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प्रश्न
The maximum prescribed concentration of copper in drinking water is ______.
विकल्प
5 ppm
0.05 ppm
0.5 ppm
3 ppm
MCQ
रिक्त स्थान भरें
उत्तर
The maximum prescribed concentration of copper in drinking water is 3 ppm.
Explanation:
Cu concentrations in drinking water should not exceed 3 ppm.
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Water Pollution and Its Causes - International Standards for Drinking Water
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