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Question
Biology
'dB' is a standard abbreviation used for the quantitative expression of
Q. 'dB' is a standard abbreviation used for the quantitative expression of
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NTA Abhyas
NTA Abhyas 2022
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A
The density of bacteria in medium
B
A particular pollutant
C
The dominant Bacillus in a culture
D
A certain pesticide
Solution:
dB is a standard abbreviation for the quantitative expression of noise. Unwanted sound is called noise. Generally, sound above 80 dB is considered as noise.