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HAZMAT Exam Study Guide Questions and Answers, Exams of Engineering

Texas A & M University - TexarkanaEngineering

This study guide provides a comprehensive set of questions and answers covering key concepts related to hazardous materials response. It covers topics such as control zones, personal protective equipment, size-up, isolation perimeters, incident levels, decontamination, shelter-in-place, heat exhaustion, hypothermia, terrorism, radiation exposure, chemical protective clothing, and more. The guide is designed to help students prepare for exams and gain a deeper understanding of hazardous materials safety and response procedures.

Typology: Exams

2024/2025

Available from 02/13/2025

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HAZMAT EXAM STUDY GUIDE QUESTIONS WITH THE BEST
ANSWERS.
1) At a hazardous materials incident, what are the hot, warm, and cold zones? --
Answer โœ”โœ” Control zones
2) For hazardous materials responders, what is the most important element of
personal protective equipment? -- Answer โœ”โœ” Respiratory protection
3) Which term refers to assessing what is happening at the scene and then using that
information to devise a plan of action? -- Answer โœ”โœ” Size-up
4) What is the purpose of an isolation perimeter? -- Answer โœ”โœ” To prevent access
by unauthorized personnel into the emergency scene
5) A gasoline tanker has overturned in a tunnel and is spilling gasoline onto the
highway. What level of hazardous materials incident is this? -- Answer โœ”โœ” Level II
6) Which control zone immediately surrounds the contaminated area? -- Answer โœ”โœ”
Hot
7) In general, a hazardous material in which state of matter will usually require the
largest hot zone? -- Answer โœ”โœ” Gas
8) Which function should occur in the warm zone? -- Answer โœ”โœ” Decontamination
corridor
9) Which function should occur in the cold zone? -- Answer โœ”โœ” personnel staging
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HAZMAT EXAM STUDY GUIDE QUESTIONS WITH THE BEST

ANSWERS.

