Question

dB is a standard abbreviation used the quantitative expression of

• A. The density of bacteria in a medium
• B. A particular pollutant
• C. The diminant Bacillus in a culture
• D. A certain pesticide

Answer 1

The correct option is B A particular pollutant

dB (decibel) is a standard abbreviation used for the quantitive expression of noise. Noise pollution is a physical form of pollution that affects the receiver directly.