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What is the permissible ambient air quality standard for lead (Pb) in industrial areas, averaged over a 24-hour period, according to Indian standards?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

12.0 µg/m³
21.5 µg/m³✓
30.75 µg/m³
40.5 µg/m³

Correct answer

1.5 µg/m³

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