Question 649 Deck Safety

The correct answer is B) ignition temperature. The ignition temperature is the lowest temperature required to cause self-sustained combustion of a substance independent of any outside source of ignition. This is the key defining characteristic that makes ignition temperature the correct answer. The other options are incorrect because: A) Flash point refers to the minimum temperature at which a liquid gives off vapor in sufficient concentration to form an ignitable mixture with air. C) Combustion temperature is the temperature at which a substance undergoes rapid oxidation and releases heat. D) Explosive range refers to the range of concentrations of a flammable vapor or gas in air within which explosion can occur.