Commercial Driver License (CDL) Class B Practice Test

What is a common misconception about fire extinguishers?

1. They can be used on any type of fire

2. All fire extinguishers are the same

3. They should be used from a distance

4. They can only be used if the fire is small

The correct answer is: They can be used on any type of fire

A common misconception about fire extinguishers is that they can be used on any type of fire. In reality, different classes of fire extinguishers are designed to combat specific classes of fires, such as those involving flammable liquids, electrical equipment, or ordinary combustibles. For example, using a water-based extinguisher on an oil fire or an electrical fire can be extremely dangerous, as it may spread the fire or cause electrocution. Knowing the type of fire and having the appropriate extinguisher is crucial for effective firefighting and personal safety. Understanding the correct application of fire extinguishers based on the type of fire can help prevent dangerous situations and ensure safe handling in emergency circumstances.