High noise level in a chemical plant can be controlled by the_________________?
Correct answer: C. All A., B. & C.
- A. Suppression of noise at the source itself
- B. Path control of noise
- C. All A., B. & C.
- D. Protection of operating personnel
Explanation
Noise control follows three approaches: reduce noise at its source, interrupt or enclose its transmission path, and protect workers with measures such as hearing protection. Since all three are valid, the combined option is correct.
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