JJ Keller Entry Level Driver Training CDL Practice Test 2025 – Comprehensive All-in-One Guide to Exam Success!

Image Description

Question: 1 / 400

What is a characteristic of Class B fire extinguishers?

They are designed for electrical fires

They are designed for flammable liquids

Class B fire extinguishers are specifically designed to combat fires involving flammable liquids, such as gasoline, oil, grease, and other petroleum-based substances. This classification is crucial because these types of fires require different extinguishing agents compared to those needed for other classes of fires. For instance, using water on a Class B fire can worsen the situation, as it could spread the flammable liquid. Instead, Class B extinguishers utilize agents like foam, carbon dioxide, or dry chemical powders that can effectively smother the fire and prevent further ignition. Understanding the proper use of a Class B extinguisher is critical for safety and fire prevention in environments where flammable liquids are present.

Get further explanation with Examzify DeepDiveBeta

They are ideal for cooking fires

They are used for combustibles like wood

Next Question

Report this question

Download JJ Keller Entry Level Driver Training for CDL (Commercial Driver’s License) Practice Test PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy