94 out of 97
All of the following are oxidase negative except
Ans. E Vibrio cholerae
Members of the family Enterobacteriacea (options A, B, C, D) are all oxidase negative.
Staphylococcus and Streptococcus are also oxidase negative.
Oxidase positive bacteria include: Pseudomonas, Neisseria, Vibrio etc.