Discussion
Which fire extinguisher should be used to extinguish a class C fire?
Answer: D
In the Indian classification of fires, class A is solid material, class B is liquids, class C is gases and class D is metals. For a fire involving gases, the dry powder (dry chemical) extinguisher is used, so the answer is Dry powder type, option (D). A liquid type is for class A fires, carbon dioxide is for electrical and liquid fires, and a halon type is another gaseous agent, which the key does not choose for the gas fire.
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