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P-1 Heat — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceP-1 Heat2 Marks
Question
A plastic bottle, completely filled with water, when kept in a freezer, is likely to break.
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Answer

The temperature of air in the freezer (deep freeze) compartment of a refrigerator is less than 0 °C. 2. When a plastic bottle, completely filled with water, is kept in this compartment, the temperature of water falls below 4 °C and the water expands. Even when water freezes and ice is formed, there is an increase in the volume. It exerts a large pressure on the sides of the bottle and hence the bottle is likely to break.

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