HAZWOPER Technician

Practice Exam

Knowledge Check

Page 1 of 5

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

upwind

opposite

downwind

inside

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

Consistent temperatures

A sudden change in pressure

Alarm sounding on a photoionization detector.

Black smoke

3. 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.

the local terrain and available waterways.

how much media coverage is involved.

4. Decontamination usually takes place within the:

command zone.

cold zone.

warm zone.

hot zone.

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

thermal

chemical

radiological

mechanical

6. A Level II incident:

does not require the use of chemical protective clothing.

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.

7. A highway vehicle without a placard:

may still be carrying hazardous materials.

should be stopped and inspected for terrorist activity.

is illegal.

will NOT be carrying hazardous materials.

8. 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.

Mexico does not require placards for radioactive materials.

Mexico has several placards for materials that may be inhaled.

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

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

thoroughly decontaminate them before transferring them to EMS.

package and triage them appropriately.

apply first aid and return them to an ambulatory state.

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

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

decontaminated.

isolated.

kept away from victims.

destroyed.

Page 2 of 5

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

SCBA

APR

IDLH

CPC

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

Low pressure

Cryogenic

High pressure

Nonpressure

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

follow local procedures for emergency decontamination.

set up a decon zone.

notify law enforcement.

sample themselves to determine the contaminant.

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

Technical decon should be set up.

Victims should be instructed to disrobe.

Victims should be identified.

Responders should undergo decon.

15. 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

16. 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.

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

itching, scratching, and bloody skin lesions.

delayed symptoms that include pulmonary edema and coughing up blood.

immediate symptoms such as coughing and throat irritations.

sudden gastrointestinal distress.

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

19. 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.

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.

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

Decreased accountability

Size-up becomes unnecessary

Effective command and control

Increased chaos on scene

Page 3 of 5

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

potential site hazards.

potential ignition sources.

variables to eliminate.

unavoidable risks.

22. 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

Hemispheric

Particulate

Cloud

23. What type of incident requires unified command?

Level IV

Level I

Level III

Level II

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

The conversion of one substance to another

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

Peculiar smells, visible vapor clouds, and radiant heat

Any erroneous or incomplete placarding or markings

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

on-scene debriefing.

evacuation.

shelter in place.

progress reports.

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

EMS personnel must wear ballistic protection.

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.

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

The Table of Initial Isolation and Protective Action Distances

The Public Safety Section in the orange-bordered pages

The ID Guide in the yellow-bordered pages

The green highlighted sections of the blue-bordered pages

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

Yellow

Green

Orange

Red

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

Dispersion

Stress

Exposure

Release

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

safety checks.

hazard assessment.

preincident planning.

size-up.

Page 4 of 5

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

large bulky double shelling and heavy insulation.

black, heat-absorbing paint.

multiple compartments.

large hemispherical heads on both ends.

32. 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

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

Fuel

Contamination

Catalyst

Inhibitor

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

destroy

preserve

identify

contain

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

Rickettsias

Biological toxins

Viruses

Bacteria

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

civilian and emergency responder victims.

all emergency services organizations.

emergency responders entering the hot zone.

fire and rescue operations.

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

Immediate hospitalization

A leave of absence

Exposure justification

Exposure records

38. 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.

Gases and vapors can permeate the garments.

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

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

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.

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

gather information and attempt to understand the current situation.

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

environmental

cellular

organ

external

Page 5 of 5

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

Label

Four-digit ID number

Marking

Placard

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

brushing and scraping.

dilution.

evaporation.

chemical degradation.

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

radioactivity, pressure, and temperature.

energy release, corrosivity, and toxicity.

dispersion patterns, rapid release, and detonation.

wind speed, barometric pressure, and time of day.

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

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

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.

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

Incident Management System (IMS).

National Incident Management System (NIMS).

Memorandum of Understanding (MOU).

National Response Framework (NRF).

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

kPa

psig

Atmospheres

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

activation

oxygen

autoignition

fuel

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

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.

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

49. 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

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

RIBC

Nonbulk

Liquid

FIBC

HAZWOPER Technician

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