Chapter 7 - JB

What is the standard shape used to identify a portable fire extinguisher used for flammable liquid fires?

• Blue circle

• Green triangle

• Yellow star

• Red square

Which statement about dry chemical agents is correct?

• Dry chemical agents are not subject to freezing.

• Dry chemical agents are compatible with all types of foam.

• Dry chemical agents are noncorrosive.

• All dry chemical agents have a multipurpose rating.

What is an advantage of portable fire extinguishers over hose lines?

• Longer duration

• Controllable rates of flow

• Greater heat absorption

• Faster deployment

All portable fire extinguishers use which means for expelling their contents?

• Volume

• Vacuum

• Gravity

• Pressure

Which is a disadvantage of CO2 extinguishers?

• Electrical conductivity

• Corrosive residue

• Short discharge range

• Cost

Which class of fire includes combustible cooking oils and fats?

• A

• B

• D

• K

Which of the following agents is formulated from finely ground sodium chloride and forms a solid crust over the material on fire?

• Dry chemical

• Halogenated agent

• Wet chemical

• Dry powder

Which statement regarding Class D extinguishing agents is true?

• The application methods are similar regardless of the agent and fuel involved.

• Most agents are effective on several Class D fuels.

• Some agents are also rated for other classes of fire.

• The specific agent must be matched to the specific fuel.

Which extinguishing agent is suitable for use on a Class C fire?

• Aqueous film-forming foam (AFFF)

• Dry powder

• Carbon dioxide

• Carbon tetrachloride

Which is a common dry chemical extinguishing agent?

• Carbon tetrachloride

• Potassium chloride

• Calcium bicarbonate

• Potassium hydrate