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Which of the following pollutants has the lowest daily average concentration allowance as prescribed by the Indian ambient air quality standard?

Which of the following pollutants has the lowest daily average concentration allowance as prescribed by the Indian ambient air quality standard? Correct Answer Lead

Lead is highly regulated; its average daily allowance is less than 2 microgram per cubic metres in the atmosphere (for all the three categories). Similarly, annual averages are also restricted below this limit.

Related Questions

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