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Missouri Fire Fighter Test 2025 Questions and Answers The minimum temperature to which a fuel in air must be heated to begin self sustaining combustion independent of a heat source is the _________ - -Answer --Fire point The temperature at which the evaporation rate exceeds the rate of condensation is the ___________ - --Answer --Autoignition temperature The lowest temperature at which a liquid gives off sufficient vapors to ignite or flash at the surface is the _______ - --Answer --Flash point The ratio of a weight of a volume of gas to an equal volume of dry air (air=1) is referred to as the ___________ - --Answer --Vapor density There is normally about ______ oxygen in the air - --Answer Oxygen, itself, ______________________________ - --Answer --21% --Does not burn, it supports combustion ....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1