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: Anaesthesia
Blood : Gas paition coefficient is a measure of ? 
Select and explain. 
A. Potency of anaesthetic agent, B. Speed of induction and recovery, C. Lipid solubility of agent, D. None
B: Speed of induction and recovery
Answer: B: Speed of induction and recovery 
Explanation: Ans. is 'b' i.e., Speed of induction and recovery Minimum alveolar concentration (MAC) --> Measure of potency. Blood : Gas paition coefficient Blood solubility of anaesthetic agent and determines the speed of induction & recovery. Oil : Gas paition coefficient -4 Lipid solubility of anaesthetic agent and is related to potency of anaesthetic agent.