FIREFIGHTER HAZMAT OPS FINAL EXAM LATEST 6
VERSION QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A
Applying the APIE-T process helps Operations Level Responder to: -
CORRECT ANSWER analyze the incident.
The characteristics of a material that do not involve the chemistry or
chemical nature of the material are its_____ properties. - CORRECT
ANSWER physical
Why is it important to identify the state of matter of a hazardous
material as early as possible? - CORRECT ANSWER The state of
matter influences the material's potential hazards.
Melting and vaporization are examples of: - CORRECT ANSWER
change of state.
Chemical properties describe the behaviors and interactions that
occur at the ______ level. - CORRECT ANSWER molecular
The basic components of most chemical reactions are an oxidizing
agent, a reducing agent, and: - CORRECT ANSWER an activation
energy source.
The General Hazardous Materials Behavior Model (GEBMO) assumes
that hazmat incidents have three common elements: material, ______,
and exposure. - CORRECT ANSWER container
What happens when a container is stressed beyond its limits of
recovery? - CORRECT ANSWER It breaches and releases its
contents.
Container releases are classified according to: - CORRECT ANSWER
how fast they occur.
,When do responders begin to determine the present hazards and
estimate potential harm? - CORRECT ANSWER During size-up.
What is the first responsibility of the Operations Level Responder at a
hazmat incident? - CORRECT ANSWER Analyze the incident
In which physical state is a material likely to be least mobile? -
CORRECT ANSWER Solid
Incidents involving _____ are potentially the most dangerous for
emergency responders. - CORRECT ANSWER gases
Materials with a vapor pressure over 760 mmHg will be _____ under
normal conditions. - CORRECT ANSWER gases
The temperature at which a liquid changes to gas at a given pressure
is its: - CORRECT ANSWER boiling point.
When flames contact a tank shell above its liquid level, what may
happen? - CORRECT ANSWER BLEVE (boiling liquid expanding vapor
explosion)
The specific gravity of most flammable liquids is less than one, which
means they will ____ in or on water. - CORRECT ANSWER float
What is the significance of a vapor density of less than one? -
CORRECT ANSWER The vapor will rise into the atmosphere.
Chemicals that remain in the environment for a long time are more
_____ than chemicals that quickly dissipate or break down. - CORRECT
ANSWER persistent
Where can a responder expect to find information on a material's
appearance and odor as well as its potential behavior? - CORRECT
ANSWER Safety Data Sheet (SDS)
,What term describes how much of a material will dissolve in a quantity
of water at ambient temperature? - CORRECT ANSWER Water
solubility
Water-soluble irritant agents usually cause: - CORRECT ANSWER
early upper respiratory tract irritation, resulting in coughing and throat
irritation.
Two liquids or gases are miscible if they: - CORRECT ANSWER mix or
dissolve into each other in any proportion.
All chemical reactions require some _____ to get them started. -
CORRECT ANSWER energy
Terms such as light-sensitive, heat-sensitive, or shock-sensitive
indicate that those products have an increased susceptibility to: -
CORRECT ANSWER those sources of activation energy.
The reducing agent in the reactivity triangle acts as the _____ for the
reaction. - CORRECT ANSWER fuel
How is corrosivity usually measured or expressed? - CORRECT
ANSWER pH
What scale is used to measure the acidity or alkalinity (basicity) of a
solution? - CORRECT ANSWER pH
What type of corrosive material usually does not cause immediate pain
and therefore can cause more damage? - CORRECT ANSWER Base
If an acid or base is described as weak or strong, what is actually
being described? - CORRECT ANSWER Strength
The minimum temperature at which a liquid or volatile solid gives off
sufficient vapors to form an ignitable mixture with air near its surface
is known as the ____ point. - CORRECT ANSWER Flash
, Why are flammable gases considered flammable all the time? -
CORRECT ANSWER They have extremely low flash points.
At what temperature will a fuel spontaneously ignite without any
initiation from an independent ignition source? - CORRECT ANSWER
autoignition temperature
A gas or vapor concentration in air will burn or explode if ignited and if
it is within its _____ range. - CORRECT ANSWER flammable or
explosive
What type of radiation is the least energetic and therefore least
hazardous? - CORRECT ANSWER Nonionizing
What causes ionizing radiation? - CORRECT ANSWER Unstable
atoms, which have an excess of energy and/or mass
The biological effects of ionizing radiation depend on: - CORRECT
ANSWER how much and how fast a radiation dose is received.
What is an acute exposure? - CORRECT ANSWER Short-term or one-
time event
What is it called when a hazardous material has entered or potentially
entered the body? - CORRECT ANSWER Exposure
What type of toxicants prevent the body from accessing sufficient
volumes of oxygen? - CORRECT ANSWER Asphyxiants
Most components of smoke are _____ and many are carcinogenic. -
CORRECT ANSWER toxic
Organic substances and microorganisms that pose a threat to the
health of humans and other living organisms are considered _____
hazards. - CORRECT ANSWER biological
VERSION QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A
Applying the APIE-T process helps Operations Level Responder to: -
CORRECT ANSWER analyze the incident.
