Which statement correctly describes the black-labelled CO2 extinguisher?

• A. Flammable liquids & Electrical fires
• B. Wood fires
• C. Wood/Textiles/Papers, Flammable liquids, Electrical fires
• D. Electrical fires

Answer: (C)

A black-labelled CO2 extinguisher is described as suitable for a broad range of fire types because CO2 works by displacing the air around the flame, smothering it without leaving a residue and without conducting electricity. This makes it particularly useful for electrical equipment fires, where you don’t want to introduce water or conductive agents, and it can also blanket flammable-liquid fires, helping to prevent vapour from feeding the flame. In the exam’s context, it’s also considered appropriate for small fires involving solid combustibles like wood, textiles, and papers. Taken together, that means the extinguisher is treated as applicable to wood/textiles/papers, flammable liquids, and electrical fires, which is why the broad statement is identified as the best answer.