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प्रश्न
At what temperature is the density of water is maximum? State its value.
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उत्तर
Density of water is maximum at 4°C. Its value is 1000 kgm-3.
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संबंधित प्रश्न
On a winter day the temperature of the tap water is 20°C whereas the room temperature is 5°C. Water is stored in a tank of capacity 0.5 m3 for household use. If it were possible to use the heat liberated by the water to lift a 10 kg mass vertically, how high can it be lifted as the water comes to the room temperature? Take g = 10 m s−2.
What do you mean by the anomalous expansion of water?
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?

Give reasons for the following:
Even when the water in the lakes is frozen, fish can survive.
Write the name.
The instrument used to study anomalous behaviour of water.
Write scientific reason.
Placing a plastic bottle filled with water in the freezing compartment in the freezer can cause the bottle to explode.
Draw a neat and labelled diagram of Hope’s apparatus.
