Hawaii Barber Operator Practice Exam

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Study for the Hawaii Barber Operator Exam. Tackle realistic questions with multiple choice formats, hints, and explanations designed for success. Prepare confidently for your certification!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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Which percentage of isopropyl alcohol can disinfect shears or razors?

The correct answer is: 99%

Isopropyl alcohol is commonly used as a disinfectant because it is an effective agent against germs, bacteria, and viruses. In order for it to effectively disinfect shears or razors, the concentration of isopropyl alcohol needs to be high enough. Option D, 99%, is the best percentage for disinfecting purposes as it kills a larger percentage of germs compared to the other options. Option A (70%), B (75%), and C (90%) may still have some bacteria or germs remaining due to a lower alcohol concentration. Therefore, D, 99%, is the most effective percentage for disinfecting shears or razors.