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प्रश्न
What is the name given to the energy absorbed during a phase change?
उत्तर
The name given to the energy absorbed during a phase change is latent heat.
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संबंधित प्रश्न
What is the Greenhouse effect?
Write the approximate value of specific latent heat of ice.
Explain the following:
The surrounding become pleasantly warm when water in a lake starts freezing in cold countries.
Answer the following:
Explain the role of latent heat in the change of state of a substance.
Define the following terms:
(i) Latent heat,
(ii) Latent heat of fusion of ice.
A substance changes from its solid state to the liquid state when heat is supplied to it. What name is given to heat absorbed by the substance.
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Give one consequence of the high specific latent heat of fusion of ice.
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Explain the statement; “The specific latent heat of vaporization of wafer is 2260 × 103 J/kg”.
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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.)
Specific latent heat of vaporisation : J/kg : : specific heat : _______
Find the odd one out and give its explanation.
How fog is formed?
Match the columns.
| Column A | Column B |
| 1) Absolute humidity | a) J or cal |
| 2) Latent heat | b) J/kg °C |
| 3) Specific heat capacity | c) kJ/kg |
| 4) Heat | d) no unit |
| e) kg/m3 |
For the same mass of ice and ice-cold water, why does ice produce more cooling than ice-cold water?
Specific latent heat L = ______.
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20 g of ice at 0°C absorbs 10,920 J of heat energy to melt and change to water at 50°C. Calculate the specific latent heat of fusion of ice. Specific heat capacity of water is 4200 J kg-1 K-1.
