Page 1 of 71
CAOHC EXAM AND PRACTICE EXAM NEWEST 2025
TEST BANK| COMPLETE 550 REAL EXAM QUESTIONS
AND CORRECT VERIFIED ANSWERS/ ALREADY
GRADED A+| CAOHC CERTIFICATION EXAM PREP
2025 (BRAND NEW!!)
Unprotected exposure to hazardous noise causes:
.....ANSWER.....Temporary and/or permanent hearing loss
Temporary and/or permanent tinnitus (ringing, buzzing in ears)
Occupational noise sources .....ANSWER.....Agriculture, mining,
railroads
• Manufacturing - largest hazardous noise-exposed population
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• Machinery, weapons, vehicles, tools, equipment
Noise-Induced Illness: .....ANSWER.....hearing loss and tinnitus
Occurs gradually, over time, from repeated exposures
Noise-Induced Injury: .....ANSWER.....hearing loss and tinnitus
Occurs from one significant exposure or event
Recreational noise sources .....ANSWER.....Lawn care, power tools,
equipment, firearms, music, motorcycles
AUDITORY EFFECTS OF NOISE EXPOSURE .....ANSWER.....Loss of
hearing sensitivity
• Tinnitus
• Missing parts of conversation
• Slower, inaccurate localization
• Increased errors, safety mishaps
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Non-auditory effects of noise exposure .....ANSWER.....Raise
blood pressure
• Raise heart rate
• Increase stress hormone levels
• Disrupt healthy sleep patterns
• Result in possible reassignment to a different job
• Result in embarrassment, frustration, and social withdrawal
4 P'S OF NOISE-INDUCED HEARING LOSS (NIHL)
.....ANSWER.....1)Painless
2) Progressive
3) Permanent
4) Preventable
Purpose of hearing conservation program .....ANSWER.....•
Prevent occupation-related NIHL
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• Job retention
• Reduce costs of hearing loss: > $240 million per year
• Promote healthy hearing and quality of life
HCP major elements .....ANSWER.....- noise hazard assesment
- noise controls
- audiometric monitoring
-hearing protection devices
-hearing conversation education
-recordkeeping
-program evaluation
CAOHC MISSION .....ANSWER.....Advancing best practices in
occupational hearing conservation worldwide, through
credentialing, standards, education, and advocacy.
CAOHC EXAM AND PRACTICE EXAM NEWEST 2025
TEST BANK| COMPLETE 550 REAL EXAM QUESTIONS
AND CORRECT VERIFIED ANSWERS/ ALREADY
GRADED A+| CAOHC CERTIFICATION EXAM PREP
2025 (BRAND NEW!!)
Unprotected exposure to hazardous noise causes:
.....ANSWER.....Temporary and/or permanent hearing loss
Temporary and/or permanent tinnitus (ringing, buzzing in ears)
Occupational noise sources .....ANSWER.....Agriculture, mining,
railroads
• Manufacturing - largest hazardous noise-exposed population
,Page 2 of 71
• Machinery, weapons, vehicles, tools, equipment
Noise-Induced Illness: .....ANSWER.....hearing loss and tinnitus
Occurs gradually, over time, from repeated exposures
Noise-Induced Injury: .....ANSWER.....hearing loss and tinnitus
Occurs from one significant exposure or event
Recreational noise sources .....ANSWER.....Lawn care, power tools,
equipment, firearms, music, motorcycles
AUDITORY EFFECTS OF NOISE EXPOSURE .....ANSWER.....Loss of
hearing sensitivity
• Tinnitus
• Missing parts of conversation
• Slower, inaccurate localization
• Increased errors, safety mishaps
,Page 3 of 71
Non-auditory effects of noise exposure .....ANSWER.....Raise
blood pressure
• Raise heart rate
• Increase stress hormone levels
• Disrupt healthy sleep patterns
• Result in possible reassignment to a different job
• Result in embarrassment, frustration, and social withdrawal
4 P'S OF NOISE-INDUCED HEARING LOSS (NIHL)
.....ANSWER.....1)Painless
2) Progressive
3) Permanent
4) Preventable
Purpose of hearing conservation program .....ANSWER.....•
Prevent occupation-related NIHL
, Page 4 of 71
• Job retention
• Reduce costs of hearing loss: > $240 million per year
• Promote healthy hearing and quality of life
HCP major elements .....ANSWER.....- noise hazard assesment
- noise controls
- audiometric monitoring
-hearing protection devices
-hearing conversation education
-recordkeeping
-program evaluation
CAOHC MISSION .....ANSWER.....Advancing best practices in
occupational hearing conservation worldwide, through
credentialing, standards, education, and advocacy.
