Question

At very low pressure what is the boiling point and freezing point of water?

• A. 0.01'C
• B. 0.02'C
• C. 0.05'C
• D. 0.03'C

Answer 1

The correct option is A 0.01'C

At very low pressure and a particular temperature , the three states of water can co-exist , that is called triple point of water . Therefore water can freeze and boil at this particular temperature , for water this temperature is ${0.01}^{o}C$ i.e. it is the freezing and boiling point of water at very low temperature .