Question

Why we take " 4°c" for calculation of Relative Density, why not 3°C/2°C or 5°C/6°C. Justify ?​

Answer 1

Answer:

At 4 °C, the clusters start forming. The molecules are still slowing down and coming closer together, but the formation of clusters makes the molecules be further apart. Cluster formation is the bigger effect, so the density starts to decrease. Thus, the density of water is a maximum at 4 °C.

Explanation:

Hope that helps you