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Question
Chemistry
A dental disease characterised by mottling of teeth is due to presence of a certain chemical element in drinking water. Which is that element?
Q. A dental disease characterised by mottling of teeth is due to presence of a certain chemical element in drinking water. Which is that element?
72
150
Environmental Chemistry
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A
Boron
B
Chlorine
C
Fluorine
D
Mercury
Solution:
The excess of fluorine in water causes fluorosis. The symptoms of fluorosis are mottling of teeth (yellowish streaks) and abnormal bones liable to fracture etc. It is an example of endemic disease.