Correct option is C
Specific gravity is a measure of the density of a substance relative to the density of water. The specific gravity of mercury is 13.6, which means mercury is 13.6 times denser than water. This high density makes mercury useful in applications like barometers, thermometers, and other scientific instruments.
Key Points:
· The density of water is 1 g/cm³ (or 1000 kg/m³) at standard temperature and pressure.
· The density of mercury is 13.6 g/cm³ (or 13,600 kg/m³).
· Specific gravity is a dimensionless quantity, as it is a ratio of densities.
