IFSTA 7th Edition CHAPTER 4 | 75 COMPLETE QUESTIONS WITH 100%
RATED CORRECT ANSWERS | 2025 LATEST UPDATED | GET A+
Terms in this set (75)
Fires involve a heat- B. an oxidizer
producing chemical
reaction between fuel and:
(117) [4.3.11]
A. a catalyst.
B. an oxidizer.
C. free radicals.
D. a reducing agent.
When a substance changes C. chemical reaction
from one type of matter into
another, such as two or more
substances combining to form
compounds, the substance
undergoes a:
(118) [4.3.11]
A. dissolution.
B. metamorphosis.
C. chemical reaction.
D. physiological change.
,Which statement about C. A fuel's potential energy releases during combustion and
energy and combustion is converts to kinetic energy.
accurate? (120) [4.3.11]
A. A fuel's chemical energy is
the result of rapid
vibrations in the
molecules.
B. Chemical and physical
changes almost never
involve an exchange of
energy.
C.A fuel's potential
energy releases during
combustion and converts to
kinetic energy.
D. Chemical changes
involve an exchange of
energy; physical changes
involve no energy
exchange.
Which element of the fire D. Chemical chain reaction
tetrahedron is included to
explain flaming (gas- phase)
combustion? (120)
[4.3.11]
A. Fuel
B. Heat
C. Oxygen
D. Chemical chain reaction
,What occurs when a B. Piloted ignition
mixture of fuel and
oxygen encounter an
external heat source with
sufficient heat or thermal
energy to start the
combustion reaction?
(120) [4.3.11]
A. Autoignition
B. Piloted ignition
C. Kinetic ignition
D. Sustained ignition
The minimum temperature at A. autoignition temperature (AIT).
which a fuel in the air must be
heated in order to start self-
sustained combustion is
known as the: (122) [4.3.11]
A. autoignition
temperature (AIT).
B. piloted ignition
temperature (PIT).
C. lower explosive
(flammable) limit (LEL).
D. upper explosive
(flammable) limit (UEL).
, What causes flaming C. A gaseous fuel mixes with an adequate amount of oxygen
combustion to occur? and heats to ignition temperature.
(123) [4.3.11]
A. A solid fuel encounters an
open flame and entrain enough
air to ignite.
B. A gaseous fuel
encounters an external heat
source and experience
piloted ignition.
C.A gaseous fuel mixes
with an adequate amount of
oxygen and heats to
ignition temperature.
D.A solid fuel mixes with
an adequate amount of
liquid fuel to be able to
sustain an open burning
flame.
What is the cause of most fire B. Exposure to toxic gases found in smoke and/or lack of oxygen
deaths? (124) [4.3.10,
4.3.11]
A. Injuries caused by
falling materials or
structural collapse
B. Exposure to toxic gases
found in smoke and/or lack
of oxygen
C. Exposure to extreme
heat and/or contact with
flames and hot surfaces
D.Accidental injuries
sustained during escape
and/or evacuation
procedures
RATED CORRECT ANSWERS | 2025 LATEST UPDATED | GET A+
Terms in this set (75)
Fires involve a heat- B. an oxidizer
producing chemical
reaction between fuel and:
(117) [4.3.11]
A. a catalyst.
B. an oxidizer.
C. free radicals.
D. a reducing agent.
When a substance changes C. chemical reaction
from one type of matter into
another, such as two or more
substances combining to form
compounds, the substance
undergoes a:
(118) [4.3.11]
A. dissolution.
B. metamorphosis.
C. chemical reaction.
D. physiological change.
,Which statement about C. A fuel's potential energy releases during combustion and
energy and combustion is converts to kinetic energy.
accurate? (120) [4.3.11]
A. A fuel's chemical energy is
the result of rapid
vibrations in the
molecules.
B. Chemical and physical
changes almost never
involve an exchange of
energy.
C.A fuel's potential
energy releases during
combustion and converts to
kinetic energy.
D. Chemical changes
involve an exchange of
energy; physical changes
involve no energy
exchange.
Which element of the fire D. Chemical chain reaction
tetrahedron is included to
explain flaming (gas- phase)
combustion? (120)
[4.3.11]
A. Fuel
B. Heat
C. Oxygen
D. Chemical chain reaction
,What occurs when a B. Piloted ignition
mixture of fuel and
oxygen encounter an
external heat source with
sufficient heat or thermal
energy to start the
combustion reaction?
(120) [4.3.11]
A. Autoignition
B. Piloted ignition
C. Kinetic ignition
D. Sustained ignition
The minimum temperature at A. autoignition temperature (AIT).
which a fuel in the air must be
heated in order to start self-
sustained combustion is
known as the: (122) [4.3.11]
A. autoignition
temperature (AIT).
B. piloted ignition
temperature (PIT).
C. lower explosive
(flammable) limit (LEL).
D. upper explosive
(flammable) limit (UEL).
, What causes flaming C. A gaseous fuel mixes with an adequate amount of oxygen
combustion to occur? and heats to ignition temperature.
(123) [4.3.11]
A. A solid fuel encounters an
open flame and entrain enough
air to ignite.
B. A gaseous fuel
encounters an external heat
source and experience
piloted ignition.
C.A gaseous fuel mixes
with an adequate amount of
oxygen and heats to
ignition temperature.
D.A solid fuel mixes with
an adequate amount of
liquid fuel to be able to
sustain an open burning
flame.
What is the cause of most fire B. Exposure to toxic gases found in smoke and/or lack of oxygen
deaths? (124) [4.3.10,
4.3.11]
A. Injuries caused by
falling materials or
structural collapse
B. Exposure to toxic gases
found in smoke and/or lack
of oxygen
C. Exposure to extreme
heat and/or contact with
flames and hot surfaces
D.Accidental injuries
sustained during escape
and/or evacuation
procedures
