Question

Under which of the following conditions we can boil water at room temperature?

• A. At low pressure
• B. At high pressure
• C. At atmospheric pressure
• D. At very high pressure

Answer 1

The correct option is A At low pressure

We can boil water at room temperature at low pressure. By reducing the pressure, the boiling point decreases so that the water begins to boil at room temperature. The boiling point of a liquid is defined as the temperature at which the vapour pressure of the liquid is equal to the external pressure.