Question

What are the units of relative density?

• A. Density is the mass per unit volume and relative density of a substance is the ratio of its density to that of water.
• B. $m^3$
• C. $kg$
• D. no units

Answer 1

The correct option is D

no units

Density is the mass per unit volume and relative density of a substance is the ratio of its density to that of water.

Since relative density is the ratio of densities it has no units.