HAZWOPER Technician

Practice Exam

Knowledge Check

Page 1 of 5

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

kept away from victims.

destroyed.

isolated.

decontaminated.

2. A Level II incident:

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

does not require the use of chemical protective clothing.

will most likely not be concluded by any one agency.

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

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

Red

Green

Yellow

Orange

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

Marking

Label

Placard

Four-digit ID number

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

Any erroneous or incomplete placarding or markings

The conversion of one substance to another

Peculiar smells, visible vapor clouds, and radiant heat

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

6. 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.

temperature and wind conditions.

how much media coverage is involved.

the local terrain and available waterways.

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

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

set up a decon zone.

follow local procedures for emergency decontamination.

notify law enforcement.

sample themselves to determine the contaminant.

9. Decontamination usually takes place within the:

warm zone.

command zone.

hot zone.

cold zone.

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

Biological toxins

Viruses

Rickettsias

Bacteria

Page 2 of 5

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

Dispersion

Release

Exposure

Stress

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

energy release, corrosivity, and toxicity.

radioactivity, pressure, and temperature.

wind speed, barometric pressure, and time of day.

dispersion patterns, rapid release, and detonation.

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

The Table of Initial Isolation and Protective Action Distances

The green highlighted sections of the blue-bordered pages

The ID Guide in the yellow-bordered pages

The Public Safety Section in the orange-bordered pages

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

Consistent temperatures

Alarm sounding on a photoionization detector.

Black smoke

A sudden change in pressure

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

Effective command and control

Size-up becomes unnecessary

Increased chaos on scene

Decreased accountability

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

Sorption

Adsorption

Resorption

Absorption

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

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

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.

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

brushing and scraping.

chemical degradation.

dilution.

evaporation.

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

identify

preserve

contain

destroy

20. What type of incident requires unified command?

Level II

Level IV

Level III

Level I

Page 3 of 5

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

chemical

thermal

mechanical

radiological

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

the incident is destabilizing.

the IAP is effective.

responders should withdraw immediately.

the IC is no longer needed.

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

Immediate hospitalization

Exposure justification

A leave of absence

Exposure records

24. 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?

Hemispheric

Particulate

Cloud

Plume

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

Cryogenic

Low pressure

Nonpressure

High pressure

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

black, heat-absorbing paint.

multiple compartments.

large hemispherical heads on both ends.

large bulky double shelling and heavy insulation.

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

potential site hazards.

unavoidable risks.

potential ignition sources.

variables to eliminate.

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

civilian and emergency responder victims.

fire and rescue operations.

all emergency services organizations.

emergency responders entering the hot zone.

29. 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 C

Level A

Level D

30. 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

Placard

Label

Marking

Page 4 of 5

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

National Incident Management System (NIMS).

Incident Management System (IMS).

Memorandum of Understanding (MOU).

National Response Framework (NRF).

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

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.

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.

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

EMS PPE includes a sidearm.

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

EMS personnel will typically wear higher levels of respiratory protection.

EMS personnel must wear ballistic protection.

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

Atmospheres

kPa

psig

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

can guide responders' actions at hazmat incidents.

is most effective in large or complex hazmat incidents.

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

is not effective in large or complex hazmat incidents.

36. A highway vehicle without a placard:

will NOT be carrying hazardous materials.

may still be carrying hazardous materials.

should be stopped and inspected for terrorist activity.

is illegal.

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

apply first aid and return them to an ambulatory state.

thoroughly decontaminate them before transferring them to EMS.

package and triage them appropriately.

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

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

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

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.

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

environmental

organ

external

cellular

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

Technical decon should be set up.

Victims should be identified.

Responders should undergo decon.

Victims should be instructed to disrobe.

Page 5 of 5

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

opposite

downwind

inside

upwind

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

Contamination

Inhibitor

Catalyst

Fuel

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

immediate symptoms such as coughing and throat irritations.

sudden gastrointestinal distress.

itching, scratching, and bloody skin lesions.

delayed symptoms that include pulmonary edema and coughing up blood.

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

preincident planning.

size-up.

safety checks.

hazard assessment.

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

activation

fuel

oxygen

autoignition

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

IDLH

APR

SCBA

CPC

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

FIBC

Nonbulk

Liquid

RIBC

48. 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 necessary for anyone exposed to a hazardous material.

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

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

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

evacuation.

on-scene debriefing.

progress reports.

shelter in place.

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

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

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

Gases and vapors can permeate the garments.

It provides exposure protection from liquid chemicals.

HAZWOPER Technician

Practice Exam

Quick Links

Useful Links