Question

When water is heated ffrom 0C to 10C. its volume
A) Increases.
B) decreases
C) does not change.
D) first decreases then increases.

Answer 1

Ans is D)   first decreases then increases.
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Normally substance’s volume increses on heating but it is not true in case of water. When water is heated from 0˚C  to 4˚C, there is gradual decreases in volume and density increases till it is a 4˚C and then volume starts increasing  to 10˚C