HazMat Operations Exam Questions and
Complete Solutions Graded A+
Which of the following statements about state of matter is MOST accurate? (137)
A.Gaseous, liquid, and solid materials behave differently.
B.Gaseous, liquid, and solid materials have the same mobility.
C.A material's physical state has no effect on the behavior of its container.
D.The same PPE will be worn at a hazmat incident no matter the physical state of the hazardous
material. - Answer: A
One danger of gases is that they can: (141)
A.sublimate.
B.present a splash hazard.
C.displace oxygen, creating an asphyxiating atmosphere.
D.rapidly contract when heated, causing container damage. - Answer: C
Liquids may be easier than gases to detect because they are usually: (142)
A.frozen.
B.visible.
C.colored.
D.scented - Answer: B
The least mobile of the three states of matter are: (143)
A.solids.
B.gases.
C.liquids.
D.aerosols. - Answer: A
,Vapor pressure, boiling point, specific gravity, appearance, and odor are some of the _____ of a
material. (145)
A.risks
B.hazards
C.physical properties
D.chemical properties - Answer: C
The pressure produced or exerted by the vapors released by a liquid is called its: (145)
A.boiling point.
B.vapor pressure
C.specific gravity.
D.sublimation point. - Answer: B
Which of the following statements about a BLEVE is MOST accurate? (147)
A.Catastrophic container failure can result.
B.It is rare in flammable materials with low boiling points.
C.During a BLEVE, vapor in a tank is released, then contracts rapidly and ignites.
D.BLEVEs most commonly occur when too much water has been applied to cool a tank. - Answer: A
Most gases have a vapor _____ greater than one and will sink in relation to ambient air. (149)
A.point
B.density
C.pressure
D.temperature - Answer: B
What term describes the ability of two or more gases or liquids to mix or dissolve into each other? (150)
A.solubility
B.miscibility
C.specific gravity
,D.vapor pressure - Answer: B
Materials with a specific gravity greater than one will: (151)
A.BLEVE.
B.sink in water.
C.float in water.
D.mix with water. - Answer: B
When should odors be used to determine safe or unsafe areas? (154)
A.Never
B.Always
C.Until a technician arrives
D.If the monitoring equipment breaks - Answer: A
Flammability, corrosivity, and reactivity are _____ properties of a material. (154)
A.physical
B.chemical
C.biological
D.radiological - Answer: B
A material's autoignition temperature is _____ its flash and fire points. (155-156)
A.exactly the same as
B.considerably lower than
C.considerably higher than
D.sometimes lower and sometimes higher than - Answer: C
The _____ of a substance describes its relative ability to undergo a chemical reaction with itself or other
materials. (158)
A.reactivity
, B.corrosivity
C.flammability
D.radioactivity - Answer: A
The types of ionizing radiation are alpha, beta, gamma, and: (163)
A.proton.
B.electron.
C.neutron.
D.dosimeter. - Answer: C
The degree to which a substance causes harm within the body is called its: (170)
A.toxicity.
B.reactivity.
C.sensitization.
D.biological hazard - Answer: A
Which of the following statements about biological (etiological) hazards is MOST accurate? (177)
A.Some biological hazards have been weaponized.
B.Body fluids do NOT contain or transmit biological hazards.
C.Biological hazards are only encountered in hospitals or laboratories.
D.Biological hazards only come from organisms themselves, not their waste products. - Answer: A
In general, a product's hazard class is assigned based on its: (177)
A.potential for use in terrorist attacks.
B.ability to cause epidemics/pandemics.
C.least dangerous chemical and/or physical properties.
D.most dangerous chemical and/or physical properties. - Answer: D
Complete Solutions Graded A+
Which of the following statements about state of matter is MOST accurate? (137)
A.Gaseous, liquid, and solid materials behave differently.
B.Gaseous, liquid, and solid materials have the same mobility.
C.A material's physical state has no effect on the behavior of its container.
D.The same PPE will be worn at a hazmat incident no matter the physical state of the hazardous
material. - Answer: A
One danger of gases is that they can: (141)
A.sublimate.
B.present a splash hazard.
C.displace oxygen, creating an asphyxiating atmosphere.
D.rapidly contract when heated, causing container damage. - Answer: C
Liquids may be easier than gases to detect because they are usually: (142)
A.frozen.
B.visible.
C.colored.
D.scented - Answer: B
The least mobile of the three states of matter are: (143)
A.solids.
B.gases.
C.liquids.
D.aerosols. - Answer: A
,Vapor pressure, boiling point, specific gravity, appearance, and odor are some of the _____ of a
material. (145)
A.risks
B.hazards
C.physical properties
D.chemical properties - Answer: C
The pressure produced or exerted by the vapors released by a liquid is called its: (145)
A.boiling point.
B.vapor pressure
C.specific gravity.
D.sublimation point. - Answer: B
Which of the following statements about a BLEVE is MOST accurate? (147)
A.Catastrophic container failure can result.
B.It is rare in flammable materials with low boiling points.
C.During a BLEVE, vapor in a tank is released, then contracts rapidly and ignites.
D.BLEVEs most commonly occur when too much water has been applied to cool a tank. - Answer: A
Most gases have a vapor _____ greater than one and will sink in relation to ambient air. (149)
A.point
B.density
C.pressure
D.temperature - Answer: B
What term describes the ability of two or more gases or liquids to mix or dissolve into each other? (150)
A.solubility
B.miscibility
C.specific gravity
,D.vapor pressure - Answer: B
Materials with a specific gravity greater than one will: (151)
A.BLEVE.
B.sink in water.
C.float in water.
D.mix with water. - Answer: B
When should odors be used to determine safe or unsafe areas? (154)
A.Never
B.Always
C.Until a technician arrives
D.If the monitoring equipment breaks - Answer: A
Flammability, corrosivity, and reactivity are _____ properties of a material. (154)
A.physical
B.chemical
C.biological
D.radiological - Answer: B
A material's autoignition temperature is _____ its flash and fire points. (155-156)
A.exactly the same as
B.considerably lower than
C.considerably higher than
D.sometimes lower and sometimes higher than - Answer: C
The _____ of a substance describes its relative ability to undergo a chemical reaction with itself or other
materials. (158)
A.reactivity
, B.corrosivity
C.flammability
D.radioactivity - Answer: A
The types of ionizing radiation are alpha, beta, gamma, and: (163)
A.proton.
B.electron.
C.neutron.
D.dosimeter. - Answer: C
The degree to which a substance causes harm within the body is called its: (170)
A.toxicity.
B.reactivity.
C.sensitization.
D.biological hazard - Answer: A
Which of the following statements about biological (etiological) hazards is MOST accurate? (177)
A.Some biological hazards have been weaponized.
B.Body fluids do NOT contain or transmit biological hazards.
C.Biological hazards are only encountered in hospitals or laboratories.
D.Biological hazards only come from organisms themselves, not their waste products. - Answer: A
In general, a product's hazard class is assigned based on its: (177)
A.potential for use in terrorist attacks.
B.ability to cause epidemics/pandemics.
C.least dangerous chemical and/or physical properties.
D.most dangerous chemical and/or physical properties. - Answer: D
