NYC Portable Fire Extinguisher
Technician Certificate Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which class of fire extinguisher is primarily used for ordinary
combustible materials such as wood, paper, and cloth?
A. Class B
B. Class C
C. Class D
D. Class A
Rationale: Class A extinguishers are specifically designed for fires involving
ordinary combustible materials such as wood, paper, textiles, and plastics.
These extinguishers commonly use water or dry chemical agents.
2. A portable fire extinguisher technician must visually inspect stored
extinguishers at a minimum frequency of:
,A. Every 6 months
B. Annually
C. Monthly
D. Every 5 years
Rationale: NFPA 10 requires monthly visual inspections to ensure
extinguishers are accessible, fully charged, and free from damage or
obstruction.
3. Which extinguishing agent is commonly used in Class B fire
extinguishers?
A. Water
B. Dry chemical powder
C. Sand
D. Foam only for metals
Rationale: Dry chemical extinguishers are highly effective against
flammable liquid fires because they interrupt the chemical chain reaction
occurring during combustion.
4. What color is typically associated with a water fire extinguisher?
A. Blue
B. Black
,C. Red
D. Yellow
Rationale: Water extinguishers are generally red and may have additional
markings indicating the type of extinguishing agent contained within the
cylinder.
5. Which agency enforces fire safety regulations in New York City?
A. OSHA
B. EPA
C. FEMA
D. FDNY
Rationale: The Fire Department of the City of New York (FDNY) is
responsible for enforcing fire codes and regulating fire extinguisher
certification and maintenance within NYC.
6. A Class C fire involves:
A. Cooking oils
B. Combustible metals
C. Ordinary combustibles
D. Energized electrical equipment
Rationale: Class C fires involve energized electrical equipment, requiring
nonconductive extinguishing agents to reduce the risk of electrical shock.
, 7. Which hydrostatic testing interval commonly applies to stored-
pressure dry chemical extinguishers?
A. 3 years
B. 12 years
C. 20 years
D. 25 years
Rationale: Stored-pressure dry chemical extinguishers generally require
hydrostatic testing every 12 years according to NFPA 10 standards.
8. What is the primary purpose of hydrostatic testing?
A. Determine extinguisher color
B. Measure nozzle diameter
C. Verify cylinder integrity under pressure
D. Test extinguisher weight
Rationale: Hydrostatic testing checks whether the extinguisher cylinder can
safely withstand internal pressure without leaking or rupturing.
9. Which fire extinguisher type should never be used on energized
electrical equipment?
A. CO2
B. Dry chemical
Technician Certificate Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which class of fire extinguisher is primarily used for ordinary
combustible materials such as wood, paper, and cloth?
A. Class B
B. Class C
C. Class D
D. Class A
Rationale: Class A extinguishers are specifically designed for fires involving
ordinary combustible materials such as wood, paper, textiles, and plastics.
These extinguishers commonly use water or dry chemical agents.
2. A portable fire extinguisher technician must visually inspect stored
extinguishers at a minimum frequency of:
,A. Every 6 months
B. Annually
C. Monthly
D. Every 5 years
Rationale: NFPA 10 requires monthly visual inspections to ensure
extinguishers are accessible, fully charged, and free from damage or
obstruction.
3. Which extinguishing agent is commonly used in Class B fire
extinguishers?
A. Water
B. Dry chemical powder
C. Sand
D. Foam only for metals
Rationale: Dry chemical extinguishers are highly effective against
flammable liquid fires because they interrupt the chemical chain reaction
occurring during combustion.
4. What color is typically associated with a water fire extinguisher?
A. Blue
B. Black
,C. Red
D. Yellow
Rationale: Water extinguishers are generally red and may have additional
markings indicating the type of extinguishing agent contained within the
cylinder.
5. Which agency enforces fire safety regulations in New York City?
A. OSHA
B. EPA
C. FEMA
D. FDNY
Rationale: The Fire Department of the City of New York (FDNY) is
responsible for enforcing fire codes and regulating fire extinguisher
certification and maintenance within NYC.
6. A Class C fire involves:
A. Cooking oils
B. Combustible metals
C. Ordinary combustibles
D. Energized electrical equipment
Rationale: Class C fires involve energized electrical equipment, requiring
nonconductive extinguishing agents to reduce the risk of electrical shock.
, 7. Which hydrostatic testing interval commonly applies to stored-
pressure dry chemical extinguishers?
A. 3 years
B. 12 years
C. 20 years
D. 25 years
Rationale: Stored-pressure dry chemical extinguishers generally require
hydrostatic testing every 12 years according to NFPA 10 standards.
8. What is the primary purpose of hydrostatic testing?
A. Determine extinguisher color
B. Measure nozzle diameter
C. Verify cylinder integrity under pressure
D. Test extinguisher weight
Rationale: Hydrostatic testing checks whether the extinguisher cylinder can
safely withstand internal pressure without leaking or rupturing.
9. Which fire extinguisher type should never be used on energized
electrical equipment?
A. CO2
B. Dry chemical
