What temperature is typical for boiling water?

• A. 90°C
• B. 80°C
• C. 100°C
• D. 110°C

Answer: (C)

Boiling occurs when water reaches a temperature where its vapor pressure equals the surrounding air pressure. At standard atmospheric pressure, this happens at 100°C, so you’ll see vigorous bubbles and steam. This 100°C value is the reference point used in cooking and food hygiene for boiling water. Temperatures like 90°C or 80°C are hot but not boiling yet, while 110°C would require higher pressure (or would be steam rather than liquid water). Keep in mind that at higher altitudes the boiling point drops slightly, but in everyday kitchen practice 100°C is the typical boiling temperature.