VSR-0115
QUESTION
Hydrogen peroxide (1-2%) is more effective as?
OPTIONS
(A) Sporicide
(B) Bactericide
(C) Bacteriostatic
(D) None of the above
ANSWER
(A) Sporicide
EXPLANATION
Hydrogen peroxide is a strong oxidizing agent that damages microbial proteins, membrane lipids, and nucleic acids through the generation of reactive oxygen species. At about 1–2% concentration, it is considered particularly effective against bacterial spores, hence its classification here as a sporicide. Although hydrogen peroxide also has bactericidal activity against vegetative bacteria, the question specifically asks what it is more effective as, and the intended answer is its sporicidal action. Bacteriostatic is incorrect because hydrogen peroxide kills microorganisms rather than merely inhibiting their growth, and “none of the above” is therefore also incorrect. Hence, option (A) Sporicide is the correct answer.
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