Geography & Environment · Pollution, Waste & Environmental Degradation · CAPF 2014

CAPF2014Pollution, Waste & Environmental Degradation On card ENV 3·1

Which of the following ions present in low concentration in drinking water is essential for normal growth of teeth but harmful to teeth at high concentration ?

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Answer C (official UPSC key)Fluoride: essential for teeth in low concentration, harmful at high concentration

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