extinguisher
CO2 extinguishers are non-conductive and leave no residue, making them ideal for energized equipment fires involving transformer oil. Dry chemical can interrupt circuitry and foam is conductive. CO2 safely displaces oxygen.
Which maintenance procedure requires a certified technician rather than routine monthly inspection?
Checking safety pin and tamper seal
Visual inspection of hose and nozzle
Verifying inspection tag dates
Hydrostatic pressure testing
Hydrostatic testing involves pressurizing the cylinder to check for metal fatigue and requires specialized equipment and certification. Routine inspections do not involve pressurization. Ensuring cylinder integrity is critical.
An extinguisher is rated 3A:40B:C. What does the "40B" rating indicate?
It covers 40 square feet of flammable liquid fire
It can fight 40 ft of paper fire
It lasts 40 seconds
It has 40 pounds of agent
The "40B" rating signifies the extinguisher's effectiveness on flammable liquid fires equivalent to protecting 40 square feet of surface area. This helps in choosing the proper size for specific liquid fire hazards.
A facility has both deep-fat fryers and standard office paper hazards. Which extinguisher strategy is best?
Rely solely on CO2 extinguishers
Install Class K only extinguishers
Use multi-purpose dry chemical exclusively
Provide both wet chemical (Class K) and water mist extinguishers
Wet chemical extinguishers are designed for kitchen grease fires (Class K) while water mist safely tackles Class A office paper fires. A combined strategy ensures both hazards are covered effectively by using the appropriate agent.
According to industry standards, how often must steel fire extinguisher cylinders undergo hydrostatic testing?
Every 6 months
Every 12 years
Every 24 years
Every 5 years
Steel cylinders typically require hydrostatic testing every 12 years to validate structural integrity and safety under pressure. This interval helps detect corrosion or fatigue. Aluminum cylinders have different intervals.
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Learning Outcomes

  1. Identify the main classes of fire extinguishers and their uses.
  2. Demonstrate the correct PASS (Pull, Aim, Squeeze, Sweep) technique.
  3. Apply safety protocols for selecting and operating extinguishers.
  4. Evaluate potential hazards and appropriate response scenarios.
  5. Master routine maintenance checks and inspection procedures.
  6. Analyze emergency situations to choose the right extinguisher.

Cheat Sheet

  1. Understand the PASS Technique - Mastering PASS (Pull, Aim, Squeeze, Sweep) turns panic into power by giving you clear steps to tackle small fires safely. It's like learning a fire-fighting dance - simple moves lead to big results! Learn the PASS Fire Extinguisher Method
  2. Identify Fire Extinguisher Classes - Fire extinguishers are sorted into five main classes (A, B, C, D, K), each designed to tackle different fuel types from paper and wood to cooking oils and electrical equipment. Recognizing these classes helps you pick the hero you need in a blaze battle. OSHA Fire Extinguisher Classes
  3. Select the Right Extinguisher for the Fire Type - Using a Class K extinguisher on a kitchen grease fire or a Class C on an electrical spark fire makes all the difference between victory and defeat. Matching extinguisher to fuel keeps you and your space safe. State Systems PASS Technique Blog
  4. Perform Regular Maintenance Checks - A trusty extinguisher needs monthly TLC: inspect for dents, ensure the pressure gauge is in the green, and confirm the safety pin is intact. Consistent check-ups mean you'll never face a faulty extinguisher in an emergency. Wikipedia: Fire Extinguisher
  5. Understand Fire Extinguisher Limitations - Extinguishers are your first line of defense for small, contained fires - not towering infernos. If the blaze grows or smoke engulfs the room, it's time to hit the exit and call for backup. Fire Extinguisher Limitations Guide
  6. Learn the Hazards of Incorrect Extinguisher Use - A water extinguisher on an electrical fire is like adding fuel to the problem - electrocution risk skyrockets! Always pair the correct agent with the fire class to avoid turning a firefight into a shock show. Ward Training PASS Method
  7. Practice Safe Distance and Positioning - Stand about 6 - 8 feet from the flames with your back to an escape route. This guard-your-six strategy lets you battle the blaze confidently while keeping a clear path for a hasty retreat if needed. PASS Technique Refresher
  8. Recognize When to Evacuate - If flames flare up uncontrollably or smoke thickens, evacuate immediately and alert emergency services. Knowing when to walk away is just as important as knowing how to fight a fire. Emergency Evacuation Tips
  9. Understand the Importance of Training - Hands-on practice turns theory into instinct, boosting your confidence when it matters most. Join a live training session to get comfortable with different extinguisher types and real-world scenarios. Hands-on PASS Training
  10. Know the Environmental Impact of Extinguishing Agents - Some agents leave messy residues or can harm sensitive electronics, while CO₂ leaves no trace and is perfect for server rooms. Choose eco-friendly options when possible to protect both people and the planet. Safety Notes Fire Extinguisher Guide
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