Fluorosis (a bone disease) is caused by the presence of high concentration of ____________ in atmospheric air?
Correct answer: B. Hydrogen fluoride
- A. Hydrocarbons
- B. Hydrogen fluoride
- C. Hydrogen sulphides
- D. Nitrogen dioxide
Explanation
Hydrogen fluoride in air supplies fluoride that can be absorbed by the body and cause fluorosis, including bone damage. Hydrocarbons, hydrogen sulphide and nitrogen dioxide are associated with other toxic or irritant effects.
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