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प्रश्न
What change in heat energy occurs when lead at its melting point
solidifies without change in the temperature?
पर्याय
Latent heat is emitted.
Latent heat is absorbed.
Specific heat capacity is emitted.
Specific heat capacity is absorbed.
Both latent heat and specific heat are emitted.
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उत्तर
Latent heat is emitted.
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संबंधित प्रश्न
The temperature of 170 g of water at 50°C is lowered to 5°C by adding a certain amount of ice to it. Find the mass of ice added.
Given: Specific heat capacity of water = 4200 J kg-1 °C-1 and specific latent heat of ice = 336000 J kg-1.
104g of water at 30°C is taken in a calorimeter made of copper of mass 42 g. When a certain mass of ice at 0°C is added to it, the final steady temperature of the mixture after the ice has melted, was found to be 10°C. Find the mass of ice added. [Specific heat capacity of water = 4.2 Jg–1°C–1 ; Specific latent heat of fusion of ice = 336 Jg–1; Specific heat capacity of copper = 0.4 Jg–1°C–1] .
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