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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 of Ice floats on water.
Give reason for Sea water does not freeze at 0°C.
Draw a graph to show the variation in density of water with temperature in the range from 0°C to 10°C.
Describe an experiment to show that water has maximum density at 4°C. What important consequences follow this peculiar property of water? Discuss the importance of this phenomenon in nature.
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.
Draw a graph between volume and temperature, when 5 cm3 of ice at -10°C is heated to form water at +10°C.
Name the following diagram appropriately.
