Home ยป 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