HAZWOPER Technician

Practice Exam

Knowledge Check

Page 1 of 5

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

energy release, corrosivity, and toxicity.

wind speed, barometric pressure, and time of day.

dispersion patterns, rapid release, and detonation.

radioactivity, pressure, and temperature.

2. 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 green highlighted sections of the blue-bordered pages

The ID Guide in the yellow-bordered pages

3. 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 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.

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

kPa

Atmospheres

psig

5. 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

Label

Placard

6. 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.

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

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.

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

8. What type of incident requires unified command?

Level II

Level IV

Level I

Level III

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

itching, scratching, and bloody skin lesions.

sudden gastrointestinal distress.

delayed symptoms that include pulmonary edema and coughing up blood.

immediate symptoms such as coughing and throat irritations.

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

identify

contain

destroy

preserve

Page 2 of 5

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

unavoidable risks.

potential site hazards.

variables to eliminate.

potential ignition sources.

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

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

Victims should be instructed to disrobe.

Victims should be identified.

Technical decon should be set up.

Responders should undergo decon.

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

civilian and emergency responder victims.

all emergency services organizations.

fire and rescue operations.

emergency responders entering the hot zone.

15. 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

16. 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 C

Level B

Level A

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

Placard

Marking

Label

Four-digit ID number

18. 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.

will most likely not be concluded by any one agency.

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

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

on-scene debriefing.

progress reports.

evacuation.

shelter in place.

20. 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.

is most effective in large or complex hazmat incidents.

can guide responders' actions at hazmat incidents.

Page 3 of 5

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

IDLH

CPC

SCBA

APR

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

sample themselves to determine the contaminant.

set up a decon zone.

follow local procedures for emergency decontamination.

notify law enforcement.

23. 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.

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

size-up.

preincident planning.

hazard assessment.

safety checks.

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

Bacteria

Rickettsias

Biological toxins

Viruses

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

opposite

downwind

upwind

inside

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

Inhibitor

Catalyst

Fuel

Contamination

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

Cryogenic

Nonpressure

High pressure

Low pressure

29. A highway vehicle without a placard:

will NOT be carrying hazardous materials.

is illegal.

may still be carrying hazardous materials.

should be stopped and inspected for terrorist activity.

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

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

EMS PPE includes a sidearm.

EMS personnel must wear ballistic protection.

EMS personnel will typically wear higher levels of respiratory protection.

Page 4 of 5

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

isolated.

decontaminated.

destroyed.

kept away from victims.

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

Effective command and control

Decreased accountability

Increased chaos on scene

Size-up becomes unnecessary

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

Nonbulk

FIBC

RIBC

Liquid

34. 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

35. 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.

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

black, heat-absorbing paint.

large hemispherical heads on both ends.

multiple compartments.

large bulky double shelling and heavy insulation.

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

A sudden change in pressure

Black smoke

Consistent temperatures

Alarm sounding on a photoionization detector.

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

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

The conversion of one substance to another

Peculiar smells, visible vapor clouds, and radiant heat

Any erroneous or incomplete placarding or markings

39. 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.

the IC is no longer needed.

responders should withdraw immediately.

40. 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.

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.

Page 5 of 5

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

autoignition

oxygen

activation

fuel

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

National Response Framework (NRF).

National Incident Management System (NIMS).

Incident Management System (IMS).

Memorandum of Understanding (MOU).

43. 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.

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

Mexico has several placards for materials that may be inhaled.

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

Orange

Red

Green

Yellow

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

apply first aid and return them to an ambulatory state.

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

package and triage them appropriately.

thoroughly decontaminate them before transferring them to EMS.

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

Stress

Release

Exposure

Dispersion

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

mechanical

chemical

thermal

radiological

48. Decontamination usually takes place within the:

command zone.

warm zone.

cold zone.

hot zone.

49. 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

Particulate

Hemispheric

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

cellular

external

environmental

organ

HAZWOPER Technician

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