Unlike most substances which contract uniformly upon cooling, water contracts upon cooling only down to 4°C. Below 4°C, it expands until it freezes at 0°C. This means its density is maximum at 4°C.
The temperature, in centigrade scale, at which the density of water is maximum –
Asked in WBCS Main Paper 4 2021 · Topic: Physical Properties of Materials (Density and Specific Gravity)
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