Which method boils water under pressure?

Which method boils water under pressure?

• A. Glass bead
• B. UV Sterilisation
• C. Boiling water in a kettle
• D. Autoclave

Answer: (D)

Boiling water under pressure happens when steam is used at high pressure, which raises the boiling temperature above 100°C. An autoclave creates a sealed chamber where steam is generated under significant pressure, typically around 121°C at about 15 psi, so water boils and remains at a higher temperature for effective sterilization. This combination of heat and pressure is what enables rapid and thorough sterilization of instruments. By contrast, boiling in a kettle occurs at atmospheric pressure (about 100°C), UV sterilisation uses ultraviolet light rather than heat or pressure, and a glass bead sterilizer relies on hot beads to sterilize without applying pressure.

Boiling water under pressure happens when steam is used at high pressure, which raises the boiling temperature above 100°C. An autoclave creates a sealed chamber where steam is generated under significant pressure, typically around 121°C at about 15 psi, so water boils and remains at a higher temperature for effective sterilization. This combination of heat and pressure is what enables rapid and thorough sterilization of instruments. By contrast, boiling in a kettle occurs at atmospheric pressure (about 100°C), UV sterilisation uses ultraviolet light rather than heat or pressure, and a glass bead sterilizer relies on hot beads to sterilize without applying pressure.