MPO - FINAL QUESTIONS WITH 100% CORRECT ANSWERS

Foam was introduced as an extinguishing agent in the 1800s by mixing two powders consisting of ____________ and _______________ with water in a foam generator. Correct Answer aluminum sulfate; sodium bicarbonate What term refers to the device that mechanically mixes foam concentrate with water? Correct Answer Foam proportioner The letters "AFFF" stand for which type of foam? Correct Answer Aqueous film-forming foam Water mixed with a foam concentrate produces: Correct Answer foam solution Foam solution must be mixed with air to produce the final product called: Correct Answer finished foam The expansion of foam solution depends on good mechanical agitation and effective: Correct Answer aeration How many basic types of foam are there? Correct Answer Two The two basic types of foam are __________ and ____________. Correct Answer chemical; mechanical The time required for a foam blanket to spread out across a fuel surface is known as: Correct Answer knockdown speed and flow What term describes foam's ability to minimize fuel pick-up? Correct Answer Fuel resistance What term describes foam's ability to shed hydrocarbons? Correct Answer Oleophobic Foam used for firefighting is classified as either Class _____ or Class _____. Correct Answer A; B What class of foam is used primarily for ordinary combustible fires? Correct Answer Class A Class A foams are sometimes referred to as ______________ because they improve the penetrating effect of water and allow for greater heat absorption. Correct Answer Wetting agents