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प्रश्न
In cold countries, the water pipes are covered with poor conductors. Why?
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उत्तर
In cold countries, water pipes are covered with poor conductors because poor conductor prevents water from freezing and thus prevent these pipes from bursting.
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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?
1 kg of ice at 0°C is mixed with 1 kg of steam at 100°C. What will be the composition of the system when thermal equilibrium is reached? Latent heat of fusion of ice = 3.36 × 103 J kg−1 and latent heat of vaporization of water = 2.26 × 106 J kg−1.
What do you mean by the anomalous expansion of water?
Draw a graph between volume and temperature, when 5 cm3 of ice at -10°C is heated to form water at +10°C.
A deep pond of water has its top layer frozen. What will be the likely temperature of water layer just in contact with ice?
Study the following diagrams and write down your observations.
Observe the given graph and answer the following questions:
- Name the process represented in the figure.
- At what temperature does this process take place?
Match the columns:
| Column ‘A’ | Column ‘B’ |
| The density of water is maximum at | (a) 0°C |
| (b) 4°C | |
| (c) 100°C |
