Question

Define relative density and give its unit.

Answer 1

1. Relative density is defined as the ratio of the density of a substance to the density of water at$4^{°}C$.
2. Mathematically, $Relativedensity=\frac{densityofsubs\tan ce}{densityofwaterat4°C}$
3. Since the units for both the numerator and denominator are the same, they cancel each other.
4. Thus, it is a dimensionless quantity and has no unit.