Fe – Certified Portable Fire Extinguisher Technician Exam
Practice Questions and Answers with Detailed Rationales
Question 1: According to NFPA 10, what is the maximum travel distance for Class A fire extinguishers?
A. 50 feet
B. 75 feet
C. 100 feet
D. 150 feet
CORRECT ANSWER: B. 75 feet
Rationale: NFPA 10 specifies that the maximum travel distance for Class A fire extinguishers shall not
exceed 75 feet to ensure rapid accessibility in the event of an ordinary combustible fire.
Question 2: Which class of fire involves flammable liquids, gases, and greases?
A. Class A
B. Class B
C. Class C
D. Class D
CORRECT ANSWER: B. Class B
Rationale: Class B fires involve flammable or combustible liquids, flammable gases, petroleum greases,
tars, oils, paint thinners, and solvents.
Question 3: What color is typically associated with the geometric icon for a Class C fire extinguisher?
A. Red
B. Blue
C. Green
D. Yellow
CORRECT ANSWER: C. Green
Rationale: Class C fire extinguishers, rated for energized electrical equipment, are designated by a green
circle containing the letter C.
,Question 4: How often must stored-pressure dry chemical extinguishers be subjected to a 12-year
hydrostatic test?
A. Every 5 years
B. Every 6 years
C. Every 12 years
D. Every 20 years
CORRECT ANSWER: C. Every 12 years
Rationale: Stored-pressure dry chemical extinguishers utilizing a mild steel shell must be hydrostatically
tested every 12 years from the date of manufacture.
Question 5: What is the primary extinguishing agent in a Class K fire extinguisher?
A. Water mist
B. Potassium acetate-based solution
C. Monoammonium phosphate
D. Carbon dioxide
CORRECT ANSWER: B. Potassium acetate-based solution
Rationale: Class K extinguishers use wet chemical agents, typically potassium acetate, potassium citrate,
or potassium carbonate, designed for commercial cooking oil and fat fires.
Question 6: When conducting an annual maintenance check, what must a technician install on the
extinguisher after service?
A. A new pressure gauge
B. A verification collar
C. A discharge hose
D. A tamper seal only
CORRECT ANSWER: B. A verification collar
Rationale: NFPA 10 requires a verification collar to be placed around the neck of the extinguisher
whenever maintenance is performed that involves internal examination or recharging.
Question 7: Which type of fire extinguisher leaves no residue and is ideal for protecting sensitive
electronic equipment?
,A. Water-type
B. Dry chemical
C. Carbon dioxide (CO2)
D. Wet chemical
CORRECT ANSWER: C. Carbon dioxide (CO2)
Rationale: Carbon dioxide extinguishers discharge a clean, non-conductive gas that evaporates
completely, leaving no residue, making them safe for sensitive electronics.
Question 8: What is the maximum allowable weight for portable fire extinguishers with a gross weight
exceeding 40 pounds when mounted on a wall?
A. The top of the extinguisher must be no more than 3.5 feet above the floor
B. The top of the extinguisher must be no more than 5 feet above the floor
C. The bottom of the extinguisher must be at least 4 inches off the floor
D. The extinguisher must rest on the floor
CORRECT ANSWER: A. The top of the extinguisher must be no more than 3.5 feet above the floor
Rationale: For extinguishers with a gross weight greater than 40 pounds, the top of the extinguisher must
be installed not more than 3.5 feet above the floor for ergonomic accessibility.
Question 9: How frequently must portable fire extinguishers undergo a quick visual inspection?
A. Monthly
B. Annually
C. Every 6 years
D. Every 12 years
CORRECT ANSWER: A. Monthly
Rationale: NFPA 10 mandates that fire extinguishers be inspected manually or via electronic monitoring
at least once a month to ensure they are in their designated place and operational.
Question 10: Which of the following extinguishing agents is suitable for combustible metal fires (Class D)?
A. Water
B. Sodium chloride-based dry powder
C. Foam
, D. Halon replacement agents
CORRECT ANSWER: B. Sodium chloride-based dry powder
Rationale: Class D fires involving combustible metals (like magnesium, titanium, or sodium) require
specialized dry powder agents such as sodium chloride or copper-based powders that do not react
violently with the burning metal.
Question 11: What is the maximum travel distance for Class B fire extinguishers?
A. 30 feet
B. 50 feet
C. 75 feet
D. 100 feet
CORRECT ANSWER: B. 50 feet
Rationale: NFPA 10 mandates that travel distance for Class B hazards shall not exceed 50 feet due to the
rapid-spreading nature of flammable liquid fires.
Question 12: What does the numerical rating preceding a Class A rating on an extinguisher label
indicate?
A. The amount of water equivalent in gallons
B. The extinguishing potential and amount of fire it can extinguish
C. The weight of the agent in pounds
D. The maximum discharge time in seconds
CORRECT ANSWER: B. The extinguishing potential and amount of fire it can extinguish
Rationale: The numerical rating on a Class A extinguisher is an indicator of its fire-extinguishing potential,
determined by standardized laboratory tests.
Question 13: Which type of extinguisher must be emptied and subjected to internal examination every 6
years?
