Answer :
Final answer:
Class D chemical fire extinguishers are specifically designed to put out fires caused by burning metals. The four classes of extinguishers A, B, C, and D are for different types of fires including ordinary combustibles, flammable liquids and gases, electrical equipment, and metals respectively.
Explanation:
The class of fire extinguishers used to put out metal fires is Class D. Chemical fire extinguishers are categorized into four classes-- A, B, C, and D-- based on the types of fires they can extinguish. Class A extinguishers are for ordinary combustibles such as wood or paper. Class B extinguishers are for flammable liquids and gases. Class C extinguishers are for electrical equipment fires.
Lastly, Class D extinguishers are specially designed to combat fires from burning metals like magnesium, titanium, or sodium. These fires usually occur in laboratories or industries, which use such metals for various tasks. Therefore, it's crucial for such places to have a Class D extinguisher on hand.
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