Ferric chloride test is positive in ?: (A) Penicillin overdose, (B) Salicylate overdose, (C) Dhatura poisoning, (D) Cannabis poisoning
Answer is B. Ans. is `b' i.e., Salicylate overdose Ferric Chloride test Is used to diagnose cases of Carbolic acid/ phenol and salicylate overdose. Adding few drops of 10% ferric chloride solution to 1 ml of sample produces a blue color indicating a positive test