Question

Which of the following comes under chemical method of sterilization?

• A. Ethylene oxide treatment
• B. Radiation
• C. Moist heat sterilization
• D. Filtration

Hint:

Chemical sterilization → think ethylene oxide for heat-sensitive tools.

Answer 1

The Correct Option is A

Ethylene oxide (EtO) sterilization is a chemical method used to sterilize heat- and moisture-sensitive medical equipment and pharmaceuticals. It works by alkylating the DNA and proteins of microorganisms, leading to their death. Other methods listed (radiation, moist heat, and filtration) are physical methods of sterilization.