IFSTA 7 EXAM QUESTION BANK, QUESTIONS WITH COMPLETE SOLUTIONS (100% VERIFIED)
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IFSTA
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IFSTA
IFSTA 7 EXAM QUESTION BANK,
QUESTIONS WITH COMPLETE
SOLUTIONS (100% VERIFIED)
IFSTA 7 EXAM QUESTION BANK,
QUESTIONS WITH COMPLETE
SOLUTIONS (100% VERIFIED)
A compartment is any: - Answer open space with no complete fire barrier dividing it.
A portable fire extinguisher must b...
IFSTA 7 EXAM QUESTION BANK,
QUESTIONS WITH COMPLETE
SOLUTIONS (100% VERIFIED)
, IFSTA 7 EXAM QUESTION BANK,
QUESTIONS WITH COMPLETE
SOLUTIONS (100% VERIFIED)
A compartment is any: - Answer ✓✓open space with no complete fire barrier dividing it.
A portable fire extinguisher must be labeled with the: - Answer ✓✓letters and/or
symbols that designate its class rating.
An extinguishing agent, such as dry chemical or Halon-replacement agent, terminates
the combustion reaction by: - Answer ✓✓interfering with the chemical chain reaction.
Before entering the building or fire area, the firefighter who is assigned to the nozzle of
the attack hose should: - Answer ✓✓open the nozzle fully to check for adequate flow.
Class A portable fire extinguishers are rated from 1-A through 40-A based upon the
amount of water and: - Answer ✓✓duration and range of discharge used in
extinguishing test fires
Class K fires involve: - Answer ✓✓cooking oils
Class K rated extinguishers work because of _____, which converts fatty acids into a
soapy film. - Answer ✓✓saponification
During overhaul, prying tools can be used to: - Answer ✓✓remove baseboards and
window frames.
During the _____ stage of fire development, the three elements of the fire triangle come
together and the combustion process begins. - Answer ✓✓incipient
Extinguish any fire near the _____ first when attacking a vehicle fire - Answer ✓✓
occupants
Fires develop through four stages: incipient, growth, _____, and decay. - Answer ✓✓
fully developed
Heat that is radiated to the insulating air layer between PPE and your body: - Answer ✓
✓can cause heat stress and failure of the PPE.
How does a compartment fire affect pressure in and around gases in the compartment?
- Answer ✓✓Heat from a fire increases the pressure of the surrounding gases.
,How would a fire containing plastics be classified? - Answer ✓✓Class A
Hydrogen cyanide (HCN) is a product of combustion that: - Answer ✓✓targets the
brain after being inhaled, ingested, or absorbed into the body.
If a firefighter aims a solid or straight stream at the ceiling so that water will rain down
and extinguish the burning item, he or she is using a(an): - Answer ✓✓indirect attack
If a firefighter aims a solid stream at an item that is on fire and applies water until the
item is no longer burning, he or she is using a(an): - Answer ✓✓direct attack
In a compartment fire, smoke flashover indicators include rapidly increasing volume,
turbulence, optical density, and: - Answer ✓✓darkening color
In a ventilation-limited compartment fire that has a large volume of flammable gases,
opening a door or window could result in: - Answer ✓✓backdraft
In the fire environment, convection usually involves the transfer of heat through: -
Answer ✓✓the movement of hot smoke and fire gases
Materials that burn at normal oxygen levels will burn more intensely in _____
atmospheres. - Answer ✓✓oxygen-enriched
Observed from the exterior, a high neutral plane may indicate that the fire is in the early
stages of development, or could indicate: - Answer ✓✓a fire above your level.
Overhaul operations include: - Answer ✓✓searching for hidden fires
Portable fire extinguishers are classified according to the: - Answer ✓✓type of fire they
are designed to extinguish.
Sawdust ignites more easily than a log because the sawdust has a higher: - Answer ✓
✓surface-to-mass ratio
The flow path of a structure fire is comprised of two regions: the ambient air flow in and
the: - Answer ✓✓hot exhaust flow out
The minimum temperature at which a fuel in the air must be heated in order to start self-
sustained combustion is known as the: - Answer ✓✓autoignition temperature (AIT).
The transfer of heat through and between solids is known as: - Answer ✓✓conduction
Trash container fires are likely to be fought using Class A foam or: - Answer ✓✓a
master stream
, What occurs when a mixture of fuel and oxygen encounters an external heat source
with sufficient heat or thermal energy to start the combustion reaction? - Answer ✓✓
smoke explosion
What should the attack team do if they open the door to a structure and observe a low
neutral plane and turbulent smoke? - Answer ✓✓Apply water to the hot gas layer, but
stay outside the structure
What will establish new flow paths between the fire compartment and exterior vents of
the building? - Answer ✓✓Firefighters advancing a hoseline through an open door or
ventilating windows to make entry into a building
What will occur if firefighters begin an attack on a ventilation-limited structure fire with
ventilation alone? - Answer ✓✓The fire's heat release rate and spread will
progressively increase as additional vents are made.
When a firefighter controls doors and windows during fire attack, it is an example of: -
Answer ✓✓oxygen exclusion
When a shed or other unattached structure is on fire, the primary objective is to: -
Answer ✓✓protect exposures
When a substance changes from one type of matter into another, such as two or more
substances combining to form compounds, the substance undergoes a: - Answer ✓✓
chemical reaction
When an extinguishing agent is determined to be safe and effective for use on
combustible metals, it will: - Answer ✓✓include application instructions on the
faceplate.
When attacking fire in stacked and piled materials, _____, then apply water or Class A
foam until extinguished. - Answer ✓✓use hooks or pike poles to break apart material
When firefighters apply water to the hot gas layer in a compartment, it will: - Answer ✓
✓reduce the radiant heat flux from the upper layer.
When performing a transitional attack, a _____ stream may be the best choice because
it will not upset the thermal layering as much as other stream patterns. - Answer ✓✓
straight
When solid fuels are heated, they begin to _____ and release fuel gases and vapors. -
Answer ✓✓pyrolize
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