Certified Fire Investigator Practice Exam

Which definition describes an "Ignitable Liquid"?

1. A solid material with a flashpoint

2. A gas that can sustain combustion

3. A liquid capable of fueling a fire

4. A material that cannot burn

The correct answer is: A liquid capable of fueling a fire

An ignitable liquid is defined as a liquid that has the ability to ignite and sustain combustion, making option C the correct choice. This encompasses a wide range of substances, including gasoline, alcohol, and various solvents, which are capable of producing vapors that can ignite when exposed to an ignition source, such as a spark or flame. Understanding this definition is crucial for fire investigators, as ignitable liquids are often involved in both accidental and intentional fires. Exploring the other options, a solid material with a flashpoint would not classify as a liquid and therefore cannot be an ignitable liquid. A gas that can sustain combustion does not fit the definition either, as it relates to gaseous materials rather than liquids. Lastly, a material that cannot burn is incorrect because it contradicts the fundamental nature of ignitable liquids, which must possess the ability to burn to be classified as such.