Answer :
Final answer:
A Class B fire extinguisher is used to fight gas fires. It works by cutting off the oxygen supply to these types of fires. It's important not to use extinguishers designed for other classes of fires (like A, C, and D) to put out a gas fire.
Explanation:
The Class B fire extinguisher is designed to combat fuel or gas fires. In this classification, the letter 'B' represents flammable or combustible liquids and gases, such as gasoline, oil, grease, and propane, which may be involved in a fire. Class B fire extinguishers work by cutting off a fire's oxygen supply, stopping the chemical reactions that enable fires to keep burning. Do note that other classes of fire extinguishers like Class A, C, and D are designed to fight different types of fires and shouldn't be used to extinguish a gas fire.
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