NM CID MS-14 Practice Questions - New Mexico CID MS-14 Dry Chemical Fire Protection Examination Exam

Aqueous film-forming foam (AFFF) extinguishes a hydrocarbon spill primarily by:

Saponifying animal or vegetable grease into a soapy foam Reducing enclosure oxygen to about 12 percent Forming an aqueous film that spreads on the fuel and a foam blanket that excludes air Freezing the fuel with discharged carbon-dioxide snow

Correct Answer:

Forming an aqueous film that spreads on the fuel and a foam blanket that excludes air

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