Environmental IssuesHard
Question
During daytime sound level in silent zone is
Options
A.20 dB
B.40 dB
C.50 dB
D.90 dB
More Environmental Issues Questions
Which one is employed for clearing oil spilage...One of the following is the major reason for pollution in big cities...Biological treatment of water pollution is done with the help of...dB is a standard abbreviation used for the quantative expressions of...The chemical that contributes to the destruction of ozone layer of the earth′s surface is...