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प्रश्न
Give reason of Water pipes burst in severe winter.
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उत्तर १
Water pipes bursts in severe winter because the water inside I the pipes freezes and increases its volume.
उत्तर २
In severe winter, water pipe lines often burst because water freeze at sub-zero temperature and in doing so expands. Since there is no space within the pipes for expanding ice, it exerts very large pressure and bursts open the steel pipes.
संबंधित प्रश्न
Observe the following graph. Considering the change in volume of water as its temperature is raised from 0°C, discuss the difference in the behaviour of water and other substances. What is this behaviour of water called?
What is the role of the anomalous behaviour of water in preserving aquatic life in regions of cold climate?
What do you mean by the anomalous expansion of water?
At what temperature is the density of water is maximum? State its value.
Explain the following
Fishes survive in ponds even when the atmospheric temperature is well below 0°C.
Explain the following
A hollow glass sphere which floats with its entire volume submerged in water at 4°C, sinks when water is heated above 4°C.
Draw a graph between volume and temperature, when 5 cm3 of ice at -10°C is heated to form water at +10°C.
How do fishes survive in frozen lakes?
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?
When the temperature of water decreases below 4 °C it’s volume _______.
_______ apparatus is used to study the anomalous behaviour of water.
Write scientific reason.
Fish can survive even in frozen ponds in cold regions.
Draw a neat and labelled diagram of Hope’s apparatus.
Name the following diagram appropriately.
Write a short note.
Anomalous behaviour of water
Match the columns:
| Column ‘A’ | Column ‘B’ |
| The density of water is maximum at | (a) 0°C |
| (b) 4°C | |
| (c) 100°C |
