Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air.

Question: Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air.
[A].

hydrocarbons

[B].

hydrogen flouride

[C].

hydrogen sulphides

[D].

nitrogen dioxide

Answer: Option B

Explanation:

No answer description available for this question.