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प्रश्न
When a liquid is getting converted into solid, the latent heat is ………………………………
उत्तर
When a liquid is getting converted into solid, the latent heat is Released.
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संबंधित प्रश्न
Explain the following:
The surrounding become pleasantly warm when water in a lake starts freezing in cold countries.
The S.I. unit of specific latent heat is ______.
A thermally insulated pot has 150 g ice at temperature 0°C. How much steam of 100°C has to be mixed to it, so that water of temperature 50°C will be obtained? (Given : latent heat of melting of ice = 80 cal/g, latent heat of vaporization of water = 540 cal/g, specific heat of water = 1 cal/g °C)
What is the name given to the energy absorbed during a phase change?
Name two factors on which the heat absorbed or given out by a body depends.
Derive an expression for the amount of heat given out or taken up, when its temperature falls or rises by t°C.
If pressure increases, the melting point of a substance ______.
Find the odd one out and give its explanation.
How fog is formed?
Write scientific reason.
Even if boiling water is constantly heated, its temperature does not rise.
Define specific latent heat capacity
Specific latent heat L = ______.
Who introduced the term latent heat?
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.
Calculate the total amount of heat energy required to melt 200 g of ice at 0°C to water at 100°C. (Specific latent heat of ice = 336 Jg-1, specific heat capacity of water = 4.2 Jg-1 °C-1)
Observe the following graph and answer the following questions:
- What does the graph represent?
- What does the line AB represent?
- What does the line BC represent?
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?
