HAZWOPER Technician

Practice Exam

Knowledge Check

Page 1 of 5

1. 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?

Label

Four-digit ID number

Marking

Placard

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

Alarm sounding on a photoionization detector.

Black smoke

Consistent temperatures

A sudden change in pressure

3. 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 C

Level D

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

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.

can guide responders' actions at hazmat incidents.

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

opposite

upwind

downwind

inside

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

wind speed, barometric pressure, and time of day.

radioactivity, pressure, and temperature.

energy release, corrosivity, and toxicity.

dispersion patterns, rapid release, and detonation.

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

Liquid

FIBC

RIBC

Nonbulk

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

dilution.

brushing and scraping.

chemical degradation.

evaporation.

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

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.

apply first aid and return them to an ambulatory state.

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

Mexico does not require placards for radioactive materials.

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

Mexico has several placards for materials that may be inhaled.

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

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

radiological

chemical

thermal

mechanical

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

progress reports.

shelter in place.

on-scene debriefing.

evacuation.

13. 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.

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

activation

oxygen

fuel

autoignition

15. 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.

The conversion of one substance to another

Peculiar smells, visible vapor clouds, and radiant heat

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

The Public Safety Section in the orange-bordered pages

The green highlighted sections of the blue-bordered pages

The Table of Initial Isolation and Protective Action Distances

The ID Guide in the yellow-bordered pages

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

decontaminated.

isolated.

destroyed.

kept away from victims.

18. A Level II incident:

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

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.

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

Bacteria

Rickettsias

Viruses

Biological toxins

20. What type of incident requires unified command?

Level I

Level IV

Level III

Level II

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21. 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 Incident Management System (NIMS).

National Response Framework (NRF).

22. 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.

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

Release

Dispersion

Stress

Exposure

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

multiple compartments.

large hemispherical heads on both ends.

black, heat-absorbing paint.

large bulky double shelling and heavy insulation.

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

Sorption

Adsorption

Absorption

Resorption

26. 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.

sample themselves to determine the contaminant.

notify law enforcement.

27. 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

Particulate

Plume

Hemispheric

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

Catalyst

Contamination

Inhibitor

Fuel

29. Decontamination usually takes place within the:

warm zone.

cold zone.

hot zone.

command zone.

30. 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.

Page 4 of 5

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

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.

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

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

Marking

Placard

Label

Four-digit ID number

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

immediate symptoms such as coughing and throat irritations.

itching, scratching, and bloody skin lesions.

sudden gastrointestinal distress.

delayed symptoms that include pulmonary edema and coughing up blood.

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

fire and rescue operations.

emergency responders entering the hot zone.

all emergency services organizations.

civilian and emergency responder victims.

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

gather information and attempt to understand the current situation.

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.

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

IDLH

SCBA

APR

CPC

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

A leave of absence

Immediate hospitalization

Exposure justification

Exposure records

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

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

Red

Orange

Green

Yellow

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

psig

Atmospheres

kPa

Page 5 of 5

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

potential ignition sources.

potential site hazards.

unavoidable risks.

variables to eliminate.

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

the IC is no longer needed.

the incident is destabilizing.

the IAP is effective.

responders should withdraw immediately.

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

EMS PPE includes a sidearm.

EMS personnel will typically wear higher levels of respiratory protection.

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

EMS personnel must wear ballistic protection.

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

Increased chaos on scene

Size-up becomes unnecessary

Decreased accountability

Effective command and control

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

cellular

external

organ

environmental

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

preincident planning.

safety checks.

size-up.

hazard assessment.

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

Cryogenic

Nonpressure

Low pressure

High pressure

48. In Step 1 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.

49. 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 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 is necessary for anyone exposed to a hazardous material.

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

contain

identify

preserve

destroy

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