FEX SEATTLE COMPREHENSIVE EXAM QUESTIONS AND
SOLUTIONS 2025/2026 ALL GRADED A+
✔✔What is not a disadvantage of dry chemical extinguishers? - ✔✔Low rating
✔✔What rating does two 2 1/2 gallon water extinguishers have? - ✔✔2A
✔✔Fire equipment maintenance if the responsibility of whom? - ✔✔Tenant and owner
✔✔Loaded-stream fire extinguishes shall have the agent replaced when? - ✔✔Annually
✔✔Class D extinguishers have what type of numerical rating? - ✔✔None
✔✔Cartridge operated extinguishers shall be hydrostatically tested to ________? -
✔✔The manufacturer's test pressure
✔✔What is the identification mark of a Class A extinguisher? - ✔✔Green Triangle
✔✔Hydrostatic test shall be performed at? - ✔✔Approved facilities
✔✔Class D extinguishers shall be located not more than _________ from the hazard? -
✔✔75'
✔✔Class C fire extinguisher is for ___________? - ✔✔Electrical
✔✔What is the minimum rating for a fire extinguisher? - ✔✔2A10BC
✔✔Heated air to dry a low pressure cylinder shall not exceed _____. - ✔✔150
✔✔A discharge hose must be pressure tested for how long? - ✔✔One minute
✔✔The recommended antifreeze solution for a fire pail is ____________ - ✔✔Calcium
Chloride
✔✔How often do pressurized water extinguishers need to be hydrotested? - ✔✔5 Years
✔✔What is the identification mark of a Class C extinguisher? - ✔✔Blue circle
✔✔Who is the Authority having Jurisdiction? A) all B)Local C)WA state D)Federal -
✔✔All
✔✔What is a class B fire? - ✔✔Flammable liquids
, ✔✔What does servicing an extinguisher not include? - ✔✔Exhuming
✔✔Class C extinguishers are not required to have a ________ - ✔✔Numerical rating
✔✔What is the maximum amount of water allowed in a CO2 extinguisher? - ✔✔.01
percent by weight
✔✔What is the maximum amount of oil allowed in a co2 extinguisher? - ✔✔10 ppm
✔✔The vapor phase of CO2 shall not be less than_____% - ✔✔99.5
✔✔What is the maximum travel distance to a 2A rated extinguisher? - ✔✔75'
✔✔ABC fire extinguishers contain? - ✔✔Dry Chemical
✔✔Occupancy hazard protection shall be determined by what? - ✔✔Fire potential
✔✔What is the minimum height a fire extinguisher can be mounted? - ✔✔At least 4"
✔✔What is the identification mark of on a class D extinguisher? - ✔✔Yellow star
✔✔What is the test pressure of a CO2 hose? - ✔✔1250 PSI
✔✔What occupancy hazard is an auto repair shop? - ✔✔Extra high
✔✔What is the minimum rating for an extinguisher for cooking grease fires? - ✔✔40BC
✔✔What two chemicals shall be used on a cooking grease fire? - ✔✔Sodium
bicarbonate and potassium bicarbonate
✔✔An extinguisher with a copper or brass construction or joined by soft solder or rivets
should be? - ✔✔Destroyed
✔✔What does a 2 1/2 gallon pressurized water weigh? - ✔✔25lbs.
✔✔What is the maximum square footage of a 2A extinguisher in an ordinary hazard? -
✔✔3000 sq ft
✔✔What is the contents of a D fire extinguisher? - ✔✔Dry Powder
✔✔What chemical can not be mixed with a multipurpose dry chemical? - ✔✔Alkaline-
based
SOLUTIONS 2025/2026 ALL GRADED A+
✔✔What is not a disadvantage of dry chemical extinguishers? - ✔✔Low rating
✔✔What rating does two 2 1/2 gallon water extinguishers have? - ✔✔2A
✔✔Fire equipment maintenance if the responsibility of whom? - ✔✔Tenant and owner
✔✔Loaded-stream fire extinguishes shall have the agent replaced when? - ✔✔Annually
✔✔Class D extinguishers have what type of numerical rating? - ✔✔None
✔✔Cartridge operated extinguishers shall be hydrostatically tested to ________? -
✔✔The manufacturer's test pressure
✔✔What is the identification mark of a Class A extinguisher? - ✔✔Green Triangle
✔✔Hydrostatic test shall be performed at? - ✔✔Approved facilities
✔✔Class D extinguishers shall be located not more than _________ from the hazard? -
✔✔75'
✔✔Class C fire extinguisher is for ___________? - ✔✔Electrical
✔✔What is the minimum rating for a fire extinguisher? - ✔✔2A10BC
✔✔Heated air to dry a low pressure cylinder shall not exceed _____. - ✔✔150
✔✔A discharge hose must be pressure tested for how long? - ✔✔One minute
✔✔The recommended antifreeze solution for a fire pail is ____________ - ✔✔Calcium
Chloride
✔✔How often do pressurized water extinguishers need to be hydrotested? - ✔✔5 Years
✔✔What is the identification mark of a Class C extinguisher? - ✔✔Blue circle
✔✔Who is the Authority having Jurisdiction? A) all B)Local C)WA state D)Federal -
✔✔All
✔✔What is a class B fire? - ✔✔Flammable liquids
, ✔✔What does servicing an extinguisher not include? - ✔✔Exhuming
✔✔Class C extinguishers are not required to have a ________ - ✔✔Numerical rating
✔✔What is the maximum amount of water allowed in a CO2 extinguisher? - ✔✔.01
percent by weight
✔✔What is the maximum amount of oil allowed in a co2 extinguisher? - ✔✔10 ppm
✔✔The vapor phase of CO2 shall not be less than_____% - ✔✔99.5
✔✔What is the maximum travel distance to a 2A rated extinguisher? - ✔✔75'
✔✔ABC fire extinguishers contain? - ✔✔Dry Chemical
✔✔Occupancy hazard protection shall be determined by what? - ✔✔Fire potential
✔✔What is the minimum height a fire extinguisher can be mounted? - ✔✔At least 4"
✔✔What is the identification mark of on a class D extinguisher? - ✔✔Yellow star
✔✔What is the test pressure of a CO2 hose? - ✔✔1250 PSI
✔✔What occupancy hazard is an auto repair shop? - ✔✔Extra high
✔✔What is the minimum rating for an extinguisher for cooking grease fires? - ✔✔40BC
✔✔What two chemicals shall be used on a cooking grease fire? - ✔✔Sodium
bicarbonate and potassium bicarbonate
✔✔An extinguisher with a copper or brass construction or joined by soft solder or rivets
should be? - ✔✔Destroyed
✔✔What does a 2 1/2 gallon pressurized water weigh? - ✔✔25lbs.
✔✔What is the maximum square footage of a 2A extinguisher in an ordinary hazard? -
✔✔3000 sq ft
✔✔What is the contents of a D fire extinguisher? - ✔✔Dry Powder
✔✔What chemical can not be mixed with a multipurpose dry chemical? - ✔✔Alkaline-
based