  1. At a hazardous materials incident, what are the hot, warm, and cold zones? -- Answer โœ”โœ” Control zones
  2. For hazardous materials responders, what is the most important element of personal protective equipment? -- Answer โœ”โœ” Respiratory protection
  3. Which term refers to assessing what is happening at the scene and then using that information to devise a plan of action? -- Answer โœ”โœ” Size-up
  4. What is the purpose of an isolation perimeter? -- Answer โœ”โœ” To prevent access by unauthorized personnel into the emergency scene
  5. A gasoline tanker has overturned in a tunnel and is spilling gasoline onto the highway. What level of hazardous materials incident is this? -- Answer โœ”โœ” Level II
  6. Which control zone immediately surrounds the contaminated area? -- Answer โœ”โœ” Hot
  7. In general, a hazardous material in which state of matter will usually require the largest hot zone? -- Answer โœ”โœ” Gas
  8. Which function should occur in the warm zone? -- Answer โœ”โœ” Decontamination corridor
  9. Which function should occur in the cold zone? -- Answer โœ”โœ” personnel staging
  1. Which of the following refers to when a responder protects people from a hazardous materials incident by keeping them in a safe atmosphere without evacuating them? -- Answer โœ”โœ” Shelter-in-place
  2. When people are being sheltered-in-place, what should be done with the ventilation system? -- Answer โœ”โœ” It should be turned off
  3. Weakness, dizziness, and sweating are typical of heat: -- Answer โœ”โœ” exhaustion
  4. Which of the following is a recommended treatment for heat exhaustion? -- Answer โœ”โœ” Remove the patient from the heat source
  5. What term refers to when a person's internal body temperature falls below 95ยบF? -
  • Answer โœ”โœ” hypothermia
  1. What is the first priority on any hazardous material incident? -- Answer โœ”โœ” Life safety
  2. Part of the definition of terrorism requires that such activity: -- Answer โœ”โœ” be in furtherance of political or social objectives.
  3. Terrorists have used explosive devices in thousands of attacks, but in recent years there has been a new trend in their use. What is this trend? -- Answer โœ”โœ” Suicide bombings
  4. What is the term for terrorism that electronically targets computers or the Internet? -- Answer โœ”โœ” Cyberterrorism
  5. When responding to a terrorist event, you should be particularly alert for the possibility of: -- Answer โœ”โœ” secondary events designed to harm or hamper emergency responders.
  6. Under what circumstances are alpha particles the most harmful to the human body? -- Answer โœ”โœ” When they are ingested or inhaled
  1. What is the process by which a hazardous chemical flows through closures, seams, or pinholes in a material? -- Answer โœ”โœ” Penetration
  2. What is one drawback of vapor-protective clothing? -- Answer โœ”โœ” It retains the wearer's body heat
  3. When atmospheric conditions at a hazardous materials incident are unknown, what is the minimum level of respiratory protection for operations level responders? -- Answer โœ”โœ” Positive pressure SCBA
  4. What distinguishes Level B from Level C protection? -- Answer โœ”โœ” Respiratory protection
  5. What is the primary role of the medical monitoring station? -- Answer โœ”โœ” To evaluate the medical status of personnel engaged in operations
  6. What is it called when there is not enough fuel in a fuel/air mixture? -- Answer โœ”โœ” Too lean
  7. __________ is to liquids as vapor density is to gases. -- Answer โœ”โœ” Specific gravity
  8. Corrosives can be broken down into: -- Answer โœ”โœ” Acids & bases
  9. When the letters LD or LC are followed by a number, what does that number indicate? -- Answer โœ”โœ” The percentage of test subjects that will die when exposed to a specified amount
  10. What is the temperature at which a liquid continuously gives off vapors? -- Answer โœ”โœ” Boiling point
  11. What is the temperature at which a flammable liquid will ignite without the need for an external ignition source? -- Answer โœ”โœ” Ignition temperature
  1. What quantity is the weight of a liquid as compared to an equal volume of water? -- Answer โœ”โœ” Specific gravity
  2. ________ identifies the hazard as a liquid, solid, or gas. -- Answer โœ”โœ” State of matter
  3. What is the term for a catastrophic failure of a pressurized cylinder of liquid? -- Answer โœ”โœ” BLEVE
  4. 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? -- Answer โœ”โœ” Flash point
  5. What is the temperature at which sustained combustion will occur? -- Answer โœ”โœ” Fire point
  6. Which term refers to the concentration of a gas or vapor in air that will burn if provided with a source of ignition? -- Answer โœ”โœ” Flammable range
  7. What is the term for the pressure exerted by the vapor of a liquid until the vapor and the liquid are in equilibrium? -- Answer โœ”โœ” Vapor pressure
  8. What is the term for the ability of a substance to dissolve in water? -- Answer โœ”โœ” Water solubility
  9. What is used as a measurement of the corrosive strength of a substance? -- Answer โœ”โœ” pH
  10. What is the term for the process by which people, animals, the environment, and equipment are subjected to contact with a hazardous material? -- Answer โœ”โœ” Exposure
  11. If a victim is twitching, what agent would you suspect he or she has been exposed to? -- Answer โœ”โœ” Nerve
  1. What is the term for an engineered catch basin around a 5000-gallon liquid container that is designed to contain product if the container fails? -- Answer โœ”โœ” Secondary containment
  2. Closed-head drums have a permanently attached lid with one or more small openings. What are these small openings called? -- Answer โœ”โœ” Bungs
  3. How is the lid on an open-head drum fastened? -- Answer โœ”โœ” By a ring and tightening hardware
  4. What is the term for gaseous substances that have been chilled until they liquefy? -- Answer โœ”โœ” Cryogen
