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RVUNL_CE_Quiz 64

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Question 1

Which of the following is not a primary air pollutant?

Question 2

Which of the following is responsible for the depletion of ozone layer in the upper atmosphere?

Question 3

Electrostatic precipitator is a device to control?

Question 4

Pollutant Standards Index (PSI) value in between 101-199 denotes the air quality as _______.

Question 5

To determine the sound pressure level the value of reference pressure used is

Question 6

Intensity of sound wave is proportional to
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May 17AE & JE Exams