Which of the following statements about foam proportioning is MOST accurate?
Most Class A foams are mixed in proportions of 3 to 6 percent.
Most Class B foams are mixed in proportions of 1 percent or less.
Mixing Class A foam at a higher recommended percentage results in a thick, dry foam.
The percentage rate for proportioning foam is determined by the authority having jurisdiction.
Which of the following proportioning methods depends on the Venturi Principle to draw foam through a hose connected to the foam concentrate container and into the water stream?
Injection
Eduction
Premixing
Batch-mixing
Which of the following statements about foam proportioners and delivery systems is MOST accurate?
The foam proportioner adds air into the foam solution to produce finished foam.
The foam proportioner and delivery system must be compatible to produce usable foam.
Either a foam proportioner or a foam generating system is needed to produce a foam fire stream.
The foam-generating system introduces the appropriate amount of foam concentrate into the water to form foam solution.
Which of the following statements about foam hazards is MOST accurate?
Never flush foam concentrates from exposed skin.
Some foam concentrates and their vapors may be harmful if inhaled.
There is no need to flush or wash equipment that has been used to apply foam.
Most Class A and Class B foams act to lubricate and preserve pumps, eductors, and other equipment.
**The deployment of a master stream device requires a minimum of:
one firefighter.
two firefighters.
three firefighters.
four firefighters.
**If a vehicle using ethanol or methanol is on fire, use only ___ to extinguish.
water
Class D fire extinguishers
aqueous film forming foam
Alcohol Resistant Class B foam
Which kind of ground cover fire is slow moving and smoldering?
Crown fire
Ladder fire
Ground fire
Surface fire
**Which kind of ground cover fire burns on the soil surface, consuming low-lying grass, shrubs, and other vegetation?
**Which of the following is a long narrow strip of fire extending from the main fire?
Head
Flank
Island
Finger
**What rule can be amended if a life safety hazard to a victim that can be saved without undue risk to firefighters is present on scene?
SAR rule
SCBA rule
Two-in, two-out rule
Situational awareness rule
**What fireground role is defined as the one that works to locate and assist firefighters trapped during operations?
Fireground support company
Rapid intervention crew/team
Second-arriving company
Incident Commander
What fireground role should be two or more members wearing complete PPE and respiratory protection, with the purpose of locating firefighters incapacitated during operations?
Which of the following BEST describes the flash point of flammable liquids?
Less than 100°F (38°C)
Each varies, but it is never less than 50°F (10°C)
Each varies, but it is always higher than 50°F (10°C)
Greater than 100°F (38°C)
Where should apparatus be located at a Class B fire?
Upwind and downhill of the incident
Upwind and uphill of the incident
Downwind and downhill from the incident
Downwind and uphill of the incident
**Water as a mechanical tool can move ___ to where they can burn safely.
Class B fuels
Class C fuels
Class A fuels
Class K fuels
Techniques for extinguishment at bulk transport vehicle fires are similar to fires in:
high-rise structures.
residential occupancies.
underground tunnels.
flammable fuel storage facilities.
**Which of the following BEST describes a way to determine the nature of cargo at a bulk transport vehicle fire?
Estimate based on type of container
Use past experience to predict
Use bills of lading or placards
Estimate using information from witnesses
Which of the following BEST describes approach and staging techniques used at flammable gas incidents?
Approach from downwind and stage on upwind side
Approach from upwind and stage on the downwind side
Approach from and stage on the upwind side
Approach from and stage on the downwind side
Which of the following BEST describes the process taken at flammable gas incidents if gas is burning?
Extinguish burning flame
Use hose streams to protect exposures if needed
Request mutual aid extrication teams
Monitor, but do not shut off pressurized gas supply
**Control of all evidence must be maintained as part of the ___ required in legal cases.
area of origin
chain of custody
fire investigation
collection of evidence
Which of the following may appear on floors and indicate where fuel burned in that location?
Debris
Charring
Flashover
Fire pattern
**Which of the following decides what evidence is collected?
Fire chief
Firefighter
Fire investigator
Insurance investigator
**Who has legal responsibility for determining origin and cause of a fire?
Police officer
Responsibility for ___ can lie with state fire marshal, state police, or other state agency.
fire cause
investigation
amount of loss
insurance information
**Once the control of scene has been relinquished, personnel can only re-enter after:
providing valid identification.
securing permission from owner.
speaking with the insurance investigator.
logging in with the person granting access.
