Question

Which among these contract on melting?

• A. Lead
• B. Wax
• C. Ice
• D. All of the above

Answer 1

The correct option is C

Ice

Among the options, ice contracts on melting. Lead and Wax expand on melting.

When water is heated from 0${}^{\circ }C$, the density of water first increases from 0${}^{\circ }C$ to 4${}^{\circ }C$ and then decreases above 4${}^{\circ }C$. On the other hand, on cooling water from 100${}^{\circ }C$, the density of water first increases up to 4 ${}^{\circ }C$ and then decreases when it is cooled below 4${}^{\circ }C$ to 0${}^{\circ }C$. When ice starts to melt, its density increases and volume contracts.