FDNY C92 Supervision of Flammable/Combustible
Liquids Exam Practice Questions And Correct
Answers (Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary hazard associated with flammable liquids?
A. Electrical shock
B. Corrosive burns
C. Fire and explosion
D. Radiation exposure
Rationale: Flammable liquids pose a significant risk of fire and
explosion due to their low flash points and vapors that can ignite
easily.
2. Which NFPA standard specifically addresses the storage of flammable
and combustible liquids?
A. NFPA 13
B. NFPA 30
C. NFPA 70
, D. NFPA 99
Rationale: NFPA 30 provides detailed requirements for the storage,
handling, and use of flammable and combustible liquids.
3. Flammable liquids are classified as liquids with a flashpoint below:
A. 100°F
B. 100°F (37.8°C)
C. 140°F
D. 200°F
Rationale: Flammable liquids are defined as liquids with a flashpoint
below 100°F, making them highly susceptible to ignition.
4. Combustible liquids are liquids with flashpoints of:
A. Below 73°F
B. 100°F to 200°F
C. Above 200°F
D. Below 32°F
Rationale: Combustible liquids have higher flashpoints than
flammable liquids, typically between 100°F and 200°F.
5. The flashpoint of a liquid is:
A. The temperature at which it boils
B. The temperature at which it freezes
C. The temperature at which it produces enough vapor to ignite
D. The temperature at which it evaporates
Rationale: Flashpoint is the minimum temperature at which a liquid
, generates enough vapor to ignite in the presence of an ignition
source.
6. Which container material is preferred for flammable liquid storage?
A. Wood
B. Plastic
C. Metal approved for flammable liquids
D. Glass
Rationale: Approved metal containers prevent leakage and reduce
static buildup, minimizing fire hazards.
7. What type of ventilation is recommended for flammable liquid storage
areas?
A. Natural ventilation only
B. No ventilation needed
C. Mechanical explosion-proof ventilation
D. Standard room ventilation
Rationale: Mechanical, explosion-proof ventilation helps disperse
flammable vapors and reduces the risk of fire or explosion.
8. Static electricity can ignite flammable liquids. Which practice reduces
this risk?
A. Using plastic funnels
B. Wearing synthetic clothing
C. Grounding and bonding containers
D. Storing liquids in sealed cardboard boxes
, Rationale: Grounding and bonding equalize electrical potential,
preventing sparks that could ignite vapors.
9. In NFPA 30, Class IA liquids have a flashpoint below:
A. 100°F and boiling point above 200°F
B. 73°F and boiling point below 100°F
C. 100°F and boiling point below 200°F
D. 140°F and boiling point above 200°F
Rationale: Class IA liquids are highly flammable and extremely
volatile, requiring strict handling and storage controls.
10. Class IB liquids are defined as having a flashpoint:
A. Below 73°F
B. 73–100°F and boiling point below 100°F
C. Below 73°F and boiling point ≥100°F
D. 100–140°F
Rationale: Class IB liquids are flammable but have a higher boiling
point than Class IA liquids.
11. What is the minimum distance between a flammable liquid
storage area and a building property line?
A. 5 feet
B. 10 feet
C. 20 feet
D. 50 feet
Liquids Exam Practice Questions And Correct
Answers (Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary hazard associated with flammable liquids?
A. Electrical shock
B. Corrosive burns
C. Fire and explosion
D. Radiation exposure
Rationale: Flammable liquids pose a significant risk of fire and
explosion due to their low flash points and vapors that can ignite
easily.
2. Which NFPA standard specifically addresses the storage of flammable
and combustible liquids?
A. NFPA 13
B. NFPA 30
C. NFPA 70
, D. NFPA 99
Rationale: NFPA 30 provides detailed requirements for the storage,
handling, and use of flammable and combustible liquids.
3. Flammable liquids are classified as liquids with a flashpoint below:
A. 100°F
B. 100°F (37.8°C)
C. 140°F
D. 200°F
Rationale: Flammable liquids are defined as liquids with a flashpoint
below 100°F, making them highly susceptible to ignition.
4. Combustible liquids are liquids with flashpoints of:
A. Below 73°F
B. 100°F to 200°F
C. Above 200°F
D. Below 32°F
Rationale: Combustible liquids have higher flashpoints than
flammable liquids, typically between 100°F and 200°F.
5. The flashpoint of a liquid is:
A. The temperature at which it boils
B. The temperature at which it freezes
C. The temperature at which it produces enough vapor to ignite
D. The temperature at which it evaporates
Rationale: Flashpoint is the minimum temperature at which a liquid
, generates enough vapor to ignite in the presence of an ignition
source.
6. Which container material is preferred for flammable liquid storage?
A. Wood
B. Plastic
C. Metal approved for flammable liquids
D. Glass
Rationale: Approved metal containers prevent leakage and reduce
static buildup, minimizing fire hazards.
7. What type of ventilation is recommended for flammable liquid storage
areas?
A. Natural ventilation only
B. No ventilation needed
C. Mechanical explosion-proof ventilation
D. Standard room ventilation
Rationale: Mechanical, explosion-proof ventilation helps disperse
flammable vapors and reduces the risk of fire or explosion.
8. Static electricity can ignite flammable liquids. Which practice reduces
this risk?
A. Using plastic funnels
B. Wearing synthetic clothing
C. Grounding and bonding containers
D. Storing liquids in sealed cardboard boxes
, Rationale: Grounding and bonding equalize electrical potential,
preventing sparks that could ignite vapors.
9. In NFPA 30, Class IA liquids have a flashpoint below:
A. 100°F and boiling point above 200°F
B. 73°F and boiling point below 100°F
C. 100°F and boiling point below 200°F
D. 140°F and boiling point above 200°F
Rationale: Class IA liquids are highly flammable and extremely
volatile, requiring strict handling and storage controls.
10. Class IB liquids are defined as having a flashpoint:
A. Below 73°F
B. 73–100°F and boiling point below 100°F
C. Below 73°F and boiling point ≥100°F
D. 100–140°F
Rationale: Class IB liquids are flammable but have a higher boiling
point than Class IA liquids.
11. What is the minimum distance between a flammable liquid
storage area and a building property line?
A. 5 feet
B. 10 feet
C. 20 feet
D. 50 feet
