F02 Hazard Recognition — Questions and Answers
Question 1: Which of the following is considered a Class B fire?
- Wood and paper fire
- Flammable liquid fire (Correct answer)
- Electrical fire
- Cooking oil fire
Correct answer: Flammable liquid fire
Class B fires involve flammable liquids and gases such as gasoline, oil, grease, and solvents. They require smothering or chemical extinguishing agents.
Question 2: What is the primary fire hazard associated with improper storage of combustible materials?
- Noise pollution
- Increased fuel load that can intensify a fire (Correct answer)
- Structural damage
- Air quality reduction
Correct answer: Increased fuel load that can intensify a fire
Improperly stored combustible materials increase the fuel load in a building, meaning fires can grow larger and faster, and may overwhelm sprinkler systems.
Question 3: During a fire watch patrol, which condition would be considered the MOST serious hazard?
- A burned-out light bulb
- An extension cord under a carpet
- A propped-open fire door in a stairwell (Correct answer)
- A recycling bin that is too full
Correct answer: A propped-open fire door in a stairwell
A propped-open fire door compromises the building's passive fire protection by allowing fire and smoke to spread freely between compartments, creating an immediate life-safety hazard.
Question 4: What type of fire extinguisher should NEVER be used on a Class C (electrical) fire?
- CO2 extinguisher
- Dry chemical extinguisher
- Water extinguisher (Correct answer)
- Clean agent extinguisher
Correct answer: Water extinguisher
Water extinguishers should never be used on electrical fires because water conducts electricity, creating a severe shock hazard for the person using the extinguisher.
Question 5: What is a common cause of fires in commercial buildings that an F-02 Fire Guard should watch for?
- Open windows
- Overloaded electrical outlets and daisy-chained power strips (Correct answer)
- Too many employees in one area
- Excessive use of air conditioning
Correct answer: Overloaded electrical outlets and daisy-chained power strips
Overloaded electrical circuits and daisy-chained power strips are a leading cause of electrical fires in commercial buildings due to excessive heat buildup in wiring.
Question 6: What makes a flammable liquid more dangerous than a combustible liquid?
- Flammable liquids are always toxic
- Flammable liquids have a flash point below 100°F, meaning they can ignite at room temperature (Correct answer)
- Flammable liquids are always explosive
- There is no difference between them
Correct answer: Flammable liquids have a flash point below 100°F, meaning they can ignite at room temperature
Flammable liquids have flash points below 100°F (38°C), meaning they can produce ignitable vapors at or below normal room temperatures, making them significantly more dangerous.
F02 Hazard Recognition
Which of the following is considered a Class B fire?