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संबंधित प्रश्न
Fill in the blank and rewrite the sentence.
The amount of water vapour in air is determined in terms of its ........... .
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.
A calorimeter contains 50 g of water at 50°C. The temperature falls to 45°C in 10 minutes. When the calorimeter contains 100 g of water at 50°C, it takes 18 minutes for the temperature to become 45°C. Find the water equivalent of the calorimeter.
At what temperature is the density of water is maximum? State its value.
How do fishes survive in frozen lakes?
Give reasons for the following:
Even when the water in the lakes is frozen, fish can survive.
In a region with a cold climate the aquatic animals can survive at 4 °C, because _______.
