Microbiology General 2f021f72 Temperature required for holding period of 20 minutes in Hot air oven - A 160deg C B 170deg C C 120deg C D 130deg C High-Yield Explanation Ans. is 'b' i.e., 170deg C MethodTemperature (degC)Holding time (in minutes)Autoclave12112613415103Hot air oven16017018019045187[?]51[?]5