Question

How does the density of water vary during the anomalous expansion of water?

• A. Density decreases first then decreases.
• B. Density increases first then decreases.
• C. Density increases first then decreases.
• D. Density increases first then remains constant.

Answer 1

The correct option is B Density increases first then decreases.

The anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4°C to 0°C, and it becomes less dense. Normally, liquids contract on cooling & the density increases. However, water is special.