What is the boiling point of water? What is the temperature of superheated steam?
GeneralClass 10CBSEAnswered 25 May 2026
Answer
- Boiling point of water: 100°C (212°F) at standard atmospheric pressure (1 atm)
- This changes with pressure: at the top of Mount Everest (~0.33 atm), water boils at ~70°C. In a pressure cooker (above 1 atm), water stays liquid above 100°C why food cooks faster.
Superheated steam: steam heated above 100°C while remaining as gas (not allowed to condense back into water).
In industrial power plants, steam is superheated to 400–600°C (752–1112°F) to improve turbine efficiency. Superheated steam contains more energy per kilogram and has no water droplets (which would damage turbine blades).
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