What is the boiling point of water at sea level?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3. i.e. 100°C.
- At sea level, the boiling point of water is 100°C.
- The melting, freezing and boiling points change with pressure. The boiling point of water varies with atmospheric pressure. At lower pressure or higher altitudes, the boiling point is lower.
- At the lowest atmospheric pressure on top of Mount Everest, pure water boils at about 68°C.
- While in deep oceans, under immense pressure, water remains liquid at temperatures of 400°C around hydrothermal vents.