Which statement about the application of dry chemical agents is NOT true?

The statement regarding the use of dry chemical agents reducing the chance of flashback is not true because, while dry chemical agents can quickly interrupt the combustion process and extinguish a fire, they do not necessarily eliminate the possibility of flashback occurring. Flashback can happen when the conditions for ignition are present, and the chemical agents alone may not prevent the vaporized fuels from igniting again in some situations, particularly in liquid fuel fires where vapors may still be present after the initial suppression effort.

In contrast, other statements hold true: dry chemicals do not always provide immediate fire suppression as their effectiveness can vary based on circumstances; they are versatile and can be used on various classes of fires, including those involving flammable liquids and gases; and dry chemical agents may indeed have limitations in specific applications depending on the material involved or the conditions present at the fire scene.