Which of the following range of Air Pollutant Index is considered as h

1.	Which of the following range of Air Pollutant Index is considered as hazardous ?
A.	301-500
B.	201-300
C.	101-200
D.	401-500
Answer» B. 201-300

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Which of the following range of Air Pollutant Index is considered as hazardous ?

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