Question Detail
Question
Which of the following is NOT a method of physical sterilization?
Correct Answer
Option D is the correct answer.
Detailed Explanation
Quaternary ammonium compounds (Quats) are chemical disinfectants/antiseptics, not physical methods of sterilization. Autoclaving, ionizing radiation, and boiling are all physical methods used for sterilization or disinfection.
Hint
Physical sterilization methods involve processes like heat, radiation, or filtration. Which option is a chemical agent?