- Boiling is the phase transition where a liquid turns into a gas when heated to its boiling point. - The boiling point of a liquid is defined as the temperature at which its vapor pressure equals the surrounding environmental pressure (usually atmospheric pressure). - At this point, the vapor pressure is sufficient to overcome the external pressure, allowing bubbles of vapor to form within the bulk of the liquid and rise to the surface.
A liquid is heated up to a certain temperature. Which one of the following situation would correspond to the boiling of the liquid?
Asked in UPSC NDA 2 2023 · Topic: Heat and Thermodynamics (Phase Transitions and Clausius-Clapeyron Equation)
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Answer: A. When atmospheric pressure becomes equal to the vapour pressure
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