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प्रश्न
Study the following diagrams and write down your observations.
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उत्तर
In the diagram, it is clear that the ice will melt faster in the flask than in the test tube because water is a bad conductor of heat and the transfer of heat in liquid through convection is from bottom to top.
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संबंधित प्रश्न
Water is cooled from 4 °C to 0 °C. It will :
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?
In cold countries, the water pipes are covered with poor conductors. Why?
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 _______.
Write scientific reason.
Fish can survive even in frozen ponds in cold regions.
