Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air. (A) Hydrocarbons (B) Hydrogen fluoride (C) Hydrogen sulphides (D) Nitrogen dioxide

Fluorosis (a bone disease) is caused by the presence of high
concentration of __________ in atmospheric air.
(A) Hydrocarbons
(B) Hydrogen fluoride
(C) Hydrogen sulphides
(D) Nitrogen dioxide
by

1 Answer

Answer :

(B) Hydrogen fluoride
by

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