This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2017, Subject name: Forensic Medicine
Gastric lavage is allowed in which corrosive poisoning? 
Select and explain. 
A. Paint thinner ingestion, B. Lysol ingestion, C. Crude toilet disinfectant ingestion, D. Battery acid ingestion
B: Lysol ingestion
Answer: B: Lysol ingestion 
Explanation: Gastric lavage is contraindicated in corrosives except phenol and lysol in which gastric lavage can be done because they thicken the membrane and maintain leathery consistency. Gastric lavage is absolutely contraindicated in following condition Corrosive (except phenol & lysol) Convulsant patient Comatose patient Kerosene poisoning