HAZWOPER Technician

Practice Exam

Knowledge Check

Page 1 of 5

1. What is the first step in the sequence proposed by the General Hazardous Materials Behavior Model (GEBMO)?

Stress

Exposure

Dispersion

Release

2. The decontamination site should be situated _____ of the hot zone.

upwind

downwind

inside

opposite

3. Which statement about structural firefighters' protective clothing is accurate?

It provides exposure protection from liquid chemicals.

Gaps in structural fire fighting clothing only occur at the wrists and waist.

Although some hazardous materials can permeate structural fire fighting clothing, the material will quickly dissipate.

Gases and vapors can permeate the garments.

4. What type of containers are flexible, collapsible bags or sacks, and also called bulk bags, bulk sacks, or tote bags?

Nonbulk

FIBC

Liquid

RIBC

5. The technical decontamination process that uses a material to change the chemical structure of a hazardous material is:

evaporation.

dilution.

brushing and scraping.

chemical degradation.

6. Vapor protective clothing is usually part of what level of protection?

7. Assessing the incident's conditions to recognize cues that indicate problems or potential problems is called:

safety checks.

preincident planning.

hazard assessment.

size-up.

8. Under ANSI Z535.1, what color means Warning?

Yellow

Orange

Green

Red

9. If an IC receives favorable progress reports from tactical and/or task supervisors, this is an indication that:

the IAP is effective.

the IC is no longer needed.

the incident is destabilizing.

responders should withdraw immediately.

10. Which cargo tank truck almost always carries flammable/combustible liquids such as gasoline, fuel oil, or alcohol?

Cryogenic

Nonpressure

Low pressure

High pressure

Page 2 of 5

11. Partially water-soluble chemicals will penetrate into the lower respiratory system and cause:

immediate symptoms such as coughing and throat irritations.

delayed symptoms that include pulmonary edema and coughing up blood.

itching, scratching, and bloody skin lesions.

sudden gastrointestinal distress.

12. Which of the following BEST describes physical processes of materials?

Any erroneous or incomplete placarding or markings

Processes that do NOT change the elemental composition of materials involved.

Peculiar smells, visible vapor clouds, and radiant heat

The conversion of one substance to another

13. The aim of technical decon for nonambulatory victims is to:

package and triage them appropriately.

make sure they understand the delayed health risks of the hazardous material.

apply first aid and return them to an ambulatory state.

thoroughly decontaminate them before transferring them to EMS.

14. The reducing agent in the fire tetrahedron acts as the _____ source for the reaction.

activation

autoignition

oxygen

fuel

15. Which of the following is a 3.9-inch (100 mm) square-on-point diamond that identifies hazardous materials within packaging?

Four-digit ID number

Marking

Label

Placard

16. In Step 4 of the APIE process, responders:

perform tasks determined in the planning stage and direct actions to mitigate the incident.

monitor progress to see whether the response plan is working and continue throughout the incident.

gather information and attempt to understand the current situation.

use the information gathered to determine what actions need to be taken to mitigate the incident.

17. A Level II incident:

is beyond the capabilities of the first responders on the scene.

requires resources from state/provincial agencies, federal agencies, and/or private industry.

will most likely not be concluded by any one agency.

does not require the use of chemical protective clothing.

18. MC-331 cargo tanks typically have bolted manways, inlet and outlet valves, and:

large hemispherical heads on both ends.

large bulky double shelling and heavy insulation.

black, heat-absorbing paint.

multiple compartments.

19. A written agreement defining roles and responsibilities within a Unified Command structure is known as a(an):

National Incident Management System (NIMS).

Memorandum of Understanding (MOU).

National Response Framework (NRF).

Incident Management System (IMS).

20. The damaging effects of ionizing radiation occur at the _____ level.

organ

cellular

external

environmental

Page 3 of 5

21. If a first responder becomes contaminated before realizing the situation, they should immediately withdraw and:

notify law enforcement.

set up a decon zone.

follow local procedures for emergency decontamination.

sample themselves to determine the contaminant.

22. In Step 1 of the APIE process, responders:

perform tasks determined in the planning stage and direct actions to mitigate the incident.

monitor progress to see whether the response plan is working and continue throughout the incident.

gather information and attempt to understand the current situation.

use the information gathered to determine what actions need to be taken to mitigate the incident.

23. Which type of respirator can remove vapor and gas?

CPC

APR

SCBA

IDLH

24. The decision of whether to perform emergency or technical decon is determined based on the hazardous material involved and:

the urgency in removing the victim from the contaminated environment.

the local terrain and available waterways.

how much media coverage is involved.

temperature and wind conditions.

