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प्रश्न
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उत्तर
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संबंधित प्रश्न
Water is used as a cooling agent.
Give reasons:
Water pipes burst in severe winters.
Consider the situation of the previous problem. Assume that the temperature of the water at the bottom of the lake remains constant at 4°C as the ice forms on the surface (the heat required to maintain the temperature of the bottom layer may come from the bed of the lake). The depth of the lake is 1.0 m. Show that the thickness of the ice formed attains a steady state maximum value. Find this value. The thermal conductivity of water = 0.50 W m−1°C−1. Take other relevant data from the previous problem.
At what temperature is the density of water is maximum? State its value.
Explain the following
A glass bottle completely filled with water and tightly closed at room temperature is likely to burst when kept in the freezer of a refrigerator.
Explain, why are the exposed water pipes lagged with straw during severe winter?
What will be the approximate temperature of water in the lake shown in the following diagram?
(i) At X, and
(ii) At Y?
When the temperature of water decreases below 4 °C it’s volume _______.
Write the name.
The instrument used to study anomalous behaviour of water.
