Environment & Ecology · Environment
Indian National Ambient Air Quality Standards (NAAQS) stipulate the maximum permissible limit of annual mean concentration of PM2.5 to be:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 125 μg/m3
- 240 μg/m3✓
- 345 μg/m3
- 460 μg/m3
Correct answer
40 μg/m3
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