The maximum antiseptic action is seen with which of the following concedntrations of ethanol_____________?
Correct answer: C. 70%
- A. 50%
- B. 65%
- C. 70%
- D. 95%
Explanation
Ethanol is most effective as an antiseptic at about 70%, because water improves protein denaturation and allows better penetration into microbes. Highly concentrated 95% ethanol dehydrates surface proteins rapidly and penetrates less effectively.
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Practise Antimicrobial Agents
144 free Antimicrobial Agents MCQs from Pharmacology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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