Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about ______________ decibels?
Correct answer: C. 90
- A. 20
- B. 60
- C. 90
- D. 120
Explanation
The commonly used maximum exposure limit for continuous occupational noise over an 8-hour shift is about 90 dBA. Lower levels such as 60 dB are comfortable background noise, while 120 dB can cause immediate pain or injury.
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