HAZWOPER Technician

Practice Exam

Knowledge Check

Page 1 of 5

1. 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 has several placards for materials that may be inhaled.

Mexico does not require placards for radioactive materials.

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

2. 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?

Particulate

Cloud

Hemispheric

Plume

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

chemical

thermal

radiological

mechanical

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

activation

autoignition

oxygen

fuel

5. 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.

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

kept away from victims.

destroyed.

isolated.

decontaminated.

7. A Level II incident:

will most likely not be concluded by any one agency.

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

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

does not require the use of chemical protective clothing.

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

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

The Table of Initial Isolation and Protective Action Distances

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

SCBA

IDLH

CPC

APR

10. 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.

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.

Page 2 of 5

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

preserve

destroy

identify

contain

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

sudden gastrointestinal distress.

delayed symptoms that include pulmonary edema and coughing up blood.

immediate symptoms such as coughing and throat irritations.

itching, scratching, and bloody skin lesions.

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

A sudden change in pressure

Consistent temperatures

Black smoke

Alarm sounding on a photoionization detector.

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

Fuel

Contamination

Catalyst

Inhibitor

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

Stress

Dispersion

Release

Exposure

16. 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

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

Any erroneous or incomplete placarding or markings

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

18. 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

19. A highway vehicle without a placard:

may still be carrying hazardous materials.

will NOT be carrying hazardous materials.

is illegal.

should be stopped and inspected for terrorist activity.

20. 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.

Page 3 of 5

21. 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.

temperature and wind conditions.

how much media coverage is involved.

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

the IAP is effective.

the incident is destabilizing.

responders should withdraw immediately.

the IC is no longer needed.

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

Rickettsias

Viruses

Bacteria

Biological toxins

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

safety checks.

preincident planning.

hazard assessment.

size-up.

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

fire and rescue operations.

all emergency services organizations.

emergency responders entering the hot zone.

civilian and emergency responder victims.

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

potential site hazards.

variables to eliminate.

unavoidable risks.

potential ignition sources.

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

black, heat-absorbing paint.

large bulky double shelling and heavy insulation.

multiple compartments.

large hemispherical heads on both ends.

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

National Incident Management System (NIMS).

Memorandum of Understanding (MOU).

Incident Management System (IMS).

National Response Framework (NRF).

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

set up a decon zone.

sample themselves to determine the contaminant.

notify law enforcement.

follow local procedures for emergency decontamination.

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

Red

Orange

Yellow

Green

Page 4 of 5

31. 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

32. 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.

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

High pressure

Cryogenic

Low pressure

Nonpressure

34. Decontamination usually takes place within the:

command zone.

hot zone.

cold zone.

warm zone.

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

organ

external

environmental

cellular

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

shelter in place.

on-scene debriefing.

evacuation.

progress reports.

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

Sorption

Absorption

Resorption

Adsorption

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

Immediate hospitalization

Exposure justification

Exposure records

A leave of absence

39. 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

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

FIBC

Liquid

Nonbulk

RIBC

Page 5 of 5

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

Victims should be instructed to disrobe.

Technical decon should be set up.

Victims should be identified.

Responders should undergo decon.

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

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

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 should be considered at all hazmat incidents.

43. What type of incident requires unified command?

Level III

Level I

Level IV

Level II

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

EMS PPE includes a sidearm.

EMS personnel must wear ballistic protection.

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

EMS personnel will typically wear higher levels of respiratory protection.

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

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.

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

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

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

psig

kPa

Atmospheres

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

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

Gases and vapors can permeate the garments.

It provides exposure protection from liquid chemicals.

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

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

opposite

downwind

upwind

inside

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

dispersion patterns, rapid release, and detonation.

energy release, corrosivity, and toxicity.

radioactivity, pressure, and temperature.

wind speed, barometric pressure, and time of day.

HAZWOPER Technician

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