Hazmat Operations Practice Test Questions Answered (49 Questions) 2025 RATED A+, Exams of Nursing

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(49 Questions) 2025 RATED A+

What information does the ERG provide to hazardous materials responders? A. Detailed information on material properties B. Initial actions to take a hazardous materials incident C. Mitigation and recovery procedures D. Decontamination and environmental remediation procedures - correct answers ✅B. Initial actions to take a hazardous materials incident Which NFPA standard addresses competencies for hazardous materials/WMD responders? A. 1500 B. 472 C. 1902 D. 1421 - correct answers ✅B. 472 What is the acronym for the OSHA federal document containing hazardous materials response competencies? A. HAZEL B. HAZWOPER C. HADDOCK

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D. HAPPIER - correct answers ✅B. HAZWOPER Which responder level is trained to enter heavily contaminated areas for the purpose of stopping a hazardous materials release? A. Operations B. Advanced C. Awareness D. Technician - correct answers ✅D. Technician Which is a detailed profile of a chemical or chemical mixture provided by the manufacturer? A. Local emergency response plan (LERP) B. Emergency Response Guide (ERG) C. The safety data sheet (SDS) D. NFPA 49 (Hazardous Chemicals Data) - correct answers ✅C. The safety data sheet (SDS) Core competencies of operations level hazardous materials/WMD responders are:

(49 Questions) 2025 RATED A+

A. Offensive B. Indirect C. Passive D. Defensive - correct answers ✅D. Defensive What federal agency enforces and publicizes laws and regulations governing transportation of goods? A. OSA B. OPA C. DOT D. DOHA - correct answers ✅C. DOT The measurable characteristic of a chemical are called ___________ properties. A. Molecular B. Empirical C. Reactivity D. Physical - correct answers ✅D. Physical

(49 Questions) 2025 RATED A+

A(n) __________ change occurs when a chemical undergoes a change at the molecular level, usually with a release of some form of energy. A. Physical B. Electrical C. Morphological D. Chemical - correct answers ✅D. Chemical What does it mean if a substance's vapor density is 2.3? A. It will float in air B. It has a relatively high boiling point C. It has an extraordinarily high boiling point D. It will sink in air - correct answers ✅D. It will sink in air Which term refers to the residue of a chemical that has been released and has come into contact with people, the environment, and animals? A. Infection B. Transfer

(49 Questions) 2025 RATED A+

C. Exposure D. Contaminant - correct answers ✅D. Contaminant Which term refers to a material capable of posing an unreasonable risk to health, safety, or the environment? A. Containment B. Hazardous material C. Class II substance D. Toxin - correct answers ✅B. Hazardous material What is secondary contaminant? A. Contamination with a Class II substance or radioactivity B. Contamination with small amounts that do not cause harm C. Contact with another benign substance D. A contaminated person or object contaminating someone else, such as a rescuer - correct answers ✅D. A contaminated person or object contaminating someone else, such as a rescuer

(49 Questions) 2025 RATED A+

What type of changes can chemicals undergo when subjected to outside influences, such as heat, cold, and pressure? A. Thermoplastic B. Physical C. Thermodynamic D. Spatial - correct answers ✅B. Physical ________________ identify(ies) the hazard as a liquid, solid, or gas. A. Matter properties B. State of matter C. Physical matter D. Chemical matter - correct answers ✅B. State of matter What is the term for a catastrophic failure of a pressurized cylinder of liquid? A. BEDEL B. PLUME C. CLOPE D. BLEVE - correct answers ✅D. BLEVE

(49 Questions) 2025 RATED A+

What is the temperature at which a liquid fuel gives off sufficient vapor such that when an ignition source is present the vapors will ignite? A. Flammable range B. Flash point C. Fire point D. Ignition temperature - correct answers ✅B. Flash point What is the temperature at which sustained combustion will occur? A. Flammable range B. Flash point C. Fire point D. Ignition temperature - correct answers ✅C. Fire point What is the term for the pressure exerted by the vapor of a liquid until the vapor and the liquid are in equilibrium? A. Vapor density B. Vapor pressure

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C. Head pressure D. Head density - correct answers ✅B. Vapor pressure What is the term for the ability of a substance to dissolve in water? A. Water formulation B. Water corrosivity C. Chemical solubility D. Water solubility - correct answers ✅D. Water solubility What is used as a measurement of the corrosive strength of a substance? A. Corrosivity index B. pH C. Sed rate D. Partial pressure - correct answers ✅B. pH What is the process by which chemicals enter the body through the gastrointestinal tract? A. Absorption

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B. Ingestion C. Injection D. Inhalation - correct answers ✅B. Ingestion What is the term for the process by which chemicals are brought into the body through an open cut? A. Absorption B. Ingestion C. Injection D. Inhalation - correct answers ✅C. Injection What do Dewar containers hold? A. Bulk amounts of distilled spirits B. Substances that cannot come into contact with foodstuffs C. Anything that is transported by passenger jet D. Cryogenic liquids - correct answers ✅D. Cryogenic liquids What is the purpose of the rings around the MC-312 corrosives tanker?

