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प्रश्न
Water expands on reducing its temperature below ______°C.
विकल्प
0
4
8
12
उत्तर
Water expands on reducing its temperature below 4°C.
Explanation:
Anomalous expansion of water.
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संबंधित प्रश्न
What is the energy absorbed during the phase change called?
Write the approximate value of specific latent heat of ice.
The S.I. unit of specific latent heat is ______.
Calculate the total amount of heat energy required to convert 100 g of ice at −10℃ completely into water at 100℃. Specific heat capacity of ice = 2.1 J g-1 K-1, specific heat capacity of water = 4.2 J g-1K-1, specific latent heat of ice = 336 J g-1.
What is meant by latent heat? How will the state of matter transform if latent heat is given off?
When a liquid is getting converted into solid, the latent heat is ………………………………
What is the name given to the energy absorbed during a phase change?
Explain why water is used in hot water bottles for fomentation and also as a universal coolant.
Define the term ‘specific latent heat of fusion’ of a substance.
Explain, why no tracks are left on the ice during ice skating?
Why does evaporation causes cooling and why is water used in hot water bottles?
Steam at 100°C is passed over 1000 g of ice at 0°C. After some time, 600 g of ice at 0°C is left and 450 g of water at 0°C is formed. Calculate the specific latent heat of vaporization of steam (Given: specific heat capacity of water = 4200 J/kg°C, specific latent heat of fusion of ice = 336,000 J/kg.)
If there is no Heat loss to the surroundings, the heat released by the condensation of m1 g of steam at 100°C into water at 100°C can be used to convert m2 g of ice at 0°C into water at 0°C.
(i) Find:
(a) The heat lost by steam in terms of m1
(b) The heat gained by ice in terms of m2
(ii) Form a heat equation find the ratio of m2 : m1
Specific latent heat of vaporization of steam = 2268 kJ/kg
Specific latent heat of fusion of ice = 336 kJ/kg
Specific heat capacity of water = 4200 J/kg°C
The latent heat of vaporisation is a term referred for the conversion of gas into liquid.
For the same mass of ice and ice-cold water, why does ice produce more cooling than ice-cold water?
2875 J of heat is required to melt 115 g of lead at its melting point. Calculate the specific latent heat capacity of fusion of lead.
The diagram below shows a cooling curve for a substance:
- State the temperatures at which the substance condenses.
- The temperature range in which the substance is in liquid state.
- Why do we prefer ice to ice-cold water for cooling a drink?
