CHST EOC PRACTICE EXAM QUESTIONS WITH ANSWERS
2025/2026 GRADED A+
What are some common hazards associated with hand and power tools? - misuse and
improper maintenance, falling flying abrasive, and splashing objects or exposure to
harmful dusts, fumes, mists, vapors, or gases, wooden handles becoming loose and
flying off,
What are some controls to mitigate hazards associated with hand and power tools? -
Keep all tools in good condition with regular maintenance, use the right tool for the job,
examine each tool for damage before use, operate all tools according to the
manufacturer's instructions, provide and use the proper ppe
What are some common hazards associated with asbestos exposure? - inhalation of
fibers, insulation, floor tiles, vehicle brakes, - buildup of scar like tissue in the lungs -
disability or death
What are some controls to mitigate asbestos exposure? - Employee exposure
monitoring, training, regulate areas, control work practices, ppe,
What are some common hazards associated with lead exposure? - Lead dust or fumes
cause brain disorders, anemia, nerve disorders, high blood pressure, kidney disorders,
reproductive disorders, decreased red blood cells, slowed reflexes. Lead exposure may
take place in demo, salvage, removal, renovation, and cleanup
What are some common controls to mitigate lead exposure? - Air monitoring,
mechanical ventilation, administrative controls, ppe, respiratory protection
What are some common hazards associated with noise exposure? - chipping,
hammering, grinding, drilling, generator, heavy equipment, processes - cause hearing
loss, impairment, temporary or permanent
What are some common controls to mitigate hazards created by noise? - Hearing
protection, lo/to, training, hearing conservation program, identify hearing protection
zones, separate noisy work area, sound absorbing material, limit exposure, avoid metal
to metal contact, keep equipment well maintained, identify areas that require hearing
protection
What is ionizing radiation? - Radiation with enough energy to detach electrons from
atoms or molecules
What is non-ionizing radiation? - A series of energy waves composed of oscillating
electric and magnetic fields traveling at the speed of light.
What are some common hazards associated with ionizing radiation? - x-rays, industrial
radiography (profile gauge), nuclear power plants, radon in soil,
, What are some common controls to mitigate the hazards associated with ionizing
radiation? - time, distance, and shielding
What are some common hazards associated with non-ionizing radiation? - Sun, black
light, welding arcs, uv lasers, excessive light, furnaces, welding, lasers, incandescent
bulbs, ovens, televisions, and some radars
What are some common controls to mitigate non-ionizing radiation hazards? - Solid
materials to block the sun, sunscreen, enclosures, filters, distance
What are some common hazards associated with silica exposure? - hazards created
when cutting, sawing, sanding, drilling, or crushing concrete, stone, rock, brick, mortar;
sanding or drilling into concrete walls, manufacturing bricks, stone counter tops,
concrete blocks - kidney disease, silicosis, pulmonary disease, lung cancer
What are some controls utilized to mitigate hazards associated with silica exposure? -
training, housekeeping practices, tools equipped w/vacuums, atmospheric testing, ppe,
respirators, water suppression
What are some common hazards associated with chemical exposure? - spills, leaks,
mislabeling, offgasing, air contamination, skin contact, ingestion, airborne particulates
What are some common controls to mitigate chemical exposure? - Safe material
handling, proper storage, GHS, proper disposal, regular inspection of processes,
eliminate the chemicals, move workers away from the area where chemicals are
used/stored, provide ppe, lockout tagout equipment that could expose workers to
chemicals
Where can thermal stress be a problem? - boiler maintenance, smelting operations,
laundries, kitchens, foundries, brick firring, refrigerated rooms or freezers.
True or False: Thermal stress can be heat or cold. - True
What are the four basic sources of heat to the body? - radiation, convection, conduction
and metabolic
What are some hazards created by extreme temperatures? - Heat stress, heat rash,
heat cramps, dehydration, heat exhaustion, heat stroke (medical emergency), cold
stress, frostbite, trench foot, hypothermia
What are some common controls for mitigating the hazards create by extreme
temperatures? - observance and adherence to the wind chill factor, proper ppe, proper
nutrition, fluid replacement, work/rest cycles, layered clothing, buddy system, light
clothing, avoid caffeine and alcohol, training, heavies work in coolest part of the day.
