EXTINGUISHERS EXAM QUIZZES
WITH ANSWERS | GRADED A+ .
When using a fire extinguisher, always approach the fire: - Correct Answer -with an exit behind you
Class C fires can be extinguished using: - Correct Answer -multipurpose dry chemicals
Class K fires involve: - Correct Answer -high temperature cooking oils, such as vegetable or animal
oils and fats
What factors should be considered when selecting a fire extinguisher? - Correct Answer -The fuel
The National Fire Protection Association (NFPA) requires portable fire extinguishers be inspected at
least --------- to ensure that they are accessible and operable. - Correct Answer -once a year
The greatest concern associated with selecting too small of an extinguisher is that: - Correct Answer
-the operator has to get closer to the fire
Clean agents are: - Correct Answer -gases that do not conduct electricity or leave a residue and are
nonvolatile
Pump tank extinguishers are used to apply: - Correct Answer -water
Water type extinguishers exposed to weather below 40 degrees require ------- to be added. - Correct
Answer -ant-freeze
Regular dry chemicals (sodium bicarbonate-based and potassium based) work on --------- fires. -
Correct Answer -Classes B and C
What extinguishing agents are being replaced because they have been banned for destroying the
Earths ozone layer? - Correct Answer -Halons or halogenated hydrocarbons
1
, What residue does a CO2 fire extinguisher leave when discharged? - Correct Answer -None
The use of halon agents is strictly controlled because it: - Correct Answer -damages the ozone layer
What is the relationship between dry powder and dry chemical extinguishing agents? - Correct
Answer -They are entirely different substances with entirely different applications.
The acronym for the four step process for proper use of fire extinguishers is: - Correct Answer -PASS
The first step for using a fire extinguisher is to: - Correct Answer -pull the pin
What class of fire involves combustible cooking media, such as oils and grease? - Correct Answer -
Class K
A loaded-stream fire extinguisher: - Correct Answer -prevents freezing by adding an anti-freezing
agent
The Aqueous Film Forming Foam (AFFF) portable fire extinguishers use what means for expelling
their contents? - Correct Answer -Compressed air
A phenomenon that occurs when mixtures of alkaline-based chemicals and certain cooking oils come
into contact resulting in the formation of a soapy film is called: - Correct Answer -saponification
What is the term for water-soluble flammable liquids such as alcohols, acetone, and others? -
Correct Answer -Polar solvents
Statement 1: Slow oxidation, such as rust, generates enough heat to become self-sustained.
Statement 2: Extinguishing agents deprive the combustion process of fuel, oxygen, or sufficient heat
to sustain the reaction.
2
WITH ANSWERS | GRADED A+ .
When using a fire extinguisher, always approach the fire: - Correct Answer -with an exit behind you
Class C fires can be extinguished using: - Correct Answer -multipurpose dry chemicals
Class K fires involve: - Correct Answer -high temperature cooking oils, such as vegetable or animal
oils and fats
What factors should be considered when selecting a fire extinguisher? - Correct Answer -The fuel
The National Fire Protection Association (NFPA) requires portable fire extinguishers be inspected at
least --------- to ensure that they are accessible and operable. - Correct Answer -once a year
The greatest concern associated with selecting too small of an extinguisher is that: - Correct Answer
-the operator has to get closer to the fire
Clean agents are: - Correct Answer -gases that do not conduct electricity or leave a residue and are
nonvolatile
Pump tank extinguishers are used to apply: - Correct Answer -water
Water type extinguishers exposed to weather below 40 degrees require ------- to be added. - Correct
Answer -ant-freeze
Regular dry chemicals (sodium bicarbonate-based and potassium based) work on --------- fires. -
Correct Answer -Classes B and C
What extinguishing agents are being replaced because they have been banned for destroying the
Earths ozone layer? - Correct Answer -Halons or halogenated hydrocarbons
1
, What residue does a CO2 fire extinguisher leave when discharged? - Correct Answer -None
The use of halon agents is strictly controlled because it: - Correct Answer -damages the ozone layer
What is the relationship between dry powder and dry chemical extinguishing agents? - Correct
Answer -They are entirely different substances with entirely different applications.
The acronym for the four step process for proper use of fire extinguishers is: - Correct Answer -PASS
The first step for using a fire extinguisher is to: - Correct Answer -pull the pin
What class of fire involves combustible cooking media, such as oils and grease? - Correct Answer -
Class K
A loaded-stream fire extinguisher: - Correct Answer -prevents freezing by adding an anti-freezing
agent
The Aqueous Film Forming Foam (AFFF) portable fire extinguishers use what means for expelling
their contents? - Correct Answer -Compressed air
A phenomenon that occurs when mixtures of alkaline-based chemicals and certain cooking oils come
into contact resulting in the formation of a soapy film is called: - Correct Answer -saponification
What is the term for water-soluble flammable liquids such as alcohols, acetone, and others? -
Correct Answer -Polar solvents
Statement 1: Slow oxidation, such as rust, generates enough heat to become self-sustained.
Statement 2: Extinguishing agents deprive the combustion process of fuel, oxygen, or sufficient heat
to sustain the reaction.
2
