This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Forensic Medicine
Gastric lavage is contraindicated in all the following poisonings except 
Select and explain. 
A. Phenol, B. Kerosene, C. Nitric acid, D. Sulphuric acid
A: Phenol
Answer: A: Phenol 
Explanation: Contraindications of Gastric Lavage: - The only absolute contraindication is corrosive poisoning (except carbolic acid), owing to the danger of perforation. Gastric lavage can be done with proper precautions. * Convulsant poisons * Comatose patients * Volatile poisons, which may be inhaled. * Oesophageal varices. * In patients with marked hypothermia, and haemorrhagic diathesis Ref:- Essentials of Forensic medicine Dr KS narayana Reddy 33th Edition; Pg num:- 516