Question

The SI unit of relative density is:

• A. $kg{m}^{-3}$
• B. $gc{m}^{-3}$
• C. $kgc{m}^{-3}$
• D. no units

Answer 1

The correct option is D

no units

1. The ratio between density of a substance and density of water, is called relative density.
2. $RelativeDensity(R.D)=\frac{Densityofsubs\tan ce}{Densityofwater}$
3. Relative density is a ratio of similar quantities.
4. Relative density is a pure number and has no units.

Hence, the correct answer is option (D) i.e. no units