A. Carbon dioxide
B. Stored-pressure dry chemical
C. Water pump tanks
D. Wet chemical
Practice Questions and Answers with Detailed Rationales
Question 1: According to NFPA 10, what is the maximum travel distance for Class A fire extinguishers?
A. 50 feet
B. 75 feet
C. 100 feet
D. 150 feet
CORRECT ANSWER: B. 75 feet
Rationale: NFPA 10 specifies that the maximum travel distance for Class A fire extinguishers shall not
exceed 75 feet to ensure rapid accessibility in the event of an ordinary combustible fire.
Question 2: Which class of fire involves flammable liquids, gases, and greases?
A. Class A
B. Class B
C. Class C
D. Class D
CORRECT ANSWER: B. Class B
Rationale: Class B fires involve flammable or combustible liquids, flammable gases, petroleum greases,
tars, oils, paint thinners, and solvents.
Question 3: What color is typically associated with the geometric icon for a Class C fire extinguisher?
A. Red
B. Blue
C. Green
D. Yellow
CORRECT ANSWER: C. Green
Rationale: Class C fire extinguishers, rated for energized electrical equipment, are designated by a green
circle containing the letter C.
,Question 4: How often must stored-pressure dry chemical extinguishers be subjected to a 12-year
hydrostatic test?
A. Every 5 years
B. Every 6 years
C. Every 12 years
D. Every 20 years
CORRECT ANSWER: C. Every 12 years
Rationale: Stored-pressure dry chemical extinguishers utilizing a mild steel shell must be hydrostatically
tested every 12 years from the date of manufacture.
Question 5: What is the primary extinguishing agent in a Class K fire extinguisher?
A. Water mist
B. Potassium acetate-based solution
C. Monoammonium phosphate
D. Carbon dioxide
CORRECT ANSWER: B. Potassium acetate-based solution
Rationale: Class K extinguishers use wet chemical agents, typically potassium acetate, potassium citrate,
or potassium carbonate, designed for commercial cooking oil and fat fires.
Question 6: When conducting an annual maintenance check, what must a technician install on the
extinguisher after service?
A. A new pressure gauge
B. A verification collar
C. A discharge hose
D. A tamper seal only
CORRECT ANSWER: B. A verification collar
Rationale: NFPA 10 requires a verification collar to be placed around the neck of the extinguisher
whenever maintenance is performed that involves internal examination or recharging.
Question 7: Which type of fire extinguisher leaves no residue and is ideal for protecting sensitive
electronic equipment?
,A. Water-type
B. Dry chemical
C. Carbon dioxide (CO2)
D. Wet chemical
CORRECT ANSWER: C. Carbon dioxide (CO2)
Rationale: Carbon dioxide extinguishers discharge a clean, non-conductive gas that evaporates
completely, leaving no residue, making them safe for sensitive electronics.
Question 8: What is the maximum allowable weight for portable fire extinguishers with a gross weight
exceeding 40 pounds when mounted on a wall?
A. The top of the extinguisher must be no more than 3.5 feet above the floor
B. The top of the extinguisher must be no more than 5 feet above the floor
C. The bottom of the extinguisher must be at least 4 inches off the floor
D. The extinguisher must rest on the floor
CORRECT ANSWER: A. The top of the extinguisher must be no more than 3.5 feet above the floor
Rationale: For extinguishers with a gross weight greater than 40 pounds, the top of the extinguisher must
be installed not more than 3.5 feet above the floor for ergonomic accessibility.
Question 9: How frequently must portable fire extinguishers undergo a quick visual inspection?
A. Monthly
B. Annually
C. Every 6 years
D. Every 12 years
CORRECT ANSWER: A. Monthly
Rationale: NFPA 10 mandates that fire extinguishers be inspected manually or via electronic monitoring
at least once a month to ensure they are in their designated place and operational.
Question 10: Which of the following extinguishing agents is suitable for combustible metal fires (Class D)?
A. Water
B. Sodium chloride-based dry powder
C. Foam
, D. Halon replacement agents
CORRECT ANSWER: B. Sodium chloride-based dry powder
Rationale: Class D fires involving combustible metals (like magnesium, titanium, or sodium) require
specialized dry powder agents such as sodium chloride or copper-based powders that do not react
violently with the burning metal.
Question 11: What is the maximum travel distance for Class B fire extinguishers?
A. 30 feet
B. 50 feet
C. 75 feet
D. 100 feet
CORRECT ANSWER: B. 50 feet
Rationale: NFPA 10 mandates that travel distance for Class B hazards shall not exceed 50 feet due to the
rapid-spreading nature of flammable liquid fires.
Question 12: What does the numerical rating preceding a Class A rating on an extinguisher label
indicate?
A. The amount of water equivalent in gallons
B. The extinguishing potential and amount of fire it can extinguish
C. The weight of the agent in pounds
D. The maximum discharge time in seconds
CORRECT ANSWER: B. The extinguishing potential and amount of fire it can extinguish
Rationale: The numerical rating on a Class A extinguisher is an indicator of its fire-extinguishing potential,
determined by standardized laboratory tests.
Question 13: Which type of extinguisher must be emptied and subjected to internal examination every 6
years?
A. Carbon dioxide
B. Stored-pressure dry chemical
C. Water pump tanks
D. Wet chemical
