Advertisements
Advertisements
प्रश्न
At what temperature is the density of water is maximum? State its value.
Advertisements
उत्तर
Density of water is maximum at 4°C. Its value is 1000 kgm-3.
APPEARS IN
संबंधित प्रश्न
Give reason for Sea water does not freeze at 0°C.
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.
Explain the following
A hollow glass sphere which floats with its entire volume submerged in water at 4°C, sinks when water is heated above 4°C.
Explain, why are the exposed water pipes lagged with straw during severe winter?
In a region with a cold climate the aquatic animals can survive at 4 °C, because _______.
Write the name.
The instrument used to study anomalous behaviour of water.
Match the columns:
| Column ‘A’ | Column ‘B’ |
| The density of water is maximum at | (a) 0°C |
| (b) 4°C | |
| (c) 100°C |
