Question

When a water filled in a closed glass bottle is kept in a refrigerator, it cracks. Give Reason

Answer 1

Due to anamolous expansion of water.
In this water starts expanding when temp. reaches 4°C due to which it cracks.

Answer 2

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1. The temperature of air in the freezer (deepfreeze) 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.

3. Even when water freezes and ice is formed, there I an increase in the volume.

4. It exerts a large pressure on the sides of the bottle.

Hence, the glass bottle is likely to crack.

Hope it helps!

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