At what temperature, the volume of a given amount of water is least for a given mass of water?

$0^{\circ} C$

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$4^{\circ} C$

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$8^{\circ} C$

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$12^{\circ} C$

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Solution

The correct option is B
$4^{\circ} C$

Generally, the volume of a given amount of a substance increases on heating.

However, water contracts when it is heated between $0^{\circ} C$ and $4^{\circ} C$ . After $4^{\circ} C$ it again starts expanding.

Hence, the volume of a given amount of water is lowest at $4^{\circ} C$ .

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At what temperature, the volume of a given amount of water is least for a given mass of water?

The correct option is B 4∘C Generally, the volume of a given amount of a substance increases on heating. However, water contracts when it is heated between 0∘ C and 4∘ C. After 4∘ C it again starts expanding. Hence, the volume of a given amount of water is lowest at 4∘ C.