NBC-HIS Exam | Verified Exam Questions and Answers | Latest Updated
Study Material 2026
Question:
•
Answer:
Q: What is the normal range of human hearing in Hz?
Question:
A: 20 Hz to 20,000 Hz
Answer:
Question:
What is the normal range of human hearing in Hz?
Answer:
20 Hz to
20,000 Hz
Question:
What does dB HL stand for?
Answer:
Decibels Hearing Level
Question:
What is the function of the cochlea?
Answer:
To convert sound waves
into electrical signals sent to the brain
Question:
What does air conduction testing evaluate?
Answer:
The entire auditory
system, including outer, middle, and inner ear
,Question:
What does bone conduction testing bypass?
Answer:
The outer and
middle ear
Question:
What is the purpose of masking in audiology?
Answer:
To isolate the test
ear by preventing the non-test ear from participating
Question:
What is the minimum interaural attenuation for supra-aural headphones?
Answer:
40 dB
Question:
What does the SRT (Speech Reception Threshold) measure?
Answer:
The lowest level at which speech can be understood 50% of the time
Question:
What does the word recognition score evaluate?
Answer:
The ability to
understand speech at a comfortable loudness level
Question:
What is recruitment?
Answer:
An abnormal growth in loudness, often
seen in sensorineural hearing loss
, Question:
What causes conductive hearing loss?
Answer:
Blockage or damage in
the outer or middle ear
Question:
What causes sensorineural hearing loss?
Answer:
Damage to the cochlea
or auditory nerve
Question:
What is mixed hearing loss?
Answer:
A combination of conductive and
sensorineural hearing loss
Question:
What are common causes of sensorineural hearing loss?
Answer:
Aging,
noise exposure, ototoxic drugs, and genetics
Question:
What hearing loss type typically benefits most from hearing aids?
Answer:
Sensorineural hearing loss
Question:
What audiogram shape is associated with presbycusis?
Answer:
Sloping
high-frequency loss
Study Material 2026
Question:
•
Answer:
Q: What is the normal range of human hearing in Hz?
Question:
A: 20 Hz to 20,000 Hz
Answer:
Question:
What is the normal range of human hearing in Hz?
Answer:
20 Hz to
20,000 Hz
Question:
What does dB HL stand for?
Answer:
Decibels Hearing Level
Question:
What is the function of the cochlea?
Answer:
To convert sound waves
into electrical signals sent to the brain
Question:
What does air conduction testing evaluate?
Answer:
The entire auditory
system, including outer, middle, and inner ear
,Question:
What does bone conduction testing bypass?
Answer:
The outer and
middle ear
Question:
What is the purpose of masking in audiology?
Answer:
To isolate the test
ear by preventing the non-test ear from participating
Question:
What is the minimum interaural attenuation for supra-aural headphones?
Answer:
40 dB
Question:
What does the SRT (Speech Reception Threshold) measure?
Answer:
The lowest level at which speech can be understood 50% of the time
Question:
What does the word recognition score evaluate?
Answer:
The ability to
understand speech at a comfortable loudness level
Question:
What is recruitment?
Answer:
An abnormal growth in loudness, often
seen in sensorineural hearing loss
, Question:
What causes conductive hearing loss?
Answer:
Blockage or damage in
the outer or middle ear
Question:
What causes sensorineural hearing loss?
Answer:
Damage to the cochlea
or auditory nerve
Question:
What is mixed hearing loss?
Answer:
A combination of conductive and
sensorineural hearing loss
Question:
What are common causes of sensorineural hearing loss?
Answer:
Aging,
noise exposure, ototoxic drugs, and genetics
Question:
What hearing loss type typically benefits most from hearing aids?
Answer:
Sensorineural hearing loss
Question:
What audiogram shape is associated with presbycusis?
Answer:
Sloping
high-frequency loss
