The rate of evaporation of liquid does not depend upon

[amp_mcq option1=”temperature” option2=”its surface area exposed to the atmosphere” option3=”its mass” option4=”humidity” correct=”option3″]

This question was previously asked in

UPSC CDS-2 – 2019

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The rate of evaporation of a liquid depends on factors such as temperature, surface area exposed to the atmosphere, humidity of the surrounding air, and air movement (wind). A higher temperature, larger surface area, lower humidity, and increased air movement all lead to a higher rate of evaporation. The mass of the liquid affects the total amount that can evaporate and how long the process takes, but it does not determine the *rate* at which evaporation occurs from the surface at any given moment under specific environmental conditions.

The rate of evaporation is a surface phenomenon influenced by factors affecting the energy and movement of molecules at the liquid-gas interface.

While total evaporation is limited by the mass, the speed at which it happens per unit area or per unit time is independent of the total volume or mass present, assuming sufficient liquid exists. For example, a thin film of water will evaporate at the same rate per unit area as a large puddle under the same conditions, until the film is gone.

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