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Hazmat Incident Commander
Chapter 2
Knowledge Check
1.
The level of toxicity at which the concentration of an ingested, absorbed, or injected substance results in death among 50% of the test population is known as the:
lethal concentration.
lethal dose.
parts per million.
parts per billion.
2.
Which of the following is NOT considered a common method of exposure?
Inhalation
Ingestion
Absorption
Injection
3.
What is the term for the 15-minute, time-weighted average exposure that should not be exceeded at any one time, nor be repeated more than 4 times daily with a 60-minute rest period between each exposure?
Threshold-limit value/time-weighted average
Permissible exposure limit
Short-term exposure limit
Level that is immediately dangerous to life or health
4.
26. What is the term for the maximum concentration that should not be exceeded, even instantaneously?
Threshold-limit value/time-weighted average
Threshold-limit value/ceiling
Short-term exposure limit
Level that is immediately dangerous to life or health
5.
What is the term for the maximum airborne concentration of a material to which an average healthy person may be exposed repeatedly for 8 hours each day, 40 hours a week, without suffering irreversible effects?
Threshold-limit value/time-weighted average
Permissible exposure limit
Short-term exposure limit
Level that is immediately dangerous to life or health
6.
Infrared waves, radio waves, and visible light are all examples of _______ radiation, which is also characterized by its lack of energy to remove electrons from atoms.
nonionizing
ionizing
X-ray
nuclear
7.
The term for a systemic poison that attacks the blood system is:
hematotoxin.
nephrotoxin.
neurotoxin.
teratogen.
8.
What can happen to the human body when exposed to dose rates that reach and exceed the threshold levels?
Human body becomes immune to chemical.
Human body receives minimal physical damage.
Human body can suffer biological harm.
Human body will suffer no damage.
9.
The term for a systemic poison that causes genetic damage to cells or organisms is:
dermatotoxin.
hematotoxin.
mutagen.
teratogen.
10.
What is the term for an atmospheric concentration of any toxic, corrosive, or asphyxiant substance that poses an immediate threat to life, or would cause irreversible or delayed adverse health effects?
Threshold-limit value/time-weighted average
Permissible exposure limit
Short-term exposure limit
Level that is immediately dangerous to life or health
11.
Of the four types of radiation, which can travel several yards in air and penetrate paper and human skin?
Alpha
Beta
Gamma
Neutron
12.
Exposure to various types and doses of hazardous materials over a period of years is associated with:
incident safety problems.
acute safety problems.
chronic health effects.
increased acute effects.
13.
Inhalation of corrosive gases causing burns or acute swelling to the upper respiratory tract is a result of which category of harm to the human body?
Corrosive
Etiological
Poisonous
Radiation
14.
Which of the following best describes exposure to a single dose of highly toxic chemicals during emergency response?
Acute effects
Chronic effects
Acute exposure
Chronic exposure
15.
Which route of exposure can be enhanced due to abrasions, cuts, heat, and moisture, and can have varying rates of exposure depending on the body parts exposed?
Inhalation
Ingestion
Injection
Skin absorption
16.
A ______ effect occurs when a chemical enters the bloodstream and attacks internal areas of the human body.
dose
local
systemic
toxic
17.
Which type of exposure would result from needlestick punctures or injection of high-pressure gases and liquids into the body?
Inhalation
Injection
Ingestion
Absorption
18.
Routes of exposure are a prime way for hazardous materials to enter the body and cause harm. The route of exposure that is most common and dangerous is:
inhalation.
ingestion.
injection.
skin absorption.
19.
Harm to the human body that results from direct contact with fragments from a blast or container is known as:
asphyxiation.
mechanical harm.
radiation.
thermal harm.
20.
The level of toxicity at which the concentration of an inhaled substance results in death among 50% of the test population is known as the:
lethal concentration.
lethal dose.
parts per million.
parts per billion.
21.
The term for a systemic poison that attacks the central nervous system is:
dermatotoxin.
hepatoxin.
mutagen.
neurotoxin.
22.
The human body’s response to a chemical may be influenced by four factors. Which of the following is NOT one of those factors?
Age
Gender
State of health
Ethnicity
23.
Low exposures to hazardous chemicals, repeated multiple times over many years, would best describe what type of exposure?
Acute exposure
Subchronic exposure
Subacute exposure
Chronic exposure
24.
A responder is exhibiting signs and symptoms of exposure as she is resting in rehab after performing control functions at a hazardous materials incident. Which of the following best describes this situation?
Acute effects
Chronic effects
Acute exposure
Chronic exposure
25.
Prohibiting personnel from drinking, eating, or smoking except in designated areas, such as rehab, after decontamination will prevent exposure through:
ingestion.
injection.
direct contact.
skin absorption.
26.
Which type of harm to the human body involves exposure to either hot or cold temperatures?
Corrosive
Etiological
Mechanical
Thermal
27.
There are three basic atmospheres at an incident involving hazardous materials. Which of the following is NOT one of them?
Dangerous atmosphere
Safe atmosphere
Toxic atmosphere
Unsafe atmosphere
28.
Which method of exposure allows hazardous materials such as corrosives to immediately damage skin or body tissue on contact?
Injection
Direct contact
Skin absorption
Inhalation
29.
_____ is defined as the ability of a substance to cause injury to biological organisms.
Corrosivity
Abrasiveness
Toxicity
Volatility
30.
Which of the following refers to direct contact with a chemical through skin absorption?
Exposure
Proximity
Trauma
Harm
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