<prompt> Plasma sterilization uses:Ethylene oxideHydrogen peroxideFormaldehydeOzone  <response>: Ans. b Hydrogen peroxide Ref. Chakarvoy 2e 41; Principles amid practice of Disinfection and sterilization by A.P. Fraise, PA Lambe 4e, p 423-428 Plasma Gas sterilization This is a type of chemical sterilization using hydrogen peroxide Hydrogen peroxide is vaporized which is then conveed into plasma. For sterilization only cold plasma is used. When Hp, vapours are energized into plasma, hydroxyl and hydroperoxyl free radicals are generated along with production of UV rays. For details see answer no 15 of chapter 5. 