<prompt> Sputum can be disinfected by all except:Auto clavingBoilingCresolChlorhexidine  <response>: Ans. d. Chlorhexidine Sputum can be disinfected by autoclaving, boiling or Cresol. Chlorhexidine has no role in disinfection of sputum. Chlorhexidine hibitane is one of the most useful skin antiseptic. Creams and lotion containing 1 Chlorhexidine are recommended for burns and hand disinfection. 