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प्रश्न
Water is used as a cooling agent.
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उत्तर
Water has high specific heat. Water neither heats up nor cools down quickly. This property makes water an excellent cooling agent.
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संबंधित प्रश्न
Give reason for Sea water does not freeze at 0°C.
The amount of water vapour in air is determined in terms of its ______.
Observe the following graph. Considering the change in volume of water as its temperature is raised from 0°C, discuss the difference in the behaviour of water and other substances. What is this behaviour of water called?
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.
Density of water is maximum at :
Explain, why are the exposed water pipes lagged with straw during severe winter?
Study the following diagrams and write down your observations.
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 |
