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
A sevoflurane vaporizer can accurately deliver the dose of an anesthetic agent. It resembles it in which of the following propeies? 
Select and explain. 
A. Molecular weight, B. Oil gas paition coefficient, C. Blood gas paition coefficient, D. Vapor pressure
D: Vapor pressure
Answer: D: Vapor pressure 
Explanation: Ans: D. Vapor pressureVapor pressure is directly propoional to temperature.Increasing temperature will increase the ratio of gas:liquid molecules, thereby increasing vapor pressure.Vapor pressure is independent of atmospheric pressure and is contingent only on the temperature and physical characteristics of the liquid.