Certainly Lethal Dose of fluoride in case of children:: (A) 1-1.5 grms, (B) 1.5-2.5 grms, (C) 2.5-5 grms, (D) 5-10 grms
Answer is C. The Certainly Lethal Dose(CLD) of fluorides is 32-64 mg per kg of body weight i.e, approximately 2.5-5 gms of fluoride in cases of children and 5-10 gms, one single related dose, in case of adults.