Chemistry · Environmental Chemistry
According to BIS standards, the maximum permissible limit of fluoride in drinking water in the absence of an alternate source is ________.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12.0 ppm
- 21.5 ppm✓
- 31.0 ppm
- 40.5 ppm
Correct answer
1.5 ppm
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