Permissible noise level in small conference room is

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Mr. Dubey

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📊 Environmental Engineering

Q. Permissible noise level in small conference room is

(A) 10 to 15 dB
(B) 15 to 25 dB
(C) 35 to 40 dB
(D) 55 to 60 dB

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✅ Correct Answer: (C) 35 to 40 dB

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