WAEC Physics 2016 Objective — Question 17

17. Which of the following statements correctly defines the boiling point of a liquid? A. The temperature at which the saturated vapour pressure equals the atmospheric pressure B. molecules leave the liquid at a rate equal to the rate at which they return C. molecules leave the liquid at a rate higher than that at which they return D. molecules leave the liquid at a rate lower than the rate at which they return

• A. The temperature at which the saturated vapour pressure equals the atmospheric pressureCorrect
• B. molecules leave the liquid at a rate equal to the rate at which they return
• C. molecules leave the liquid at a rate higher than that at which they return
• D. molecules leave the liquid at a rate lower than the rate at which they return