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**Portable Fire Extinguishers**

**Essentials of Fire Fighting, Seventh Edition**

6. Which type of extinguishing agent is used to extinguish a Class B fire? (256) [4.3.16]

A. Dry powder
B. Wet chemical
C. Carbon dioxide
D. Deionized water

7. Which statement about Class C fires is accurate? (256) [4.3.16]

A. Class C fires should be extinguished using a specialized wet chemical system.

Answer :

Final answer:

Class B fires are extinguished using agents like dry powder or carbon dioxide, while Class C fires require non-conductive agents to avoid electrical hazards. Using the correct agent is vital for effective and safe fire suppression. Special wet chemical systems are not suitable for Class C fires.


Explanation:

Understanding Class B and Class C Fire Extinguishers

In firefighting, understanding the correct extinguishing agent for different classes of fires is crucial. For Class B fires, which involve flammable liquids such as gasoline, oil, or grease, the appropriate extinguishing agent is typically dry powder or carbon dioxide. These agents work by smothering the fire, removing oxygen, or disrupting the chemical reaction of the fire.

Class C Fires

Class C fires involve energized electrical equipment. The correct approach to extinguishing a Class C fire is using agents that do not conduct electricity, such as carbon dioxide or dry powder. Therefore, it is inaccurate to state that Class C fires should be extinguished with a specialized wet chemical system, as this can pose additional hazards.


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