Question

The quantity of heat required to change 1kg of a solid into liquid at atmospheric pressure at its melting point is called

• A. Latent heat of vaporisation
• B. Latent heat of fusion
• C. Latent heat of sublimation
• D. Latent heat of evaporation

Answer 1

The correct option is B

Latent heat of fusion

Latent heat ---- The required energy to change the substance from one state to another state at constant

• temperature and pressure are constant
• It is two types
• Latent heat of fusion
• Latent heat of vaporization
• Latent heat of fusion ---- The amount of heat energy that is required to change 1 kg of a solid into liquid at atmospheric pressure at its melting point is known as the latent heat of fusion.

Thus, the Option B is correct I:e Latent heat of fusion