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Which of the following forms of sterilization is adequate for killing hepatitis B?
  1. Autoclaving
  2. Ethylene oxide gas
  3. Chemical vapor
  4. Formaldehyde
Explanation
Answer: A - Autoclaving is the only way to be sure that hepatitis B virus is effectively destroyed. This form of sterilization uses moist heat to denature proteins at 121°C/205°F in 15-20 minutes. It is the most common form of sterilization and can corrode or dull carbon-steel instruments.
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