<prompt> Cold sterilization is -Sterilization by negative temperatureSterilization by ionizing radiationSterilization by liquid CO?Sterilization by non-ionizing radiation  <response>: Ans. is b i.e., Sterilization by ionizing radiationRef: Ananthanarayan 9the p. 33 8thep. 35; Greenwood 16thep. 73o Sterilization by Ionizing radiation does not cause increase in temperature - Cold sterilization.o Ionizing irradiation used for sterilization - Greenwood 16the p. 73y photon irradiationP electrons irradiationRadiationNonionizingIonizing Gamma rays Heat labile instruments:InfraredU. V. radiation Prepacked items such as syringes catheters Enter Ways Operation theaters Laboratoriesplastics, syringes, swabs, greases, surgical catgut, bone tissue graft 