Question Detail
Question
Which of the following is NOT a method of physical sterilization?
Correct Answer
Option D is the correct answer.
Detailed Explanation
Physical sterilization methods include heat (moist heat like autoclaving and boiling, and dry heat), radiation (ionizing radiation like gamma rays, and non-ionizing radiation like UV light), and filtration. Quaternary ammonium compounds are chemical disinfectants and antiseptics, not a physical method of sterilization.
Hint
Consider if the method involves heat, radiation, or mechanical removal, versus chemical agents.