Firefighting USCG License Exam
Questions and Answers Verified 2025
A person manning a fire hose under pressure with an all-purpose nozzle attached,
should be aware that the nozzle is most difficult to control when the handle position is
changed from __________.
(A) low velocity to high velocity fog
(B) fog to shut
(C) shut to solid stream
(D) solid stream to fog - ANSWER-C
A branch line valve of a fire extinguishing system on a MODU must be marked with the
____________.
A) maximum pressure allowed at that branch
B) name of the space or spaces which it serves
C) date of the last maintenance inspection
D) pressure needed to maintain an effective stream at that poin - ANSWER-B
A cargo hose is marked with the ____________.
A) maximum working pressure
B) bursting pressure
C) safety relief valve setting
D) maximum temperature - ANSWER-A
A CO2 portable extinguisher is annually checked by ____________.
A) reading the gage pressure
B) weighing the extinguisher
C) discharging a small amount of CO2
D) seeing if the seal has been broken - ANSWER-B
A combustible gas indicator will operate correctly ONLY when the ____________.
A) hydrocarbon content of the atmosphere is less than the U.E.L.
B) atmosphere is deficient in oxygen
C) compartment to be tested is free of CO2
D) All of the above - ANSWER-A
A definite advantage in the use of water as a fire extinguishing agent is its ability to
__________.
(A) absorb smoke and gases as water is converted from liquid to vapor
(B) vaporize and rapidly expand as water absorbs heat
(C) rapidly contract as water is converted from a liquid to a vapor
(D) alternate expansion and contraction as water in liquid state becomes vapor -
ANSWER-A
, A fire in a pile of linen is a class ____________.
A) A
B) B
C) C
D) D - ANSWER-A
A fire in trash and paper waste is classified as class ____________.
A) A
B) B
C) C
D) D - ANSWER-A
A foam-type portable fire extinguisher would be most useful in combating a fire in
____________.
A) solid materials such as wood or bales of fiber
B) flammable liquids
C) a piece of electrical equipment
D) combustible metallic solids - ANSWER-B
A galley grease fire would be classified as which class of fire?
A) A
B) B
C) C
D) D - ANSWER-B
A portable foam (stored-pressure type) fire extinguisher would be most useful in
combating a fire in ____________.
A) generators
B) oil drums
C) the bridge controls
D) combustible metals - ANSWER-B
According to the Chemical Data Guide, when burning, the grade B flammable liquid,
carbon disulfide produces ____________.
A) phosgene gas
B) sulfuric acid gas
C) sulfur dioxide gas
D) carbon tetrachloride - ANSWER-C
After extinguishing a paint locker fire using the fixed CO2 system, the next action is to
have the space ____________.
A) opened and burned material removed
B) left closed with vents off until all boundaries are cool
C) checked for oxygen content
D) doused with water to prevent reflash - ANSWER-B
Questions and Answers Verified 2025
A person manning a fire hose under pressure with an all-purpose nozzle attached,
should be aware that the nozzle is most difficult to control when the handle position is
changed from __________.
(A) low velocity to high velocity fog
(B) fog to shut
(C) shut to solid stream
(D) solid stream to fog - ANSWER-C
A branch line valve of a fire extinguishing system on a MODU must be marked with the
____________.
A) maximum pressure allowed at that branch
B) name of the space or spaces which it serves
C) date of the last maintenance inspection
D) pressure needed to maintain an effective stream at that poin - ANSWER-B
A cargo hose is marked with the ____________.
A) maximum working pressure
B) bursting pressure
C) safety relief valve setting
D) maximum temperature - ANSWER-A
A CO2 portable extinguisher is annually checked by ____________.
A) reading the gage pressure
B) weighing the extinguisher
C) discharging a small amount of CO2
D) seeing if the seal has been broken - ANSWER-B
A combustible gas indicator will operate correctly ONLY when the ____________.
A) hydrocarbon content of the atmosphere is less than the U.E.L.
B) atmosphere is deficient in oxygen
C) compartment to be tested is free of CO2
D) All of the above - ANSWER-A
A definite advantage in the use of water as a fire extinguishing agent is its ability to
__________.
(A) absorb smoke and gases as water is converted from liquid to vapor
(B) vaporize and rapidly expand as water absorbs heat
(C) rapidly contract as water is converted from a liquid to a vapor
(D) alternate expansion and contraction as water in liquid state becomes vapor -
ANSWER-A
, A fire in a pile of linen is a class ____________.
A) A
B) B
C) C
D) D - ANSWER-A
A fire in trash and paper waste is classified as class ____________.
A) A
B) B
C) C
D) D - ANSWER-A
A foam-type portable fire extinguisher would be most useful in combating a fire in
____________.
A) solid materials such as wood or bales of fiber
B) flammable liquids
C) a piece of electrical equipment
D) combustible metallic solids - ANSWER-B
A galley grease fire would be classified as which class of fire?
A) A
B) B
C) C
D) D - ANSWER-B
A portable foam (stored-pressure type) fire extinguisher would be most useful in
combating a fire in ____________.
A) generators
B) oil drums
C) the bridge controls
D) combustible metals - ANSWER-B
According to the Chemical Data Guide, when burning, the grade B flammable liquid,
carbon disulfide produces ____________.
A) phosgene gas
B) sulfuric acid gas
C) sulfur dioxide gas
D) carbon tetrachloride - ANSWER-C
After extinguishing a paint locker fire using the fixed CO2 system, the next action is to
have the space ____________.
A) opened and burned material removed
B) left closed with vents off until all boundaries are cool
C) checked for oxygen content
D) doused with water to prevent reflash - ANSWER-B
