When a vessel containing a liquid is heated, the level of liquid initially falls and then rises up. Why does it happen so? OR Describe the irregular expansion of liquid.

When a vessel containing a liquid is heated, the level of liquid initially falls and then rises up. Why does it happen so? OR Describe the irregular expansion of liquid.
by

1 Answer

Answer :

On heating the liquid water from 0 degree C to 4 degree C, it contracts
so the level of liquid initially falls. But after 4 degree C it expands
so liquid rises up.
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