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संबंधित प्रश्न
Give reason for Sea water does not freeze at 0°C.
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.
Describe an experiment to show that water has maximum density at 4°C. What important consequences follow this peculiar property of water? Discuss the importance of this phenomenon in nature.
What is the criterion of choosing the two metals for a bimetal strip?
Give reasons for the following:
Even when the water in the lakes is frozen, fish can survive.
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.