  5. What do Dewar containers hold? -- Answer โœ”โœ” Cryogenic liquids
  6. What is the approximate maximum capacity of a rail tank car, in gallons? -- Answer โœ”โœ” 30,
  7. Which type of railcar design should a fire fighter be able to identify? -- Answer โœ”โœ” Special use
  8. What is the function of a Dewar container? -- Answer โœ”โœ” To keep contents cold
  9. Which is an identifying characteristic of pressurized horizontal tanks? -- Answer โœ”โœ” Rounded ends
  10. What is the name of the bulk storage vessel, described as a portable plastic tank surrounded by a stainless steel web, that can hold a few hundred gallons? -- Answer โœ”โœ” Tote
  11. What does MC-306 refer to? -- Answer โœ”โœ” The familiar oval-shaped highway gasoline tanker
  1. What material is most likely to be transported in a highway tanker that is narrower than most tankers and has several reinforcing rings around the circumference? -- Answer โœ”โœ” Concentrated sulfuric acid
  2. What do tube trailers carry? -- Answer โœ”โœ” Compressed gas
  3. What is the DOT hazard class for toxic substances? -- Answer โœ”โœ” 6
  4. What is a significant drawback to using the senses to detect the presence of hazardous materials? -- Answer โœ”โœ” Their use involves potential exposure to the hazard.
  5. What signal word indicates that the material is highly toxic by all routes of entry? -- Answer โœ”โœ” Danger - poison
  6. What signal word indicates the material may cause severe eye damage or skin irritation? -- Answer โœ”โœ” Danger
  7. What signal word indicates the material is moderately toxic? -- Answer โœ”โœ” Warning
  8. What is the most common method of transporting hazardous materials? -- Answer โœ”โœ” Road
  9. What tanker is used to transport ammonia, butane, or propane? -- Answer โœ”โœ” MC- 331
  10. What tanker is used to transport cryogenic materials? -- Answer โœ”โœ” MC- 338
  11. Pipeline warning signs include a warning symbol, the pipeline owner's name, and an: -- Answer โœ”โœ” emergency contact number
  12. Where must placards be located on highway transport vehicles, rail cars, and other forms of transportation carrying hazardous materials? -- Answer โœ”โœ” All four sides
  1. What section of the Emergency Response Guidebook would a fire fighter use when he or she knows the chemical identification number of the hazardous material? -- Answer โœ”โœ” Yellow
  2. Which section of the Emergency Response Guidebook would a fire fighter use when he or she knows the chemical name of the hazardous material? -- Answer โœ”โœ” Blue
  3. Which section of the Emergency Response Guidebook contains the Table of Initial Isolation and Protective Action Distances? -- Answer โœ”โœ” Green
  4. When choosing a route along which to respond to a reported hazardous materials incident, how should the approach be planned? -- Answer โœ”โœ” From upwind and upgrade
  5. On which type of hazardous materials incident should early responders establish a plan for decontamination? -- Answer โœ”โœ” On all incidents
  6. Which is a critical factor in determining the appropriate level of PPE? -- Answer โœ”โœ” The physical state and characteristics of the material
  7. What is a defensive action? -- Answer โœ”โœ” diking
  8. What function should occur in the warm zone? -- Answer โœ”โœ” Decontamination corridor
  9. What is the first priority on any hazardous material incident? -- Answer โœ”โœ” Safety of responders
  10. What can be used to determine the pH of a hazardous material? -- Answer โœ”โœ” Litmus paper
  11. What Threshold Limit Value sets a maximum concentration above which no exposure of any duration should be permitted? -- Answer โœ”โœ” Ceiling
  1. In the yellow and blue-bordered sections of the ERG, how are materials that are included in the Table of Initial Isolation and Protective Distances identified? -- Answer โœ”โœ” They are highlighted
  2. Materials are listed in the green section of the ERG because of their: -- Answer โœ”โœ” Toxicity
  3. In the ERG, the Initial Isolation and Protective Action Distances are found on pages that have __________ borders. -- Answer โœ”โœ” Green
  4. As it applies to hazardous materials response strategy, what does the term "isolation" mean? -- Answer โœ”โœ” Keeping responders and the public a safe distance away from the hazard
  5. What is the most effective way to maintain the security of an isolation perimeter? -- Answer โœ”โœ” Posting security personnel
  6. If it is necessary to isolate a hazardous materials incident, it will also be necessary to: -- Answer โœ”โœ” deny entry
  7. Relocation of people who are threatened by a potential hazard is called: -- Answer โœ”โœ” Evacuation
  8. How can a thermal imaging camera be useful at a hazardous materials spill? -- Answer โœ”โœ” To indicate the level of material remaining in a container
  9. Diversion of material is an example of which mode of operation? -- Answer โœ”โœ” Defensive
  10. Dilution of material is an example of which mode of operation? -- Answer โœ”โœ” Defensive
  11. For which situation will structural firefighting protective clothing provide you with adequate protection? a. You will be exposed to splashes of the material.
  1. How can you check the compatibility of a particular chemical-protective suit with a specific material? -- Answer โœ”โœ” Check the compatibility chart supplied by the manufacturer.
  2. Which is one of the major categories of decontamination? -- Answer โœ”โœ” Technical
  3. Which form of decontamination is the most thorough? -- Answer โœ”โœ” Technical
  4. Mass decontamination is a way of performing ________ decontamination quickly on a large number of victims at a hazardous materials incident. -- Answer โœ”โœ” gross
  5. How should contaminated tools and equipment be contained? -- Answer โœ”โœ” In bags, barrels, or buckets
  6. Which method of decontamination should never be used for personnel decontamination? -- Answer โœ”โœ” Neutralization
