Q. Fluoride deficiency in drinking water causes
I. harmful effect on bone.
II. tooth decay.
III. blue baby syndrome.
Choose the correct statement.

 59  163 Environmental Chemistry Report Error

Solution:

Statement II is correct while the statements I and III are incorrect. Corrected form are as follows :
Fluoride deficiency in drinking water is harmful to man and cause diseases such as tooth decay etc.
It does not causes harmful effect on bone and also does not causes blue baby syndrome.