Asbestos Worker Exam with complete
solutions 2025
What is a Greek meaning of the word asbestos? - CORRECT ANSWER✔✔Inextinguishable
What time frame in history was most of the asbestos installed in buildings in the United
States? - CORRECT ANSWER✔✔1950 to 1970s
Name the country that produces most of the chrysotile asbestos worldwide. Name the
country that produces the most amosite worldwide. - CORRECT ANSWER✔✔Russia
(chrysotile)
South Africa (amosite)
What is the most commonly used asbestos? - CORRECT ANSWER✔✔Chrysotile
What colors are associated with which type of asbestos? - CORRECT ANSWER✔✔White:
Chrysotile
Brown: Amosite
Blue: Crocidolite
What type of us asbestos fiber is the most difficult to keep wet and hard to control? -
CORRECT ANSWER✔✔Amosite
,What is the definition of an asbestos fiber? - CORRECT ANSWER✔✔5 microns long with a 3-to-
1 aspect ratio
What are four ways we can keep asbestos out of our body? - CORRECT
ANSWER✔✔Engineering controls
Work practices
Protective clothing
Respirators
What does PEL stand for? - CORRECT ANSWER✔✔Permissible Exposure Limit
How many EPA regulation asbestos fibers are there? - CORRECT ANSWER✔✔6
What type of asbestos fibers are wavy and what type are straight - CORRECT
ANSWER✔✔Serpentine (wavy)
Amphibole (Straight)
What are the two states of asbestos? - CORRECT ANSWER✔✔Friable & Non- Friable
What is the definition of friable - CORRECT ANSWER✔✔Can be crushed, crumbled or
pulverized by hand pressure
What are the four reasons we used asbestos in building materials? - CORRECT
ANSWER✔✔Will not burn
Structural stability
Good thermal and electrical insulator
Impervious to chemical attack
, What are the EPA three categories of a ACM? - CORRECT ANSWER✔✔Surfacing material
Thermal system insulation
Miscellaneous
Surfacing material may be applied by what method - CORRECT ANSWER✔✔Sprayed on,
troweled on or otherwise applied
What is the most common type of asbestos in Vermiculite? - CORRECT ANSWER✔✔Tremolite
When were asbestos related health problems first noted? - CORRECT ANSWER✔✔Over 2000
years ago
What are the three types of scarring which asbestos can cause? - CORRECT
ANSWER✔✔Asbestosis
Pleural plaques
Skin growths
What is the current OSHA
PEL concerning asbestos fibers? - CORRECT ANSWER✔✔0.1 f/cc
Is asbestos a man-made fiber? - CORRECT ANSWER✔✔No. It's a naturally occurring
mineral/rock
What are the three types of cancer asbestos can cause? - CORRECT ANSWER✔✔Lung
Gastrointestinal
Mesothelioma
solutions 2025
What is a Greek meaning of the word asbestos? - CORRECT ANSWER✔✔Inextinguishable
What time frame in history was most of the asbestos installed in buildings in the United
States? - CORRECT ANSWER✔✔1950 to 1970s
Name the country that produces most of the chrysotile asbestos worldwide. Name the
country that produces the most amosite worldwide. - CORRECT ANSWER✔✔Russia
(chrysotile)
South Africa (amosite)
What is the most commonly used asbestos? - CORRECT ANSWER✔✔Chrysotile
What colors are associated with which type of asbestos? - CORRECT ANSWER✔✔White:
Chrysotile
Brown: Amosite
Blue: Crocidolite
What type of us asbestos fiber is the most difficult to keep wet and hard to control? -
CORRECT ANSWER✔✔Amosite
,What is the definition of an asbestos fiber? - CORRECT ANSWER✔✔5 microns long with a 3-to-
1 aspect ratio
What are four ways we can keep asbestos out of our body? - CORRECT
ANSWER✔✔Engineering controls
Work practices
Protective clothing
Respirators
What does PEL stand for? - CORRECT ANSWER✔✔Permissible Exposure Limit
How many EPA regulation asbestos fibers are there? - CORRECT ANSWER✔✔6
What type of asbestos fibers are wavy and what type are straight - CORRECT
ANSWER✔✔Serpentine (wavy)
Amphibole (Straight)
What are the two states of asbestos? - CORRECT ANSWER✔✔Friable & Non- Friable
What is the definition of friable - CORRECT ANSWER✔✔Can be crushed, crumbled or
pulverized by hand pressure
What are the four reasons we used asbestos in building materials? - CORRECT
ANSWER✔✔Will not burn
Structural stability
Good thermal and electrical insulator
Impervious to chemical attack
, What are the EPA three categories of a ACM? - CORRECT ANSWER✔✔Surfacing material
Thermal system insulation
Miscellaneous
Surfacing material may be applied by what method - CORRECT ANSWER✔✔Sprayed on,
troweled on or otherwise applied
What is the most common type of asbestos in Vermiculite? - CORRECT ANSWER✔✔Tremolite
When were asbestos related health problems first noted? - CORRECT ANSWER✔✔Over 2000
years ago
What are the three types of scarring which asbestos can cause? - CORRECT
ANSWER✔✔Asbestosis
Pleural plaques
Skin growths
What is the current OSHA
PEL concerning asbestos fibers? - CORRECT ANSWER✔✔0.1 f/cc
Is asbestos a man-made fiber? - CORRECT ANSWER✔✔No. It's a naturally occurring
mineral/rock
What are the three types of cancer asbestos can cause? - CORRECT ANSWER✔✔Lung
Gastrointestinal
Mesothelioma
