NFPA 10 EXAM QUESTIONS AND ANSWERS
A colorless, odorless, electrically nonconductive inert gas that is a suitable medium for
extinguishing Class B and Class C fires - Answers -Carbon Dioxide
A powder composed of very small particles, usually sodium bicarbonate, potassium
bicarbonate, or ammonium phosphate-based with added particulate material
supplemented by special treatment toprovide resistance to packing, resistance to
moisture absorption (caking), and the proper flow capabilities - Answers -Dry Chemical
Normally an aqueous solution of organic or inorganic salts or a combination thereof that
forms an extinguishing agent. - Answers -Wet chemical
Electrically non-conducting, volatile, or gaseous fire extinguishant that does not leave a
residue uponevaporation. - Answers -Clean Agent
A system that is constructed in a manner that does not introduce foreign material into
the agent being recovered and has a means of visually inspecting the recovered agent
for contaminants. - Answers -Dry Chemical Closed Recovery System
A system that provides for the transfer of halogenated agents between fire
extinguishers, supply containers, and recharge and recovery containers so that none of
the halogenated agent escapes to the atmosphere. - Answers -Halogenated Closed
Recovery System
Cylinders (and cartridges) containing nitrogen, compressed air, carbon dioxide, or other
gases at a pressure higher than 500 psi (3447 kPa) at 70°F (21°C). - Answers -High-
Pressure Cylinder
Flammable liquids at least 1/4" deep - Answers -Flammable liquids of appreciable depth
Pressure testing of the extinguisher to verify its strength against unwanted rupture. -
Answers -Hydrostatic testing
A water-based extinguishing agent that uses an alkali metal salt as a freezing point
depressant. - Answers -Loaded stream extinguisher
All steel shells other than stainless steel and steel shells used for high-pressure
cylinders. - Answers -Mild Steel Shell
The normal operating pressure as indicated on the nameplate or cylinder of a fire
extinguisher. - Answers -Extinguisher Service Pressure
The pressure shown on the nameplate at which a shell was tested at time of
manufacture. - Answers -Factory Test Pressure
, Fires resulting from liquids that are forced, pumped, or sprayed. - Answers -Pressurized
Flammable Liquid Fires
The replacement of the extinguishing agent (also includes the expellant for certain types
of fire extinguishers). - Answers -Recharge
The actual walking distance from a point to the nearest fire extinguisher fulfilling hazard
requirements. - Answers -Travel Distance
A concentrate that, when added to water, reduces the surface tension and increases its
ability to penetrate and spread. - Answers -Wetting Agent
Surfactant
A fire extinguisher in which the expellant gas is in a separate container from the agent
storage container. - Answers -Cartridge/Cylinder Operated
A fire extinguisher that is intended to be used one time and not capable of or intended
to be recharged and returned to service. - Answers -Nonrechargable
Cylinders containing fire extinguishing agent (medium), nitrogen, compressed air, or
other compressed gases at a service pressure of 500 psi (3447 kPa) or lower at 70°F
(21°C). - Answers -Low-Pressure Cylinder
Solid materials in powder or granular form designed to extinguish Class D combustible
metal fires by crusting, smothering, or heat-transferring means. - Answers -Dry Powder
Either a local alarm device to indicate when an extinguisher is removed from its
designated location or a method of electronic communication (data transmission)
between an in-place fire extinguisher and an electronic monitoring device/system. -
Answers -Electronic Monitoring
Extinguisher retention device designed to mount and secure a specific extinguisher
model onto various surfaces by incorporating releasable straps or bands to secure the
fire extinguisher. - Answers -Extinguisher Bracket
An identifiable and readily accessible fire extinguisher housing device designed to store
and protect fire equipment. - Answers -Extinguisher Cabinet
Extinguisher mounting device designed for mounting a specific extinguisher model onto
stationary vertical surfaces. - Answers -Extinguisher Hanger
A quick check that a fire extinguisher is in its designated place, that it has not been
actuated or tampered with, and that there is no obvious physical damage or condition to
prevent its operation. - Answers -Extinguisher Inspection
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