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Question

Mottling of teeth is due to the presence of which of the following chemical element in drinking water?

A
Boron
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B
Chlorine
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C
Mercury
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D
Fluorine
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Solution

The correct option is D Fluorine
Mottling of teeth is also called as dental fluorosis. It is a developmental disturbance of dental enamel caused by the consumption of excess fluoride during tooth development.
Therefore, the correct answer is option D.

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