NEET
Biology
Digestion and Absorption
Question Bank
Dentition
question_answer
A dental disease characterized by mottling of teeth is due to presence of a certain chemical element in drinking water. Which is that element? (BHU 2002)
A)Boron
B)Chlorine
C)Fluorine
D)Mercury
Correct Answer:
C
Solution :
Excessive amount of fluorine can mottle tooth enamel and cause osteosclerosis.