FIRE EXTINGUISHING AGENTS
PORTABLE FIRE EXTINGUISHERS.
EXAM QUESTIONS WITH VERIFIED
ANSWERS. A+ GRADE 2025/2026.
Introduction - ANS • Portable fire extinguishers are
required in a variety of occupancies.
• Vary in size and type of agent used
• Designed for different purposes
Purposes of Fire Extinguishers - ANS • Extinguish incipient fires
• Control fires where traditional methods
are not recommended
• Available for immediate use on
small, incipient fires
Extinguishing Incipient Stage Fires - ANS • One advantage of fire extinguishers is their
portability.
- Most fire department vehicles carry at least one fire extinguisher.
• The primary disadvantage of fire extinguishers is that they are "one-shot" devices.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, - If the device does not control the fire, some other device or method is needed.
Extinguishing Fires with the Appropriate Extinguishing Agent pt.1 - ANS • Fire extinguishers
are also used to control fires where traditional extinguishing methods are not recommended.
- Using water on fires that involve energized electrical equipment increases the risk of
electrocution to fire fighters.
- Appropriate extinguishing agents are also required for fires that involve flammable liquids,
cooking oils, and combustible metals.
Extinguishing Fires with the Appropriate Extinguishing Agent pt.2 - ANS • As a fire fighter,
you must know: Which fires require special agents, What type should be used, How to operate
the different types
Methods of Fire Extinguishment - ANS • Extinguishers stop burning by: Cooling the fuel,
Cutting off the supply of oxygen, Interrupting the chain reactions, Saponification
Classes of Fires - ANS • Essential to match extinguisher and fire
- Some agents are more efficient on certain fires. Some agents will not control certain fires.
Some agents are dangerous when applied to certain fires.
• Before selecting a fire extinguisher, ask
yourself, "Which class of fire am I fighting?"
Class A Fires - ANS • Involve ordinary combustibles and
natural vegetation.
• Textiles, papers, plastics, rubber, wood
• Water is the most common extinguishing agent.
Class B Fires - ANS • Involve flammable or combustible liquids and flammable gases
• Alcohol, gas, oil, LPG
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
PORTABLE FIRE EXTINGUISHERS.
EXAM QUESTIONS WITH VERIFIED
ANSWERS. A+ GRADE 2025/2026.
Introduction - ANS • Portable fire extinguishers are
required in a variety of occupancies.
• Vary in size and type of agent used
• Designed for different purposes
Purposes of Fire Extinguishers - ANS • Extinguish incipient fires
• Control fires where traditional methods
are not recommended
• Available for immediate use on
small, incipient fires
Extinguishing Incipient Stage Fires - ANS • One advantage of fire extinguishers is their
portability.
- Most fire department vehicles carry at least one fire extinguisher.
• The primary disadvantage of fire extinguishers is that they are "one-shot" devices.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, - If the device does not control the fire, some other device or method is needed.
Extinguishing Fires with the Appropriate Extinguishing Agent pt.1 - ANS • Fire extinguishers
are also used to control fires where traditional extinguishing methods are not recommended.
- Using water on fires that involve energized electrical equipment increases the risk of
electrocution to fire fighters.
- Appropriate extinguishing agents are also required for fires that involve flammable liquids,
cooking oils, and combustible metals.
Extinguishing Fires with the Appropriate Extinguishing Agent pt.2 - ANS • As a fire fighter,
you must know: Which fires require special agents, What type should be used, How to operate
the different types
Methods of Fire Extinguishment - ANS • Extinguishers stop burning by: Cooling the fuel,
Cutting off the supply of oxygen, Interrupting the chain reactions, Saponification
Classes of Fires - ANS • Essential to match extinguisher and fire
- Some agents are more efficient on certain fires. Some agents will not control certain fires.
Some agents are dangerous when applied to certain fires.
• Before selecting a fire extinguisher, ask
yourself, "Which class of fire am I fighting?"
Class A Fires - ANS • Involve ordinary combustibles and
natural vegetation.
• Textiles, papers, plastics, rubber, wood
• Water is the most common extinguishing agent.
Class B Fires - ANS • Involve flammable or combustible liquids and flammable gases
• Alcohol, gas, oil, LPG
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
