Fire Extinguishers Exam Q’s and A’s (Basic fire extinguisher
questions. Pub Ed 1; Fire Prevention; Systems and Equipment)
List the 5 classifications of fire - -A- ordinary combustibles; B- flammable liquids C-
energized electrical; D- flammable metals; K- Animal & vegetable oils
-Fire Extinguisher - -A a manually operated device for extinguishing small fires
-What are Fire Extinguishers used as? - -First line of defence against fires of limited size.
-What are the 4 ways in which a fire can be extinguished? - -removing access to oxygen,
removing fuel, inhibiting the chemical chain reaction and removing heat.
-Describe class A fire extinguishers and it's symbol - -Class A fires have a fuel source
consisting of common materials like paper, cardboard, lumber and plastics. Green Triangle
-Describe Class B fire extinguishers and it's symbol - -Class B fires are flammable or
combustible liquids such as gasoline, kerosene or common organic solvents. Red Square
-Describe Class C Fire extinguishers and it symbol - -Class C fires have common fuel
sources but are ignited by electrical equipment such as appliances, switches, panel boxes
power tools, or hot plates. Blue Circle
-Describe Class D Fire extinguishers and it's symbol - -Class D fires involve combustible
metals such as magnesium, titanium, potassium, sodium and pyrophoric organometallic
reagents. Yellow Star
-Describe Class K Fire extinguishers - -Class K fires are kitchen fires and have fuels similar
to those in class B (vegetable oil and animal oils).
-CO2 extinguishers are effective on which classes of fires? - -Class B and C. The Carbon
Dioxide effectively suffocates the fire and leaves no residue
-What is the range of class A ratings? - -1-A throught 40-A
-________,________, and _________ fires must be extinguished for an extinguisher to receive a
___A through a __A rating - -Wood panel fire, excelsior fire and wood crib fire, 1 6
-Are extinguishers being tested for a larger than 6 A rating subjected to all of these tests? -
-Portable fire extinguishers that are tested for larger than a 6-A rating are only subjected to
the wood crib test.
-With Class A rated extinguishers is any differential made relative to expert and non-
expert operations? - -No
questions. Pub Ed 1; Fire Prevention; Systems and Equipment)
List the 5 classifications of fire - -A- ordinary combustibles; B- flammable liquids C-
energized electrical; D- flammable metals; K- Animal & vegetable oils
-Fire Extinguisher - -A a manually operated device for extinguishing small fires
-What are Fire Extinguishers used as? - -First line of defence against fires of limited size.
-What are the 4 ways in which a fire can be extinguished? - -removing access to oxygen,
removing fuel, inhibiting the chemical chain reaction and removing heat.
-Describe class A fire extinguishers and it's symbol - -Class A fires have a fuel source
consisting of common materials like paper, cardboard, lumber and plastics. Green Triangle
-Describe Class B fire extinguishers and it's symbol - -Class B fires are flammable or
combustible liquids such as gasoline, kerosene or common organic solvents. Red Square
-Describe Class C Fire extinguishers and it symbol - -Class C fires have common fuel
sources but are ignited by electrical equipment such as appliances, switches, panel boxes
power tools, or hot plates. Blue Circle
-Describe Class D Fire extinguishers and it's symbol - -Class D fires involve combustible
metals such as magnesium, titanium, potassium, sodium and pyrophoric organometallic
reagents. Yellow Star
-Describe Class K Fire extinguishers - -Class K fires are kitchen fires and have fuels similar
to those in class B (vegetable oil and animal oils).
-CO2 extinguishers are effective on which classes of fires? - -Class B and C. The Carbon
Dioxide effectively suffocates the fire and leaves no residue
-What is the range of class A ratings? - -1-A throught 40-A
-________,________, and _________ fires must be extinguished for an extinguisher to receive a
___A through a __A rating - -Wood panel fire, excelsior fire and wood crib fire, 1 6
-Are extinguishers being tested for a larger than 6 A rating subjected to all of these tests? -
-Portable fire extinguishers that are tested for larger than a 6-A rating are only subjected to
the wood crib test.
-With Class A rated extinguishers is any differential made relative to expert and non-
expert operations? - -No
