PRACTICE EXAM FIREFIGHTER questions and answers with solutions 2025

Which of the following was not suggested for personnel protection with regard to dealing with the chemical in question? A. Keep upwind of the chemical. B. Wear self-contained breathing apparatus. C. Avoid bodily contact with the chemical. D. Any chemical that may inadvertently contact the body should be washed off with large amounts of alcohol. - ANSWER D. Any chemical that may inadvertently contact the body should be washed off with large amounts of alcohol. If a container of ethylene oxide has been subjected to fire for a prolonged period of time, what is the recommended distance for safe evacuation? - ANSWER 5,000 feet What dilution of ethylene oxide with water is required to effectively inhibit its flammability? - ANSWER 24: 1 Once ethylene oxide becomes contaminated, what kind of chemical process may occur that can generate enough heat and pressure to rupture its containment? - ANSWER Polymerization 13. Which of the following choices is not recognized as a symptom stemming from ethylene oxide vapor exposure? A. Eye irritation B. Skin irritation or burns C. Irritation of the respiratory system D. Loss of muscular function - ANSWER C. Irritation of the respiratory system - ANSWER 16. Firefighters often apply a hose stream to the side of a building that is in close proximity to a fire. What is the primary reason for conducting such an operation? - ANSWER Radiant heat given off by the neighboring fire may adversely affect the nearest wall. Without the coolant effect of the hose stream, enough heat may be absorbed by an exposed surface to cause ignition and create a separate blaze.