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A. Cooling B. Heating C. Structural stability D. Vapor collection - correct answers ✅C. Structural stability What is the Department of Transportation's hazardous class for toxic substances? A. 8 B. 6 C. 4 D. 1 - correct answers ✅B. 6 What is the term for any material that poses an unreasonable risk to human health, safety, or the environment? A. Hazardous good B. Dangerous material C. Hazardous material D. Dangerous commodity - correct answers ✅C. Hazardous material

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Drums, bags, and carboys are examples of _________ containers. A. Nonbulk B. Bulk C. Flammable-materials D. Dry-bulk - correct answers ✅A. Nonbulk Pipeline warning signs include a warning symbol, the pipeline owner's name, and a(n): A. United Nations identification number B. Emergency contact number C. ERG guide number D. Hazard statement - correct answers ✅B. Emergency contact number What does the blue diamond on the NFPA 704 symbol indicate? A. Flammability B. Reactivity C. Special symbols

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D. Health hazard - correct answers ✅D. Health hazard What does the red diamond on the NFPA 704 symbol indicate? A. Flammability B. Reactivity C. Special symbols D. Health hazard - correct answers ✅A. Flammability What does the yellow diamond on the NFPA 704 symbol indicate? A. Flammability B. Reactivity C. Special symbols D. Health hazard - correct answers ✅B. Reactivity What does the white diamond on the NFPA 704 symbol indicate? A. Flammability B. Reactivity C. Special symbols

(49 Questions) 2025 RATED A+

D. Health hazard - correct answers ✅C. Special symbols What is the term for shipping documentation carried on road and highway transportation vehicles? A. Waybill B. Consist C. Dangerous cargo manifest D. Bill of lading - correct answers ✅D. Bill of lading What type of radiation packaging provides the least protection? A. Type A B. Type B C. Type C D. Type D - correct answers ✅A. Type A When choosing a route along which to respond to a reported hazardous materials incident, how should the approach be planned? A. From upwind and upgrade

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B. From upwind and downgrade C. From downwind and upgrade D. From downwind and downgrade - correct answers ✅A. From upwind and upgrade Which of the following is a critical factor in determining the appropriate level of PPE? A. The experience of the firefighters on hand B. The availability of protective gear available C. The physical state and characteristics of the material D. The responders experience with this material - correct answers ✅C. The physical state and characteristics of the material Which function should occur in the warm zone? A. Command post B. Decontamination corridor C. Triage area D. Staging area - correct answers ✅B. Decontamination corridor

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Relocation of people who are threatened by a potential hazard is called: A. Evacuation B. Isolation C. Decontamination D. Rescue - correct answers ✅A. Evacuation At a hazardous materials incident, what are the hot, warm, and cold zones? A. Control zones B. Isolation perimeters C. Protective action distances D. Groups or divisions - correct answers ✅A. Control zones Which type of breathing apparatus is equipped with an escape cylinder? A. Supplied-air respirator B. Powered air-purifying respirator C. Closed-circuit SCBA D. Open-circuit SCBA - correct answers ✅A. Supplied-air respirator

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A fully encapsulated suit is part of Level _____ protective clothing. A. A B. B C. C D. D - correct answers ✅A. A What foam application method should be used on open-top storage tank fires? A. Bounce-off method B. Rain-down method C. Roll-in method D. Subsurface injection method - correct answers ✅A. Bounce-off method A firefighter is directing a foam stream over an aboveground open-top storage tank, letting the foam gently fall onto the surface of the liquid in the tank. Which foam application method does this describe? A. Bounce-off method B. Roll-in method C. Rain-down method

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D. Aerial method - correct answers ✅C. Rain-down method Which phase of a hazardous materials incident begins when the imminent danger to people, property, and the environment is controlled and clean-up begins? A. Remediation B. Recovery C. Mitigation D. Definitive - correct answers ✅B. Recovery Which foam application method is the least effective when burning fuel is producing a strong thermal column? A. Bounce-off method B. Roll-in method C. Subsurface injection method D. Rain-down method - correct answers ✅D. Rain-down method What term means the placement of material to form a barrier that keeps a hazardous material from entering an unwanted area?

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A. Diking B. Scherring dam C. Retention D. Diversion - correct answers ✅C. Retention Which protective action uses water or another liquid to reduce the concentration of a hazardous material? A. Dispersion B. Adsorption C. Dilution D. Suppression - correct answers ✅C. Dilution Which method of product control results in one material physically adhering to another? A. Absorption B. Dilution C. Adsorption D. Retention - correct answers ✅C. Adsorption