Home » As per BIS code, the acceptable indoor noise level in hospitals is Noise Pollution MCQs As per BIS code, the acceptable indoor noise level in hospitals is May 4, 2022 2 Views Q. As per BIS code, the acceptable indoor noise level in hospitals is A. 80 dB B. 60 dB C. 40 dB D. 25 dB Answer: 40 dB