The Ethyl alcohol (Ethanol) is more effective when mixed with water and used as_____________?
Correct answer: D. 60 to 70 percent
- A. 10 to 20 percent
- B. 20 to 30 percent
- C. 40 to 50 percent
- D. 60 to 70 percent
Explanation
A 60% to 70% ethanol-water mixture penetrates microbial cells and denatures proteins more effectively than absolute alcohol, which dehydrates the surface too rapidly. This is why approximately 70% ethanol is widely used as an antiseptic.
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