Question

What is the unit of relative density?

Answer 1

is a dimensionless quantity and has no unit. Relative density is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity usually means relative density with respect to water.. it is a dimensionaless quantity and it has no S.I unit.

Answer 2

relative density is a dimensionless quantity and has no unit. Relative density is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material