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CSST EXAM 2025 QUESTIONS AND
ANSWERS
Why was asbestos added to construction materials ? -correct answer - It
provided: insulation properties, strength and durability from weathering, made
spray on products easier to apply, and does not conduct electricity.
What are the three types of asbestos and their associated species? -correct
answer - Chrysotile : Serpentine , Amosite and Crocidolites : amphiboles.
What is the predominant color and structure of Chrysotile asbestos ? -correct
answer - white , long , curly , hollow
What is the predominant color and structure of Amosite asbestos
? -correct answer - brown / tan ; long and straight
What is the predominant color and structure of Crocidolite ? - correct answer -
blue ; long and straight
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What is the definition of a Surfacing material ? -correct answer - is a sprayed on
troweled on or otherwise applied to structural surfaces EX: acoustic / decorative
ceilings, fire proofing, textured paints and plasters.
what is the definition of Thermal Systems Insulation? -correct answer - applied
to pipes, fittings, tanks, other structural, components etc. , to prevent heat
loss or gain. EX: pipe insulation, elbow mud, block insulation, air cell, asbestos
paper wrap, preformed halves, magnesium silica, etc
what is the definition of Miscellaneous products: -correct answer - material
that is not TSI or surfacing but applied to structural components.
Define Friable vs non friable. -correct answer - Friable asbestos will crumble ,
pulverize or otherwise release dust by applying hand pressure.
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What agency does not use the term friable ? why? -correct answer - OSHA -
because tools that are used by workers can easily make non friable materials
friable.
Primary type of asbestos used in the U.S ? -correct answer - Chrysotile.
List three building materials / locations where ACM is likely to be found -
correct answer - fire doors, fume hoods, felt under roofs or siding, amosite
sheeting, kiln bricks and cement, lab equipment, fire safety and equipment,
auditorium curtains, gaskets, vibration joints, etc.
What are the 3 major illnesses related to asbestos exposures ? - correct answer
- Asbestosis, Lung Cancer, Mesothelioma.
What is a latency period ? What is the latency period for asbestos related
illnesses ? -correct answer - the time between exposure and symptoms / sign
of illness. 10-40 years.
CSST EXAM 2025 QUESTIONS AND
ANSWERS
Why was asbestos added to construction materials ? -correct answer - It
provided: insulation properties, strength and durability from weathering, made
spray on products easier to apply, and does not conduct electricity.
What are the three types of asbestos and their associated species? -correct
answer - Chrysotile : Serpentine , Amosite and Crocidolites : amphiboles.
What is the predominant color and structure of Chrysotile asbestos ? -correct
answer - white , long , curly , hollow
What is the predominant color and structure of Amosite asbestos
? -correct answer - brown / tan ; long and straight
What is the predominant color and structure of Crocidolite ? - correct answer -
blue ; long and straight
, Page | 2
What is the definition of a Surfacing material ? -correct answer - is a sprayed on
troweled on or otherwise applied to structural surfaces EX: acoustic / decorative
ceilings, fire proofing, textured paints and plasters.
what is the definition of Thermal Systems Insulation? -correct answer - applied
to pipes, fittings, tanks, other structural, components etc. , to prevent heat
loss or gain. EX: pipe insulation, elbow mud, block insulation, air cell, asbestos
paper wrap, preformed halves, magnesium silica, etc
what is the definition of Miscellaneous products: -correct answer - material
that is not TSI or surfacing but applied to structural components.
Define Friable vs non friable. -correct answer - Friable asbestos will crumble ,
pulverize or otherwise release dust by applying hand pressure.
, Page | 3
What agency does not use the term friable ? why? -correct answer - OSHA -
because tools that are used by workers can easily make non friable materials
friable.
Primary type of asbestos used in the U.S ? -correct answer - Chrysotile.
List three building materials / locations where ACM is likely to be found -
correct answer - fire doors, fume hoods, felt under roofs or siding, amosite
sheeting, kiln bricks and cement, lab equipment, fire safety and equipment,
auditorium curtains, gaskets, vibration joints, etc.
What are the 3 major illnesses related to asbestos exposures ? - correct answer
- Asbestosis, Lung Cancer, Mesothelioma.
What is a latency period ? What is the latency period for asbestos related
illnesses ? -correct answer - the time between exposure and symptoms / sign
of illness. 10-40 years.
