Exam Questions and Correct Detailed Answers
2025 (Verified Answers) With Rationales
1. What is the first priority when responding to a hazardous materials incident?
• Secure the scene
• Perform rescue operations
• Ensure responder safety
• Begin containment procedures
Responder safety is always the highest priority to prevent further casualties or
contamination.
2. The type of PPE that offers the highest level of skin, respiratory, and eye
protection is:
• Level C
• Level B
• Level A
• Level D
Level A suits are fully encapsulated and used in environments where there are
known or suspected high levels of hazardous substances.
3. Which document provides detailed information about the properties and
handling of hazardous chemicals?
• DOT Emergency Response Guidebook
• Safety Data Sheet (SDS)
, • NFPA 704 marking
• MSDS label
The SDS offers comprehensive information on chemical properties, hazards,
safe handling, and emergency measures.
4. What is the primary method of identifying a hazardous material when
container labels are missing?
• Using detection and monitoring equipment
• Relying on shipping papers
• Contacting the manufacturer
• Assuming the worst-case scenario
Detection equipment helps confirm the presence and identity of unknown
substances when labels are absent.
5. Which of the following is NOT a function of a hazardous materials
technician?
• Analyze hazardous materials incidents
• Plan response operations
• Act as Incident Commander
• Implement decontamination procedures
Technicians operate under command and do not serve as the Incident
Commander.
6. A BLEVE is most likely to occur with which type of container?
• Railcar with solids
• Pressurized liquid tank
• Non-bulk drum