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प्रश्न
Explain, why are soft drink bottles not completely filled?
उत्तर
On lowering the temperature below 4°C, water expands due to its anomalous behaviour. So, if soft drink bottles are completely filled, then they may burst and cause accident. As a result, soft drink bottles are not completely filled.
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संबंधित प्रश्न
Explain the following:
What is the role of the anomalous behaviour of water in preserving aquatic life in regions of cold climate?
Calculate the time required to heat 20 kg of water from 10°C to 35°C using an immersion heater rated 1000 W. Assume that 80% of the power input is used to heat the water. Specific heat capacity of water = 42000 J kg−1 K−1.
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.
A deep pond of water has its top layer frozen. What will be the likely temperature of water layer just in contact with ice?
Give reasons for the following:
Even when the water in the lakes is frozen, fish can survive.
_______ apparatus is used to study the 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.
A graph between the volume and temperature of water is shown. Explain the anomalous behaviour of water.
