HAZWOPER 40 - Lesson 3 – Toxicology Questions With
All Correct Answers
Chemicals in combination can produce different biological responses than the
responses seen when exposure is to one chemical alone.
True
False correct answer -True
________ is the most common route of exposure leading to a toxic dose in the
work environment
Injection
Ingestion
Inhalation
Eye/Skin contact correct answer -
LD 50 of 25 mg/m3 means that a concentration of 25 mg/m3 of a certain
substance indicates:
50 people out of a group of 80 exposed to a concentration 25 mg/m3 of a
substance were shown to have experienced a fatal dose.
50% of the concentration of a substance cause fatality in those be exposed.
A concentration of 25 mg/m3 of a substance is shown to have been fatal to 50
percent of a test group of animals.
LD 50 is a fictitious term and does not indicate anything. correct answer -A
concentration of 25 mg/m3 of a substance is shown to have been fatal to 50
percent of a test group of animals.
Factors affecting response to chemical exposure include:
Toxicity
Route of exposure
Chemical dose
All of the above correct answer -All of the above
, ________ provide most of what we know about the dangerous effects of toxic
substances.
Epidemiological studies
Animal studies
Estimation studies
Actual exposures to a chemical in the workplace correct answer -
Epidemiological studies
Animal studies
Example of chemical ________ are carbon monoxide and hydrogen cyanide.
Hepatoxins
Hematoxins
Asphyxiants
Nephrotoxins correct answer -Asphyxiants
The ACGIH publication: ________ for Chemical Substances and Physical Agents,
OSHA standard 29 CFR part 1910.1000, and other standards reference
identify substances that can be readily absorbed through the skin, mucous
membranes, and/or eyes by either airborne exposures or direct contact with a
liquid.
Threshold Limit Values
HAZCOM
Right-to-know
SDS correct answer -Threshold Limit Values
Polyurethane foam, when burnt, gives off:
Sulfuric acid
Cyanide gas
Ethane
Phosphine correct answer -Cyanide gas
Animal studies provide most of what we know about the dangerous effects of
toxic substances. Humans may react differently than animals exposed to toxic
materials.
All Correct Answers
Chemicals in combination can produce different biological responses than the
responses seen when exposure is to one chemical alone.
True
False correct answer -True
________ is the most common route of exposure leading to a toxic dose in the
work environment
Injection
Ingestion
Inhalation
Eye/Skin contact correct answer -
LD 50 of 25 mg/m3 means that a concentration of 25 mg/m3 of a certain
substance indicates:
50 people out of a group of 80 exposed to a concentration 25 mg/m3 of a
substance were shown to have experienced a fatal dose.
50% of the concentration of a substance cause fatality in those be exposed.
A concentration of 25 mg/m3 of a substance is shown to have been fatal to 50
percent of a test group of animals.
LD 50 is a fictitious term and does not indicate anything. correct answer -A
concentration of 25 mg/m3 of a substance is shown to have been fatal to 50
percent of a test group of animals.
Factors affecting response to chemical exposure include:
Toxicity
Route of exposure
Chemical dose
All of the above correct answer -All of the above
, ________ provide most of what we know about the dangerous effects of toxic
substances.
Epidemiological studies
Animal studies
Estimation studies
Actual exposures to a chemical in the workplace correct answer -
Epidemiological studies
Animal studies
Example of chemical ________ are carbon monoxide and hydrogen cyanide.
Hepatoxins
Hematoxins
Asphyxiants
Nephrotoxins correct answer -Asphyxiants
The ACGIH publication: ________ for Chemical Substances and Physical Agents,
OSHA standard 29 CFR part 1910.1000, and other standards reference
identify substances that can be readily absorbed through the skin, mucous
membranes, and/or eyes by either airborne exposures or direct contact with a
liquid.
Threshold Limit Values
HAZCOM
Right-to-know
SDS correct answer -Threshold Limit Values
Polyurethane foam, when burnt, gives off:
Sulfuric acid
Cyanide gas
Ethane
Phosphine correct answer -Cyanide gas
Animal studies provide most of what we know about the dangerous effects of
toxic substances. Humans may react differently than animals exposed to toxic
materials.
