Question

In cold countries, water pipes sometimes burst, because of _____

• A. Pipe contracts
• B. Water expands on freezing
• C. When water freezes, pressure increases
• D. When water freezes, it takes heat from pipes

Answer 1

The correct option is B Water expands on freezing

In the anomalous expansion, water contracts on heating and expands on cooling in the range $0^{\circ }Cto{4}^{\circ }C$. Therefore, water pipes sometimes burst, in cold countries. At 4° C, the cage like Structure of Ice starts to break and the gases escape out due to which the volume of water decreases. Due to the decrease in volume, density increases because density is inversely proportional to volume.