The characteristics of a material that do not involve the chemistry or
chemical nature of the material are its_____ properties. - CORRECT
ANSWER physical
Why is it important to identify the state of matter of a hazardous
material as early as possible? - CORRECT ANSWER The state of
matter influences the material's potential hazards.
Melting and vaporization are examples of: - CORRECT ANSWER
change of state.
Chemical properties describe the behaviors and interactions that
occur at the ______ level. - CORRECT ANSWER molecular
The basic components of most chemical reactions are an oxidizing
agent, a reducing agent, and: - CORRECT ANSWER an activation
energy source.
The General Hazardous Materials Behavior Model (GEBMO) assumes
that hazmat incidents have three common elements: material, ______,
and exposure. - CORRECT ANSWER container
What happens when a container is stressed beyond its limits of
recovery? - CORRECT ANSWER It breaches and releases its
contents.
Container releases are classified according to: - CORRECT ANSWER
how fast they occur.
,When do responders begin to determine the present hazards and
estimate potential harm? - CORRECT ANSWER During size-up.
What is the first responsibility of the Operations Level Responder at a
hazmat incident? - CORRECT ANSWER Analyze the incident
In which physical state is a material likely to be least mobile? -
CORRECT ANSWER Solid
Incidents involving _____ are potentially the most dangerous for
emergency responders. - CORRECT ANSWER gases
Materials with a vapor pressure over 760 mmHg will be _____ under
normal conditions. - CORRECT ANSWER gases
The temperature at which a liquid changes to gas at a given pressure
is its: - CORRECT ANSWER boiling point.
When flames contact a tank shell above its liquid level, what may
happen? - CORRECT ANSWER BLEVE (boiling liquid expanding vapor
explosion)
The specific gravity of most flammable liquids is less than one, which
means they will ____ in or on water. - CORRECT ANSWER float
What is the significance of a vapor density of less than one? -
CORRECT ANSWER The vapor will rise into the atmosphere.
Chemicals that remain in the environment for a long time are more
_____ than chemicals that quickly dissipate or break down. - CORRECT
ANSWER persistent
Where can a responder expect to find information on a material's
appearance and odor as well as its potential behavior? - CORRECT
ANSWER Safety Data Sheet (SDS)
,What term describes how much of a material will dissolve in a quantity
of water at ambient temperature? - CORRECT ANSWER Water
solubility
Water-soluble irritant agents usually cause: - CORRECT ANSWER
early upper respiratory tract irritation, resulting in coughing and throat
irritation.
Two liquids or gases are miscible if they: - CORRECT ANSWER mix or
dissolve into each other in any proportion.
All chemical reactions require some _____ to get them started. -
CORRECT ANSWER energy
Terms such as light-sensitive, heat-sensitive, or shock-sensitive
indicate that those products have an increased susceptibility to: -
CORRECT ANSWER those sources of activation energy.
The reducing agent in the reactivity triangle acts as the _____ for the
reaction. - CORRECT ANSWER fuel
How is corrosivity usually measured or expressed? - CORRECT
ANSWER pH
What scale is used to measure the acidity or alkalinity (basicity) of a
solution? - CORRECT ANSWER pH
What type of corrosive material usually does not cause immediate pain
and therefore can cause more damage? - CORRECT ANSWER Base
If an acid or base is described as weak or strong, what is actually
being described? - CORRECT ANSWER Strength
The minimum temperature at which a liquid or volatile solid gives off
sufficient vapors to form an ignitable mixture with air near its surface
is known as the ____ point. - CORRECT ANSWER Flash
, Why are flammable gases considered flammable all the time? -
CORRECT ANSWER They have extremely low flash points.
At what temperature will a fuel spontaneously ignite without any
initiation from an independent ignition source? - CORRECT ANSWER
autoignition temperature
A gas or vapor concentration in air will burn or explode if ignited and if
it is within its _____ range. - CORRECT ANSWER flammable or
explosive
What type of radiation is the least energetic and therefore least
hazardous? - CORRECT ANSWER Nonionizing
What causes ionizing radiation? - CORRECT ANSWER Unstable
atoms, which have an excess of energy and/or mass
The biological effects of ionizing radiation depend on: - CORRECT
ANSWER how much and how fast a radiation dose is received.
What is an acute exposure? - CORRECT ANSWER Short-term or one-
time event
What is it called when a hazardous material has entered or potentially
entered the body? - CORRECT ANSWER Exposure
What type of toxicants prevent the body from accessing sufficient
volumes of oxygen? - CORRECT ANSWER Asphyxiants
Most components of smoke are _____ and many are carcinogenic. -
CORRECT ANSWER toxic
Organic substances and microorganisms that pose a threat to the
health of humans and other living organisms are considered _____
hazards. - CORRECT ANSWER biological
