ESSENTIAL OF FIRE FIGHTING EXAM
2027 QUESTIONS AND ANSWERS
1. During a fire, the process of solid fuels being heated until they release flammable gases is
known as:
A. Pyrolysis
B. Sublimation
C. Vaporization
D. Fusion
Answer: A
Conceptual Explanation: Pyrolysis is the chemical decomposition of a solid material by
heating. It precedes combustion and is the process that releases the gases that actually
burn.
2. Which building construction type is characterized by the use of heavy timber for structural
members?
A. Type I
B. Type III
,C. Type IV
D. Type V
Answer: C
Conceptual Explanation: Type IV construction is known as Heavy Timber. It uses large-
dimension lumber for structural elements and does not have concealed spaces.
3. What is the expansion ratio for high-expansion foam?
A. 20:1 to 200:1
B. 2:1 to 20:1
C. 200:1 to 1000:1
D. 1000:1 to 2000:1
Answer: C
Conceptual Explanation: High-expansion foam typically has an expansion ratio ranging
from 200:1 to 1000:1, making it ideal for filling large areas like basements or aircraft
hangars.
4. What phenomenon occurs when all combustible surfaces and objects within a
compartment have been heated to their ignition temperature?
A. Backdraft
B. Rollover
C. Flashover
, D. Flameover
Answer: C
Conceptual Explanation: Flashover is the rapid transition from a growth stage to a fully
developed fire stage where everything in the room ignites simultaneously.
5. In the ICS system, what is the maximum recommended span of control for a single
supervisor?
A. 3 to 5 people
B. 7 to 10 people
C. 5 to 7 people
D. 2 to 4 people
Answer: C
Conceptual Explanation: While 3 to 7 is the range, the NIMS/ICS standard identifies 5 as
the optimal span of control, with 7 being the maximum effective limit.
6. What color is a fire hydrant that flows less than 500 GPM (1900 L/min) according to NFPA
291?
A. Green
B. Red
C. Orange
D. Light Blue
2027 QUESTIONS AND ANSWERS
1. During a fire, the process of solid fuels being heated until they release flammable gases is
known as:
A. Pyrolysis
B. Sublimation
C. Vaporization
D. Fusion
Answer: A
Conceptual Explanation: Pyrolysis is the chemical decomposition of a solid material by
heating. It precedes combustion and is the process that releases the gases that actually
burn.
2. Which building construction type is characterized by the use of heavy timber for structural
members?
A. Type I
B. Type III
,C. Type IV
D. Type V
Answer: C
Conceptual Explanation: Type IV construction is known as Heavy Timber. It uses large-
dimension lumber for structural elements and does not have concealed spaces.
3. What is the expansion ratio for high-expansion foam?
A. 20:1 to 200:1
B. 2:1 to 20:1
C. 200:1 to 1000:1
D. 1000:1 to 2000:1
Answer: C
Conceptual Explanation: High-expansion foam typically has an expansion ratio ranging
from 200:1 to 1000:1, making it ideal for filling large areas like basements or aircraft
hangars.
4. What phenomenon occurs when all combustible surfaces and objects within a
compartment have been heated to their ignition temperature?
A. Backdraft
B. Rollover
C. Flashover
, D. Flameover
Answer: C
Conceptual Explanation: Flashover is the rapid transition from a growth stage to a fully
developed fire stage where everything in the room ignites simultaneously.
5. In the ICS system, what is the maximum recommended span of control for a single
supervisor?
A. 3 to 5 people
B. 7 to 10 people
C. 5 to 7 people
D. 2 to 4 people
Answer: C
Conceptual Explanation: While 3 to 7 is the range, the NIMS/ICS standard identifies 5 as
the optimal span of control, with 7 being the maximum effective limit.
6. What color is a fire hydrant that flows less than 500 GPM (1900 L/min) according to NFPA
291?
A. Green
B. Red
C. Orange
D. Light Blue
