GATE 2023 ES – Question 19

Air and Noise Pollution · Air Quality Management · 1 mark · Multiple choice

Under India’s2015 National AQI, NO₂,SO₂,PM₁₀ subindices are80,80,100. Find overall AQI.

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Correct answer: (C) 100

Explanation

The overall AQI is determined by the maximum relevant pollutant subindex, representing the worst air-quality component, rather than the sum or mean. Therefore max(80,80,100)=**100,C**.

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