HAZWOPER Technician

Practice Exam

Knowledge Check

Page 1 of 5

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

Green

Orange

Red

Yellow

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

SCBA

IDLH

APR

CPC

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

Alarm sounding on a photoionization detector.

Consistent temperatures

Black smoke

A sudden change in pressure

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

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

Gases and vapors can permeate the garments.

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

It provides exposure protection from liquid chemicals.

5. 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

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

7. 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

8. What type of incident requires unified command?

Level I

Level III

Level II

Level IV

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

National Response Framework (NRF).

Incident Management System (IMS).

Memorandum of Understanding (MOU).

National Incident Management System (NIMS).

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

RIBC

FIBC

Nonbulk

Liquid

Page 2 of 5

11. A highway vehicle without a placard:

may still be carrying hazardous materials.

will NOT be carrying hazardous materials.

should be stopped and inspected for terrorist activity.

is illegal.

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

Responders should undergo decon.

Victims should be identified.

Victims should be instructed to disrobe.

Technical decon should be set up.

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

Nonpressure

Cryogenic

Low pressure

High pressure

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

Effective command and control

Increased chaos on scene

Decreased accountability

Size-up becomes unnecessary

15. 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

Plume

Hemispheric

16. 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.

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

Mexico does not require placards for radioactive materials.

Mexico has several placards for materials that may be inhaled.

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

unavoidable risks.

potential site hazards.

potential ignition sources.

variables to eliminate.

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

decontaminated.

destroyed.

kept away from victims.

isolated.

19. 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.

20. A Level II incident:

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

will most likely not be concluded by any one agency.

does not require the use of chemical protective clothing.

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

Page 3 of 5

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

sudden gastrointestinal distress.

itching, scratching, and bloody skin lesions.

delayed symptoms that include pulmonary edema and coughing up blood.

immediate symptoms such as coughing and throat irritations.

22. 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

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

psig

Atmospheres

kPa

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

can guide responders' actions at hazmat incidents.

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.

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

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

Any erroneous or incomplete placarding or markings

Peculiar smells, visible vapor clouds, and radiant heat

The conversion of one substance to another

26. 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.

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.

27. 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.

follow local procedures for emergency decontamination.

notify law enforcement.

28. 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

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

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

thoroughly decontaminate them before transferring them to EMS.

package and triage them appropriately.

apply first aid and return them to an ambulatory state.

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

hazard assessment.

safety checks.

preincident planning.

size-up.

Page 4 of 5

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

Biological toxins

Rickettsias

Viruses

Bacteria

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

contain

identify

preserve

destroy

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

autoignition

activation

oxygen

fuel

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

Contamination

Fuel

Inhibitor

Catalyst

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

progress reports.

on-scene debriefing.

evacuation.

shelter in place.

36. 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.

how much media coverage is involved.

the local terrain and available waterways.

temperature and wind conditions.

37. Decontamination usually takes place within the:

hot zone.

cold zone.

warm zone.

command zone.

38. 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.

39. 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

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

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.

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

Page 5 of 5

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

Emergency decontamination should be considered at all hazmat incidents.

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

42. 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.

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

upwind

inside

downwind

opposite

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

thermal

mechanical

radiological

chemical

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

radioactivity, pressure, and temperature.

wind speed, barometric pressure, and time of day.

energy release, corrosivity, and toxicity.

dispersion patterns, rapid release, and detonation.

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

Release

Exposure

Stress

Dispersion

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

Placard

Label

Marking

Four-digit ID number

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

dilution.

chemical degradation.

brushing and scraping.

evaporation.

49. 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.

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

external

cellular

organ

environmental

HAZWOPER Technician

Practice Exam

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