Q42. Why does the temperature of substances remain constant during its melting point or boiling point?
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Explanation:
The 'temperature of a substance' remains constant during its melting and boiling point because the change in any state of matter as n solid to liquid or the liquid to a gas involves crossing the 'latent heat of fusion' which causes a change in the intermolecular spacing of the molecules in the substance.
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Answer:
because of anomoulus expansion of water
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