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प्रश्न
Explain why do vegetables and fruits get damaged during severe frost?
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उत्तर
Vegetables and fruits get damaged during severe fruits because the water present in them on freezing expands and burst open the cell walls of cells.
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संबंधित प्रश्न
Give reasons:
Water pipes burst in severe winters.
Explain the following:
How can you relate the formation of water droplets on the outer surface of a bottle taken out of the refrigerator with the formation of dew?
A calorimeter contains 50 g of water at 50°C. The temperature falls to 45°C in 10 minutes. When the calorimeter contains 100 g of water at 50°C, it takes 18 minutes for the temperature to become 45°C. Find the water equivalent of the calorimeter.
At what temperature is the density of water is maximum? State its value.
Explain the following
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.
Explain, why are soft drink bottles not completely filled?
Explain, why are the exposed water pipes lagged with straw during severe winter?
Why does a thick glass tumbler crack when very hot water is poured in it?
Observe the following diagram and write the answers to the questions given below.
- Which process does the graph represent?
- What is the range of temperature responsible for the behaviour?
