Human Reproduction Question 238
Question: A dental disease characterized by mottling of teeth is due to presence of a certain chemical element in drinking water. Which is that element [CBSE PMT 1995]
Options:
A) Boron
B) Chlorine
C) Fluorine
D) Mercury
Show Answer
Answer:
Correct Answer: C
Solution:
The excess of fluorine in water causes flourosis.
The symptoms of fluorosis are mottling of teeth (yellowish streaks) and abnormal bones liable to fracture etc.
It is an example of endemic disease.
BETA