  7. What is one reason that identification of the hazardous material should precede the initiation of any decontamination procedures? -- Answer โœ”โœ” Some materials are water reactive and may require special decontamination procedures.
  8. What is the major difference between emergency decontamination and gross decontamination? -- Answer โœ”โœ” The location where the decontamination procedure is performed
  9. When is technical decontamination performed relative to gross decontamination? -- Answer โœ”โœ” After
  10. What are the two procedures of gross decontamination? -- Answer โœ”โœ” Removing outer clothing and continuous shower of water
  11. Mass decontamination is the process of: -- Answer โœ”โœ” performing gross decontamination on a large number of people at one time.
  1. In what control zone is the decontamination corridor established? -- Answer โœ”โœ” Warm
  2. Where are you are likely to encounter an NFPA 704 symbol? -- Answer โœ”โœ” industrial complex
  3. You are called to investigate an unusual odor. Upon arrival you find a house with a secure fence, an alarm system, and blacked-out windows. What do these clues indicate? -- Answer โœ”โœ” Illicit laboratory
  4. Careful observation of the signs and symptoms of victim exposed to a WMD agent may provide you with insight into the: -- Answer โœ”โœ” specific agent involved
  5. What is a confinement tactic? -- Answer โœ”โœ” diking
  6. Which is a containment tactic? -- Answer โœ”โœ” plugging
  7. In a hazardous materials situation that is dangerous and unstable and responders cannot be properly protected, what action is important and appropriate? -- Answer โœ”โœ” Withdraw to a safe distance.
  8. How does a spill boom control a hazardous material? -- Answer โœ”โœ” It forms a barrier to the movement of the material.
  9. What type of dam should be constructed for a material that has a specific gravity greater than 1? -- Answer โœ”โœ” Overflow
  10. Which type of dam is used to contain materials lighter than water? -- Answer โœ”โœ” Underflow
  11. Which protective action uses water or another liquid to reduce the concentration of a hazardous material? -- Answer โœ”โœ” Dilution
  12. What is the first step in dike construction? -- Answer โœ”โœ” Determine which diking material will be compatible with the spilled material.
  1. In which method of foam application is a bank of foam formed on the ground in front of the flammable liquid pool and pushed over the pool by the continued application of foam? -- Answer โœ”โœ” Roll-in method
  2. Which foam application method is particularly well suited to transport vehicle accidents? -- Answer โœ”โœ” Bounce-off method
  3. An aboveground storage tank has leaked flammable liquid into the surrounding diked containment area. A foam stream is directed against the side of the tank. Foam is running down the side of the tank and covering the spilled fuel in the containment area. Which foam application method does this describe? -- Answer โœ”โœ” Bounce-off method
  4. An organic substance is one that: -- Answer โœ”โœ” contains carbon
  5. What is the term for compounds that are capable of vaporizing into the atmosphere under normal environmental conditions? -- Answer โœ”โœ” volatile organic compounds
  6. Which instrument gives real-time measurements of organic vapors or mists in very low concentrations? -- Answer โœ”โœ” Photo-ionization detector
  7. Which device is designed solely to detect flammable or explosive atmospheres? -- Answer โœ”โœ” Combustible gas indicator
  8. A __________ is a versatile detection device typically equipped with a combination of toxic gas sensors and the ability to detect flammable gases and vapors. -- Answer โœ”โœ” multi-gas meter
  9. This detection device is dipped into an unknown liquid, allowing the chemical to come into contact with several small "windows," each with specific reagents designed to identify the presence of different chemical classifications. -- Answer โœ”โœ” chemical test strip
  10. Which statement about detection/monitoring devices is correct? -- Answer โœ”โœ” Misinterpreted monitor readings can result in poor decisions.
  1. What is the term for observing and understanding the visual cues available and using that information to orient yourself and make rapid decisions about your current situation? -- Answer โœ”โœ” Situational awareness
  2. Of the 10 basic rules for detection and monitoring, which comes first? -- Answer โœ”โœ” Attempt to identify the source and nature of potential contamination prior to entry.
  3. A gas monitor is sampling a combustible gas for which it has not been calibrated. What statement about this situation is correct? -- Answer โœ”โœ” Accurate readings can be obtained through the use of a correction factor.
  4. When performing atmospheric monitoring of a building, where should you start? -- Answer โœ”โœ” Around the outside of a building
  5. Most combustible-gas indicators begin to alarm when the concentration of combustible gas reaches what level? -- Answer โœ”โœ” 10% of the LEL/LFL
  6. The U.S. Department of Transportation's definition of hazardous materials specifies three entities against which a hazardous material poses an unreasonable risk. What is one of these entities? -- Answer โœ”โœ” The environment
  7. Which NFPA standard addresses competencies for hazardous materials/WMD responders? -- Answer โœ”โœ” 472
  8. What is the acronym for the OSHA federal document containing hazardous materials response competencies? -- Answer โœ”โœ” HAZWOPER
  9. What statement best describes the correct perspective to take at a hazardous materials/WMD incident? -- Answer โœ”โœ” Slow down and think before you act.
  10. What level of hazardous materials training enables first responders to recognize a potential hazardous materials emergency, protect themselves, isolate the area, and call for assistance? -- Answer โœ”โœ” Awareness