<prompt> In which type of poisonings is gastric lavage contraindicated?Organophosphorus poisoningSedative drug poisoningCorrosive acid poisoningBarium carbonate poisoning  <response>: Ans. C. Corrosive acid poisoningGastric Lavage is contraindicated when patients havea. Corrosive substance poisoningb. Convulsion strychnine, tetanusc. Comad. Volatile poisons kerosenee. Hypothermiaf. patients at risk of gastrointestinal hemorrhage or perforation.g. aluminum phosphide poisoning 