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 testo Is used to diagnose cases of Carbolic acid/ phenol and salicylate overdose.o Adding few drops of 10% ferric chloride solution to 1 ml of sample produces a blue color indicating a positive test.