Question

For a given mass of water, heat required for conversion of different processes is listed below.
$Q_1:$ Amount of heat required for ice at $-10{}^{\circ }C$ to reach $0{}^{\circ }C$.
$Q_2:$ Amount of heat required to convert ice into water.
$Q_3:$ Amount of heat required for water to reach from $0{}^{\circ }C$ to $100{}^{\circ }C$.
$Q_4:$ Amount of heat required for water to vapourise.

Which of the following heat transfers would involve latent heat of fusion?

• A. $Q_1$
• B. $Q_2$
• C. $Q_3$
• D. $Q_4$

Answer 1

The correct option is B $Q_2$

Latent heat of fusion is the heat required to convert ice from its solid state to water, i.e, $Q_2$. The value of latent heat of fusion of ice is $80cal/g$.