Question
Why does weather become pleasant when it starts freezing in cold countries?
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Answer
Ice has the highest sp . latent heat of fusion of $336,000 jkg ^{-1}$. Thus, every $1 kg$ of water at $0^{\circ} C$, on freezing releases $336,000 J$ of heat energy. As enormous amount of heat energy is released in atmosphere, therefore weather becomes pleasant.
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