The latent heat of fusion of a substance is the heat required to

A.

raise the temperature of unit mass of the substance by 1 oC

B.

maintain unit mass of the substance at constant temperature

C.

change unit mass of substance from solid to liquid at constant temperature

D.

change unit mass of liquid to vapour at constant temperature

E.

raise the temperature of unit mass by 100oC

Correct answer is C

No explanation has been provided for this answer.