This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Highest analgesic effect is a feature of - 
Select and explain. 
A. Ketamine, B. Thiopentone, C. Propofol, D. Ethomidate
A: Ketamine
Answer: A: Ketamine 
Explanation: Ans. is 'a' i.e., Ketamine "Ketamine is different from most other anaesthetic induction agents in that it has significant analgesic action". Remember o Amongst inhalation agents trilene (maximum), NO and ether have good analgesic action.