25. The three mechanisms of harm in a container hazardous materials incident are:

energy release, corrosivity, and toxicity.

radioactivity, pressure, and temperature.

dispersion patterns, rapid release, and detonation.

wind speed, barometric pressure, and time of day.

26. A highway vehicle without a placard:

may still be carrying hazardous materials.

is illegal.

will NOT be carrying hazardous materials.

should be stopped and inspected for terrorist activity.

27. Overhead power lines, highway traffic, and rail lines are examples of:

potential ignition sources.

unavoidable risks.

variables to eliminate.

potential site hazards.

28. When protecting the public at an incident, if there is enough time, the best protective action generally is:

progress reports.

on-scene debriefing.

shelter in place.

evacuation.

29. Which of the following is a descriptive name, identification number, weight, or specification that includes instructions, cautions, or U.N. marks, and is required on outer packaging of hazardous materials?

Four-digit ID number

Marking

Placard

Label

30. What is the process in which a hazardous liquid interacts with (or is bound to) the surface of a sorbent material?

Sorption

Resorption

Adsorption

Absorption

Page 4 of 5

31. The APIE process is a simple 4-step response model that:

is required to be used at all North American hazmat incidents.

is not effective in large or complex hazmat incidents.

can guide responders' actions at hazmat incidents.

is most effective in large or complex hazmat incidents.

32. The basic principles of decon are get it off, keep it off, and _____ it.

destroy

identify

preserve

contain

33. The three incident priorities at all hazardous materials incidents apply to:

emergency responders entering the hot zone.

fire and rescue operations.

civilian and emergency responder victims.

all emergency services organizations.

34. Which level of PPE is only used when the specific material is known and has been measured, and the atmosphere is not IDLH?

Level B

Level A

Level D

Level C

35. One difference between Mexican and U.S. placard, label, and marking systems is that:

Mexico does not require placards for radioactive materials.

the Mexican system has several fewer hazard classes than the U.S. system.

Mexico has several placards for materials that may be inhaled.

information provided on Mexican labels and markings is likely to be in Spanish.

36. Where would you find information on protective clothing and respiratory protection recommendations?

The green highlighted sections of the blue-bordered pages

The ID Guide in the yellow-bordered pages

The Table of Initial Isolation and Protective Action Distances

The Public Safety Section in the orange-bordered pages

37. Which of the following is an indicator to withdraw immediately?

Consistent temperatures

Alarm sounding on a photoionization detector.

A sudden change in pressure

Black smoke

38. Which of the following statements about determining the need for emergency decontamination at an incident is MOST accurate?

Emergency decontamination includes the transfer of a hazardous material in greater than acceptable quantities.

Emergency decontamination should be considered at all hazmat incidents.

Emergency decontamination is necessary for anyone exposed to a hazardous material.

Emergency decontamination is the sudden failure of personal protective equipment or clothing.

39. What will increase the rate of polymerization and decrease the activation energy necessary for further polymerization?

Contamination

Inhibitor

Fuel

Catalyst

40. What is required for all first responders who have been exposed or potentially exposed to hazardous materials?

A leave of absence

Exposure records

Exposure justification

Immediate hospitalization

Page 5 of 5

41. What type of dispersion pattern forms an irregularly shaped pattern of an airborne hazardous material where wind and/or topography influence the downrange course from the point of release?

Plume

Cloud

Hemispheric

Particulate

42. Decontamination usually takes place within the:

command zone.

hot zone.

cold zone.

warm zone.

43. Which type of biological/etiological hazard spreads mostly through the bite of infected arthropods?

Bacteria

Rickettsias

Biological toxins

Viruses

44. What is a likely result of following predetermined procedures at emergency incidents?

Decreased accountability

Increased chaos on scene

Size-up becomes unnecessary

Effective command and control

45. What should happen before entry personnel enter the hot zone?

Technical decon should be set up.

Victims should be identified.

Victims should be instructed to disrobe.

Responders should undergo decon.

46. What type of incident requires unified command?

Level II

Level IV

Level III

Level I

47. Which of the following BEST describes a unit of pressure relative to the surrounding atmosphere?

kPa

Atmospheres

psig

48. If service canines are brought into the hot zone, they must be:

isolated.

decontaminated.

kept away from victims.

destroyed.

49. Collision, impact, or internal overpressure are common causes of damage to a container caused by _____ energy.

chemical

thermal

radiological

mechanical

50. How do EMS ensembles differ from fire service first responders?

EMS PPE includes a sidearm.

EMS personnel must wear ballistic protection.

EMS personnel will typically wear higher levels of respiratory protection.

EMS PPE must provide blood- and body-fluid pathogen barrier protection.

HAZWOPER Technician

Practice Exam

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