Environment And Road Safety Education And Violence Against Women And Children And Drug Abuse 2021 Exam With Answers

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41.

The Pollution Standard Index (PSI) Scale has a span of:

A: 0-200
B: 0-300
C: 0-400
D: 0-500

The answer is: D

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Explanation

The PSI is reported as a number on a scale of 0 to 500. The index figures enable the public to determine whether the air pollution levels in a particular location are good, unhealthy, hazardous or worse.