Specific gravity of silver is 11 and specific gravity of iron is 8. Which one among the following is the approximate relative density of silver with respect to iron?

Specific gravity, also known as relative density, is defined as the ratio of the density of a substance to the density of a reference substance, typically water [1]. Since specific gravity is a dimensionless ratio [1], the relative density of one substance with respect to another can be calculated by dividing their respective specific gravities. In this case, the specific gravity of silver is 11 and the specific gravity of iron is 8. To find the relative density of silver with respect to iron, we divide the specific gravity of silver by that of iron: 11 / 8 = 1.375. Rounding this value to the nearest decimal gives approximately 1.4. This calculation follows the principle that relative density compares the heaviness of materials and is a unitless quantity.

Sources

1. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 9: The Amazing World of Solutes, Solvents, and Solutions > Conversion factor for density > p. 141