HAZMAT OPERATIONS WITH
QUESTIONS WITH CORRECT
ANSWERS GRADED A+ FOR 2026
ASSURED EXCELL
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. - CORRECT ANSWERS-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. - CORRECT ANSWERS-C
Liquids may be easier than gases to detect because they are usually: (142)
A.frozen.
B.visible.
C.colored.
D.scented - CORRECT ANSWERS-B
The least mobile of the three states of matter are: (143)
A.solids.
,B.gases.
C.liquids.
D.aerosols. - CORRECT ANSWERS-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 - CORRECT ANSWERS-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. - CORRECT ANSWERS-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. -
CORRECT ANSWERS-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 - CORRECT ANSWERS-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.specificrgravity
D.vaporrpressurer-rrCORRECTrANSWERS-B
Materialsrwithrarspecificrgravityrgreaterrthanronerwill:r(151)
A.BLEVE.
B.sinkrinrwater.
C.floatrinrwater.
D.mixrwithrwater.r-rrCORRECTrANSWERS-B
Whenrshouldrodorsrberusedrtordeterminersaferorrunsaferareas?r(154)
A.Never
B.Always
C.Untilrartechnicianrarrives
D.Ifrthermonitoringrequipmentrbreaksr-rrCORRECTrANSWERS-A
Flammability,rcorrosivity,randrreactivityrarer_____rpropertiesrofrarmaterial.r(154)
A.physical
B.chemical
C.biological
, D.radiologicalr-rrCORRECTrANSWERS-B
Armaterial'srautoignitionrtemperaturerisr_____ritsrflashrandrfirerpoints.r(155-156)
A.exactlyrthersameras
B.considerablyrlowerrthan
C.considerablyrhigherrthan
D.sometimesrlowerrandrsometimesrhigherrthanr-rrCORRECTrANSWERS-C
Ther_____rofrarsubstancerdescribesritsrrelativerabilityrtorundergorarchemicalrreactionrwithritselfrorr
otherrmaterials.r(158)
A.reactivity
B.corrosivity
C.flammability
D.radioactivityr-rrCORRECTrANSWERS-A
Thertypesrofrionizingrradiationrareralpha,rbeta,rgamma,rand:r(163)
A.proton.
B.electron.
C.neutron.
D.dosimeter.r-rrCORRECTrANSWERS-C
Therdegreertorwhichrarsubstancercausesrharmrwithinrtherbodyrisrcalledrits:r(170)
A.toxicity.
B.reactivity.
C.sensitization.
D.biologicalrhazardr-rrCORRECTrANSWERS-A
QUESTIONS WITH CORRECT
ANSWERS GRADED A+ FOR 2026
ASSURED EXCELL
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. - CORRECT ANSWERS-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. - CORRECT ANSWERS-C
Liquids may be easier than gases to detect because they are usually: (142)
A.frozen.
B.visible.
C.colored.
D.scented - CORRECT ANSWERS-B
The least mobile of the three states of matter are: (143)
A.solids.
,B.gases.
C.liquids.
D.aerosols. - CORRECT ANSWERS-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 - CORRECT ANSWERS-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. - CORRECT ANSWERS-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. -
CORRECT ANSWERS-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 - CORRECT ANSWERS-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.specificrgravity
D.vaporrpressurer-rrCORRECTrANSWERS-B
Materialsrwithrarspecificrgravityrgreaterrthanronerwill:r(151)
A.BLEVE.
B.sinkrinrwater.
C.floatrinrwater.
D.mixrwithrwater.r-rrCORRECTrANSWERS-B
Whenrshouldrodorsrberusedrtordeterminersaferorrunsaferareas?r(154)
A.Never
B.Always
C.Untilrartechnicianrarrives
D.Ifrthermonitoringrequipmentrbreaksr-rrCORRECTrANSWERS-A
Flammability,rcorrosivity,randrreactivityrarer_____rpropertiesrofrarmaterial.r(154)
A.physical
B.chemical
C.biological
, D.radiologicalr-rrCORRECTrANSWERS-B
Armaterial'srautoignitionrtemperaturerisr_____ritsrflashrandrfirerpoints.r(155-156)
A.exactlyrthersameras
B.considerablyrlowerrthan
C.considerablyrhigherrthan
D.sometimesrlowerrandrsometimesrhigherrthanr-rrCORRECTrANSWERS-C
Ther_____rofrarsubstancerdescribesritsrrelativerabilityrtorundergorarchemicalrreactionrwithritselfrorr
otherrmaterials.r(158)
A.reactivity
B.corrosivity
C.flammability
D.radioactivityr-rrCORRECTrANSWERS-A
Thertypesrofrionizingrradiationrareralpha,rbeta,rgamma,rand:r(163)
A.proton.
B.electron.
C.neutron.
D.dosimeter.r-rrCORRECTrANSWERS-C
Therdegreertorwhichrarsubstancercausesrharmrwithinrtherbodyrisrcalledrits:r(170)
A.toxicity.
B.reactivity.
C.sensitization.
D.biologicalrhazardr-rrCORRECTrANSWERS-A
