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This class of fire extinguisher is a carbon dioxide extinguisher and is used on flammable liquids.

A) Class A
B) Class B
C) Class C
D) Class D

Answer :

Final answer:

A carbon dioxide fire extinguisher is categorized as a Class B fire extinguisher and is used primarily on flammable liquids such as gasoline and oil by displacing oxygen to extinguish the fire.

Explanation:

The question asks about the class of fire extinguisher a carbon dioxide extinguisher is and its application on flammable liquids. Carbon dioxide fire extinguishers are used on flammable liquids, making them Class B fire extinguishers. These extinguishers are effective in putting out fires involving flammable liquids such as gasoline, oil, and solvents because CO2 extinguishers work by displacing oxygen, or, in other words, removing the oxygen element of the fire triangle. As a result, the fire is suffocated, and the flame goes out.

Additionally, carbon dioxide fire extinguishers are suitable for use on electrical fires, which are categorized under Class C, because they don't leave a residue that can harm sensitive electronics. However, for the specific question about flammable liquids, the correct answer is B) Class B.

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