<prompt> A dead body is having cadaveric lividity of bluish green colour. The most likely cause of death is by poisoning due to -Hydrocyanic acidHydrogen sulphideOcleanderSodium nitrite  <response>: Poison Color Nitrites Reddish brown Potassium chlorate Chocolate brown Phosphorus Dark brown Hydrogen sulphide Bluish green Cyanide Cherry red Carbon monoxide Pink Opium Blackish Ref: K.S.Narayan Reddys Synopsis of Forensic Medicine and Toxicology, 29th edition, Chapter 35. 