Class B fires involve which fuels?

• A. Water and foam
• B. Grease and gas
• C. Wood and paper
• D. Electrical equipment

Answer: (B)

Class B fires are fires fueled by flammable liquids or gases. Grease and gas fit that description, as they are liquids and gases that burn readily and can spread flames. Water and foam are extinguishing agents, not fuels; wood and paper are solid fuels belonging to Class A fires; electrical equipment involves energized sources and is treated as a different class rather than a fuel for Class B.