How many total classes of fire extinguishers are recognized?

• A. 3
• B. 4
• C. 5
• D. 6

Answer: (C)

The correct answer indicates that there are five recognized classes of fire extinguishers. These classes are categorized based on the types of fires they are designed to combat. Understanding these classes is essential for appropriate and effective fire response.

The classifications are as follows:

1. Class A extinguishers are used for ordinary combustible materials such as wood, paper, and cloth.

2. Class B extinguishers are effective against flammable liquids like gasoline, oils, and paints.

3. Class C extinguishers are intended for electrical fires, including those involving appliances, wiring, and panel boxes.

4. Class D extinguishers are used for fires involving combustible metals such as magnesium, titanium, and sodium.

5. Class K extinguishers are specifically designed for cooking oils and fats, commonly used in commercial kitchens.

Recognizing that there are five distinct classes helps ensure that individuals choose the appropriate extinguisher for the specific type of fire they may encounter. This knowledge is crucial for effective firefighting and safety in various environments.