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प्रश्न
What is the energy absorbed during the phase change called?
उत्तर
Latent heat of fusion
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संबंधित प्रश्न
State the effect of an increase of impurities on the melting point of ice.
Explain the following:
The surrounding become pleasantly warm when water in a lake starts freezing in cold countries.
A refrigerator converts 100g of water at 20℃ to ice at – 10℃ in 73.5 min. Calculate the average rate of heat extraction in watt. The specific heat capacity of water is 4.2 J kg-1 K-1, specific latent heat of ice is 336 J g-1 and the specific heat capacity of ice is 2.1 J kg-1 K-1.
What is meant by latent heat? How will the state of matter transform if latent heat is given off?
Answer the following:
Explain the role of latent heat in the change of state of a substance.
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.
When 1 g of ice at 0 °C melts to form 1 g of water at 0 °C then, is the latent heat absorbed by the ice or given out by it?
Why does weather become pleasant when it starts freezing in cold countries?
What do you understand by the ‘latent heat of vaporization’ of a substance?
State two advantages of the high specific latent heat capacity of steam, which is about 226 × 104 J/kg?
If pressure increases, the melting point of a substance ______.
Specific latent heat of vaporisation : J/kg : : specific heat : _______
Find the odd one out and give its explanation.
Write the name.
Products obtained when sugar is heated.
1 kg of dry air at a temperature of 40 °C can hold a maximum of 49 g of water vapour.
Define specific latent heat capacity
For the same mass of ice and ice-cold water, why does ice produce more cooling than ice-cold water?
Calculate the amount of heat required to convert 200g of ice at 0°C into the water at 0°C Specific latent heat of fusion of ice = 336 Jg-1
