IFSTA 7th ch.14 Question with complete
solution 2023
When firefighters apply water to the hot gas layer in a compartment, it will: - correct
answer Reduce the radient heat flux from the upper layer
What can happen if excess steam is produced inside the structure as a result of
applying water on the fire? - correct answer Disruption of thermal layering
In which situation would fuel removal be a likely method of extinguishment. - correct
answer Grass fire (ground cover fire)
Closing the valve on a natural gas tank to stop the emission of gaseous fuel would be
an example of: - correct answer Fuel removal
When a fire fighter controls doors and windows during fire attack, it is an example of: -
correct answer Oxygen exclusion
Clean agents extinguish fire by: - correct answer Interrupting the combustion reaction
If you're positioned to make fire attack, which condition would be important
tocommunicate to your supervisor or IC - correct answer Smoke that changes from
grey to black
Firefighters should ensure that pass devices are on and operating properly: - correct
answer Before entering the structure
Which tool or piece of equipment is a member of a fire attack team likely to carry -
correct answer Hand light
Before entering the building or fire area, the firefighter who is assigned to the nozzle of
the attack hose should: - correct answer Open the nozzle fully to check for adequate
flow
What should the attack team do if they open the door to a structure and observe a low
neutral plane and turbulent smoke? - correct answer Apply water to hot gas layer but
stay outside of the structure
Why is it dangerous to work below the hot gas layer without attempting to cool it? -
correct answer The smoke contains fuel and can ignite at anytime
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): - correct answer Direct attack
, 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): - correct answer Indirect
attack
Why should a firefighter be outside the fire compartment when making an indirect attack
from the interior? - correct answer A large volume of steam will be created
If a fire fighter uses a "Z" pattern to apply water to the hot gas layer and then the
burning fuels at the floor level, he or she is using a(an): - correct answer Combination
attack
Which type or fire attack involves applying water from the outside of the structure in
order to reduce the potential for flash over and make the environment more survivable
for interior attack crew? - correct answer Transitional attack
When performing transitional attack a _______ stream may be the best choice because
it will not upset the thermal layering as much as other stream patterns. - correct answer
Straight stream
Which statement describes a safety guideline for operations at a multistory building? -
correct answer A firefighter must not use elevators to get to the fire floor (though
some department SOPs allow it)
Which is a characteristic if fires in residential basements? - correct answer
Firefighters working on a floor above the basement fire are at increased risk of floor
collapse
Which method of attack would put firefighters at the least risk when fighting a residential
basement fire? - correct answer Applying water through an exterior basement window
What is an example of protecting interior exposures? - correct answer Closing the
door between the fire and unaffected area
In a building that is protected by control mode sprinklers, firefighters need to: - correct
answer Complete suppression before turning system off
Which action would be taken first when performing suppression operations in a
structure protected by automatic sprinklers? - correct answer Connect pumper to the
FDC
At what point should a firefighter close a sprinkler systems main control valve - correct
answer Once the fire is under control and the IC gives the order
Which is a characteristic of outside screw and yoke valves - correct answer The
threaded portion of the screw is visible beyond the yoke when the valve is open
solution 2023
When firefighters apply water to the hot gas layer in a compartment, it will: - correct
answer Reduce the radient heat flux from the upper layer
What can happen if excess steam is produced inside the structure as a result of
applying water on the fire? - correct answer Disruption of thermal layering
In which situation would fuel removal be a likely method of extinguishment. - correct
answer Grass fire (ground cover fire)
Closing the valve on a natural gas tank to stop the emission of gaseous fuel would be
an example of: - correct answer Fuel removal
When a fire fighter controls doors and windows during fire attack, it is an example of: -
correct answer Oxygen exclusion
Clean agents extinguish fire by: - correct answer Interrupting the combustion reaction
If you're positioned to make fire attack, which condition would be important
tocommunicate to your supervisor or IC - correct answer Smoke that changes from
grey to black
Firefighters should ensure that pass devices are on and operating properly: - correct
answer Before entering the structure
Which tool or piece of equipment is a member of a fire attack team likely to carry -
correct answer Hand light
Before entering the building or fire area, the firefighter who is assigned to the nozzle of
the attack hose should: - correct answer Open the nozzle fully to check for adequate
flow
What should the attack team do if they open the door to a structure and observe a low
neutral plane and turbulent smoke? - correct answer Apply water to hot gas layer but
stay outside of the structure
Why is it dangerous to work below the hot gas layer without attempting to cool it? -
correct answer The smoke contains fuel and can ignite at anytime
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): - correct answer Direct attack
, 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): - correct answer Indirect
attack
Why should a firefighter be outside the fire compartment when making an indirect attack
from the interior? - correct answer A large volume of steam will be created
If a fire fighter uses a "Z" pattern to apply water to the hot gas layer and then the
burning fuels at the floor level, he or she is using a(an): - correct answer Combination
attack
Which type or fire attack involves applying water from the outside of the structure in
order to reduce the potential for flash over and make the environment more survivable
for interior attack crew? - correct answer Transitional attack
When performing transitional attack a _______ stream may be the best choice because
it will not upset the thermal layering as much as other stream patterns. - correct answer
Straight stream
Which statement describes a safety guideline for operations at a multistory building? -
correct answer A firefighter must not use elevators to get to the fire floor (though
some department SOPs allow it)
Which is a characteristic if fires in residential basements? - correct answer
Firefighters working on a floor above the basement fire are at increased risk of floor
collapse
Which method of attack would put firefighters at the least risk when fighting a residential
basement fire? - correct answer Applying water through an exterior basement window
What is an example of protecting interior exposures? - correct answer Closing the
door between the fire and unaffected area
In a building that is protected by control mode sprinklers, firefighters need to: - correct
answer Complete suppression before turning system off
Which action would be taken first when performing suppression operations in a
structure protected by automatic sprinklers? - correct answer Connect pumper to the
FDC
At what point should a firefighter close a sprinkler systems main control valve - correct
answer Once the fire is under control and the IC gives the order
Which is a characteristic of outside screw and yoke valves - correct answer The
threaded portion of the screw is visible beyond the yoke when the valve is open
