SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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specific latent heat of vaporisation is
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the amount of heat required to change 1 kg of the substance from the solid to liquid phase without change in temperature
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the amount of heat required to change 1 kg of the substance from the liquid to gaseous phase without change in temperature
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the amount of heat required to change the temperature 1 kg of the substance by 1 degree Celcius
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None of the above
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Explanation:
Detailed explanation-1: -Specific latent heat of vaporization of a liquid is the amount of heat energy required to change 1 kg of the material in the liquid state at its boiling point to 1 kg of material in the gaseous state. For 1 kg of liquid 1 kg of vapour is released.
Detailed explanation-2: -Specific Latent Heat of Vaporisation is the energy required to change the state of 1kg of a substance from liquid to gas.
Detailed explanation-3: -The specific latent heat of a substance is the amount of energy needed to change the state of 1 kg of the substance without changing its temperature. The distinction from latent heat is due to the term “specific, ‘’ which tells us that the substance is being measured per unit mass.
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