Florida Fire State Practice Exam

What synthetic materials are commonly used to make personal protective firefighter hoods?

1. Kevlar and nylon

2. Nomex and PBI

3. Polyester and acrylic

4. Gortex and wool

The correct answer is: Nomex and PBI

Nomex and PBI are two widely used synthetic materials for making personal protective firefighter hoods due to their inherent fire-resistant properties. Nomex is particularly recognized for its ability to withstand high temperatures and provide thermal insulation, which is crucial for protecting a firefighter's head and neck during exposure to heat and flames. PBI, or polybenzimidazole, enhances this protection with even higher thermal resistance and is known for maintaining its integrity and protective characteristics at elevated temperatures. These materials are designed to offer not only durability but also comfort and ease of movement for firefighters while ensuring their safety in hazardous conditions. In contrast, the other options comprise materials that may not provide the same level of thermal protection or have characteristics that are less suitable for the high-risk environment of firefighting.