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FFHB - Chapter 8

True/False
Indicate whether the sentence or statement is true or false.
 

 1. 

Dry powder and dry chemical agents can be used interchangably.
 

 2. 

Most extinguishers in use today require inverting prior to use.
 

 3. 

Multiple extinguishers are not as effective as one extinguisher on a fire.
 

 4. 

A synthetic foam that as it breaks down forms an aqueous layer or film over a flammable liquid is a carbon dioxide extinguisher.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 5. 

____ fires involve energized electrical equipment.
a.
Class A
d.
Class D
b.
Class B
e.
Class K
c.
Class C
 

 6. 

____ is the basic extinguishing agent for Class A materials.
a.
Water
d.
Potassium
b.
Carbon monoxide
e.
Sodium bicarbonate
c.
Carbon dioxide
 

 7. 

Wet-chemical extinguishers are used for special applications, such as ____ fires.
a.
Class A
d.
Class K
b.
Class C
e.
None of the above
c.
Class D
 

 8. 

A wood cribbing test is used for ____ extinguishers and agents.
a.
Class A
d.
Class D
b.
Class B
e.
Class K
c.
Class C
 

 9. 

Which of the following is not something that a firefighter would do in inspecting a portable fire extinguisher?
a.
Check that the unit has a tag indicating its last service or inspection date.
b.
Check to make sure the pin is firmly in place.
c.
Check to see when the extinguisher was last used.
d.
If the unit has a gauge, check to see that it is registering the proper pressure.
e.
Make sure the filled weight is stamped on the cylinder.
 

 10. 

The rating for a Class B extinguisher assumes that the operator will be ____.
a.
a professional
c.
untrained
b.
highly trained
d.
competent
 



 
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