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4th Class Exam HFD questions correctly answered graded A+
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4th Class Exam HFD questions correctly answered graded A+
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4th Class Exam HFD questions correctlyanswered graded A+
Which of the following is the most comprehensive standard relating to firefighter safety and health?
A. NFPA 1403
B. NFPA 1500
C. NFPA 1851
D. NFPA 1981 - correct answer ✔✔B. NFPA 1500
Which of the following is the BEST description of personnel accountability systems?
A. Systems that assist in keeping track of personnel's expenses
B. Systems that assist in keeping track of firefighters in the station
C. Systems that assist in keeping track of personnel's use of equipment
D. Systems that assist in keeping track of firefighters at an emergency scene - correct answer ✔✔D.
Systems that assist in keeping track of firefighters at an emergency scene
Type III construction requires exterior walls and structural members to be constructed of:
A. Wood and metal.
B. Steel and masonry.
C. Large-dimension lumber.
D. Non-combustible materials. - correct answer ✔✔D. Non-combustible materials.
In what construction type are exterior load-bearing walls composed entirely of wood?
A. Type I
B. Type III
C. Type IV
D. Type V - correct answer ✔✔D. Type V
Fuel loading is defined as the maximum heat produced if:
,A. No combustible materials are present.
B. All combustible materials in a given area burn.
C. Nothing but combustible materials are present.
D. None of the combustible materials in a given area burn. - correct answer ✔✔B. All combustible
materials in a given area burn.
Vertical tactical ventilation can be defined as channeling smoke from the:
A. Lowest point in a building.
B. Highest point in a building.
C. Point in a building that has the most windows.
D. Point in a building that has the least windows - correct answer ✔✔B. Highest point in a building.
In what fire stage is structural collapse very likely?
A. Incipient
B. Growth
C. Fully developed
D. Decay - correct answer ✔✔D. Decay
What building component may be an assembly of studs with exterior materials on the outside and an
interior covering on the inside?
A. Wall
B. Roof
C. Foundation
D. Floor/Ceiling - correct answer ✔✔A. Wall
When a substance changes from one type of matter to another, it has had a:
A. Chemical shift.
B. Physical change.
C. Chemical reaction.
, D. Physical alteration. - correct answer ✔✔C. Chemical reaction.
Which of the following represents the amount of energy that an object can release in the future?
A. Kinetic
B. Thermal
C. Potential
D. Mechanical - correct answer ✔✔C. Potential
What type of reaction releases energy in the form of heat and sometimes light?
A. Kinetic
B. Potential
C. Exothermic
D. Endothermic - correct answer ✔✔C. Exothermic
What are the elements necessary to create fire in the model represented by the fire triangle?
A. Fuel, oxygen, heat
B. Heat, fuel, ignition
C. Passive agents and heat
D. Oxygen and passive agents - correct answer ✔✔A. Fuel, oxygen, heat
What product of combustion is the most common product in structure fires?
A. Toxic smoke
B. Thermal energy
C. Hydrogen cyanide
D. Carbon monoxide - correct answer ✔✔D. Carbon monoxide
Which of the following BEST describes why firefighters must use SCBA during overhaul?
A. Smoke is not like other flammable gases; it will not burn or explode.
B. Hazardous concentrations of smoke are only present outside the structure.
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