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Which of the following is not a primary air pollutant?
Which of the following is responsible for the depletion of ozone layer in the upper atmosphere?
Electrostatic precipitator is a device to control?
Pollutant Standards Index (PSI) value in between 101-199 denotes the air quality as _______.
To determine the sound pressure level the value of reference pressure used is
Intensity of sound wave is proportional to
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Tags :AE & JE Exams
May 17AE & JE Exams