TFM02 - TEXAS FIRE EXTINGUISHER LICENSING TEST TYPE B 2025-2026
QUESTIONS AND 100% CORRECT ANSWERS
Key References: NFPA 10, 29 CFR 1910.157 (OSHA), Texas Administrative Code
Title 28 .
🔥 Core Concepts & Fire Science
1. A three-dimensional fire often involves static flammable liquid.
A) True
B) False
Answer: B) False
Rationale: 3D fires involve flammable liquid in motion, as well as both horizontal
and vertical surfaces (running liquid fires) .
2. Class A fire extinguishers are designed for which materials?
A) Energized electrical equipment
,B) Flammable liquids and gases
C) Wood, paper, plastics, and textiles
D) Cooking oils and greases
Answer: C) Wood, paper, plastics, and textiles
Rationale: Class A extinguishers use the heat-absorbing effects of water or the
coating effects of dry chemicals for ordinary combustibles .
3. Which UL rating indicates the square footage a Class B extinguisher covers?
A) A:B
B) B:C
C) C:A
,D) K:B
Answer: B) B:C
Rationale: The "B:C" rating on an extinguisher label refers to the approximate
square footage of fire the extinguisher can cover, though it also relates to
operator skill .
4. Class C fire extinguishers must use agents that are:
A) Water-based
B) Foam-based
C) Electrically nonconductive
D) High-pressure only
Answer: C) Electrically nonconductive
, Rationale: Class C fires involve energized electrical equipment; using a conductive
agent puts the operator at risk of shock .
5. Class K extinguishers work on the principle of:
A) Cooling
B) Saponification
C) Oxygen dilution
D) Chemical flame inhibition
Answer: B) Saponification
Rationale: Class K extinguishers use a wet chemical agent that reacts with cooking
oils/fats to create a foam layer (saponification), preventing reflash .
⚙️ Inspection, Maintenance & Testing (NFPA 10)
QUESTIONS AND 100% CORRECT ANSWERS
Key References: NFPA 10, 29 CFR 1910.157 (OSHA), Texas Administrative Code
Title 28 .
🔥 Core Concepts & Fire Science
1. A three-dimensional fire often involves static flammable liquid.
A) True
B) False
Answer: B) False
Rationale: 3D fires involve flammable liquid in motion, as well as both horizontal
and vertical surfaces (running liquid fires) .
2. Class A fire extinguishers are designed for which materials?
A) Energized electrical equipment
,B) Flammable liquids and gases
C) Wood, paper, plastics, and textiles
D) Cooking oils and greases
Answer: C) Wood, paper, plastics, and textiles
Rationale: Class A extinguishers use the heat-absorbing effects of water or the
coating effects of dry chemicals for ordinary combustibles .
3. Which UL rating indicates the square footage a Class B extinguisher covers?
A) A:B
B) B:C
C) C:A
,D) K:B
Answer: B) B:C
Rationale: The "B:C" rating on an extinguisher label refers to the approximate
square footage of fire the extinguisher can cover, though it also relates to
operator skill .
4. Class C fire extinguishers must use agents that are:
A) Water-based
B) Foam-based
C) Electrically nonconductive
D) High-pressure only
Answer: C) Electrically nonconductive
, Rationale: Class C fires involve energized electrical equipment; using a conductive
agent puts the operator at risk of shock .
5. Class K extinguishers work on the principle of:
A) Cooling
B) Saponification
C) Oxygen dilution
D) Chemical flame inhibition
Answer: B) Saponification
Rationale: Class K extinguishers use a wet chemical agent that reacts with cooking
oils/fats to create a foam layer (saponification), preventing reflash .
⚙️ Inspection, Maintenance & Testing (NFPA 10)
