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प्रश्न
What is evaporation? Why does it cause cooling?
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उत्तर
Evaporation is the phenomenon of a change of a liquid into vapour without raising the temperature. Evaporation needs energy for phase change from liquid to gases. As water evaporates off your skin, it absorbs energy(heat) from the body to make the phase change to gas thus cooling the body.
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संबंधित प्रश्न
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Analogy
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