Operation theatre sterilisation is done by: (A) savlon cleansing, (B) Carbolic acid spray, (C) Ultra violet radition, (D) Autoclave
Answer is C. UV rays are used to disinfect OT for 30-45 min exposure Formaldehyde gas also can be used for fumigation of operation theatres. Ref : Ananthanarayana textbook of Microbiology 9th edition Pgno : 33