Botany - Environmental Issues Question with Solution | TestHub
BotanyEnvironmental IssuesPollutionEasy2 minPYQ_2020
BotanyEasysingle choice
'dB' is a standard abbreviation used for the quantitative expression of
Options:
Answer:
B
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.
Stream:NTA_ABHYAS_NEETSubject:BotanyTopic:Environmental IssuesSubtopic:Pollution
⏱ 2mℹ️ Source: PYQ_2020
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