2025/2026 GRADED A+
What are some common hazards associated with hand and power tools? - misuse and
improper maintenance, falling flying abrasive, and splashing objects or exposure to
harmful dusts, fumes, mists, vapors, or gases, wooden handles becoming loose and
flying off,
What are some controls to mitigate hazards associated with hand and power tools? -
Keep all tools in good condition with regular maintenance, use the right tool for the job,
examine each tool for damage before use, operate all tools according to the
manufacturer's instructions, provide and use the proper ppe
What are some common hazards associated with asbestos exposure? - inhalation of
fibers, insulation, floor tiles, vehicle brakes, - buildup of scar like tissue in the lungs -
disability or death
What are some controls to mitigate asbestos exposure? - Employee exposure
monitoring, training, regulate areas, control work practices, ppe,
What are some common hazards associated with lead exposure? - Lead dust or fumes
cause brain disorders, anemia, nerve disorders, high blood pressure, kidney disorders,
reproductive disorders, decreased red blood cells, slowed reflexes. Lead exposure may
take place in demo, salvage, removal, renovation, and cleanup
What are some common controls to mitigate lead exposure? - Air monitoring,
mechanical ventilation, administrative controls, ppe, respiratory protection
What are some common hazards associated with noise exposure? - chipping,
hammering, grinding, drilling, generator, heavy equipment, processes - cause hearing
loss, impairment, temporary or permanent
What are some common controls to mitigate hazards created by noise? - Hearing
protection, lo/to, training, hearing conservation program, identify hearing protection
zones, separate noisy work area, sound absorbing material, limit exposure, avoid metal
to metal contact, keep equipment well maintained, identify areas that require hearing
protection
What is ionizing radiation? - Radiation with enough energy to detach electrons from
atoms or molecules
What is non-ionizing radiation? - A series of energy waves composed of oscillating
electric and magnetic fields traveling at the speed of light.
What are some common hazards associated with ionizing radiation? - x-rays, industrial
radiography (profile gauge), nuclear power plants, radon in soil,
, What are some common controls to mitigate the hazards associated with ionizing
radiation? - time, distance, and shielding
What are some common hazards associated with non-ionizing radiation? - Sun, black
light, welding arcs, uv lasers, excessive light, furnaces, welding, lasers, incandescent
bulbs, ovens, televisions, and some radars
What are some common controls to mitigate non-ionizing radiation hazards? - Solid
materials to block the sun, sunscreen, enclosures, filters, distance
What are some common hazards associated with silica exposure? - hazards created
when cutting, sawing, sanding, drilling, or crushing concrete, stone, rock, brick, mortar;
sanding or drilling into concrete walls, manufacturing bricks, stone counter tops,
concrete blocks - kidney disease, silicosis, pulmonary disease, lung cancer
What are some controls utilized to mitigate hazards associated with silica exposure? -
training, housekeeping practices, tools equipped w/vacuums, atmospheric testing, ppe,
respirators, water suppression
What are some common hazards associated with chemical exposure? - spills, leaks,
mislabeling, offgasing, air contamination, skin contact, ingestion, airborne particulates
What are some common controls to mitigate chemical exposure? - Safe material
handling, proper storage, GHS, proper disposal, regular inspection of processes,
eliminate the chemicals, move workers away from the area where chemicals are
used/stored, provide ppe, lockout tagout equipment that could expose workers to
chemicals
Where can thermal stress be a problem? - boiler maintenance, smelting operations,
laundries, kitchens, foundries, brick firring, refrigerated rooms or freezers.
True or False: Thermal stress can be heat or cold. - True
What are the four basic sources of heat to the body? - radiation, convection, conduction
and metabolic
What are some hazards created by extreme temperatures? - Heat stress, heat rash,
heat cramps, dehydration, heat exhaustion, heat stroke (medical emergency), cold
stress, frostbite, trench foot, hypothermia
What are some common controls for mitigating the hazards create by extreme
temperatures? - observance and adherence to the wind chill factor, proper ppe, proper
nutrition, fluid replacement, work/rest cycles, layered clothing, buddy system, light
clothing, avoid caffeine and alcohol, training, heavies work in coolest part of the day.
