Noise pollution level in a chemical plant is expressed in __________________? | MCQ Hive

Chemical Engineering Chemical Environmental Engineering

Q Noise pollution level in a chemical plant is expressed in __________________?

A A. Roentgen
B B. Decibel
C C. Hertz
D D. None of these

Previous Smog is ______________________?

Next Which of the following is not a weightless pollutant ?

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