CAOHC CERTIFICATION ACTUAL EXAM QUESTIONS AND WELL DE-
TAILED VERIFIED SOLUTIONS| GRADED A+| BRAND NEW 2026/2027
UPDATE
Largest industry that OSHA estimates exposes 5.2 Million workers to average noise levels of
85DB and above - ANSWER Manufacturing
what does C.A.O.H.C. stand for? - ANSWER Council for Accreditation in Occupational
Hearing Conservation
What is the CAOHC main role? - ANSWER to certify and train occupational hearing con-
servationists
Who is responsible for the care and maintenance of the audiometer - ANSWER OHC
What is the OHC not responsible for? - ANSWER the diagnosis of hearing problems
To maintain their certification, how often must OHCS be recertified? - ANSWER 5 years
from initial certification
noise-induced hearing loss ___________ be reversed by medical treatment. - ANSWER
cannot
What is impulse or impact noise defined as? - ANSWER Sudden, Loud noise from gunfire
or metal stamping
Agents besides noise that are toxic to the ear are known as - ANSWER ototoxins
1
,Agents besides noise that are toxic to the ear, especially when they are combined with noise
exposure are: - ANSWER Heavy metals, organic solvents or asphyxiants
TTS means - ANSWER Temporary threshold shift
The OHC needs to catch why type of hearing losses before they become a permanent senso-
rineural hearing loss - ANSWER TTS (temporary threshold shifts)
Technical term for ringing or other noises in the ears is known as... - ANSWER Tinnitus
Tinnitus is a warning signal of noise induced hearing loss due to : - ANSWER Hair cell
damage or fatigue
NON-AUDITORY EFFECTS OF HEARING LOSS: - ANSWER -Social isolation/depression
-Interference with communication
-Degraded job performance
- Stress
-Annoyance
-Fatigue
When is the best time to perform a baseline audiogram? - ANSWER 14 hours away from
noise (preferably pre-employment)
When is the best time to perform an annual audiogram? - ANSWER Near the end of the
work day or well into work shift
What is an audiogram? - ANSWER A chart in which hearing threshold levels are plotted
2
, POTENTIAL BENEFITS TO THE COMPANY MANAGEMENT OF A GOOD HEARING CONSERVA-
TION
PROGRAM: - ANSWER -BETTER LABOR MANAGEMENT RELATIONS
-IMPROVED EMPLOYEE MORALE
-GREATER JOB SATISFACTION
-PRODUCTIVITY AND SAFETY
-REDUCTION IN ACCIDENTS
-ILLNESSES AND LOST TIME
NAME DIFFERENT TYPES OF PROFESSIONALS TO MAKE UP THE HEARING CONSERVATION
TEAM: (7 total) - ANSWER 1. Occupational health nurse
2. Occupational physician
3. Audiologist
4.Safety Specialist
5. Industrial Hygienist
6.Otolaryngoloist
7. Noise control engineer
THE REQUIRED STANDARD AUDIOMETRIC FREQUENCIES MEASURED BY OHCS ARE: - AN-
SWER 500 (.5), 1000 (1), 2000(2), 3000(3), 4000(4) AND 6000(6); 8000 (8) IS HIGHLY
RECOMMENEDED BUT NOT REQUIRED
STANDARD AUDIOMETRIC FREQUENCIES WHEN BEGINNING A HEARING TEST: - ANSWER
START HEARING TEST AT 1000 HZ IN THE FIRST EAR AT 40 DB OF LOUDNESS. FOR THE SEC-
OND EAR, YOU START THE TEST AT 500 HZ.
True or False: THE OHC MAY NOT PERFORM SPEECH AUDIOMETRY, MASKIN, BONE CONDUC-
TION, ABRS, OAES - ANSWER TRUE
3
TAILED VERIFIED SOLUTIONS| GRADED A+| BRAND NEW 2026/2027
UPDATE
Largest industry that OSHA estimates exposes 5.2 Million workers to average noise levels of
85DB and above - ANSWER Manufacturing
what does C.A.O.H.C. stand for? - ANSWER Council for Accreditation in Occupational
Hearing Conservation
What is the CAOHC main role? - ANSWER to certify and train occupational hearing con-
servationists
Who is responsible for the care and maintenance of the audiometer - ANSWER OHC
What is the OHC not responsible for? - ANSWER the diagnosis of hearing problems
To maintain their certification, how often must OHCS be recertified? - ANSWER 5 years
from initial certification
noise-induced hearing loss ___________ be reversed by medical treatment. - ANSWER
cannot
What is impulse or impact noise defined as? - ANSWER Sudden, Loud noise from gunfire
or metal stamping
Agents besides noise that are toxic to the ear are known as - ANSWER ototoxins
1
,Agents besides noise that are toxic to the ear, especially when they are combined with noise
exposure are: - ANSWER Heavy metals, organic solvents or asphyxiants
TTS means - ANSWER Temporary threshold shift
The OHC needs to catch why type of hearing losses before they become a permanent senso-
rineural hearing loss - ANSWER TTS (temporary threshold shifts)
Technical term for ringing or other noises in the ears is known as... - ANSWER Tinnitus
Tinnitus is a warning signal of noise induced hearing loss due to : - ANSWER Hair cell
damage or fatigue
NON-AUDITORY EFFECTS OF HEARING LOSS: - ANSWER -Social isolation/depression
-Interference with communication
-Degraded job performance
- Stress
-Annoyance
-Fatigue
When is the best time to perform a baseline audiogram? - ANSWER 14 hours away from
noise (preferably pre-employment)
When is the best time to perform an annual audiogram? - ANSWER Near the end of the
work day or well into work shift
What is an audiogram? - ANSWER A chart in which hearing threshold levels are plotted
2
, POTENTIAL BENEFITS TO THE COMPANY MANAGEMENT OF A GOOD HEARING CONSERVA-
TION
PROGRAM: - ANSWER -BETTER LABOR MANAGEMENT RELATIONS
-IMPROVED EMPLOYEE MORALE
-GREATER JOB SATISFACTION
-PRODUCTIVITY AND SAFETY
-REDUCTION IN ACCIDENTS
-ILLNESSES AND LOST TIME
NAME DIFFERENT TYPES OF PROFESSIONALS TO MAKE UP THE HEARING CONSERVATION
TEAM: (7 total) - ANSWER 1. Occupational health nurse
2. Occupational physician
3. Audiologist
4.Safety Specialist
5. Industrial Hygienist
6.Otolaryngoloist
7. Noise control engineer
THE REQUIRED STANDARD AUDIOMETRIC FREQUENCIES MEASURED BY OHCS ARE: - AN-
SWER 500 (.5), 1000 (1), 2000(2), 3000(3), 4000(4) AND 6000(6); 8000 (8) IS HIGHLY
RECOMMENEDED BUT NOT REQUIRED
STANDARD AUDIOMETRIC FREQUENCIES WHEN BEGINNING A HEARING TEST: - ANSWER
START HEARING TEST AT 1000 HZ IN THE FIRST EAR AT 40 DB OF LOUDNESS. FOR THE SEC-
OND EAR, YOU START THE TEST AT 500 HZ.
True or False: THE OHC MAY NOT PERFORM SPEECH AUDIOMETRY, MASKIN, BONE CONDUC-
TION, ABRS, OAES - ANSWER TRUE
3
