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प्रश्न
Explain why water is used in hot water bottles for fomentation and also as a universal coolant.
उत्तर
Hot water bottles are used for fomentation since since water does not cool quickly due to its large specific heat capacity.
Water is used as an effective coolant because of its large specific heat capacity due to which it can extract more heat.
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संबंधित प्रश्न
State two characteristics of a good thermion emitter.
State two factors upon which the rate of emission of thermions depends.
State any two measures to minimize the impact of global warming.
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- Explain your answer in part (a).
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The heat supplied to a substance during it change of state, does not cause any rise in its temperature.
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| Column A | Column B |
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| 2) Latent heat | b) J/kg °C |
| 3) Specific heat capacity | c) kJ/kg |
| 4) Heat | d) no unit |
| e) kg/m3 |
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