Noise level in a quiet private business office is about _____________ decibels?
Correct answer: B. 50
- A. 25
- B. 50
- C. 70
- D. 85
Explanation
A quiet private office is typically around 50 decibels, whereas 70 dB is noticeably noisy and 85 dB approaches a level requiring occupational noise precautions. Thus 50 dB best represents the stated environment.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Plant Design and Economics
803 free Plant Design and Economics MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Plant Design and Economics questions
Which of the following fine dust removal equipments is the most efficient ?
Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is _______________ micro gram (μ g)/litre?
From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about ________________ ppm?
Which of the following is not a weightless pollutant ?
Noise pollution level in a chemical plant is expressed in __________________?
Smog is ______________________?