Define relative density

Choose the correct option, which defines Relative density.

If the density of iron is 7.85 g cm^(-3) and density of water is 1000 kg m-3, then the relative density of iron is __________.

If 1 g of substance of relative density 2 and 4 g of another substance of relative density 3 are mixed together then the relative density of the mixture is

(a ) what is the difference between the density and relative density of a substance ? (b) If the relative density of a substance is 7.1 what will be its density in SI units ?

What is the relative density of silver?

What is the value of relative density of water