NCIDQ IDFX Practice Exam

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Which of the following fabrics is known to burn but has self-extinguishing properties when removed from flame?

Cotton
Nylon
Olefin
Linen

The correct answer is: Nylon

The correct answer is nylon. Nylon is a synthetic fabric that does indeed burn, but it exhibits self-extinguishing properties when the flame source is removed. This is due to its chemical composition, which allows it to cease combustion in the absence of an ignition source. This property makes nylon a safer choice in applications where there is potential exposure to flames or high temperatures. Cotton and linen are both natural fibers that are known to burn readily and do not have the self-extinguishing capabilities. Olefin also burns but has different properties and does not self-extinguish in the same way that nylon does. The unique self-extinguishing characteristic of nylon makes it particularly useful in various applications, including outdoor gear and certain types of protective clothing.