FlammableCombustible Liquids Exam

FDNY C92 Supervision of Flammable/Combustible Liquids Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• Which of the following is considered a Class I flammable liquid

according to NFPA 30?

• Diesel fuel
• Kerosene
• Gasoline
• Fuel oil

Rationale: Class I liquids have a flashpoint below 100°F. Gasoline is

classified as Class I because its flashpoint is well below this threshold.

• What is the minimum distance required between a Class I liquid

storage tank and a building according to NFPA 30? 1 / 4

• 10 feet
• 20 feet
• 50 feet
• 100 feet

Rationale: NFPA 30 requires a minimum of 50 feet between Class I

liquid storage tanks and any building for safety from fire and explosion hazards.

• Which type of container is preferred for transporting flammable

liquids?

• Cardboard drum
• Approved metal container
• Glass jar
• Open-top plastic container

Rationale: Approved metal containers are designed to safely handle

flammable liquids, prevent leaks, and reduce fire hazards.

• What does the term "flashpoint" refer to?
• Temperature at which a liquid boils
• Temperature at which a liquid evaporates
• Lowest temperature at which vapors ignite
• Temperature at which liquid freezes

Rationale: The flashpoint is the lowest temperature at which a liquid

produces enough vapor to ignite in the presence of an ignition source. 2 / 4

• Which of the following is a key requirement for a flammable liquid

storage room?

• Must be located underground
• Must be ventilated to the street
• Must have explosion-proof electrical fixtures
• Must have open flames for heating

Rationale: Explosion-proof fixtures prevent sparks in areas where

flammable vapors may accumulate, reducing fire risk.

• How should small spills of flammable liquids be cleaned?
• Wash with water immediately
• Sweep into open trash
• Use absorbent materials designed for flammable liquids
• Leave to evaporate

Rationale: Absorbent materials safely contain and remove flammable

liquids without creating additional fire hazards.

• What is the proper action if a flammable liquid catches fire?
• Use water
• Use a Class B fire extinguisher
• Smother with a blanket
• Pour more liquid on it

Rationale: Class B extinguishers are designed for flammable liquid fires

and work by smothering the flames or breaking the chemical reaction. 3 / 4

• Which of the following liquids is classified as Class II combustible?
• Gasoline
• Kerosene
• Acetone
• Ethanol

Rationale: Class II combustible liquids have a flashpoint between 100°F

and 140°F. Kerosene falls into this category.

• What is the primary hazard of flammable liquid vapors?
• Toxicity only
• Explosion and fire
• Environmental contamination only
• Corrosion

Rationale: Vapors can ignite, leading to explosions and fire hazards.

• According to FDNY rules, which of the following must be

maintained in a flammable liquid storage area?

• Fire extinguisher readily accessible
• Open flame for testing
• Unlabeled containers
• Wooden shelving

Rationale: Fire extinguishers must be accessible to allow immediate

response to any fire incident.

• Which of the following is a requirement for secondary

containment of flammable liquids?

• / 4