Do the objects that sink in water have a relative density less than 1 or more than 1 ?

Do objects that have a relative density less than 1 Sink in water or float on it ?

Any solid will sink in water if its relative density is

If the relative density of a solid is less than one, then

Any solid will not sink in water if its relative density is

Do all objects that sink in water, sink in oil ? Give reason.

If we mix some water in milk, will the relative density of the mixture be less than or more than the relative density of milk ?

Do all objects that sink in water, sink in oil ? Give reason. (AS_(1))