100 mL each of coconut oil and water are taken in two beakers and kept in the freezer.
a) What difference can be observed in their volumes during freezing?
b) What do you infer from the observation?
c) When water is frozen in glass bottles, it is advised not to fill the bottles completely. Explain the reason.

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Solution

a) The volume in beaker containing water will be greater.
b) This is due to anomalous expansion of water. Water expands on freezing whereas other liquids generally contract on freezing.
c) As water expands on freezing, a completely filled bottle may break when water freezes.

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Similar questions

Q. Why should a glass bottle completely filled with water never be kept in a freezer?

Q. Explain the following:
(a) Water pipes in colder countries often burst in winter.
(b) In winter, water tank (or ocean) starts freezing from the surface and not from the bottom.
(c) Fishes survive in ponds even when the atmospheric temperature is well below

0 C

.
(d) A hollow glass sphere which floats with its entire volume submerged in water at

4 C

sinks when water is heated above

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(e) A glass bottle completely filled with water and tightly closed at room temperature, is likely to burst when kept in the freezer of a refrigerator.

Paheli kept some water in a beaker for heating. She observed that tiny bubbles appeared before the water started to boil. She boiled the water for about 5 minutes and filled it in a bottle up to the brim and kept the bottle airtight till it cooled down to room temperature.

(a) Why did the tiny bubbles appeared?

(b) Do you think tiny bubbles will appear on heating the water taken out from the bottle? Justify your answer

Explain the following :

(a) Water pipes in colder countries often burst in winter.

(b) In winter, water tank (or ocean) starts freezing from the surface and not from the bottom.

(d) A hollow glass sphere which floats with its entire volume submerged in water at $4^{\circ} C$ , sinks when water is heated above $4^{\circ} C$ .

(e) A glass bottle completely filled with water and tightly closed at room temperature, is likely to burst when kept in the freezer of a refrigerator.

Q. If there is a glass bottle with steel coating and filled with water (full) and kept in freezer, will the bottle break?

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a) The volume in beaker containing water will be greater. b) This is due to anomalous expansion of water. Water expands on freezing whereas other liquids generally contract on freezing. c) As water expands on freezing, a completely filled bottle may break when water freezes.

a) The volume in beaker containing water will be greater.
b) This is due to anomalous expansion of water. Water expands on freezing whereas other liquids generally contract on freezing.
c) As water expands on freezing, a completely filled bottle may break when water freezes.