NDA 2023 Physics question

A liquid is heated up to a certain temperature. Which one of the following situation would correspond to the boiling of the liquid ?

(A)When atmospheric pressure becomes equal to the vapour pressure (this is also correct)
(B)When atmospheric pressure becomes less than vapour pressure
(C)When atmospheric pressure becomes higher than the vapour pressure
(D)When vapour pressure becomes equal to the air pressureCorrect

Answer: (D)

Solution

As a liquid is heated its vapour pressure rises. The liquid boils at the temperature at which

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Question ID VK-032528