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Answer the following:
On what basis and how will you determine whether air is saturated with vapour or not?
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.
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Fishes survive in ponds even when the atmospheric temperature is well below 0°C.
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In a region with a cold climate the aquatic animals can survive at 4 °C, because _______.
_______ apparatus is used to study the anomalous behaviour of water.
