10/31/24, 5:12 AM 2024 update|Chapter 4 (IFSTA 7th Edition)|2024-2024 latest|COMPREHENSIVE QUESTIONS AND VERIFIED ANSWERS (1…
2024 update|Chapter 4 (IFSTA 7th
Edition)|2024-2024 latest|COMPREHENSIVE
QUESTIONS AND VERIFIED ANSWERS (100%
Correct solutions) GET IT 100% ACCURATE!!
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 C. chemical reaction
changes 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.
,10/31/24, 5:12 AM 2024 update|Chapter 4 (IFSTA 7th Edition)|2024-2024 latest|COMPREHENSIVE QUESTIONS AND VERIFIED ANSWERS (1…
Which statement about C. A fuel's potential energy releases during
energy and combustion combustion and converts to kinetic energy.
is 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
,10/31/24, 5:12 AM 2024 update|Chapter 4 (IFSTA 7th Edition)|2024-2024 latest|COMPREHENSIVE QUESTIONS AND VERIFIED ANSWERS (1…
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 A. autoignition temperature (AIT).
temperature at 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).
, 10/31/24, 5:12 AM 2024 update|Chapter 4 (IFSTA 7th Edition)|2024-2024 latest|COMPREHENSIVE QUESTIONS AND VERIFIED ANSWERS (1…
What causes flaming C. A gaseous fuel mixes with an adequate amount of
combustion to occur? oxygen 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 B. Exposure to toxic gases found in smoke and/or
fire deaths? (124) [4.3.10, lack of oxygen
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
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