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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
Explain the following:
In cold regions in winter, the rocks crack due to anomalous expansion of water.
Calculate the time required to heat 20 kg of water from 10°C to 35°C using an immersion heater rated 1000 W. Assume that 80% of the power input is used to heat the water. Specific heat capacity of water = 42000 J kg−1 K−1.
Draw a graph to show the variation in density of water with temperature in the range from 0°C to 10°C.
Explain the following
Fishes survive in ponds even when the atmospheric temperature is well below 0°C.
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?
Write scientific reason.
Fish can survive even in frozen ponds in cold regions.
Write a short note.
Anomalous behaviour of water
