Unacceptable noise levels for-

A Normal conversation- 60 to 65 db
B Heavy strect traffic- 60 to 80 db
C Quite library-20 to 30 db
D Boiler factories- 120 db

Correct Answer: Boiler factories- 120 db

Bissoy MCQ
#নার্সিং(Nursing) ভর্তি পরীক্ষা #বিএসসি (ডিপ্লোমা) ইন হেল্‌থ টেকনোলজি ভর্তি পরীক্ষা ২০১৮-২০১৯ #সবগুলো বিষয় একসাথে

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