<prompt> Inhalational anesthetic that can be used for induction:SevofluraneDesfluraneEnfluraneNitrous oxide  <response>: Ans. A. SevofluraneExplanationOption a: Sevoflurane with a comparative higher MAC and sweet smell. Ideal for inhalational induction. Halothane also has similar property, so it can also be used as induction agent.Option d: As MAC of Nitrous is 104, even if we use 100 nitrous patient can not be induced. Options b and c: Desflurane and enflurane are pungent smelling and not used during induction. These may result in choking and breath holding while induction. Partition coefficient at 37degC AgentMACa volMACAWAKEb Vol Vapor pressure mm Hg, 20degCBloodBrainFatRecovered as metabolitiesGasBloodBloodHalothane0.750.412432.32.95120Isoflurane1.20.42501.42.6450.2Enflurane1.60.41751.81.4362.4Sevoflurane20.61600.651.7483Desflurane62.46640.451.3270.02n2oc10560.0Gas0.471.12.30.004Xe7132.6Gas0.12---0aMAC minimum alveolar concentration values are expressed as vol the percentage of the atmosphere that is anesthetic. A value of MAC 100 means that hyperbaric conditions would be required. bMACAWAKE is the concentration at which appropriate responses to commands are lost. cEC5Qfor memory supression vol : isoflurane, 0.24; N20, 52.5; values not available for other agents. 