<prompt> Which is a form of cold sterilization -Gamma raysBeta raysInfrared raysAutoclave  <response>: Ionising radiations:Xray ,Gamma rays Cold sterilisation is a process in which sterilisation is carried out at a low temperature with the help of chemicals,radiations,membranes and all other means excluding higher temperature REF:Ananthanarayan Panickers Textbook of Microbiology 9th edition pg no:33 