Fe – Certified Portable Fire Extinguisher
Technician Newest Main Exam Practice Up to
Date 2025/2026 Latest Exam Questions And
Answers Complete Study Guide Exam Prep
Practice Test.
Fire Classes & Extinguisher Selection
Q1. A portable fire extinguisher is selected for a fire involving energized electrical
equipment. Which classification is most appropriate?
A) Class A
B) Class B
C) Class C
D) Class D
Correct Answer: C
Class C extinguishers are intended for fires involving energized electrical equipment. The
classification addresses the electrical hazard rather than the fuel itself .
Q2. A technician encounters a fire involving ordinary combustible materials such
as wood, paper, and cloth. Which fire classification applies?
A) Class A
B) Class B
C) Class C
D) Class K
,Correct Answer: A
Class A fires involve ordinary combustible materials. Class B involves flammable liquids,
Class C involves energized electrical equipment, and Class K involves cooking oils and fats
.
Q3. Which extinguishing agent is commonly associated with Class K fires?
A) Water
B) Wet chemical
C) Carbon dioxide only
D) Dry sand
Correct Answer: B
Wet-chemical extinguishers are specifically designed for fires involving cooking oils and
fats, particularly in commercial cooking applications. The agent saponifies the oils,
creating a foam that seals off oxygen .
Q4. Which extinguisher is generally inappropriate for an energized electrical fire
because of its conductivity?
A) CO₂
B) Clean agent
C) Water
D) Dry chemical
Correct Answer: C
Water can conduct electricity and may expose the operator to electrical shock when used
improperly on energized electrical equipment .
Q5. Which classification would be most appropriate for a grease fire in a kitchen?
,A) Class A
B) Class B
C) Class K
D) Class D
Correct Answer: C
Class K fires involve cooking oils and fats common to kitchen environments. Wet-chemical
agents are specifically designed for this hazard .
Inspection & Maintenance
Q6. Before servicing a stored-pressure dry chemical extinguisher, what is the
technician's most important initial consideration?
A) Remove the discharge hose
B) Verify that the extinguisher is depressurized
C) Remove the safety pin
D) Operate the handle repeatedly
Correct Answer: B
An extinguisher must be safely depressurized before disassembly. Removing components
from a pressurized cylinder can create a serious hazard .
Q7. Which component prevents accidental operation of a portable fire
extinguisher?
A) Pressure gauge
B) Discharge horn
C) Safety pin
D) Dip tube
Correct Answer: C
, The safety pin prevents accidental activation of the operating mechanism until it is
intentionally removed .
Q8. A technician finds a dry chemical extinguisher with a gauge reading in the
recharge region. What should be done?
A) Return it to service
B) Replace only the gauge
C) Recharge or service it as required
D) Increase the pressure manually
Correct Answer: C
A gauge outside the normal operating range indicates that the extinguisher may not be
ready for service and requires appropriate servicing .
Q9. A technician is inspecting a portable extinguisher and discovers significant
corrosion on the cylinder body. What is the appropriate response?
A) Paint over the corrosion
B) Polish the affected area
C) Remove the extinguisher from service for proper evaluation
D) Increase the operating pressure
Correct Answer: C
Significant cylinder corrosion can compromise pressure-vessel integrity. Cosmetic
treatment does not correct structural damage .
Q10. A technician finds an extinguisher with a missing operating instruction label.
What is the primary concern?
Technician Newest Main Exam Practice Up to
Date 2025/2026 Latest Exam Questions And
Answers Complete Study Guide Exam Prep
Practice Test.
Fire Classes & Extinguisher Selection
Q1. A portable fire extinguisher is selected for a fire involving energized electrical
equipment. Which classification is most appropriate?
A) Class A
B) Class B
C) Class C
D) Class D
Correct Answer: C
Class C extinguishers are intended for fires involving energized electrical equipment. The
classification addresses the electrical hazard rather than the fuel itself .
Q2. A technician encounters a fire involving ordinary combustible materials such
as wood, paper, and cloth. Which fire classification applies?
A) Class A
B) Class B
C) Class C
D) Class K
,Correct Answer: A
Class A fires involve ordinary combustible materials. Class B involves flammable liquids,
Class C involves energized electrical equipment, and Class K involves cooking oils and fats
.
Q3. Which extinguishing agent is commonly associated with Class K fires?
A) Water
B) Wet chemical
C) Carbon dioxide only
D) Dry sand
Correct Answer: B
Wet-chemical extinguishers are specifically designed for fires involving cooking oils and
fats, particularly in commercial cooking applications. The agent saponifies the oils,
creating a foam that seals off oxygen .
Q4. Which extinguisher is generally inappropriate for an energized electrical fire
because of its conductivity?
A) CO₂
B) Clean agent
C) Water
D) Dry chemical
Correct Answer: C
Water can conduct electricity and may expose the operator to electrical shock when used
improperly on energized electrical equipment .
Q5. Which classification would be most appropriate for a grease fire in a kitchen?
,A) Class A
B) Class B
C) Class K
D) Class D
Correct Answer: C
Class K fires involve cooking oils and fats common to kitchen environments. Wet-chemical
agents are specifically designed for this hazard .
Inspection & Maintenance
Q6. Before servicing a stored-pressure dry chemical extinguisher, what is the
technician's most important initial consideration?
A) Remove the discharge hose
B) Verify that the extinguisher is depressurized
C) Remove the safety pin
D) Operate the handle repeatedly
Correct Answer: B
An extinguisher must be safely depressurized before disassembly. Removing components
from a pressurized cylinder can create a serious hazard .
Q7. Which component prevents accidental operation of a portable fire
extinguisher?
A) Pressure gauge
B) Discharge horn
C) Safety pin
D) Dip tube
Correct Answer: C
, The safety pin prevents accidental activation of the operating mechanism until it is
intentionally removed .
Q8. A technician finds a dry chemical extinguisher with a gauge reading in the
recharge region. What should be done?
A) Return it to service
B) Replace only the gauge
C) Recharge or service it as required
D) Increase the pressure manually
Correct Answer: C
A gauge outside the normal operating range indicates that the extinguisher may not be
ready for service and requires appropriate servicing .
Q9. A technician is inspecting a portable extinguisher and discovers significant
corrosion on the cylinder body. What is the appropriate response?
A) Paint over the corrosion
B) Polish the affected area
C) Remove the extinguisher from service for proper evaluation
D) Increase the operating pressure
Correct Answer: C
Significant cylinder corrosion can compromise pressure-vessel integrity. Cosmetic
treatment does not correct structural damage .
Q10. A technician finds an extinguisher with a missing operating instruction label.
What is the primary concern?
