HAZWOPER Technician

Practice Exam

Knowledge Check

Page 1 of 5

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

mechanical

radiological

thermal

chemical

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

activation

autoignition

fuel

oxygen

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

Size-up becomes unnecessary

Increased chaos on scene

Decreased accountability

Effective command and control

4. 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?

Cloud

Plume

Hemispheric

Particulate

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

Exposure justification

A leave of absence

Immediate hospitalization

Exposure records

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

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

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

Mexico has several placards for materials that may be inhaled.

Mexico does not require placards for radioactive materials.

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

destroy

identify

preserve

contain

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

shelter in place.

progress reports.

on-scene debriefing.

evacuation.

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

kPa

psig

Atmospheres

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

all emergency services organizations.

fire and rescue operations.

emergency responders entering the hot zone.

civilian and emergency responder victims.

Page 2 of 5

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

evaporation.

dilution.

chemical degradation.

brushing and scraping.

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

Adsorption

Resorption

Sorption

Absorption

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

Incident Management System (IMS).

Memorandum of Understanding (MOU).

National Response Framework (NRF).

National Incident Management System (NIMS).

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

organ

environmental

external

cellular

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

upwind

downwind

inside

opposite

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

Victims should be instructed to disrobe.

Responders should undergo decon.

Victims should be identified.

Technical decon should be set up.

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

dispersion patterns, rapid release, and detonation.

radioactivity, pressure, and temperature.

wind speed, barometric pressure, and time of day.

energy release, corrosivity, and toxicity.

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

Level D

Level A

Level B

Level C

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

SCBA

IDLH

CPC

APR

20. 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?

Placard

Label

Marking

Four-digit ID number

Page 3 of 5

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

Liquid

RIBC

Nonbulk

FIBC

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

Exposure

Release

Stress

Dispersion

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

multiple compartments.

large bulky double shelling and heavy insulation.

large hemispherical heads on both ends.

black, heat-absorbing paint.

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

decontaminated.

kept away from victims.

isolated.

destroyed.

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

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

apply first aid and return them to an ambulatory state.

package and triage them appropriately.

thoroughly decontaminate them before transferring them to EMS.

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

notify law enforcement.

follow local procedures for emergency decontamination.

sample themselves to determine the contaminant.

set up a decon zone.

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

is most effective in large or complex hazmat incidents.

can guide responders' actions at hazmat incidents.

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

is not effective in large or complex hazmat incidents.

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

gather information and attempt to understand the current situation.

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

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

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

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

Emergency decontamination should be considered at all hazmat incidents.

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

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

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

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

Fuel

Inhibitor

Catalyst

Contamination

Page 4 of 5

31. A Level II incident:

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

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

will most likely not be concluded by any one agency.

does not require the use of chemical protective clothing.

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

the incident is destabilizing.

the IC is no longer needed.

the IAP is effective.

responders should withdraw immediately.

33. 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

Label

Marking

Placard

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

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

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

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

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

EMS personnel will typically wear higher levels of respiratory protection.

EMS PPE includes a sidearm.

EMS personnel must wear ballistic protection.

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

Yellow

Red

Green

Orange

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

Rickettsias

Viruses

Biological toxins

Bacteria

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

Peculiar smells, visible vapor clouds, and radiant heat

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

The conversion of one substance to another

Any erroneous or incomplete placarding or markings

39. Decontamination usually takes place within the:

warm zone.

cold zone.

command zone.

hot zone.

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

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

It provides exposure protection from liquid chemicals.

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

Gases and vapors can permeate the garments.

Page 5 of 5

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

size-up.

hazard assessment.

safety checks.

preincident planning.

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

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

The green highlighted sections of the blue-bordered pages

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

Low pressure

High pressure

Cryogenic

Nonpressure

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

variables to eliminate.

potential ignition sources.

unavoidable risks.

potential site hazards.

45. 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.

sudden gastrointestinal distress.

itching, scratching, and bloody skin lesions.

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

temperature and wind conditions.

the urgency in removing the victim from the contaminated environment.

the local terrain and available waterways.

how much media coverage is involved.

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

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

Consistent temperatures

A sudden change in pressure

Black smoke

Alarm sounding on a photoionization detector.

49. A highway vehicle without a placard:

should be stopped and inspected for terrorist activity.

may still be carrying hazardous materials.

will NOT be carrying hazardous materials.

is illegal.

50. What type of incident requires unified command?

Level I

Level II

Level IV

Level III

HAZWOPER Technician

Practice Exam

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