CAOHC Exam Prep Questions with
Complete Solutions
which of the following is NOT information to collect for an aural history? a. occurrence of
measles
b. MARIJUANA USE
c. occurrence of chronic ear infection
d. motorcycle use
e. military service
during audiometry, the workers should be seated so they may see the OHC's activities: false
OSHA's 1910.95 regulation requires written notification of a Standard Threshold Shift within
how many days? 21 days
acoustic neuromas can manifest as an asymmetric or unilateral hearing loss: true
what is the proper order of steps when inserting foam earplugs? 1. prepare earplug
,2. open ear canal
3. insert earplug
if daily calibration threshold is off by more than 5 dB, the audiometer must be acoustically
calibrated: true
pre-molded earplugs are designed to be worn only once: false
flat hearing loss can be caused by which of the following? a. equipment malfunction
b. worker response error
c. intentionally not responding to tones to simulate a loss
d. conductive pathology
e. ALL OF THE ABOVE
29 CFR 1910.95 is an example of a standard, not a regulation: false
type 2 sound level meters are more precise than type 1: false
,prior to testing, the OHC should instruct the subject as to the purpose of the test: true
compliance with OSHA regulations implies that NIHL prevention best practices have been
followed: false
microprocessor audiometers offer many advantages to manual audiometry: true
if the diaphragm of the headphones is not positioned over the ear canal, response to high
frequency may be affected: true
for otoscopy the OHC should select the largest speculum that will fit in the ear canal: true
an accurate STS calculation must not include age correction: false
NIOSH creates regulations, whereas OSHA creates recommendations: false
which of the following is a common long lasting impact of NIHL: a. tinnitus
b. social withdrawal
, c. difficulty understanding conversations in background noise
d. high-frequency hearing loss
e. ALL OF THE ABOVE
banded earplugs are designed to be disposed of after one use: false
what term does hearing protector packaging use to indicate noise attenuation? a. NOISE
REDUCTION RATING
b. sound dampening level
c. noise adjustment rating
d. sound abatement level
e. noise protection rating
engineering controls to limit noise exposure include which of the following? a. lubricating
machinery
b. enclosing the noise source
c. changing to lower-noise tools and machinery
d. erecting barriers between the noise source and worker
Complete Solutions
which of the following is NOT information to collect for an aural history? a. occurrence of
measles
b. MARIJUANA USE
c. occurrence of chronic ear infection
d. motorcycle use
e. military service
during audiometry, the workers should be seated so they may see the OHC's activities: false
OSHA's 1910.95 regulation requires written notification of a Standard Threshold Shift within
how many days? 21 days
acoustic neuromas can manifest as an asymmetric or unilateral hearing loss: true
what is the proper order of steps when inserting foam earplugs? 1. prepare earplug
,2. open ear canal
3. insert earplug
if daily calibration threshold is off by more than 5 dB, the audiometer must be acoustically
calibrated: true
pre-molded earplugs are designed to be worn only once: false
flat hearing loss can be caused by which of the following? a. equipment malfunction
b. worker response error
c. intentionally not responding to tones to simulate a loss
d. conductive pathology
e. ALL OF THE ABOVE
29 CFR 1910.95 is an example of a standard, not a regulation: false
type 2 sound level meters are more precise than type 1: false
,prior to testing, the OHC should instruct the subject as to the purpose of the test: true
compliance with OSHA regulations implies that NIHL prevention best practices have been
followed: false
microprocessor audiometers offer many advantages to manual audiometry: true
if the diaphragm of the headphones is not positioned over the ear canal, response to high
frequency may be affected: true
for otoscopy the OHC should select the largest speculum that will fit in the ear canal: true
an accurate STS calculation must not include age correction: false
NIOSH creates regulations, whereas OSHA creates recommendations: false
which of the following is a common long lasting impact of NIHL: a. tinnitus
b. social withdrawal
, c. difficulty understanding conversations in background noise
d. high-frequency hearing loss
e. ALL OF THE ABOVE
banded earplugs are designed to be disposed of after one use: false
what term does hearing protector packaging use to indicate noise attenuation? a. NOISE
REDUCTION RATING
b. sound dampening level
c. noise adjustment rating
d. sound abatement level
e. noise protection rating
engineering controls to limit noise exposure include which of the following? a. lubricating
machinery
b. enclosing the noise source
c. changing to lower-noise tools and machinery
d. erecting barriers between the noise source and worker
