The PRIMARY hazard of an oxidizer in a fire is its ability to:

• A. Cause toxic gas release
• B. Corrode metals
• C. Support flame without burning
• D. #Accelerate combustion

Answer: (D)

When an oxidizer is involved in a fire, the central danger is that it accelerates combustion by providing the oxygen needed for the fuel to burn more rapidly. This increases the heat release, makes flames hotter, and can cause fires to grow faster and spread to nearby materials. The oxidizer itself may not burn, but it fuels the reaction and can drive fires to ignite at lower temperatures or ignite fuels that wouldn’t burn as readily, which is why accelerating combustion is the primary hazard.

Toxic gas release and corrosion of metals can occur in or after combustion, but they are secondary hazards tied to the chemical reactions and material interactions, not the main factor that drives fire growth. The idea that an oxidizer merely supports a flame without burning is close, but the critical point is that it speeds up the reaction, making the fire more intense and harder to control.