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प्रश्न
Give reasons for the following:
In cold countries, water pipes burst in winter.
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उत्तर
In cold countries water pipes burst in winter because the water has maximum density at 4°C and, due to anomalous expansion of water, it expands when the water is cooled to a temperature below 4°C
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संबंधित प्रश्न
Equal volumes of different liquids expand by a different amount when they are heated to the same rise in temperature.
What do you understand by thermal expansion of a substance?
Two identical rods of copper are heated to different temperatures — one by 5°C and the other by 10°C. Which rod will expand more?
Describe an experiment to show that same volume of different liquids heated to same rise in temperature expand by different amounts.
Water is heated from 0°C to 4°C. Will it expand?
What is meant by thermal expansion?
The diagram shows a sketch graph showing a change in volume of a given mass of ice at -5°C to water at 15°C.
(i) Why does the temperature along BC remain constant?
(ii) When is the volume of water minimum?
(iii) At what temperature does water have maximum density? Explain.
Solids ______ on heating and ______ on cooling.
How solids are expanded on heating?
