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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.
A 50 kg man is running at a speed of 18 km h−1. If all the kinetic energy of the man can be used to increase the temperature of water from 20°C to 30°C, how much water can be heated with this energy?
Explain, why does a glass bottle completely filled with water and tightly capped burst when placed in a freezer?
Explain, why are the exposed water pipes lagged with straw during severe winter?
A deep pond of water has its top layer frozen. What will be the likely temperature of water layer at the bottom of the pond?
The following diagrams illustrate three situations involving thermometers which are labeled A, Band C. In each situation the thermometers indicate different readings.
(i) What do you expect the approximate reading of the thermometer B and C would be? Give a reason for your answer.
(ii) How would the readings of A and B help you in calibrating a thermometer?
Write scientific reason.
Fish can survive even in frozen ponds in cold regions.
