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A beaker filled with water at 4 .^(@)C o...

A beaker filled with water at `4 .^(@)C` over flows if the temperature of water increases or decreases. Explain why?

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The water has anamalous expansion. Its density is maximum at `4^(@)C` and its volume is minimum at `4^(@)C`. When temperature of water increases or decreases from `4^(@)C` it expands. Its volume increases so the beaker filled with water over flows.
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