Page 1 of 141
(OSFMFEI21) Fire Extinguisher 1-3 Practice
Exam Questions & Answers VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
(OSFMFEI21) Fire Extinguisher 1-3 Practice Exam
Based on the available search results and the California Office of the State Fire Marshal (OSFM)
certification standards, this practice exam covers the core domains of the OSFMFEI21 Fire
Extinguisher 1-3 Exam. The exam assesses technical competency in servicing, maintaining, and
ensuring compliance of portable fire extinguishers with NFPA 10, OSHA, and California Title 19
regulations.
QUESTIONS 1-50
1. What is the primary function of a fire extinguisher?
A) To suppress smoke
B) To control a small fire until help arrives
C) To ventilate the area
D) To alert the fire department
Answer: B) Fire extinguishers are designed to control or extinguish small fires, allowing time for
evacuation and calling for help .
2. Which fire class involves ordinary combustibles such as wood, paper, and cloth?
,Page 2 of 141
A) Class A
B) Class B
C) Class C
D) Class K
Answer: A) Class A fires involve ordinary solid combustibles including wood, paper, cloth,
rubber, and many plastics .
3. According to the fire tetrahedron, which element is NOT required for fire to occur?
A) Fuel
B) Oxygen
C) Carbon Dioxide
D) Heat
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Answer: C) The fire tetrahedron consists of four components: fuel, heat, oxygen, and a self-
sustaining chemical chain reaction. Carbon dioxide is an extinguishing agent, not a fire
component .
4. What does the "C" in a Class C fire indicate?
A) Chemical fire
B) Combustible metals
C) Electrical equipment
D) Cooking oils
Answer: C) Class C fires involve energized electrical equipment and require non-conductive
extinguishing agents .
5. The PASS method stands for Pull, Aim, Squeeze, and ______?
, Page 4 of 141
A) Slide
B) Sweep
C) Spread
D) Stand
Answer: B) PASS is the standard operating procedure: Pull the pin, Aim at the base of the fire,
Squeeze the handle, and Sweep from side to side .
6. Which type of extinguisher uses carbon dioxide as its extinguishing agent?
A) Dry chemical
B) Carbon dioxide
C) Wet chemical
D) Foam
Answer: B) Carbon dioxide extinguishers expel CO₂ to displace oxygen and smother the fire .
(OSFMFEI21) Fire Extinguisher 1-3 Practice
Exam Questions & Answers VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
(OSFMFEI21) Fire Extinguisher 1-3 Practice Exam
Based on the available search results and the California Office of the State Fire Marshal (OSFM)
certification standards, this practice exam covers the core domains of the OSFMFEI21 Fire
Extinguisher 1-3 Exam. The exam assesses technical competency in servicing, maintaining, and
ensuring compliance of portable fire extinguishers with NFPA 10, OSHA, and California Title 19
regulations.
QUESTIONS 1-50
1. What is the primary function of a fire extinguisher?
A) To suppress smoke
B) To control a small fire until help arrives
C) To ventilate the area
D) To alert the fire department
Answer: B) Fire extinguishers are designed to control or extinguish small fires, allowing time for
evacuation and calling for help .
2. Which fire class involves ordinary combustibles such as wood, paper, and cloth?
,Page 2 of 141
A) Class A
B) Class B
C) Class C
D) Class K
Answer: A) Class A fires involve ordinary solid combustibles including wood, paper, cloth,
rubber, and many plastics .
3. According to the fire tetrahedron, which element is NOT required for fire to occur?
A) Fuel
B) Oxygen
C) Carbon Dioxide
D) Heat
,Page 3 of 141
Answer: C) The fire tetrahedron consists of four components: fuel, heat, oxygen, and a self-
sustaining chemical chain reaction. Carbon dioxide is an extinguishing agent, not a fire
component .
4. What does the "C" in a Class C fire indicate?
A) Chemical fire
B) Combustible metals
C) Electrical equipment
D) Cooking oils
Answer: C) Class C fires involve energized electrical equipment and require non-conductive
extinguishing agents .
5. The PASS method stands for Pull, Aim, Squeeze, and ______?
, Page 4 of 141
A) Slide
B) Sweep
C) Spread
D) Stand
Answer: B) PASS is the standard operating procedure: Pull the pin, Aim at the base of the fire,
Squeeze the handle, and Sweep from side to side .
6. Which type of extinguisher uses carbon dioxide as its extinguishing agent?
A) Dry chemical
B) Carbon dioxide
C) Wet chemical
D) Foam
Answer: B) Carbon dioxide extinguishers expel CO₂ to displace oxygen and smother the fire .
