<prompt> Index of potency of general anesthesia ?Minimum alveolar concentrationDiffusion coefficientDead space concentrationAlveolar blood concentration  <response>: Ans. is a i.e., Minimum alveolar concentration Minimal alveolar concentration It is the lowest concentration of the anaesthetic in pulmonary alveoli needed to produce immobility in response to a painful stimulus surgical incision in 50 individuals. It is the measure of potency of inhalation GAs 