Latent heat of fusion is the heat required to:
ABoil a liquid across all cases
BCompress a gas under typical conditions
CCool a body in general usage
DMelt a solid into liquid at constant temperature
Answer & Solution
Correct answer: D. Melt a solid into liquid at constant temperature
1. Melting needs energy to break the rigid bonds of the solid.
2. The temperature stays constant during the change.
3. The heat absorbed at constant T to melt 1 kg of solid is the latent heat of fusion.
4. So the answer is the heat required to melt a solid at constant temperature.
_Source: Selina Concise Physics ICSE Class 8, Ch 1 'Matter'_
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