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High concentration of fluoride is poison...

High concentration of fluoride is poisonous and harmful to bones and teeth at levels over

A

1 ppm

B

3 ppm

C

5 ppm

D

10 ppm

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Fluoride Concentration**: Fluoride is a chemical that can be beneficial in small amounts, particularly for dental health. However, when present in high concentrations, it can become toxic. 2. **Identifying the Toxic Level**: According to the information provided, fluoride becomes harmful at concentrations over 10 parts per million (ppm). This means that if the fluoride level in water or any other substance exceeds this threshold, it can pose health risks. 3. **Effects on Health**: High levels of fluoride can lead to various health issues, particularly affecting bones and teeth. The process through which fluoride negatively impacts health is known as demineralization. 4. **Health Consequences**: Excessive fluoride can lead to dental problems such as tooth decay and can also contribute to osteoporosis, a condition characterized by weakened bones. 5. **Conclusion**: Therefore, it is crucial to monitor fluoride levels in drinking water and other sources to ensure they remain below the harmful threshold of 10 ppm to prevent adverse health effects. ---
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