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प्रश्न
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संबंधित प्रश्न
State any two measures to minimize the impact of global warming.
Write the approximate value of specific latent heat of ice.
- Which requires more heat: 1 g ice at 0℃ or 1 g water at 0℃ to raise its temperature to 10℃?
- Explain your answer in part (a).
Explain the following:
The heat supplied to a substance during it change of state, does not cause any rise in its temperature.
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.
When a liquid is getting converted into solid, the latent heat is ………………………………
Define the following terms:
(i) Specific latent heat,
(ii) Specific latent heat of fusion.
What do you understand by the ‘latent heat of vaporization’ of a substance?
State the main precautions to be taken in finding the latent heat of steam.
When ice is converted into water : constant temperature : : before the water evaporates : _______
Specific latent heat of vaporisation : J/kg : : specific heat : _______
Write the name.
Products obtained when sugar is heated.
During reheating, ice is converted to water at a temperature of 0 °C.
Write scientific reason.
The bottom of some steel utensils used for cooking is copper.
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.
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.
