This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Common salt can be used as a chemical antidote for washing the stomach in case of oral poisoning by 
Select and explain. 
A. Mercuric sulphide, B. Silver nitrate, C. Copper sulphate, D. Lead bicarbonate
B: Silver nitrate
Answer: B: Silver nitrate 
Explanation: .