Illinois BOF MOD A Exam & Practice Exam
Questions and Answers Practice Questions with
Solutions Newest | Already Graded A+
Question 1
A fire in a modern residential structure with an open floor plan spreads more
rapidly than in a compartmentalized home primarily due to which factor?
Select one:
A) Thermal radiation
B) Thermal column
C) Ceiling jet
D) Flow path
- ANSWER- Flow path
Question 2
Which element is present in the fire tetrahedron but NOT in the fire triangle?
Select one:
A) Heat
B) Chemical reaction
C) Oxygen
D) Fuel
- ANSWER- Chemical reaction
Question 3
A fire involving combustible metals such as magnesium or titanium requires which
class of fire extinguisher?
Select one:
A) Class A
B) Class B
,C) Class C
D) Class D
- ANSWER- Class D
Question 4
Between the growth stage and the fully developed stage, the rapid increase in
temperature causes off-gassing of most materials, resulting in:
Select one:
A) Backdraft
B) Stratification
C) Thermal runaway
D) Flashover
- ANSWER- Flashover
Question 5
What is the primary difference between backdraft and flashover?
Select one:
A) Flashover is ventilation-limited, whereas backdraft is fuel-limited
B) Flashover occurs at a higher temperature than backdraft
C) Flashover occurs in the decay stage only; backdraft can occur in any stage
D) Backdraft is a more violent introduction of oxygen than flashover
- ANSWER- Backdraft is a more violent introduction of oxygen than
flashover
Question 6
When considering fire behavior in modern versus legacy structures, a substantial
difference in building construction is:
Select one:
A) Cost
B) Energy efficiency
,C) Modern structures are built larger
D) Legacy structures burn more quickly
- ANSWER- Energy efficiency
Question 7
Which is the most common method used to extinguish a fire?
Select one:
A) Cool the burning materials
B) Exclude oxygen
C) Remove the fuel
D) Interrupt the chemical chain reaction
- ANSWER- Cool the burning materials
Question 8
A fire that involves wood, paper, and clothes is classified as which class?
Select one:
A) Class 1
B) Type 1
C) Class A
D) Type A
- ANSWER- Class A
Question 9
Volume, velocity, density, and which other attribute contribute to the art of reading
smoke?
Select one:
A) Color
B) Clarity
C) Conduct
D) Thickness
, - ANSWER- Color
Question 10
Which fire class responds violently when water is applied?
Select one:
A) Class A
B) Class B
C) Class C
D) Class D
- ANSWER- Class D
Question 11
How many classes of fire are there?
Select one:
A) 3
B) 5
C) 7
D) 9
- ANSWER- 5
Question 12
What is the best way to extinguish a Class C fire?
Select one:
A) Use a fire extinguisher
B) Cut the power
C) Use copious amounts of water
D) Call the utility company
- ANSWER- Cut the power
Questions and Answers Practice Questions with
Solutions Newest | Already Graded A+
Question 1
A fire in a modern residential structure with an open floor plan spreads more
rapidly than in a compartmentalized home primarily due to which factor?
Select one:
A) Thermal radiation
B) Thermal column
C) Ceiling jet
D) Flow path
- ANSWER- Flow path
Question 2
Which element is present in the fire tetrahedron but NOT in the fire triangle?
Select one:
A) Heat
B) Chemical reaction
C) Oxygen
D) Fuel
- ANSWER- Chemical reaction
Question 3
A fire involving combustible metals such as magnesium or titanium requires which
class of fire extinguisher?
Select one:
A) Class A
B) Class B
,C) Class C
D) Class D
- ANSWER- Class D
Question 4
Between the growth stage and the fully developed stage, the rapid increase in
temperature causes off-gassing of most materials, resulting in:
Select one:
A) Backdraft
B) Stratification
C) Thermal runaway
D) Flashover
- ANSWER- Flashover
Question 5
What is the primary difference between backdraft and flashover?
Select one:
A) Flashover is ventilation-limited, whereas backdraft is fuel-limited
B) Flashover occurs at a higher temperature than backdraft
C) Flashover occurs in the decay stage only; backdraft can occur in any stage
D) Backdraft is a more violent introduction of oxygen than flashover
- ANSWER- Backdraft is a more violent introduction of oxygen than
flashover
Question 6
When considering fire behavior in modern versus legacy structures, a substantial
difference in building construction is:
Select one:
A) Cost
B) Energy efficiency
,C) Modern structures are built larger
D) Legacy structures burn more quickly
- ANSWER- Energy efficiency
Question 7
Which is the most common method used to extinguish a fire?
Select one:
A) Cool the burning materials
B) Exclude oxygen
C) Remove the fuel
D) Interrupt the chemical chain reaction
- ANSWER- Cool the burning materials
Question 8
A fire that involves wood, paper, and clothes is classified as which class?
Select one:
A) Class 1
B) Type 1
C) Class A
D) Type A
- ANSWER- Class A
Question 9
Volume, velocity, density, and which other attribute contribute to the art of reading
smoke?
Select one:
A) Color
B) Clarity
C) Conduct
D) Thickness
, - ANSWER- Color
Question 10
Which fire class responds violently when water is applied?
Select one:
A) Class A
B) Class B
C) Class C
D) Class D
- ANSWER- Class D
Question 11
How many classes of fire are there?
Select one:
A) 3
B) 5
C) 7
D) 9
- ANSWER- 5
Question 12
What is the best way to extinguish a Class C fire?
Select one:
A) Use a fire extinguisher
B) Cut the power
C) Use copious amounts of water
D) Call the utility company
- ANSWER- Cut the power
