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What is the minimum effective concentration of ethanol for disinfection?

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Question: What is the minimum effective concentration of ethanol for disinfection?

Options:

  1. 50%
  2. 70%
  3. 90%
  4. 100%

Correct Answer: 70%

Solution: 

70% ethanol is the minimum effective concentration for disinfection as it allows for better penetration and denaturation of proteins.

What is the minimum effective concentration of ethanol for disinfection?

Practice Questions

Q1
What is the minimum effective concentration of ethanol for disinfection?
  1. 50%
  2. 70%
  3. 90%
  4. 100%

Questions & Step-by-Step Solutions

What is the minimum effective concentration of ethanol for disinfection?
Correct Answer: 70% ethanol
  • Step 1: Understand that ethanol is a type of alcohol used for disinfection.
  • Step 2: Know that different concentrations of ethanol can be used for cleaning.
  • Step 3: Learn that 70% ethanol is commonly recommended for disinfection.
  • Step 4: Recognize that 70% ethanol works well because it can penetrate cells better than higher concentrations.
  • Step 5: Remember that 70% ethanol helps to denature proteins, which is important for killing germs.
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