Question
Question: The latent heat of vaporization of a substance is always...
The latent heat of vaporization of a substance is always
A
Greater than its latent heat of fusion
B
Greater than its latent heat of sublimation
C
Equal to its latent heat of sublimation
D
Less than its latent heat of fusion
Answer
Greater than its latent heat of fusion
Explanation
Solution
The latent heat of vaporization is always greater than latent heat of fusion because in liquid to vapour phase change there is a large increase in volume. Hence more heat is required as compared to solid to liquid phase change.